.net调用存储过程分页
存储过程1
create PROCEDURE gettotalnums
(
@TableNames NVARCHAR(200),
@Filter nvarchar(200))
AS
IF @Filter = ''
SET @Filter = ' WHERE 1=1'
ELSE
SET @Filter = ' WHERE ' + @Filter
EXECUTE('select count(*) from '+@TableNames+' '+@Filter)
存储过程2
create PROCEDURE [fenye]
@TableNames VARCHAR(200), --表名，可以是多个表，但不能用别名
@PrimaryKey VARCHAR(100), --主键，可以为空，但@Order为空时该值不能为空
@Fields VARCHAR(200), --要取出的字段，可以是多个表的字段，可以为空，为空表示select *
@PageSize INT, --每页记录数
@CurrentPage INT, --当前页，0表示第1页
@Filter VARCHAR(200) = '', --条件，可以为空，不用填 where
@Group VARCHAR(200) = '', --分组依据，可以为空，不用填 group by
@Order VARCHAR(200) = '' --排序，可以为空，为空默认按主键升序排列，不用填 order by
AS
BEGIN
DECLARE @SortColumn VARCHAR(200)
DECLARE @Operator CHAR(2)
DECLARE @SortTable VARCHAR(200)
DECLARE @SortName VARCHAR(200)
IF @Fields = ''
SET @Fields = '*'
IF @Filter = ''
SET @Filter = 'WHERE 1=1'
ELSE
SET @Filter = 'WHERE ' + @Filter
IF @Group <>''
SET @Group = 'GROUP BY ' + @Group
IF @Order <> ''
BEGIN
DECLARE @pos1 INT, @pos2 INT
SET @Order = REPLACE(REPLACE(@Order, ' asc', ' ASC'), ' desc', ' DESC')
IF CHARINDEX(' DESC', @Order) > 0
IF CHARINDEX(' ASC', @Order) > 0
BEGIN
IF CHARINDEX(' DESC', @Order) < CHARINDEX(' ASC', @Order)
SET @Operator = '<='
ELSE
SET @Operator = '>='
END
ELSE
SET @Operator = '<='
ELSE
SET @Operator = '>='
SET @SortColumn = REPLACE(REPLACE(REPLACE(@Order, ' ASC', ''), ' DESC', ''), ' ', '')
SET @pos1 = CHARINDEX(',', @SortColumn)
IF @pos1 > 0
SET @SortColumn = SUBSTRING(@SortColumn, 1, @pos1-1)
SET @pos2 = CHARINDEX('.', @SortColumn)
IF @pos2 > 0
BEGIN
SET @SortTable = SUBSTRING(@SortColumn, 1, @pos2-1)
IF @pos1 > 0
SET @SortName = SUBSTRING(@SortColumn, @pos2+1, @pos1-@pos2-1)
ELSE
SET @SortName = SUBSTRING(@SortColumn, @pos2+1, LEN(@SortColumn)-@pos2)
END
ELSE
BEGIN
SET @SortTable = @TableNames
SET @SortName = @SortColumn
END
END
ELSE
BEGIN
SET @SortColumn = @PrimaryKey
SET @SortTable = @TableNames
SET @SortName = @SortColumn
SET @Order = @SortColumn
SET @Operator = '>='
END
DECLARE @type varchar(50)
DECLARE @prec int
SELECT @type=t.name, @prec=c.prec
FROM sysobjects o
JOIN syscolumns c on o.id=c.id
JOIN systypes t on c.xusertype=t.xusertype
WHERE o.name = @SortTable AND c.name = @SortName
IF CHARINDEX('char', @type) > 0
SET @type = @type + '(' + CAST(@prec AS varchar) + ')'
DECLARE @TopRows INT
SET @TopRows = @PageSize * @CurrentPage + 1
PRINT @type
DECLARE @sql NVARCHAR(4000)
SET @Sql = 'DECLARE @SortColumnBegin ' + @type + '
SET ROWCOUNT ' + Cast(@TopRows as VARCHAR(10))+ ' SELECT @SortColumnBegin=' +
@SortColumn + ' FROM ' + @TableNames + ' ' + @Filter + ' ' + @Group + ' ORDER BY ' + @Order + '
SET ROWCOUNT ' + CAST(@PageSize AS VARCHAR(10)) + '
SELECT ' + @Fields + ' FROM ' + @TableNames + ' ' + @Filter + ' AND ' + @SortColumn + '' + @Operator + '@SortColumnBegin ' + ISNULL(@Group,'') + ' ORDER BY ' + @Order + ''
-- Print(@sql)
Exec(@sql)
END
public class DbHelper{
public static SqlConnection getcon()
{
//string connectionstring = ConfigurationManager.ConnectionStrings["zhang"].ConnectionString;
string connectionstring = ConfigurationManager.AppSettings["zhang"];
SqlConnection dbconn = new SqlConnection(connectionstring);
if (dbconn == null)
{
dbconn.Open();
}
else if (dbconn.State == ConnectionState.Closed)
{
dbconn.Open();
}
else if (dbconn.State == ConnectionState.Broken)
{
dbconn.Close();
dbconn.Open();
}
return dbconn;
}
//返回数据集
public static DataTable myDataAdapter(string str)
{
SqlConnection myconn = getcon();
