c#、sql数据库备份还原

王朝学院·作者佚名  2016-08-27
窄屏简体版  字體: |||超大  

1.在项目中添加SQLDmo dll文件引用(SQLDMO(SQL Distributed Management Objects,SQL分布式管理对象))

2在相应页面加using SQLDMO引用

3.下面是用C#语言书写的用于Microsoft SQL Server数据库备份和恢复的类:

using System;

namespace DbService

{

/// <summary>

/// DbOper类,主要实现对Microsoft SQL Server数据库的备份和恢复

/// </summary>

public sealed class DbOper

{

/// <summary>

/// DbOper类的构造函数

/// </summary>

PRivate DbOper()

{

}

/// <summary>

/// 数据库备份

/// </summary>

public static void DbBackup()

{

try

{

SQLDMO.Backup oBackup = new SQLDMO.BackupClass();

SQLDMO.SQLServer oSQLServer = new SQLDMO.SQLServerClass();

oSQLServer.LoginSecure = false;

oSQLServer.Connect("localhost", "sa", "1234");

oBackup.Action = SQLDMO.SQLDMO_BACKUP_TYPE.SQLDMOBackup_Database;

oBackup.Database = "Northwind";

oBackup.Files = @"d://Northwind.bak";

oBackup.BackupSetName = "Northwind";

oBackup.BackupSetDescription = "数据库备份";

oBackup.Initialize = true;

oBackup.SQLBackup(oSQLServer);

}

catch

{

throw;

}

}

/// <summary>

/// 数据库恢复

/// </summary>

public static void DbRestore()

{

try

{

SQLDMO.Restore oRestore = new SQLDMO.RestoreClass();

SQLDMO.SQLServer oSQLServer = new SQLDMO.SQLServerClass();

oSQLServer.LoginSecure = false;

oSQLServer.Connect("localhost", "sa", "1234");

oRestore.Action = SQLDMO.SQLDMO_RESTORE_TYPE.SQLDMORestore_Database;

oRestore.Database = "Northwind";

oRestore.Files = @"d://Northwind.bak";

oRestore.FileNumber = 1;

oRestore.ReplaceDatabase = true;

oRestore.SQLRestore(oSQLServer);

}

catch

{

throw;

}

}

}

}

参见在C#中运用SQLDMO备份和恢复Microsoft SQL Server数据库

http://dev.csdn.net/develop/article/28/28564.shtm

当不使用要恢复的数据库时以上方法可行,但当你使用了数据库时就必须杀死该进程

代码如下:

/// <summary>

/// 还原数据库函数

/// </summary>

/// <param name="strDbName">数据库名</param>

/// <param name="strFileName">数据库备份文件的完整路径名</param>

/// <returns></returns>

public bool RestoreDB(string strDbName,string strFileName)

{

//PBar = pgbMain ;

SQLDMO.SQLServer svr = new SQLDMO.SQLServerClass() ;

try

{

//服务器名,数据库用户名,数据库用户名密码

svr.Connect("localhost","sa","hai") ;

SQLDMO.QueryResults qr = svr.EnumProcesses(-1) ;

int iColPIDNum = -1 ;

int iColDbName = -1 ;

for(int i=1;i<=qr.Columns;i++)

{

string strName = qr.get_ColumnName(i) ;

if (strName.ToUpper().Trim() == "SPID")

{

iColPIDNum = i ;

}

else if (strName.ToUpper().Trim() == "DBNAME")

{

iColDbName = i ;

}

if (iColPIDNum != -1 && iColDbName != -1)

break ;

}

//杀死使用strDbName数据库的进程

for(int i=1;i<=qr.Rows;i++)

{

int lPID = qr.GetColumnLong(i,iColPIDNum) ;

string strDBName = qr.GetColumnString(i,iColDbName) ;

if (strDBName.ToUpper() == strDbName.ToUpper())

{

svr.KillProcess(lPID) ;

}

}

SQLDMO.Restore res = new SQLDMO.RestoreClass() ;

res.Action = 0 ;

res.Files = strFileName ;

res.Database = strDbName ;

res.ReplaceDatabase = true ;

res.SQLRestore(svr) ;

return true ;

}

catch

{

return false;

}

finally

{

svr.DisConnect() ;

}

}

 
 
 
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