我有

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace Magicbit.Framework
{
public partial class DBTools : Form
{

private static DBTools _Instance = null;
public static DBTools Instance()
{
if (_Instance == null)
{
_Instance = new DBTools();
}
else
{
MessageBox.Show("已经有一个实例在运行！");
}
return _Instance;
}

public DBTools()
{
InitializeComponent();
}

private void BackAndRecoverDB_Load(object sender, EventArgs e)
{
this.txtSavePath.Text = Application.StartupPath;
//this.GetSQLServerList();
}
private void GetSQLServerList()
{
//get all available SQL Servers
SQLDMO._Application sqlApp = new SQLDMO.ApplicationClass();
SQLDMO.NameList sqlServers = sqlApp.ListAvailableSQLServers();
for (int i = 0; i < sqlServers.Count; i++)
{
object srv = sqlServers.Item(i + 1);
if (srv != null)
{
this.cboServers.Items.Add(srv);
}
}
if (this.cboServers.Items.Count > 0)
this.cboServers.SelectedIndex = 0;
else
this.cboServers.Text = "<No available SQL Servers>";

}
private void GetBackUpDB()
{
SQLDMO.Application sqlApp = new SQLDMO.ApplicationClass();
SQLDMO.SQLServer srv = new SQLDMO.SQLServer();
srv.Connect(this.cboServers.Text.Trim(),this.txtUserName.Text.Trim(),this.txtPassword.Text.Trim());
foreach (SQLDMO.Database db in srv.Databases)
{
if (db.Name != null)
this.cboDatabase.Items.Add(db.Name);
}

}
private void pictureBox1_Click(object sender, EventArgs e)
{
MessageBox.Show("欢迎使用数据库备份、还原工具，本工具将协助你备份和还原数据库，确保数据安全!", "备份您的数据库");
}

private void button1_Click(object sender, EventArgs e)
{
this.GetBackUpDB();
}
private void BackUpDB()
{

string selfName = this.txtSavePath.Text.Trim() + @"" + this.cboDatabase.Text.Trim() + "_"+ System.DateTime.Now.ToString("yyyyMMddHHmmss")+".DAT";
string deviceName = this.cboDatabase.Text.Trim()+"bak";
string remark = "数据备份";

//BACKUP DB
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(this.cboServers.Text.Trim(),this.txtUserName.Text.Trim(),this.txtPassword.Text.Trim());
oBackup.Action = SQLDMO.SQLDMO_BACKUP_TYPE.SQLDMOBackup_Database;
oBackup.Database = this.cboDatabase.Text.Trim();//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)
{
MessageBox.Show("数据备份失败： " + ex.ToString());
}
finally
{
oSQLServer.DisConnect();
}
}
private void Step(string message, int percent)
{
this.progressBar1.Value = percent;
}
private void button2_Click(object sender, EventArgs e)
{
this.Cursor = Cursors.WaitCursor;
this.label6.Visible = true;
this.progressBar1.Visible = true;
this.BackUpDB();
this.Cursor = Cursors.Default;
this.label6.Text = "备份已完成.";
}

public void RestoreDB()
{
string filePath = this.txtBackUpFile.Text.Trim();
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(this.cboServers.Text.Trim(),this.txtUserName.Text.Trim(),this.txtPassword.Text.Trim());
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 ;
}
for(int i=1;i<=qr.Rows;i++)
{
int lPID = qr.GetColumnLong(i,iColPIDNum) ;
string strDBName = qr.GetColumnString(i,iColDbName) ;
if (strDBName.ToUpper() == "CgRecord".ToUpper())
oSQLServer.KillProcess(lPID) ;
}

oRestore.Action = SQLDMO.SQLDMO_RESTORE_TYPE.SQLDMORestore_Database;
oRestore.Database = this.cboDBtoBackup.Text;
oRestore.Files = filePath;
oRestore.FileNumber = 1;
oRestore.ReplaceDatabase = true;
oRestore.SQLRestore(oSQLServer);

}
catch(System.Exception ex)
{
MessageBox.Show("数据还原失败： " + ex.ToString());
}
finally
{
oSQLServer.DisConnect();
}

}

private void button3_Click(object sender, EventArgs e)
{
this.folderBrowserDialog1.Description = "请选择备份文件存放目录";
this.folderBrowserDialog1.ShowNewFolderButton = true;
this.folderBrowserDialog1.ShowDialog();
this.txtSavePath.Text = this.folderBrowserDialog1.SelectedPath;
}

private void button4_Click(object sender, EventArgs e)
{
this.openFileDialog1.DefaultExt = "*.dat";
this.openFileDialog1.Title = "请选择要还原的数据库备份文件.";
this.openFileDialog1.ShowDialog();
this.txtBackUpFile.Text = this.openFileDialog1.FileName;
}

private void button5_Click(object sender, EventArgs e)
{
this.Cursor = Cursors.WaitCursor;
this.label6.Visible = true;
this.progressBar1.Visible = true;
this.RestoreDB();
this.Cursor = Cursors.Default;
this.label6.Text = "还原已完成.";
}

}
}