public class SqlDBHelper
{
public static string connectionString = ConnectConfig.DBConnectionString;
#region 初始化init()
/// <summary>
/// 根据实体类生成数据访问
/// 王利民
/// </summary>
/// <param name="dtStru"></param>
/// <param name="adapter"></param>
/// <param name="conn"></param>
private static void init(DataTable dtStru, System.Data.SqlClient.SqlDataAdapter adapter, SqlConnection connection)
{
string strTableName = dtStru.TableName;
DataColumn[] colPkName = dtStru.PrimaryKey;
string strInsertField = "";
string strInsertValue = "";
string strUpdate = "";
//插入语句
string strInsertSql = "";
//修改语句
string strUpdateSql = "";
//删除语句
string strDeleteSql = "";
string strWhereSql = "";
foreach (DataColumn dc in colPkName)
{
if (strWhereSql == "")
strWhereSql = " where " + dc.ColumnName + @" = @Original_" + dc.ColumnName;
else
strWhereSql += " and " + dc.ColumnName + @" = @Original_" + dc.ColumnName;
}
System.Data.SqlClient.SqlCommand sqlInsertComm = new System.Data.SqlClient.SqlCommand();
System.Data.SqlClient.SqlCommand sqlUpdateComm = new System.Data.SqlClient.SqlCommand();
System.Data.SqlClient.SqlCommand sqlDeleteComm = new System.Data.SqlClient.SqlCommand();
//动态生成映射列
System.Data.Common.DataTableMapping dTableMap = new System.Data.Common.DataTableMapping("Table", strTableName);
foreach (DataColumn dcField in dtStru.Columns)
{
dTableMap.ColumnMappings.Add(dcField.ColumnName, dcField.ColumnName);
//如果不是自动增长的字段
if (!dcField.AutoIncrement)
{
if (strInsertField == "")
{
strInsertField = dcField.ColumnName;
strInsertValue = "@" + dcField.ColumnName;
}
else
{
strInsertField += "," + dcField.ColumnName;
strInsertValue += ",@" + dcField.ColumnName;
}
if (!dcField.Unique)
{
if (strUpdate == "")
{
strUpdate = dcField.ColumnName + "=@" + dcField.ColumnName;
}
else
{
strUpdate += "," + dcField.ColumnName + "=@" + dcField.ColumnName;
}
}
}
}
strInsertSql = @"INSERT INTO " + strTableName + " (" + strInsertField + ") values(" + strInsertValue + ")";
strUpdateSql = @"update " + strTableName + " set " + strUpdate + strWhereSql;
strDeleteSql = @"delete " + strTableName + strWhereSql;
adapter.TableMappings.AddRange(new System.Data.Common.DataTableMapping[] { dTableMap });
//
// Adapter
//
adapter.DeleteCommand = sqlDeleteComm;
adapter.InsertCommand = sqlInsertComm;
adapter.UpdateCommand = sqlUpdateComm;
//
// sqlInsertComm
//
//动态生成插入语句
sqlInsertComm.CommandText = strInsertSql;
sqlInsertComm.Connection = connection;
BuildPara(sqlInsertComm, dtStru);
//
// sqlUpdateComm
//
sqlUpdateComm.CommandText = strUpdateSql;
sqlUpdateComm.Connection = connection;
BuildPara(sqlUpdateComm, dtStru);
BuildWherePara(sqlUpdateComm, dtStru);
//
// sqlDeleteComm
//
sqlDeleteComm.CommandText = strDeleteSql;
sqlDeleteComm.Connection = connection;
BuildWherePara(sqlDeleteComm, dtStru);
}
/// <summary>
/// 根据表名返回所有列名称
/// </summary>
/// <param name="strTablename">表名称</param>
/// <returns></returns>
private static ArrayList getcolumn(string strTablename, SqlTransaction myTrans)
{
try
{
SqlParameter[] paramss =
{
new SqlParameter{ParameterName="@table_name",Direction = ParameterDirection.Input, Value = strTablename}
};
// 执行存储过程，返回指定的结果集行数，同时返回总行数
DataSet ds = RunProcedureNoConn("sp_columns", paramss, myTrans);
if (ds != null && ds.Tables.Count > 0)
{
ArrayList arlCol = new ArrayList();
foreach (DataRow dr in ds.Tables[0].Rows)
{
arlCol.Add(dr["COLUMN_NAME"].ToString());
}
return arlCol;
};
return null;
}
catch (System.Exception e)
{
throw e;
}
}
private static DataSet RunProcedureNoConn(string storedProcName, IDataParameter[] parameters, SqlTransaction myTrans)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
System.Data.SqlClient.SqlDataAdapter adapter = new SqlDataAdapter();
DataSet data = new DataSet();
try
{
adapter.SelectCommand = BuildQueryCommand(connection, storedProcName, parameters);
adapter.SelectCommand.Transaction = myTrans;
adapter.Fill(data, storedProcName);
}
catch (System.Exception e)
{
throw e;
}
return data;
}
}
/// <summary>
/// 验证表结构
/// </summary>
/// <param name="dtStru">DataTable</param>
/// <param name="adapter"></param>
/// <param name="arlCol">在SQlServer表中的列名称</param>
private static void init(DataTable dtStru,SqlConnection connection, System.Data.SqlClient.SqlDataAdapter adapter, ArrayList arlCol)
{
string strTableName = dtStru.TableName;
DataColumn[] colPkName = dtStru.PrimaryKey;
string strInsertField = "";
string strInsertValue = "";
string strUpdate = "";
//插入语句
string strInsertSql = "";
//修改语句
string strUpdateSql = "";
//删除语句
string strDeleteSql = "";
string strWhereSql = "";
foreach (DataColumn dc in colPkName)
{
if (strWhereSql == "")
strWhereSql = " where " + dc.ColumnName + @" = @Original_" + dc.ColumnName;
else
strWhereSql += " and " + dc.ColumnName + @" = @Original_" + dc.ColumnName;
}
System.Data.SqlClient.SqlCommand sqlInsertComm = new System.Data.SqlClient.SqlCommand();
System.Data.SqlClient.SqlCommand sqlUpdateComm = new System.Data.SqlClient.SqlCommand();
System.Data.SqlClient.SqlCommand sqlDeleteComm = new System.Data.SqlClient.SqlCommand();
//动态生成映射列
System.Data.Common.DataTableMapping dTableMap = new System.Data.Common.DataTableMapping("Table", strTableName);
foreach (DataColumn dcField in dtStru.Columns)
{
bool bnlIsExistCol = false;
dTableMap.ColumnMappings.Add(dcField.ColumnName, dcField.ColumnName);
//检查在表结构中是否存在
foreach (string aStr in arlCol)
{
if (aStr.Equals(dcField.ColumnName))
{
bnlIsExistCol = true;
}
}
//如果不是自动增长的字段
if (!dcField.AutoIncrement && bnlIsExistCol)
{
if (strInsertField == "")
{
strInsertField = dcField.ColumnName;
strInsertValue = "@" + dcField.ColumnName;
strUpdate = dcField.ColumnName + "=@" + dcField.ColumnName;