try
{
SqlDataAdapter odr = new SqlDataAdapter(str, myconn);
DataSet ds = new DataSet();
odr.Fill(ds);
return ds.Tables[0];
}
catch (Exception ex)
{
throw (ex);
}
finally
{
myconn.Dispose();
myconn.Close();
}
}
public static int ExcuteCommand(string sql)
{
SqlConnection myconn = getcon();
int result = -1;
try
{
SqlCommand cmd = new SqlCommand(sql, myconn);
result = cmd.ExecuteNonQuery();
}
catch (Exception ex)
{
throw (ex);
}
finally
{
myconn.Close();
}
return result;
}
public static int ExecuteProcCommand(string proc)
{
SqlConnection myconn = getcon();
SqlCommand cmd = new SqlCommand(proc, myconn);
cmd.CommandType = CommandType.StoredProcedure;
int result = -1;
try
{
result = cmd.ExecuteNonQuery();
}
catch (Exception ex)
{
throw ex;
}
finally
{
myconn.Close();
myconn.Dispose();
}
return result;
}
public static DataTable myDataAdapter(string str, params SqlParameter[] values)
{
SqlConnection myconn = getcon();
try
{
SqlCommand cmd = new SqlCommand(str, myconn);
cmd.Parameters.AddRange(values);
SqlDataAdapter odr = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
odr.Fill(ds);
return ds.Tables[0];
}
catch (Exception ex)
{
throw (ex);
}
finally
{
myconn.Dispose();
myconn.Close();
}
}
//更新、删除或插入数据
public static void myCommand(string sql)
{
SqlConnection myconn = getcon();
try
{
SqlCommand cmd = new SqlCommand(sql, myconn);
cmd.ExecuteNonQuery();
}
catch (Exception ex)
{
throw (ex);
}
finally
{
myconn.Dispose();
myconn.Close();
}
}
public static int Count(string sql)
{
SqlConnection myconn = getcon();
int num = 0;
try
{
SqlCommand cmd = new SqlCommand(sql, myconn);
num = Convert.ToInt32(cmd.ExecuteScalar());
}
catch (Exception ex)
{
throw (ex);
}
finally
{
myconn.Dispose();
myconn.Close();
}
return num;
}
public static void myCommand2(string sql, string vfile)
{
SqlConnection myconn = getcon();
try
{
SqlCommand cmd = new SqlCommand(sql, myconn);
cmd.Parameters.AddWithValue("@id", vfile);
cmd.ExecuteNonQuery();
}
catch (Exception ex)
{
throw (ex);
}
finally
{
myconn.Dispose();
myconn.Close();
}
}
//判断数据是否存在
public static bool myDataReader(string sql)
{
SqlConnection myconn = getcon();
try
{
SqlCommand rcmd = new SqlCommand(sql, myconn);
SqlDataReader reader = rcmd.ExecuteReader();
bool ifread;
if (reader.Read())
ifread = true;
else
ifread = false;
rcmd.Dispose();
return ifread;
}
catch (Exception ex)
{
throw (ex);
}
finally
{
myconn.Dispose();
myconn.Close();
}
}
//读出目标数据
public static string ReadOut(string sql, int field)
{
SqlConnection myconn = getcon();
try
{
string result;
SqlCommand objcmd = new SqlCommand(sql, myconn);
SqlDataReader objdr = objcmd.ExecuteReader();
if (objdr.Read())
{
objcmd.Dispose();
return result = objdr[field].ToString();
}
else
{
objcmd.Dispose();
return "没有该记录";
}
}
catch (Exception ex)
{
throw (ex);
}
finally
{
myconn.Dispose();
myconn.Close();
}
}
public static string ReadOut2(string sql)
{
SqlConnection myconn = getcon();
try
{
string result;
SqlCommand objcmd = new SqlCommand(sql, myconn);
SqlDataReader objdr = objcmd.ExecuteReader();
if (objdr.Read())
{
objcmd.Dispose();
return result = objdr[0].ToString();
}
else
{
objcmd.Dispose();
return "";
}
}
catch (Exception ex)
{
throw (ex);
}
finally
{
myconn.Dispose();
myconn.Close();
}
}
public static int ExecuteCommand(string sql, params SqlParameter[] values)
{
SqlConnection myconn = getcon();
int result = -1;
try
{
SqlCommand cmd = new SqlCommand(sql, myconn);
cmd.Parameters.AddRange(values);
