Mobile RDA 同步数据库的类--转
Mobile RDA 同步数据库的类--转
using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
using System.Data.SqlServerCe;
using System.IO;
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namespace DataBaseCTLSpace
{
class DataBaseCTL
{
private string assemblyLocalFolder;
private SqlCeConnection SQLConn;
private string InternetURL;
private string OleDbConnectString;
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/// <summary>
/// 构造函数,构造一个操作数据库类
/// </summary>
/// <param name="ServerDataBase">服务器数据库名称</param>
/// <param name="DataBase">本地数据库名称</param>
/// <param name="ServerName">服务器IP,或者名称</param>
/// <param name="UserName">用户名</param>
/// <param name="PassWord">密码</param>
/// <param name="IISShareDir">IIS共享服务目录,构造InternetURL用</param>
public DataBaseCTL(string ServerDataBase, string LocalDataBase, string ServerName, string UserName, string PassWord, string IISShareDir)
{
assemblyLocalFolder = System.IO.Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().GetName().CodeBase);
assemblyLocalFolder = assemblyLocalFolder + "\" + LocalDataBase + ".sdf";
InternetURL = "http://" + ServerName + "/" + IISShareDir + "/sqlcesa30.dll";
OleDbConnectString = "Provider=sqloledb;server=" + ServerName + ";database=" + ServerDataBase
+ "; User Id=" + UserName + ";Password=" + PassWord;
}
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~DataBaseCTL()
{
SqlCeEngine engine = new SqlCeEngine("Data Source =" + assemblyLocalFolder);
engine.Shrink();
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}
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/// <summary>
/// 创建数据库文件
/// </summary>
/// <returns>成功 True, 失败 False 表示有文件或者出现异常</returns>
public bool CreateDatbase()
{
if (File.Exists(assemblyLocalFolder)) return false;
try
{
SqlCeEngine engine = new SqlCeEngine("Data Source =" + assemblyLocalFolder);
engine.CreateDatabase();
engine.Dispose();
return true;
}
catch
{
return false;
}
}
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/// <summary>
/// 删除数据库文件
/// </summary>
/// <returns>成功 True, 失败 False</returns>
public bool DeleteDatabase()
{
if (File.Exists(assemblyLocalFolder))
{
File.Delete(assemblyLocalFolder);
return true;
}
else
return false;
}
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/// <summary>
/// 在本地执行SQL
/// </summary>
/// <param name="SqlStr">SQL语句</param>
/// <returns>结果集</returns>
public ResultSetView ExecuteSqlLocal(string SqlStr,ResultSetView R)
{
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SqlCeConnection conn = new SqlCeConnection("Data Source =" + assemblyLocalFolder);
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// 创建并配置 SqlCeCommand 对象
SqlCeCommand cmd = conn.CreateCommand();
cmd.CommandText = SqlStr;
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// 创建 SqlCeResultSet 对象,并配置为可滚动、可更新、检测数据源更改
ResultSetOptions options = ResultSetOptions.Scrollable |
ResultSetOptions.Sensitive |
ResultSetOptions.Updatable;
SqlCeResultSet resultSet = cmd.ExecuteResultSet(options);
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// 创建 ResultSetView 对象,配置为只显示序号为 1,3,5,8 的列
ResultSetView resultSetView = resultSet.ResultSetView;
int[] ordinals = new int[] { 1, 3, 5, 8 };
resultSetView.Ordinals = ordinals;
R = resultSetView;
return resultSetView;
}
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/// <summary>
/// 在本地执行SQL
/// </summary>
/// <param name="SqlStr">SQL语句</param>
/// <returns>结果</returns>
public bool ExecuteSqlLocal(string SqlStr)
{
try
{
SqlCeConnection conn = new SqlCeConnection("Data Source =" + assemblyLocalFolder);
SqlCeCommand cmd = conn.CreateCommand();
cmd.CommandText = SqlStr;
conn.Open();
cmd.ExecuteNonQuery();
return true;
}
catch
{
return false;
}
}
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/// <summary>
/// 在服务器上执行Sql
/// </summary>
/// <param name="SqlStr">Sql语句</param>
/// <returns></returns>
public bool ExecuteSqlServer(string SqlStr)
{
try
{
SqlCeRemoteDataAccess rda = null;
rda = new SqlCeRemoteDataAccess();
rda.InternetUrl = InternetURL;
rda.LocalConnectionString = "Data Source =" + assemblyLocalFolder;
rda.SubmitSql(SqlStr,OleDbConnectString);
return true;
}
catch
{
return false;
}
}
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/// <summary>
/// 从服务器上下载表
/// </summary>
/// <param name="TableName">表名称</param>
/// <returns></returns>
public bool DownloadTable(string TableName)
{
if (ExecuteSqlLocal("select * from " + TableName))
{//有这个表
//提交服务器更新
if (!UPDateTable(TableName)) return false;
//删除这个表
if (!ExecuteSqlLocal("drop table " + TableName)) return false;
}
try
{
SqlCeRemoteDataAccess rda = null;
rda = new SqlCeRemoteDataAccess();
rda.InternetUrl = InternetURL;
rda.LocalConnectionString = "Data Source =" + assemblyLocalFolder;
rda.Pull(TableName, "Select * from " + TableName, OleDbConnectString, RdaTrackOption.TrackingOnWithIndexes);//
return true;
}
catch
{
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return false;
}
}
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/// <summary>
/// 把更改好的表提交到服务器上
/// </summary>
/// <param name="TableName">表名</param>
/// <returns></returns>
public bool UPDateTable(string TableName)
{
try
{
SqlCeRemoteDataAccess rda = null;
rda = new SqlCeRemoteDataAccess();
rda.InternetUrl = InternetURL;
rda.LocalConnectionString = "Data Source =" + assemblyLocalFolder;
rda.Push(TableName, OleDbConnectString);//
return true;
}
catch
{
return false;
}
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}
}
}
using System;
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