}
else
{
strInsertField += "," + dcField.ColumnName;
strInsertValue += ",@" + dcField.ColumnName;
strUpdate += "," + dcField.ColumnName + "=@" + dcField.ColumnName;
}
}
}
strInsertSql = @"INSERT INTO " + strTableName + " (" + strInsertField + ") values(" + strInsertValue + ")";
strUpdateSql = @"update " + strTableName + " set " + strUpdate + strWhereSql;
strDeleteSql = @"delete from " + strTableName + strWhereSql;
adapter.TableMappings.AddRange(new System.Data.Common.DataTableMapping[] { dTableMap });
//
// Adapter
//
adapter.DeleteCommand = sqlDeleteComm;
adapter.InsertCommand = sqlInsertComm;
adapter.UpdateCommand = sqlUpdateComm;
//
// sqlInsertComm
//
//动态生成插入语句
sqlInsertComm.CommandText = strInsertSql;
sqlInsertComm.Connection = connection;
BuildPara(sqlInsertComm, dtStru);
//
// sqlUpdateComm
//
sqlUpdateComm.CommandText = strUpdateSql;
sqlUpdateComm.Connection = connection;
BuildPara(sqlUpdateComm, dtStru);
BuildWherePara(sqlUpdateComm, dtStru);
//
// sqlDeleteComm
//
sqlDeleteComm.CommandText = strDeleteSql;
sqlDeleteComm.Connection = connection;
BuildWherePara(sqlDeleteComm, dtStru);
}
private static void BuildPara(System.Data.SqlClient.SqlCommand mSqlommand, DataTable dt)
{
foreach (DataColumn dc in dt.Columns)
{
//如果不是自动增长的字段， 创建参数
if (!dc.AutoIncrement)
{
switch (dc.DataType.Name.ToString())
{
case "String":
mSqlommand.Parameters.Add(new System.Data.SqlClient.SqlParameter("@" + dc.ColumnName, System.Data.SqlDbType.VarChar, 0, dc.ColumnName));
break;
case "Int16":
case "Int32":
mSqlommand.Parameters.Add(new System.Data.SqlClient.SqlParameter("@" + dc.ColumnName, System.Data.SqlDbType.Int, 0, dc.ColumnName));
break;
case "Int64":
mSqlommand.Parameters.Add(new System.Data.SqlClient.SqlParameter("@" + dc.ColumnName, System.Data.SqlDbType.BigInt, 0, dc.ColumnName));
break;
case "Decimal":
mSqlommand.Parameters.Add(new System.Data.SqlClient.SqlParameter("@" + dc.ColumnName, System.Data.SqlDbType.Decimal, 0, dc.ColumnName));
break;
case "Boolean":
mSqlommand.Parameters.Add(new System.Data.SqlClient.SqlParameter("@" + dc.ColumnName, System.Data.SqlDbType.Bit, 0, dc.ColumnName));
break;
case "DateTime":
mSqlommand.Parameters.Add(new System.Data.SqlClient.SqlParameter("@" + dc.ColumnName, System.Data.SqlDbType.DateTime, 0, dc.ColumnName));
break;
case "VarBinary":
mSqlommand.Parameters.Add(new System.Data.SqlClient.SqlParameter("@" + dc.ColumnName, System.Data.SqlDbType.VarBinary, 2147483647, dc.ColumnName));
break;
case "Byte[]":
mSqlommand.Parameters.Add(new System.Data.SqlClient.SqlParameter("@" + dc.ColumnName, System.Data.SqlDbType.VarBinary, 2147483647, dc.ColumnName));
break;
}
}
}
}
private static void BuildWherePara(System.Data.SqlClient.SqlCommand mSqlommand, DataTable dt)
{
foreach (DataColumn dc in dt.PrimaryKey)
{
switch (dc.DataType.Name.ToString())
{
case "String":
mSqlommand.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Original_" + dc.ColumnName, System.Data.SqlDbType.VarChar, 0, dc.ColumnName));
break;
case "Int16":
case "Int32":
mSqlommand.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Original_" + dc.ColumnName, System.Data.SqlDbType.Int, 0, dc.ColumnName));
break;
case "Int64":
mSqlommand.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Original_" + dc.ColumnName, System.Data.SqlDbType.BigInt, 0, dc.ColumnName));
break;
case "Decimal":
mSqlommand.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Original_" + dc.ColumnName, System.Data.SqlDbType.Decimal, 0, dc.ColumnName));
break;
case "Boolean":
mSqlommand.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Original_" + dc.ColumnName, System.Data.SqlDbType.Bit, 0, dc.ColumnName));
break;
case "DateTime":
mSqlommand.Parameters.Add(new System.Data.SqlClient.SqlParameter("@Original_" + dc.ColumnName, System.Data.SqlDbType.DateTime, 0, dc.ColumnName));
break;
}
}
}
#endregion
/// <summary>
/// 根据记录集更新数据
/// </summary>
/// <param name="data">用户进行增加删除修改操作的记录集</param>
/// <returns></returns>
public static string UpdateData(DataSet data)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
connection.Open();
string blnResult = "";
int intTableNum = data.Tables.Count;
System.Data.SqlClient.SqlDataAdapter[] adapter = new System.Data.SqlClient.SqlDataAdapter[intTableNum];
SqlTransaction myTrans = connection.BeginTransaction();
try
{
for (int i = 0; i < intTableNum; i++)
{
System.Data.SqlClient.SqlDataAdapter adapterTmp = new SqlDataAdapter();
adapter[i] = adapterTmp;
init(data.Tables[i], adapter[i],connection);
adapter[i].UpdateCommand.Transaction = myTrans;
adapter[i].DeleteCommand.Transaction = myTrans;
adapter[i].InsertCommand.Transaction = myTrans;
}
for (int i = 0; i < intTableNum; i++)
{
if (data.GetChanges(DataRowState.Deleted) != null) adapter[intTableNum - i - 1].Update(data.GetChanges(DataRowState.Deleted));
if (data.GetChanges(DataRowState.Added) != null) adapter[i].Update(data.GetChanges(DataRowState.Added));
if (data.GetChanges(DataRowState.Modified) != null) adapter[i].Update(data.GetChanges(DataRowState.Modified));
}
myTrans.Commit();
}
catch (Exception e)
{
myTrans.Rollback();
blnResult = e.Message;
throw e;
}
return blnResult;
}
}
/// <summary>
/// 根据记录集更新数据
/// 参数记录集data， 与SQlServer表结构不一致时使用（--待更新表的字段关联了一些其他表的字段）
/// 王利民
/// </summary>
/// <param name="data">用户进行增加删除修改操作的记录集</param>
/// <returns></returns>
public static string UpdateDataCheckField(DataSet data)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
connection.Open();
string blnResult = "";
int intTableNum = data.Tables.Count;
System.Data.SqlClient.SqlDataAdapter[] adapter = new System.Data.SqlClient.SqlDataAdapter[intTableNum];