result = cmd.ExecuteNonQuery();
}
catch (Exception ex)
{
throw (ex);
}
finally
{
myconn.Dispose();
myconn.Close();
}
return result;
}
public static int ExecuteCommand(string sql)
{
SqlConnection myconn = getcon();
int result = -1;
try
{
SqlCommand cmd = new SqlCommand(sql, myconn);
result = cmd.ExecuteNonQuery();
}
catch (Exception ex)
{
throw (ex);
}
finally
{
myconn.Dispose();
myconn.Close();
}
return result;
}
//返回一条记录
public static DataRow GetDataRow(string sql, string TableName)
{
SqlConnection myconn = getcon();
try
{
SqlDataAdapter odr1 = new SqlDataAdapter(sql, myconn);
DataSet ds = new DataSet();
odr1.Fill(ds, TableName);
return ds.Tables[0].Rows[0];
}
catch (Exception ex)
{
throw (ex);
}
finally
{
myconn.Dispose();
myconn.Close();
}
}
public static bool IsNumeric(string str)
{
Regex RegNum = new Regex(@"^[0-9]*[1-9][0-9]*$");
str = str.Replace(" ", "");
if (RegNum.IsMatch(str))
{
return true;
}
else
{
return false;
}
}
public static string rootstr()
{
return HttpContext.Current.Server.MapPath("~").ToString();
}
public static bool AdminLimits(string _AdminID, int _start)
{
bool _limit = false;
if (!string.IsNullOrEmpty(_AdminID))
{
try
{
if (GetUserLimits(_AdminID, _start) == "1")
{
_limit = true;
}
else
{
_limit = false;
}
}
catch
{
_limit = false;
}
}
return _limit;
}
public static string GetUserLimits(string _limitsStr, int _start)
{
string _tem = string.Empty;
if (!string.IsNullOrEmpty(_limitsStr))
{
_tem = _limitsStr.Substring(_start, 1);
}
return _tem;
}
public static SqlDataReader GetReader(string safeSql)
{
SqlConnection conn = getcon();
SqlCommand cmd = new SqlCommand(safeSql, conn);
SqlDataReader reader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
reader.Close();
return reader;
}
public static SqlDataReader GetReader(string sql, params SqlParameter[] values)
{
SqlConnection conn = getcon();
SqlCommand cmd = new SqlCommand(sql, conn);
cmd.Parameters.AddRange(values);
SqlDataReader reader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
reader.Close();
conn.Close();
return reader;
}
public static DataTable GetDataSet(string safeSql)
{
SqlConnection conn = getcon();
DataSet ds = new DataSet();
SqlCommand cmd = new SqlCommand(safeSql, conn);
SqlDataAdapter da = new SqlDataAdapter(cmd);
da.Fill(ds);
conn.Close();
return ds.Tables[0];
}
public static DataTable GetDataSet(CommandType cmdType, string cmdText, params SqlParameter[] cmdParms)
{
SqlConnection conn = getcon();
DataSet ds = new DataSet();
SqlCommand cmd = new SqlCommand(cmdText, conn);
PrepareCommand(cmd, conn, null, cmdType, cmdText, cmdParms);
SqlDataAdapter da = new SqlDataAdapter(cmd);
da.Fill(ds);
conn.Close();
return ds.Tables[0];
}
public static SqlDataReader ExecuteReader(CommandType cmdType, string cmdText, params SqlParameter[] cmdParms)
{
SqlCommand cmd = new SqlCommand();
SqlConnection conn = getcon();
PrepareCommand(cmd, conn, null, cmdType, cmdText, cmdParms);
SqlDataReader rdr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
cmd.Parameters.Clear();
rdr.Close();
conn.Close();
return rdr;
}
public static object ExecuteScalar(CommandType cmdType, string cmdText, params SqlParameter[] cmdParms)
{
SqlCommand cmd = new SqlCommand();
using (SqlConnection conn = getcon())
{
PrepareCommand(cmd, conn, null, cmdType, cmdText, cmdParms);
object val = cmd.ExecuteScalar();
cmd.Parameters.Clear();
conn.Close();
return val;
}
}
public static object ExecuteScalar(SqlConnection conn, CommandType cmdType, string cmdText, params SqlParameter[] cmdParms)
