asp.net下实现数据库的备份与恢复

WebDataBak.aspx.cs

bakServer.cs为自定义类代码

核心代码：

1.

private void BtnDataBackup_Click(object sender, System.EventArgs e)
{
if ( lstDb.Items.Count == 0 )
{
pub.Alert("数据库列表不能为空！", this.Page);
}
else if( txtInFile.Text =="" )
{
pub.Alert("备份文件名称不能为空！", this.Page);

}
else if( txtDbName.Text =="" || txtUserName.Text == "")
{
pub.Alert("数据库，用户不能为空！！",this.Page);

}
else
{
BtnDataRestore.Enabled = false;
BtnQuery.Enabled = false;
btnCear.Enabled = false;
if ( baks.BackUPDB(lstDb.SelectedItem.ToString(),txtInFile.Text,txtDbName.Text,txtUserName.Text,txtPwd.Text) == true )
{
pub.Alert("备份成功！",this.Page);
}
else
{
pub.Alert("要备份的路径错误不存在,请输入正确路径!！",this.Page);
}
BtnDataRestore.Enabled = true;
BtnQuery.Enabled = true;
btnCear.Enabled = true;
}
}

private void BtnDataRestore_Click(object sender, System.EventArgs e)
{
//恢复数据库
if ( lstDb.Items.Count == 0 )
{
pub.Alert("数据库列表不能为空！", this.Page);
}
else if ( txtOutFile.Text =="" )
{
pub.Alert("还原文件名称不能为空！", this.Page);

}
else if( txtDbName.Text =="" || txtUserName.Text == "")
{
pub.Alert("数据库，用户不能为空！！",this.Page);

}
else
{
BtnDataBackup.Enabled = false;
BtnQuery.Enabled = false;
btnCear.Enabled = false;

if ( baks.RestoreDB(lstDb.SelectedItem.ToString(),txtOutFile.Text,txtDbName.Text,txtUserName.Text,txtPwd.Text) == true )
{
pub.Alert("恢复成功！",this.Page);
}
else
{
pub.Alert("要恢复的数据库文件不存在,请输入正确路径!！",this.Page);
}
BtnDataBackup.Enabled = true;
BtnQuery.Enabled = true;
btnCear.Enabled = true;
}
}

2.

namespace WebSearch
{
///
/*--------------------------------------------------------------------------
系统名称： xxxxx

设计时间：2005-09-03
代码设计者： winzheng
模块名称： asp.net下sqlserver 2000 数据库备份与还原
模块标识： DbBAK
--------------------------------------------------------------------------
*/
public class bakServer
{
string ServerName; //数据服务器名称
string UserName; //用户名称
string Password; //用户密码
string message; //消息提示

public bakServer()
{
//
// TODO: 在此处添加构造函数逻辑
//
}
///
/// 取得数据库服务器列表
///
/// 数据库服务器列表
public ArrayList GetServerList()
{
ArrayList alServers = new ArrayList() ;
SQLDMO.ApplicationClass sqlApp = new SQLDMO.ApplicationClass();
try
{
SQLDMO.NameList serverList = sqlApp.ListAvailableSQLServers() ;
if(serverList !=null)
{
for(int i = 1;i<= serverList.Count;i++)
{
alServers.Add(serverList.Item(i)) ;
}
}
else
{
message="你的系统需要打上SQL SERVER 2000 SP3这个补丁";
}
}
catch(Exception e)
{

message = "取数据库服务器列表出错：" +e.Message;

}
finally
{
sqlApp.Quit() ;
}
return alServers ;
}
///
/// 错误消息处理
///
/// 消息信息
public string Msg()
{
return message;
}
///
/// 取得指定数据库列表
///
/// 服务器名称
/// 用户名称
/// 用户密码
/// 数据库列表
public ArrayList GetDbList(string strServerName,string strUserName,string strPwd)
{
ServerName = strServerName ;
UserName = strUserName ;
Password = strPwd ;

ArrayList alDbs = new ArrayList() ;
SQLDMO.ApplicationClass sqlApp = new SQLDMO.ApplicationClass() ;
SQLDMO.SQLServer svr = new SQLDMO.SQLServerClass() ;
try
{
svr.Connect(ServerName,UserName,Password) ;
foreach(SQLDMO.Database db in svr.Databases)
{
if(db.Name!=null)
alDbs.Add(db.Name) ;
}
}
catch(Exception err)
{
// throw(new Exception("连接数据库出错："+e.Message)) ;
message = "连接数据库出错：" +err.Message;
}
finally
{
svr.DisConnect() ;
sqlApp.Quit() ;
}
return alDbs ;
}
///
/// 数据库名称
/// 备份文件名
/// 服务器名称
/// 用户名称
/// 密码
/// 备份成功返回true ，否则返回false
public bool BackUPDB(string strDbName,string strFileName, string strServerName,string strUserName,string strPwd)
{
ServerName = strServerName ;
UserName = strUserName ;
Password = strPwd ;
SQLDMO.SQLServer svr = new SQLDMO.SQLServerClass() ;
try
{
svr.Connect(ServerName,UserName,Password) ;
SQLDMO.Backup bak = new SQLDMO.BackupClass();
bak.Action = 0 ;
bak.Initialize = true ;
SQLDMO.BackupSink_PercentCompleteEventHandler pceh = new SQLDMO.BackupSink_PercentCompleteEventHandler(Step);
bak.PercentComplete += pceh;
bak.Files = strFileName;
bak.Database = strDbName;
bak.SQLBackup(svr);
return true ;
}
catch(Exception err)
{
// throw(new Exception("备份数据库失败"+err.Message)) ;
message = "备份数据库失败：" +err.Message;
return false ;
}
finally
{
svr.DisConnect() ;
}
}

/// 备份文件名
/// 状态条控件名称
/// 服务器名称
/// 用户名称
/// 密码
/// 恢复成功返回true ，否则返回false
public bool RestoreDB(string strDbName,string strFileName,string strServerName,string strUserName,string strPwd )
{
SQLDMO.SQLServer svr = new SQLDMO.SQLServerClass() ;
try
{
ServerName = strServerName ;
UserName = strUserName ;
Password = strPwd ;

svr.Connect(ServerName,UserName,Password) ;
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 ;
}

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 ;
SQLDMO.RestoreSink_PercentCompleteEventHandler pceh = new SQLDMO.RestoreSink_PercentCompleteEventHandler(Step);
res.PercentComplete += pceh;
res.Files = strFileName ;

res.Database = strDbName ;
res.ReplaceDatabase = true ;
res.SQLRestore(svr) ;
return true ;
}
catch(Exception err)
{

message = "恢复数据库失败,请关闭所有和该数据库连接的程序！" +err.Message;
return false;
}
finally
{
svr.DisConnect() ;
}
}

}
}