SqlTransaction myTrans = connection.BeginTransaction();
try
{
for (int i = 0; i < intTableNum; i++)
{
ArrayList arlCol = getcolumn(data.Tables[i].TableName, myTrans);
System.Data.SqlClient.SqlDataAdapter adapterTmp = new SqlDataAdapter();
adapter[i] = adapterTmp;
init(data.Tables[i],connection, adapter[i], arlCol);
adapter[i].UpdateCommand.Transaction = myTrans;
adapter[i].DeleteCommand.Transaction = myTrans;
adapter[i].InsertCommand.Transaction = myTrans;
}
for (int i = 0; i < intTableNum; i++)
{
if (data.GetChanges(DataRowState.Deleted) != null) adapter[intTableNum - i - 1].Update(data.GetChanges(DataRowState.Deleted));
if (data.GetChanges(DataRowState.Added) != null) adapter[i].Update(data.GetChanges(DataRowState.Added));
if (data.GetChanges(DataRowState.Modified) != null) adapter[i].Update(data.GetChanges(DataRowState.Modified));
}
myTrans.Commit();
}
catch (Exception e)
{
myTrans.Rollback();
blnResult = e.Message;
throw e;
}
return blnResult;
}
}
/// <summary>
/// 根据多记录集更新数据
/// 参数记录集data， 与SQlServer表结构不一致时使用（--待更新表的字段关联了一些其他表的字段）
/// 王兴华
/// </summary>
/// <param name="data">用户进行增加删除修改操作的记录集 List<DataSet> </param>
/// <returns></returns>
public static string UpdateDataCheckField(List<DataSet> list)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
connection.Open();
string blnResult = "";
if (list == null) return blnResult;
SqlTransaction myTrans = connection.BeginTransaction();
try
{
for (int j = 0; j < list.Count; j++)
{
DataSet data = list[j];
int intTableNum = data.Tables.Count;
System.Data.SqlClient.SqlDataAdapter[] adapter = new System.Data.SqlClient.SqlDataAdapter[intTableNum];
for (int i = 0; i < intTableNum; i++)
{
ArrayList arlCol = getcolumn(data.Tables[i].TableName, myTrans);
System.Data.SqlClient.SqlDataAdapter adapterTmp = new SqlDataAdapter();
adapter[i] = adapterTmp;
init(data.Tables[i],connection, adapter[i], arlCol);
adapter[i].UpdateCommand.Transaction = myTrans;
adapter[i].DeleteCommand.Transaction = myTrans;
adapter[i].InsertCommand.Transaction = myTrans;
}
for (int i = 0; i < intTableNum; i++)
{
if (data.GetChanges(DataRowState.Deleted) != null) adapter[intTableNum - i - 1].Update(data.GetChanges(DataRowState.Deleted));
if (data.GetChanges(DataRowState.Added) != null) adapter[i].Update(data.GetChanges(DataRowState.Added));
if (data.GetChanges(DataRowState.Modified) != null) adapter[i].Update(data.GetChanges(DataRowState.Modified));
}
}
myTrans.Commit();
}
catch (Exception e)
{
myTrans.Rollback();
blnResult = e.Message;
}
return blnResult;
}
}
public string SaveLargeData(DataTable SaveDT)
{
try
{
SqlBulkCopy sqlBulkCopy = new SqlBulkCopy(ConnectConfig.DBConnectionString, SqlBulkCopyOptions.UseInternalTransaction);
sqlBulkCopy.DestinationTableName = SaveDT.TableName;
sqlBulkCopy.WriteToServer(SaveDT);
return "";
}
catch (Exception ex)
{
return ex.Message;
}
}
/// <summary>
/// 更新海量数据,先删除，再插入.
/// </summary>
/// <returns></returns>
public static void UpdateLargeData(string deleteSql, DataTable SaveDT)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
connection.Open();
try
{
SqlTransaction myTrans = connection.BeginTransaction();
SqlCommand cmd = connection.CreateCommand();
cmd.CommandText = deleteSql;
cmd.Transaction = myTrans;
cmd.ExecuteNonQuery();
SqlBulkCopy sqlBulkCopy = new SqlBulkCopy(connection, SqlBulkCopyOptions.KeepIdentity, myTrans);
sqlBulkCopy.DestinationTableName = SaveDT.TableName;
sqlBulkCopy.WriteToServer(SaveDT);
myTrans.Commit();
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
}
}
/// <summary>
/// 更改数据集，同时更新basOrder
/// </summary>
/// <param name="data">待修改的记录集</param>
/// <param name="strFieldKey">记录主键的分类标识</param>
/// <returns></returns>
public static string UpdateData(DataSet data, string strFieldKey)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
connection.Open();
string blnResult = "";
int intTableNum = data.Tables.Count;
DataSet dsTemp = data.GetChanges(DataRowState.Added);
System.Data.SqlClient.SqlDataAdapter[] adapter = new System.Data.SqlClient.SqlDataAdapter[intTableNum];
SqlTransaction myTrans = connection.BeginTransaction();
try
{
for (int i = 0; i < intTableNum; i++)
{
System.Data.SqlClient.SqlDataAdapter adapterTmp = new SqlDataAdapter();
adapter[i] = adapterTmp;
init(data.Tables[i], adapter[i],connection);
adapter[i].UpdateCommand.Transaction = myTrans;
adapter[i].DeleteCommand.Transaction = myTrans;
adapter[i].InsertCommand.Transaction = myTrans;
}
for (int i = 0; i < intTableNum; i++)
{
if (data.GetChanges(DataRowState.Deleted) != null) adapter[intTableNum - i - 1].Update(data.GetChanges(DataRowState.Deleted));
if (data.GetChanges(DataRowState.Added) != null)
{
if (i == 0 && data.Tables[0].GetChanges(DataRowState.Added) != null)
{
//获取主表主键
DataColumn[] colPkName = data.Tables[0].PrimaryKey;
if (!colPkName[0].AutoIncrement)
{
//获取、处理记录主键的表
System.Data.SqlClient.SqlDataAdapter adapterSelect = new SqlDataAdapter();
SqlCommand command = new SqlCommand("SELECT KeyGroup,KeyNumber FROM PriOrders where KeyGroup = '" + strFieldKey + "'", connection);
adapterSelect.SelectCommand = command;
adapterSelect.SelectCommand.Transaction = myTrans;
DataSet dsOrder = new DataSet();
adapterSelect.Fill(dsOrder, basOrderData.BASORDER_TABLE);
string strKeyNum = dsOrder.Tables[basOrderData.BASORDER_TABLE].Rows[0][basOrderData.START_NUMBER_FIELD].ToString();
if (strKeyNum == DBNull.Value.ToString() || strKeyNum == "")
{
strKeyNum = strFieldKey + DateTime.Today.ToString("yyyyMMdd") + "000001";
}
else
{
if (DateTime.Today.ToString("yyyyMMdd") == strKeyNum.Substring(2, 8))
{
int intNum = int.Parse(strKeyNum.Substring(10, 6));
intNum = 1000001 + intNum;