{
SqlCommand cmd = new SqlCommand();
PrepareCommand(cmd, conn, null, cmdType, cmdText, cmdParms);
object val = cmd.ExecuteScalar();
cmd.Parameters.Clear();
return val;
}
private static void PrepareCommand(SqlCommand cmd, SqlConnection conn, SqlTransaction trans, CommandType cmdType, 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 = cmdType;
if (cmdParms != null)
{
foreach (SqlParameter parm in cmdParms)
cmd.Parameters.Add(parm);
}
}
public static void ExecuteNonQuery(string sql)
{
SqlConnection conn = getcon();
SqlCommand cmd = new SqlCommand(sql,conn);
cmd.ExecuteNonQuery();
conn.Close();
}
/// <summary>
/// 传入SQL语句,返回int
/// </summary>
/// <param name="sql"></param>
/// <returns></returns>
/// <summary>
///
/// </summary>
/// <param name="Name">需要分页的表明</param>
/// <param name="pk">主键名</param>
/// <param name="fields">需要取出的字段,留空则为*</param>
/// <param name="pagesize">每页的记录数</param>
/// <param name="CurrentPage">当前页</param>
/// <param name="Filter">条件，可以为空，不用填 where</param>
/// <param name="Group">分组依据，可以为空，不用填 group by</param>
/// <param name="order">排序，可以为空，为空默认按主键升序排列，不用填 order by</param>
/// <returns></returns>
public static DataTable Pagedlist(string Name, string pk, string fields, int pagesize, int CurrentPage, string Filter, string Group, string order)
{
CurrentPage = CurrentPage - 1;
DataTable dt = GetDataSet(CommandType.StoredProcedure, "fenye",
new SqlParameter("@TableNames", Name),
new SqlParameter("@PrimaryKey", pk),
new SqlParameter("@Fields", fields),
new SqlParameter("@PageSize", pagesize),
new SqlParameter("@CurrentPage", CurrentPage),
new SqlParameter("@Filter", Filter),
new SqlParameter("@Group", Group),
new SqlParameter("@Order", order)
);
return dt;
}
public static int fenye_num(string Name, string Filter)
{
return (int)ExecuteScalar(CommandType.StoredProcedure, "gettotalnums",
new SqlParameter("@TableNames", Name),
new SqlParameter("@Filter", Filter));
}
/// <summary>
///
/// </summary>
/// <param name="Name">需要分页的表明</param>
/// <param name="pk">主键名</param>
/// <param name="fields">需要取出的字段,留空则为*</param>
/// <param name="pagesize">每页的记录数</param>
/// <param name="CurrentPage">当前页</param>
/// <param name="Filter">条件，可以为空，不用填 where</param>
/// <param name="Group">分组依据，可以为空，不用填 group by</param>
/// <param name="order">排序，可以为空，为空默认按主键升序排列，不用填 order by</param>
/// <param name="objanp">传递aspnetpager控件</param>
/// <returns></returns>
public static DataTable Paged(string Name, string pk, string fields, int pagesize, int CurrentPage, string Filter, string Group, string order, AspNetPager objanp)
{
CurrentPage = CurrentPage - 1;
DataTable dt = GetDataSet(CommandType.StoredProcedure, "fenye",
new SqlParameter("@TableNames", Name),
new SqlParameter("@PrimaryKey", pk),
new SqlParameter("@Fields", fields),
new SqlParameter("@PageSize", pagesize),
new SqlParameter("@CurrentPage", CurrentPage),
new SqlParameter("@Filter", Filter),
new SqlParameter("@Group", Group),
new SqlParameter("@Order", order)
);
objanp.RecordCount = fenye_num(Name, Filter);
return dt;
}
CS 代码
public int page=1;
private void binddata(int page)
{
DataTable dt = DbHelper.Paged("news", "id", "", AspNetPager1.PageSize, page, "", "", "id desc", AspNetPager1);
this.Repeater1.DataSource = dt;
this.Repeater1.DataBind();
}
protected void AspNetPager1_PageChanged(object sender, EventArgs e)
{
int currentpage = AspNetPager1.CurrentPageIndex;
binddata(currentpage);
}
