C#中结合使用SQLDMO实现备份、还原SQLserver数据库

找了好几个，这个例子还算不错！
主要在还原数据库时，有杀死其它连接进程的代码

Code
  1using System;
  2using System.Collections.Generic;
  3using System.ComponentModel;
  4using System.Data;
  5using System.Drawing;
  6using System.Text;
  7using System.Windows.Forms;
  8namespace Magicbit.Framework
  9{
 10     public partial class DBTools : Form
 11     {
 12         private static DBTools _Instance = null;      
 13         public static DBTools Instance()      
 14         {
 15             if (_Instance == null)
 16             {
 17                 _Instance = new DBTools();
 18             }
 19             else
 20             {
 21                 MessageBox.Show("已经有一个实例在运行！");
 22             }
 23             return _Instance;
 24         }
 25        
 26         public DBTools()
 27         {
 28             InitializeComponent();
 29         }
 30         private void BackAndRecoverDB_Load(object sender, EventArgs e)
 31         {
 32             this.txtSavePath.Text = Application.StartupPath;
 33             //this.GetSQLServerList();
 34         }
 35         private void GetSQLServerList()
 36         {
 37             //get all available SQL Servers    
 38             SQLDMO._Application sqlApp = new SQLDMO.ApplicationClass();
 39             SQLDMO.NameList sqlServers = sqlApp.ListAvailableSQLServers();
 40             for (int i = 0; i < sqlServers.Count; i++)
 41             {
 42                 object srv = sqlServers.Item(i + 1);
 43                 if (srv != null)
 44                 {
 45                     this.cboServers.Items.Add(srv);
 46                 }
 47             }
 48             if (this.cboServers.Items.Count > 0)
 49                 this.cboServers.SelectedIndex = 0;
 50             else
 51                 this.cboServers.Text = "<No available SQL Servers>"; 
 52        
 53         }
 54         private void GetBackUpDB()
 55         {
 56             SQLDMO.Application sqlApp    = new SQLDMO.ApplicationClass();
 57             SQLDMO.SQLServer srv         = new SQLDMO.SQLServer();
 58             srv.Connect(this.cboServers.Text.Trim(),this.txtUserName.Text.Trim(),this.txtPassword.Text.Trim());
 59             foreach (SQLDMO.Database db in srv.Databases)
 60             {
 61                 if (db.Name != null)
 62                     this.cboDatabase.Items.Add(db.Name);
 63             }
 64        
 65         }
 66         private void pictureBox1_Click(object sender, EventArgs e)
 67         {
 68             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");
 69         }
 70         private void button1_Click(object sender, EventArgs e)
 71         {
 72             this.GetBackUpDB();
 73         }
 74         private void BackUpDB()
 75         {
 76             string selfName = this.txtSavePath.Text.Trim() + @"" + this.cboDatabase.Text.Trim() + "_"+ System.DateTime.Now.ToString("yyyyMMddHHmmss")+".DAT";
 77             string deviceName = this.cboDatabase.Text.Trim()+"bak";
 78             string remark = "数据备份";
 79             //BACKUP DB
 80             SQLDMO.Backup oBackup = new SQLDMO.BackupClass();
 81             SQLDMO.SQLServer oSQLServer = new SQLDMO.SQLServerClass();
 82             oBackup.Action = 0 ; 
 83             oBackup.Initialize = true ; 
 84             SQLDMO.BackupSink_PercentCompleteEventHandler pceh = new SQLDMO.BackupSink_PercentCompleteEventHandler(Step); 
 85             oBackup.PercentComplete += pceh; 
 86             try
 87             {
 88                 oSQLServer.LoginSecure = false;
 89                 oSQLServer.Connect(this.cboServers.Text.Trim(),this.txtUserName.Text.Trim(),this.txtPassword.Text.Trim());
 90                 oBackup.Action = SQLDMO.SQLDMO_BACKUP_TYPE.SQLDMOBackup_Database;
 91                 oBackup.Database = this.cboDatabase.Text.Trim();//数据库名
 92                 oBackup.Files = selfName;//文件路径
 93                 oBackup.BackupSetName = deviceName;//备份名称
 94                 oBackup.BackupSetDescription = remark;//备份描述
 95                 oBackup.Initialize = true;
 96                 oBackup.SQLBackup(oSQLServer);
 97             }
 98             catch(System.Exception ex)
 99             {