strKeyNum = strKeyNum.Substring(0, 10) + intNum.ToString().Substring(1, 6);
}
else
strKeyNum = strFieldKey + DateTime.Today.ToString("yyyyMMdd") + "000001";
}
//更新主键值
command = command = new SqlCommand("update PriOrders set KeyNumber = '" + strKeyNum + "' where KeyGroup = '" + strFieldKey + "'", connection);
command.Transaction = myTrans;
command.ExecuteNonQuery();
//更改记录集的主键
for (int iTable = 0; iTable < data.Tables.Count; iTable++)
{
foreach (DataRow dr in dsTemp.Tables[iTable].Rows)
{
dr[colPkName[0].ToString()] = strKeyNum;
}
}
}
}
adapter[i].Update(dsTemp);
}
if (data.GetChanges(DataRowState.Modified) != null) adapter[i].Update(data.GetChanges(DataRowState.Modified));
}
myTrans.Commit();
}
catch (Exception e)
{
myTrans.Rollback();
if (((System.Data.SqlClient.SqlException)(e)).Number.ToString() == "547") blnResult = "数据已经被使用，无法删除！";
else blnResult = e.Message;
}
return blnResult;
}
}
/// <summary>
/// 更改数据集，同时更新basOrder
/// </summary>
/// <param name="data">待修改的记录集</param>
/// <param name="strFieldKey">记录主键的分类标识</param>
/// <returns>ID</returns>
public static string[] UpdateDataReturnID(DataSet data, string strFieldKey)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
connection.Open();
string[] blnResult = new string[2];
blnResult[0] = "";
blnResult[1] = "";
int intTableNum = data.Tables.Count;
DataSet dsTemp = data.GetChanges(DataRowState.Added);
System.Data.SqlClient.SqlDataAdapter[] adapter = new System.Data.SqlClient.SqlDataAdapter[intTableNum];
SqlTransaction myTrans = connection.BeginTransaction();
try
{
for (int i = 0; i < intTableNum; i++)
{
System.Data.SqlClient.SqlDataAdapter adapterTmp = new SqlDataAdapter();
adapter[i] = adapterTmp;
init(data.Tables[i], adapter[i],connection);
adapter[i].UpdateCommand.Transaction = myTrans;
adapter[i].DeleteCommand.Transaction = myTrans;
adapter[i].InsertCommand.Transaction = myTrans;
}
for (int i = 0; i < intTableNum; i++)
{
if (data.GetChanges(DataRowState.Deleted) != null) adapter[intTableNum - i - 1].Update(data.GetChanges(DataRowState.Deleted));
if (data.GetChanges(DataRowState.Added) != null)
{
if (i == 0 && data.Tables[0].GetChanges(DataRowState.Added) != null)
{
//获取主表主键
DataColumn[] colPkName = data.Tables[0].PrimaryKey;
if (!colPkName[0].AutoIncrement)
{
//获取、处理记录主键的表
System.Data.SqlClient.SqlDataAdapter adapterSelect = new SqlDataAdapter();
SqlCommand command = new SqlCommand("SELECT KeyGroup,KeyNumber FROM PriOrders where KeyGroup = '" + strFieldKey + "'", connection);
adapterSelect.SelectCommand = command;
adapterSelect.SelectCommand.Transaction = myTrans;
DataSet dsOrder = new DataSet();
adapterSelect.Fill(dsOrder, basOrderData.BASORDER_TABLE);
string strKeyNum = dsOrder.Tables[basOrderData.BASORDER_TABLE].Rows[0][basOrderData.START_NUMBER_FIELD].ToString();
if (strKeyNum == DBNull.Value.ToString() || strKeyNum == "")
{
strKeyNum = strFieldKey + DateTime.Today.ToString("yyyyMMdd") + "000001";
}
else
{
if (DateTime.Today.ToString("yyyyMMdd") == strKeyNum.Substring(2, 8))
{
int intNum = int.Parse(strKeyNum.Substring(10, 6));
intNum = 1000001 + intNum;
strKeyNum = strKeyNum.Substring(0, 10) + intNum.ToString().Substring(1, 6);
}
else
strKeyNum = strFieldKey + DateTime.Today.ToString("yyyyMMdd") + "000001";
}
//更新主键值
command = command = new SqlCommand("update PriOrders set KeyNumber = '" + strKeyNum + "' where KeyGroup = '" + strFieldKey + "'", connection);
command.Transaction = myTrans;
command.ExecuteNonQuery();
//更改记录集的主键
for (int iTable = 0; iTable < data.Tables.Count; iTable++)
{
foreach (DataRow dr in dsTemp.Tables[iTable].Rows)
{
dr[colPkName[0].ToString()] = strKeyNum;
}
}
blnResult[1] = strKeyNum;
}
}
adapter[i].Update(dsTemp);
}
if (data.GetChanges(DataRowState.Modified) != null) adapter[i].Update(data.GetChanges(DataRowState.Modified));
}
myTrans.Commit();
}
catch (Exception e)
{
myTrans.Rollback();
blnResult[0] = e.Message;
throw e;
}
return blnResult;
}
}
/// <summary>
/// 更改数据集，同时更新basOrder---验证字段
/// </summary>
/// <param name="data">待修改的记录集</param>
/// <param name="strFieldKey">记录主键的分类标识</param>
/// <returns>ID</returns>
public static string[] UpdateDataReturnIDCheckField(DataSet data, string strFieldKey)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
connection.Open();
string[] blnResult = new string[2];
blnResult[0] = "";
blnResult[1] = "";
int intTableNum = data.Tables.Count;
DataSet dsTemp = data.GetChanges(DataRowState.Added);
System.Data.SqlClient.SqlDataAdapter[] adapter = new System.Data.SqlClient.SqlDataAdapter[intTableNum];
SqlTransaction myTrans = connection.BeginTransaction();
try
{
for (int i = 0; i < intTableNum; i++)
{
ArrayList arlCol = getcolumn(data.Tables[i].TableName, myTrans);
System.Data.SqlClient.SqlDataAdapter adapterTmp = new SqlDataAdapter();
adapter[i] = adapterTmp;
init(data.Tables[i],connection, adapter[i], arlCol);
adapter[i].UpdateCommand.Transaction = myTrans;
adapter[i].DeleteCommand.Transaction = myTrans;
adapter[i].InsertCommand.Transaction = myTrans;
}
for (int i = 0; i < intTableNum; i++)
{
if (data.GetChanges(DataRowState.Deleted) != null) adapter[intTableNum - i - 1].Update(data.GetChanges(DataRowState.Deleted));
if (data.GetChanges(DataRowState.Added) != null)
{
if (i == 0 && data.Tables[0].GetChanges(DataRowState.Added) != null)
{
//获取主表主键
DataColumn[] colPkName = data.Tables[0].PrimaryKey;
if (!colPkName[0].AutoIncrement)
{
//获取、处理记录主键的表
System.Data.SqlClient.SqlDataAdapter adapterSelect = new SqlDataAdapter();
SqlCommand command = new SqlCommand("SELECT KeyGroup,KeyNumber FROM PriOrders where KeyGroup = '" + strFieldKey + "'", connection);
adapterSelect.SelectCommand = command;
adapterSelect.SelectCommand.Transaction = myTrans;
