数据库：SQL Server ；引用SQLDMO
◆数据备份 ：
/// <summary>
/// 备份数据库
/// </summary>
private void btnBackUp_Click(object sender, System.EventArgs e)
{
this.Cursor = Cursors.WaitCursor;
this.label1.Text = " 正在进行档案库的数据备份，这可能需要几秒到几十的时间，请稍候...";
this.label1.Visible = true;
this.label1.Refresh();
this.pBar1.Visible = true;
//------------------------------------------------------------------------------------


string selfName = “D:\NorthwindBak“;
string deviceName = “NorthwindBak“;
string remark = "备份测试";

//◆数据备份：
SQLDMO.Backup oBackup = new SQLDMO.BackupClass();
SQLDMO.SQLServer oSQLServer = new SQLDMO.SQLServerClass();
oBackup.Action = 0 ;
oBackup.Initialize = true ;
SQLDMO.BackupSink_PercentCompleteEventHandler pceh = new SQLDMO.BackupSink_PercentCompleteEventHandler(Step);
oBackup.PercentComplete += pceh;

try
{
oSQLServer.LoginSecure = false;
oSQLServer.Connect(Common.MySettings.SqlServerName, "sa", "");
oBackup.Action = SQLDMO.SQLDMO_BACKUP_TYPE.SQLDMOBackup_Database;
oBackup.Database = "Northwind";//数据库名
oBackup.Files = selfName;//文件路径
oBackup.BackupSetName = deviceName;//备份名称
oBackup.BackupSetDescription = remark;//备份描述
oBackup.Initialize = true;
oBackup.SQLBackup(oSQLServer);

}
catch(System.Exception ex)
{
Common.ShowMsg("数据备份失败：\n" + ex.ToString());
}
finally
{
oSQLServer.DisConnect();
}

//------------------------------------------------------------------------------------
this.label1.Visible = false;
this.pBar1.Visible = false;
this.Cursor = Cursors.Default;
}


/// <summary>
/// 显示备份进度条
/// </summary>
private void Step(string message,int percent)
{
this.pBar1.Value = percent ;
}

◆数据还原 ：
/// <summary>
/// 还原数据库
/// </summary>
private void btnRestore_Click(object sender, System.EventArgs e)
{

this.Cursor = Cursors.WaitCursor;
this.label1.Text = " 正在进行档案库的数据还原，这可能需要几秒到几十的时间，请稍候...";
this.label1.Visible = true;
this.label1.Refresh();
this.pBar1.Visible = true;
//------------------------------------------------------------------------------------

string fileName = "NorthwindBak";
string filePath = "D:\NorthwindBak";
string remark = "备份测试";

SQLDMO.Restore oRestore = new SQLDMO.RestoreClass();
SQLDMO.SQLServer oSQLServer = new SQLDMO.SQLServerClass();
oRestore.Action = 0 ;
SQLDMO.RestoreSink_PercentCompleteEventHandler pceh = new SQLDMO.RestoreSink_PercentCompleteEventHandler(Step);
oRestore.PercentComplete += pceh;
try
{
oSQLServer.Connect(Common.MySettings.SqlServerName, "sa", "");
SQLDMO.QueryResults qr = oSQLServer.EnumProcesses(-1) ;
int iColPIDNum = -1 ;
int iColDbName = -1 ;

//杀死其它的连接进程
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 ;