100                 MessageBox.Show("数据备份失败： " + ex.ToString());
101             }
102             finally
103             {
104                 oSQLServer.DisConnect();
105             }
106         }
107         private void Step(string message, int percent)
108         {
109             this.progressBar1.Value = percent;
110         }
111         private void button2_Click(object sender, EventArgs e)
112         {
113             this.Cursor = Cursors.WaitCursor;
114             this.label6.Visible = true;
115             this.progressBar1.Visible = true;
116             this.BackUpDB();
117             this.Cursor = Cursors.Default;
118             this.label6.Text = "备份已完成.";
119         }
120         public void RestoreDB()
121         { 
122             string filePath = this.txtBackUpFile.Text.Trim();
123             SQLDMO.Restore oRestore = new SQLDMO.RestoreClass();
124             SQLDMO.SQLServer oSQLServer = new SQLDMO.SQLServerClass();
125             oRestore.Action = 0 ; 
126             SQLDMO.RestoreSink_PercentCompleteEventHandler pceh = new SQLDMO.RestoreSink_PercentCompleteEventHandler(Step); 
127             oRestore.PercentComplete += pceh; 
128             try
129             {
130             oSQLServer.Connect(this.cboServers.Text.Trim(),this.txtUserName.Text.Trim(),this.txtPassword.Text.Trim());
131             SQLDMO.QueryResults qr = oSQLServer.EnumProcesses(-1) ; 
132             int iColPIDNum = -1 ; 
133             int iColDbName = -1 ; 
134             //杀死其它的连接进程
135             for(int i=1;i<=qr.Columns;i++) 
136             { 
137                 string strName = qr.get_ColumnName(i) ; 
138                 if (strName.ToUpper().Trim() == "SPID") 
139                 { 
140                      iColPIDNum = i ; 
141                 } 
142                 else if (strName.ToUpper().Trim() == "DBNAME") 
143                 { 
144                     iColDbName = i ; 
145                 } 
146                 if (iColPIDNum != -1 && iColDbName != -1) 
147                 break ; 
148                 } 
149                 for(int i=1;i<=qr.Rows;i++) 
150                 { 
151                     int lPID = qr.GetColumnLong(i,iColPIDNum) ; 
152                     string strDBName = qr.GetColumnString(i,iColDbName) ; 
153                     if (strDBName.ToUpper() == "CgRecord".ToUpper()) 
154                     oSQLServer.KillProcess(lPID) ; 
155                 } 
156                 oRestore.Action = SQLDMO.SQLDMO_RESTORE_TYPE.SQLDMORestore_Database;
157                 oRestore.Database = this.cboDBtoBackup.Text;
158                 oRestore.Files = filePath;
159                 oRestore.FileNumber = 1;
160                 oRestore.ReplaceDatabase = true;
161                 oRestore.SQLRestore(oSQLServer);
162             }
163             catch(System.Exception ex)
164             {
165                 MessageBox.Show("数据还原失败： " + ex.ToString());
166             }
167             finally
168             {
169                 oSQLServer.DisConnect();
170             }
171
172        
173         }
174         private void button3_Click(object sender, EventArgs e)
175         {
176             this.folderBrowserDialog1.Description = "请选择备份文件存放目录";
177             this.folderBrowserDialog1.ShowNewFolderButton = true;
178             this.folderBrowserDialog1.ShowDialog();
179             this.txtSavePath.Text = this.folderBrowserDialog1.SelectedPath;
180         }
181         private void button4_Click(object sender, EventArgs e)
182         {
183             this.openFileDialog1.DefaultExt = "*.dat";
184             this.openFileDialog1.Title = "请选择要还原的数据库备份文件.";
185             this.openFileDialog1.ShowDialog();
186             this.txtBackUpFile.Text = this.openFileDialog1.FileName;
187         }
188         private void button5_Click(object sender, EventArgs e)
189         {
190             this.Cursor = Cursors.WaitCursor;
191             this.label6.Visible = true;
192             this.progressBar1.Visible = true;
193             this.RestoreDB();
194             this.Cursor = Cursors.Default;
195             this.label6.Text = "还原已完成.";
196         }
197     }
198}