DataSet dsOrder = new DataSet();
adapterSelect.Fill(dsOrder, basOrderData.BASORDER_TABLE);
string strKeyNum = dsOrder.Tables[basOrderData.BASORDER_TABLE].Rows[0][basOrderData.START_NUMBER_FIELD].ToString();
if (strKeyNum == DBNull.Value.ToString() || strKeyNum == "")
{
strKeyNum = strFieldKey + DateTime.Today.ToString("yyyyMMdd") + "000001";
}
else
{
if (DateTime.Today.ToString("yyyyMMdd") == strKeyNum.Substring(2, 8))
{
int intNum = int.Parse(strKeyNum.Substring(10, 6));
intNum = 1000001 + intNum;
strKeyNum = strKeyNum.Substring(0, 10) + intNum.ToString().Substring(1, 6);
}
else
strKeyNum = strFieldKey + DateTime.Today.ToString("yyyyMMdd") + "000001";
}
//更新主键值
command = command = new SqlCommand("update PriOrders set KeyNumber = '" + strKeyNum + "' where KeyGroup = '" + strFieldKey + "'", connection);
command.Transaction = myTrans;
command.ExecuteNonQuery();
//更改记录集的主键
for (int iTable = 0; iTable < data.Tables.Count; iTable++)
{
foreach (DataRow dr in dsTemp.Tables[iTable].Rows)
{
dr[colPkName[0].ToString()] = strKeyNum;
}
}
blnResult[1] = strKeyNum;
}
}
adapter[i].Update(dsTemp);
}
if (data.GetChanges(DataRowState.Modified) != null) adapter[i].Update(data.GetChanges(DataRowState.Modified));
}
myTrans.Commit();
}
catch (Exception e)
{
myTrans.Rollback();
blnResult[0] = ((System.Data.SqlClient.SqlException)(e)).Number.ToString()
;
//throw e;
}
return blnResult;
}
}
/// <summary>
/// 根据SQLString 获取记录集
/// </summary>
/// <param name="commandText"></param>
/// <param name="strTabname"></param>
/// <returns></returns>
public static DataSet getTableData(string commandText, string strTabname)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
connection.Open();
DataSet data = new DataSet();
System.Data.SqlClient.SqlDataAdapter adapter = new SqlDataAdapter();
try
{
adapter.MissingSchemaAction = MissingSchemaAction.AddWithKey;
SqlCommand command = new SqlCommand(commandText, connection);
adapter.SelectCommand = command;
adapter.MissingSchemaAction = MissingSchemaAction.AddWithKey;
if (strTabname != "")
adapter.Fill(data, strTabname);
else
adapter.Fill(data);
}
catch (System.Exception e)
{
throw e;
}
return data;
}
}
/// <summary>
/// 根据SQLString 获取记录集
/// </summary>
/// <param name="commandText"></param>
/// <param name="strTabname"></param>
/// <returns></returns>
public static DataSet getTableDataWithOutKey(string commandText, string strTabname)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
connection.Open();
DataSet data = new DataSet();
System.Data.SqlClient.SqlDataAdapter adapter = new SqlDataAdapter();
try
{
adapter.MissingSchemaAction = MissingSchemaAction.AddWithKey;
SqlCommand command = new SqlCommand(commandText, connection);
adapter.SelectCommand = command;
adapter.MissingSchemaAction = MissingSchemaAction.Add;
if (strTabname != "")
adapter.Fill(data, strTabname);
else
adapter.Fill(data);
}
catch (System.Exception e)
{
throw e;
}
return data;
}
}
/// <summary>
/// 执行多条SQL
/// 2011-04-11 解决多表问题
/// </summary>
/// <param name="hstSQlTabel">Key： TableName Value： SQLs</param>
/// <returns></returns>
public DataSet getTableData(Hashtable hstSqlTable)
{
ArrayList arList = new ArrayList();
arList.Add(hstSqlTable);
return getTableData(arList);
}
/// <summary>
/// 执行多条SQL
/// 2011-04-11 解决排序问题
/// </summary>
/// <param name="hstSQlTabel">Key： TableName Value： SQLs</param>
/// <returns></returns>
public static DataSet getTableData(ArrayList hstSQlTabel)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
connection.Open();
DataSet data = new DataSet();
System.Data.SqlClient.SqlDataAdapter adapter = new SqlDataAdapter();
SqlTransaction myTrans = connection.BeginTransaction();
adapter.MissingSchemaAction = MissingSchemaAction.AddWithKey;
try
{
for (int i = 0; i < hstSQlTabel.Count; i++)
{
Hashtable hst = (Hashtable)hstSQlTabel[i];
foreach (DictionaryEntry hstSql in hst)
{
DataSet ds = new DataSet();
SqlCommand command = new SqlCommand(hstSql.Value.ToString(), connection);
adapter.SelectCommand = command;
adapter.SelectCommand.Transaction = myTrans;
adapter.MissingSchemaAction = MissingSchemaAction.AddWithKey;
if (hstSql.Key.ToString() != "")
adapter.Fill(ds, hstSql.Key.ToString());
else
adapter.Fill(ds);
data.Merge(ds);
}
}
myTrans.Commit();
}
catch (System.Exception e)
{
myTrans.Rollback();
throw e;
}
return data;
}
}
/// <summary>
/// 执行存储过程
/// </summary>
/// <param name="storedProcName">存储过程名</param>
/// <param name="parameters">存储过程参数</param>
/// <param name="tableName">DataSet结果中的表名</param>
/// <returns>DataSet</returns>
public static DataSet RunProcedure(string storedProcName, IDataParameter[] parameters, string strTabname)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
connection.Open();
System.Data.SqlClient.SqlDataAdapter adapter = new SqlDataAdapter();
DataSet data = new DataSet();
try
{
adapter.SelectCommand = BuildQueryCommand(connection, storedProcName, parameters);
if (strTabname != "")
adapter.Fill(data, strTabname);
else
adapter.Fill(data);
}
catch (System.Exception e)
{
throw e;
}
return data;
}
}
/// <summary>
/// 构建 SqlCommand 对象(用来返回一个结果集，而不是一个整数值)
/// </summary>
/// <param name="connection">数据库连接</param>
/// <param name="storedProcName">存储过程名</param>
/// <param name="parameters">存储过程参数</param>
/// <returns>SqlCommand</returns>
public static SqlCommand BuildQueryCommand(SqlConnection connection, string storedProcName, IDataParameter[] parameters)
{
SqlCommand command = new SqlCommand(storedProcName, connection);
command.CommandType = CommandType.StoredProcedure;
if (parameters != null)
{
foreach (SqlParameter parameter in parameters)
{
if (parameter != null)
{
// 检查未分配值的输出参数,将其分配以DBNull.Value.
if ((parameter.Direction == ParameterDirection.InputOutput || parameter.Direction == ParameterDirection.Input) &&
(parameter.Value == null))
{
parameter.Value = DBNull.Value;
}
command.Parameters.Add(parameter);
}
}
}
return command;
}
/// <summary>
/// 执行单条记录的插入、修改
/// 王利民
/// 2011-04-01
/// </summary>
/// <param name="strTableName">表名</param>
/// <param name="hSQlFieldList">字段列表</param>
/// <param name="hSQLwhereList">条件字段列表</param>
/// <param name="strOpt"></param>
public static string ExecuteSqlString(string strTableName, Hashtable hSQlFieldList, Hashtable hSQLwhereList, string strOpt)
{
string strReturn = "";
string strSql = "";
string strFields = "";
string strValue = "";
if (strOpt == "INSERT")
{
foreach (DictionaryEntry myDE in hSQlFieldList)
{
if (strFields == "")
{
strFields = " (" + myDE.Key.ToString();
strValue = " ('" + myDE.Value.ToString() + "'";
}
else
{
strFields += " ," + myDE.Key.ToString();
strValue += " ,'" + myDE.Value.ToString() + "'";
}
}
strSql = "insert into " + strTableName + strFields + strValue + ")";
}
else
{
foreach (DictionaryEntry myDE in hSQlFieldList)
{
if (strFields == "")
{
strFields = myDE.Key.ToString() + "='" + myDE.Value.ToString() + "'";
}
else
{
strFields += "," + myDE.Key.ToString() + "='" + myDE.Value.ToString() + "'";
}
}
foreach (DictionaryEntry myDE in hSQLwhereList)
{
if (strFields == "")
{
strValue = myDE.Key.ToString() + "='" + myDE.Value.ToString() + "'";
}
else
{
strValue += " and " + myDE.Key.ToString() + "='" + myDE.Value.ToString() + "'";
}
}
strSql = "update " + strTableName + " Set " + strFields + strValue + ")";
}
using (SqlConnection connection = new SqlConnection(connectionString))
{
try
{
connection.Open();
SqlCommand command = new SqlCommand();
command.CommandText = strSql;
command.Connection = connection;
command.ExecuteNonQuery();
}
catch (Exception e)
{
strReturn = e.Message;
throw e;
}
return strReturn;
}
}
/// <summary>
/// 执行SQL语句，返回影响的记录数
/// </summary>
/// <param name="SQLString">SQL语句</param>
/// <returns>影响的记录数</returns>
public static int ExecuteSql(string SQLString, params SqlParameter[] cmdParms)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
connection.Open();
using (SqlCommand cmd = new SqlCommand())
{
try
{
PrepareCommand(cmd, connection, null, SQLString, cmdParms);
int rows = cmd.ExecuteNonQuery();
cmd.Parameters.Clear();
return rows;
}
catch (System.Data.SqlClient.SqlException E)
{
throw new Exception(E.Message);
}
}
}
}
/// <summary>
/// 执行一条或多条SQL语句
/// </summary>
/// <param name="arlSQl"></param>
/// <returns></returns>
public static string ExecutesqlTrans(ArrayList arlSQl)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
connection.Open();
string strReturn = "";
SqlTransaction myTrans = connection.BeginTransaction();
try
{
//循环
foreach (string aStr in arlSQl)
{
SqlCommand command = new SqlCommand();
command.CommandText = aStr;
command.Connection = connection;
command.Transaction = myTrans;
command.ExecuteNonQuery();
}
myTrans.Commit();
}
catch (Exception ex)
{
myTrans.Rollback();
strReturn = ex.Message;
throw ex;
}
return strReturn;
}
}
/// <summary>
/// 执行多条SQL语句，实现数据库事务。
/// </summary>
/// <param name="SQLStringList">SQL语句的哈希表（key为sql语句，value是该语句的SqlParameter[]）</param>
public static void ExecuteSqlTran(Hashtable SQLStringList)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
connection.Open();
using (SqlTransaction trans = connection.BeginTransaction())
{
SqlCommand cmd = new SqlCommand();
try
{
//循环
foreach (DictionaryEntry myDE in SQLStringList)
{
string cmdText = myDE.Key.ToString();
SqlParameter[] cmdParms = (SqlParameter[])myDE.Value;
PrepareCommand(cmd, connection, trans, cmdText, cmdParms);
int val = cmd.ExecuteNonQuery();
cmd.Parameters.Clear();
trans.Commit();
}
}
catch
{
trans.Rollback();
throw;
}
}
}
}
/// <summary>
/// 执行多条SQL语句，实现数据库事务。
/// </summary>
/// <param name="SQLStringList">多条SQL语句</param>
public static int ExecuteSqlTran(List<String> SQLStringList)
{
using (SqlConnection conn = new SqlConnection(connectionString))
{
conn.Open();
SqlCommand cmd = new SqlCommand();
cmd.Connection = conn;
SqlTransaction tx = conn.BeginTransaction();
cmd.Transaction = tx;
try
{
int count = 0;
for (int n = 0; n < SQLStringList.Count; n++)
{
string strsql = SQLStringList[n];
if (strsql.Trim().Length > 1)
{
cmd.CommandText = strsql;
count += cmd.ExecuteNonQuery();
}
}
tx.Commit();
return count;
}
catch(Exception ex)
{
tx.Rollback();
return 0;
}
}
}
public static void PrepareCommand(SqlCommand cmd, SqlConnection conn, SqlTransaction trans, string cmdText, SqlParameter[] cmdParms)
{
if (conn.State != ConnectionState.Open)
conn.Open();
cmd.Connection = conn;
cmd.CommandText = cmdText;
if (trans != null)
cmd.Transaction = trans;
cmd.CommandType = CommandType.Text;//cmdType;
if (cmdParms != null)
{
foreach (SqlParameter parameter in cmdParms)
{
if ((parameter.Direction == ParameterDirection.InputOutput || parameter.Direction == ParameterDirection.Input) &&
(parameter.Value == null))
{
parameter.Value = DBNull.Value;
}
cmd.Parameters.Add(parameter);
}
}
}
/// <summary>
/// 更新当前主键编号，获取主键编号
/// </summary>
/// <param name="strFieldKey">主键标识--两位</param>
/// <returns>Return[0]：成功与否；Return[1]：返回主键</returns>
public static string[] getOrderNO(string strFieldKey)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
connection.Open();
string[] blnResult = new string[2];
blnResult[0] = "";
blnResult[1] = "";
System.Data.SqlClient.SqlDataAdapter adapterSelect = new SqlDataAdapter();
SqlTransaction myTrans = connection.BeginTransaction();
try
{
SqlCommand command = new SqlCommand("SELECT KeyGroup,KeyNumber FROM PriOrders where KeyGroup = '" + strFieldKey + "'", connection);
adapterSelect.SelectCommand = command;
adapterSelect.SelectCommand.Transaction = myTrans;
DataSet dsOrder = new DataSet();
adapterSelect.Fill(dsOrder, basOrderData.BASORDER_TABLE);
string strKeyNum = dsOrder.Tables[basOrderData.BASORDER_TABLE].Rows[0][basOrderData.START_NUMBER_FIELD].ToString();
if (strKeyNum == DBNull.Value.ToString() || strKeyNum == "")
{
strKeyNum = strFieldKey + DateTime.Today.ToString("yyyyMMdd") + "000001";
}
else
{
if (DateTime.Today.ToString("yyyyMMdd") == strKeyNum.Substring(2, 8))
{
int intNum = int.Parse(strKeyNum.Substring(10, 6));
intNum = 1000001 + intNum;
strKeyNum = strKeyNum.Substring(0, 10) + intNum.ToString().Substring(1, 6);
}
else
strKeyNum = strFieldKey + DateTime.Today.ToString("yyyyMMdd") + "000001";
}
//更新主键值
command = command = new SqlCommand("update PriOrders set KeyNumber = '" + strKeyNum + "' where KeyGroup = '" + strFieldKey + "'", connection);
command.Transaction = myTrans;
command.ExecuteNonQuery();
blnResult[1] = strKeyNum;
myTrans.Commit();
}
catch (Exception e)
{
myTrans.Rollback();
blnResult[0] = e.Message;
throw e;
}
return blnResult;
}
}
public static string[] getOrderNO(string strFieldKey, int OrderNum)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
connection.Open();
string[] blnResult = new string[2];
blnResult[0] = "";
blnResult[1] = "";
System.Data.SqlClient.SqlDataAdapter adapterSelect = new SqlDataAdapter();
SqlTransaction myTrans = connection.BeginTransaction();
try
{
SqlCommand command = new SqlCommand("SELECT KeyGroup,KeyNumber FROM PriOrders where KeyGroup = '" + strFieldKey + "'", connection);
adapterSelect.SelectCommand = command;
adapterSelect.SelectCommand.Transaction = myTrans;
DataSet dsOrder = new DataSet();
adapterSelect.Fill(dsOrder, basOrderData.BASORDER_TABLE);
string strKeyNum = dsOrder.Tables[basOrderData.BASORDER_TABLE].Rows[0][basOrderData.START_NUMBER_FIELD].ToString();
string strKeyNumB = dsOrder.Tables[basOrderData.BASORDER_TABLE].Rows[0][basOrderData.START_NUMBER_FIELD].ToString();
if (strKeyNum == DBNull.Value.ToString() || strKeyNum == "")
{
int intNum = 1000001 + OrderNum;
strKeyNum = strFieldKey + DateTime.Today.ToString("yyyyMMdd") + intNum.ToString().Substring(1, 6);
strKeyNumB = strFieldKey + DateTime.Today.ToString("yyyyMMdd") + "000001";
}
else
{
if (DateTime.Today.ToString("yyyyMMdd") == strKeyNum.Substring(2, 8))
{
int intNum = int.Parse(strKeyNum.Substring(10, 6));
intNum = 1000001 + intNum + OrderNum;
int intNumB = 1000001 + intNum;
strKeyNum = strKeyNum.Substring(0, 10) + intNum.ToString().Substring(1, 6);
strKeyNumB = strKeyNum.Substring(0, 10) + intNumB.ToString().Substring(1, 6);
}
else
{
int intNum = 1000001 + OrderNum;
strKeyNum = strFieldKey + DateTime.Today.ToString("yyyyMMdd") + intNum.ToString().Substring(1, 6);
strKeyNumB = strFieldKey + DateTime.Today.ToString("yyyyMMdd") + "000001";
}
}
//更新主键值
command = command = new SqlCommand("update PriOrders set KeyNumber = '" + strKeyNum + "' where KeyGroup = '" + strFieldKey + "'", connection);
command.Transaction = myTrans;
command.ExecuteNonQuery();
blnResult[1] = strKeyNumB;
myTrans.Commit();
}
catch (Exception e)
{
myTrans.Rollback();
blnResult[0] = e.Message;
throw e;
}
return blnResult;
}
}
public static string GeyPrimaryKey(string sTableName)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
string cmdText = "SELECT a.name FROM sys.syscolumns AS a INNER JOIN sys.sysobjects AS b ON a.id = b.parent_obj INNER JOIN sys.sysindexes AS c ON a.id = c.id AND b.name = c.name INNER JOIN sys.sysindexkeys AS d ON a.id = d.id AND c.indid = d.indid AND a.colid = d.colid WHERE (a.id = OBJECT_ID('" + sTableName + "')) AND (b.xtype = 'PK')";
connection.Open();
using (SqlCommand cmd = new SqlCommand())
{
try
{
PrepareCommand(cmd, connection, null, cmdText, null);
object obj = cmd.ExecuteScalar();
cmd.Parameters.Clear();
if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
{
return "";
}
else
{
return (string)obj;
}
}
catch (System.Data.SqlClient.SqlException E)
{
throw new Exception(E.Message);
}
}
}
}
/// <summary>
/// 海量数据插入，主键为自增
/// </summary>
/// <param name="SaveDT">数据表，表名称必须与数据库表名称相同</param>
/// <returns></returns>
public static string SaveHugeData(DataTable SaveDT)
{
try
{
SqlBulkCopy sqlBulkCopy = new SqlBulkCopy(ConnectConfig.DBConnectionString, SqlBulkCopyOptions.UseInternalTransaction);
sqlBulkCopy.DestinationTableName = SaveDT.TableName;
sqlBulkCopy.WriteToServer(SaveDT);
return "";
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
}
#region 数据库访问
/// <summary>
/// 根据SQLString 获取记录集
/// </summary>
/// <param name="commandText"></param>
/// <param name="strTabname"></param>
/// <returns></returns>
public static DataSet getTableData(string commandText, string strTabname, string connStr)
{
DataSet data = new DataSet();
System.Data.SqlClient.SqlDataAdapter adapter = new SqlDataAdapter();
SqlConnection Conn = new SqlConnection();
try
{
Conn.ConnectionString = connStr;
Conn.Open();
adapter.MissingSchemaAction = MissingSchemaAction.AddWithKey;
SqlCommand command = new SqlCommand(commandText, Conn);
adapter.SelectCommand = command;
adapter.MissingSchemaAction = MissingSchemaAction.AddWithKey;
if (strTabname != "")
adapter.Fill(data, strTabname);
else
adapter.Fill(data);
}
catch (System.Exception e)
{
throw e;
}
finally
{
adapter.Dispose();
adapter = null;
Conn.Close();
Conn.Dispose();
Conn = null;
}
return data;
}
public static int SqlExec(string SqlStr)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
connection.Open();
try
{
System.Data.SqlClient.SqlCommand SqlCmd = connection.CreateCommand();
SqlCmd.CommandText = SqlStr;
return SqlCmd.ExecuteNonQuery();
}
catch (Exception ex)
{
throw ex;
}
}
}
#endregion
#region wd add
/// <summary>
/// 判断是否存在某表的某个字段
/// </summary>
/// <param name="tableName">表名称</param>
/// <param name="columnName">列名称</param>
/// <returns>是否存在</returns>
public static bool ColumnExists(string tableName, string columnName)
{
string sql = "select count(1) from syscolumns where [id]=object_id('" + tableName + "') and [name]='" + columnName + "'";
object res = GetSingle(sql);
if (res == null)
{
return false;
}
return Convert.ToInt32(res) > 0;
}
public static int GetMaxID(string FieldName, string TableName)
{
string strsql = "select max(" + FieldName + ")+1 from " + TableName;
object obj = GetSingle(strsql);
if (obj == null)
{
return 1;
}
else
{
return int.Parse(obj.ToString());
}
}
public static bool Exists(string strSql)
{
object obj = GetSingle(strSql);
int cmdresult;
if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
{
cmdresult = 0;
}
else
{
cmdresult = int.Parse(obj.ToString());
}
if (cmdresult == 0)
{
return false;
}
else
{
return true;
}
}
/// <summary>
/// 表是否存在
/// </summary>
/// <param name="TableName"></param>
/// <returns></returns>
public static bool TabExists(string TableName)
{
string strsql = "select count(*) from sysobjects where id = object_id(N'[" + TableName + "]') and OBJECTPROPERTY(id, N'IsUserTable') = 1";
//string strsql = "SELECT count(*) FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[" + TableName + "]') AND type in (N'U')";
object obj = GetSingle(strsql);
int cmdresult;
if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
{
cmdresult = 0;
}
else
{
cmdresult = int.Parse(obj.ToString());
}
if (cmdresult == 0)
{
return false;
}
else
{
return true;
}
}
public static bool Exists(string strSql, params SqlParameter[] cmdParms)
{
object obj = GetSingle(strSql, cmdParms);
int cmdresult;
if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
{
cmdresult = 0;
}
else
{
cmdresult = int.Parse(obj.ToString());
}
if (cmdresult == 0)
{
return false;
}
else
{
return true;
}
}
/// <summary>
/// 执行一条计算查询结果语句，返回查询结果（object）。
/// </summary>
/// <param name="SQLString">计算查询结果语句</param>
/// <returns>查询结果（object）</returns>
public static object GetSingle(string SQLString)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
using (SqlCommand cmd = new SqlCommand(SQLString, connection))
{
try
{
connection.Open();
object obj = cmd.ExecuteScalar();
if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
{
return null;
}
else
{
return obj;
}
}
catch (System.Data.SqlClient.SqlException e)
{
connection.Close();
throw e;
}
}
}
}
public static object GetSingle(string SQLString, int Times)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
using (SqlCommand cmd = new SqlCommand(SQLString, connection))
{
try
{
connection.Open();
cmd.CommandTimeout = Times;
object obj = cmd.ExecuteScalar();
if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
{
return null;
}
else
{
return obj;
}
}
catch (System.Data.SqlClient.SqlException e)
{
connection.Close();
throw e;
}
}
}
}
/// <summary>
/// 执行一条计算查询结果语句，返回查询结果（object）。
/// </summary>
/// <param name="SQLString">计算查询结果语句</param>
/// <returns>查询结果（object）</returns>
public static object GetSingle(string SQLString, params SqlParameter[] cmdParms)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
using (SqlCommand cmd = new SqlCommand())
{
try
{
PrepareCommand(cmd, connection, null, SQLString, cmdParms);
object obj = cmd.ExecuteScalar();
cmd.Parameters.Clear();
if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
{
return null;
}
else
{
return obj;
}
}
catch (System.Data.SqlClient.SqlException e)
{
throw e;
}
}
}
}
/// <summary>
/// 执行查询语句，返回DataSet
/// </summary>
/// <param name="SQLString">查询语句</param>
/// <returns>DataSet</returns>
public static DataSet Query(string SQLString, params SqlParameter[] cmdParms)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
SqlCommand cmd = new SqlCommand();
PrepareCommand(cmd, connection, null, SQLString, cmdParms);
using (SqlDataAdapter da = new SqlDataAdapter(cmd))
{
DataSet ds = new DataSet();
try
{
da.Fill(ds, "ds");
cmd.Parameters.Clear();
}
catch (System.Data.SqlClient.SqlException ex)
{
throw new Exception(ex.Message);
}
return ds;
}
}
}
/// <summary>
/// 执行查询语句，返回DataSet
/// </summary>
/// <param name="SQLString">查询语句</param>
/// <returns>DataSet</returns>
public static DataSet Query(string SQLString)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
DataSet ds = new DataSet();
try
{
connection.Open();
SqlDataAdapter command = new SqlDataAdapter(SQLString, connection);
command.Fill(ds, "ds");
}
catch (System.Data.SqlClient.SqlException ex)
{
throw new Exception(ex.Message);
}
return ds;
}
}
public static DataSet Query(string SQLString, int Times)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
DataSet ds = new DataSet();
try
{
connection.Open();
SqlDataAdapter command = new SqlDataAdapter(SQLString, connection);
command.SelectCommand.CommandTimeout = Times;
command.Fill(ds, "ds");
}
catch (System.Data.SqlClient.SqlException ex)
{
throw new Exception(ex.Message);
}
return ds;
}
}
/// <summary>
/// 根据SQLString 获取记录集
/// </summary>
/// <param name="commandText"></param>
/// <param name="strTabname"></param>
/// <returns></returns>
public static DataSet Query(string commandText, string strTabname)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
SqlCommand cmd = new SqlCommand();
PrepareCommand(cmd, connection, null, commandText, null);
using (SqlDataAdapter da = new SqlDataAdapter(cmd))
{
DataSet ds = new DataSet();
try
{
da.MissingSchemaAction = MissingSchemaAction.AddWithKey;
if (strTabname != "")
da.Fill(ds, strTabname);
else
da.Fill(ds);
}
catch (System.Exception e)
{
throw e;
}
return ds;
}
}
}
/// <summary>
/// 执行多条SQL
/// 2011-04-11 解决排序问题
/// </summary>
/// <param name="hstSQlTabel">Key： TableName Value： SQLs</param>
/// <returns></returns>
public static DataSet Query(ArrayList hstSQlTabel)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
connection.Open();
using (SqlDataAdapter da = new SqlDataAdapter())
{
DataSet data = new DataSet();
SqlTransaction myTrans = connection.BeginTransaction();
da.MissingSchemaAction = MissingSchemaAction.AddWithKey;
try
{
for (int i = 0; i < hstSQlTabel.Count; i++)
{
Hashtable hst = (Hashtable)hstSQlTabel[i];
foreach (DictionaryEntry hstSql in hst)
{
DataSet ds = new DataSet();
SqlCommand cmd = new SqlCommand();
PrepareCommand(cmd, connection, myTrans, hstSql.Value.ToString(), null);
da.SelectCommand = cmd;
if (hstSql.Key.ToString() != "")
da.Fill(ds, hstSql.Key.ToString());
else
da.Fill(ds);
data.Merge(ds);
}
}
myTrans.Commit();
}
catch (System.Exception e)
{
myTrans.Rollback();
throw e;
}
return data;
}
}
}
/// <summary>
/// 执行多条SQL
/// 2011-04-11 解决多表问题
/// </summary>
/// <param name="hstSQlTabel">Key： TableName Value： SQLs</param>
/// <returns></returns>
public static DataSet Query(Hashtable hstSqlTable)
{
ArrayList arList = new ArrayList();
arList.Add(hstSqlTable);
return Query(arList);
}
#endregion
}
