[转载]如何用SQLDMO在ASP.NET页面下实现数据库的备份与恢复

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本文转载自：http://www.cnblogs.com/terrylee/articles/253667.html

原文作者：

网名：TerryLee
本名：李会军
位置：中国北京

我们知道，用SQLDMO可以实现对数据库的备份与恢复，下面给出简单的实现方法。
首先需要添加对SQLDMO引用

1.实现数据库的备份：

1 }

2.实现数据库恢复：
在恢复时要注意先杀掉当前数据库的所有进程

1 }

完整的操作类如下：

  1using System;
  2using System.Collections;
  3using System.Data;
  4using System.Data.SqlClient;
  5
  6namespace DbBackUp
  7

在相应的按钮

1<asp:Button id="wbtn_Backup" runat="server" Width="60px" Text="备份" CssClass="Button"></asp:Button>

单击事件里调用即可：

1 }

^_^

TerryLee
出处：http://terrylee.cnblogs.com
本文版权归作者和博客园共有，欢迎转载，但未经作者同意必须保留此段声明，且在文章页面明显位置给出原文连接，否则保留追究法律责任的权利。

个人对上面的版本做了一些小的修整，谢谢李会军作出的共享.

using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
using System.Data.SqlClient;

namespace WindowsApp
{
    /// <summary>
    /// 功能描述：实现SQL Server 2005数据库的备份和恢复
    /// </summary>
    public class DBOperate
    {
        /// <summary>
        /// 服务器
        /// </summary>
        private string _server;
        /// <summary>
        /// 服务器
        /// </summary>
        public string Server
        {
            get { return _server; }
            set { _server = value; }
        }
        /// <summary>
        /// 登录名
        /// </summary>
        private string _uid;
        /// <summary>
        /// 登录名
        /// </summary>
        public string Uid
        {
            get { return _uid; }
            set { _uid = value; }
        }
        /// <summary>
        /// 登录密码
        /// </summary>
        private string _pwd;
        /// <summary>
        /// 登录密码
        /// </summary>
        public string Pwd
        {
            get { return _pwd; }
            set { _pwd = value; }
        }
        /// <summary>
        /// 数据库
        /// </summary>
        private string _database;
        /// <summary>
        /// 数据库
        /// </summary>
        public string Database
        {
            get { return _database; }
            set { _database = value; }
        }
        /// <summary>
        /// 连接字符串
        /// </summary>
        private string _conn;
        /// <summary>
        /// 连接字符串
        /// </summary>
        public string Conn
        {
            get { return _conn; }
            set { _conn = value; }
        }
        /// <summary>
        /// 默认构造函数
        /// </summary>
        public DBOperate()
        {

        }
        /// <summary>
        /// 构造函数
        /// </summary>
        /// <param name="database">数据库</param>
        /// <param name="uid">登录名</param>
        /// <param name="pwd">登录密码</param>
        /// <param name="server">服务器</param>
        public DBOperate(string database,string uid,string pwd,string server)
        {
            this._server = server;
            this._uid = uid;
            this._pwd = pwd;
            this._database = database;
        }
        /// <summary>
        ///     切割字符串
        /// </summary>
        /// <param name="str"></param>
        /// <param name="bg"></param>
        /// <param name="ed"></param>
        /// <returns></returns>
        public string StringCut(string str, string bg, string ed)
        {
            string sub;
            sub = str.Substring(str.IndexOf(bg) + bg.Length);
            sub = sub.Substring(0, sub.IndexOf(";"));
            return sub;
        }
        /// <summary>
        ///     构造文件名
        /// </summary>
        /// <returns>文件名</returns>
        private string CreatePath()
        {
            string currTime = System.DateTime.Now.ToString();
            currTime = currTime.Replace("-", "");
            currTime = currTime.Replace(":", "");
            currTime = currTime.Replace(" ", "");
            currTime = currTime.Substring(0, 12);
            string path = @"d:\\aaa\\";
            path += _database;
            path += "_db_";
            path += currTime;
            path += ".BAK";
            return path;
        }
        /// <summary>
        /// 数据库备份
        /// </summary>
        /// <param name="file">备份文件的完整存放路径，包括文件名</param>
        /// <returns>备份是否成功</returns>
        public bool DBBackup(string file)
        {
            //string path = CreatePath();
            SQLDMO.Backup backup = new SQLDMO.BackupClass();
            SQLDMO.SQLServer sqlserver = new SQLDMO.SQLServerClass();
            try
            {
                sqlserver.LoginSecure = false;
                sqlserver.Connect(_server, _uid, _pwd);
                backup.Action = SQLDMO.SQLDMO_BACKUP_TYPE.SQLDMOBackup_Database;
                backup.Database = _database;
                backup.Files = file;
                backup.BackupSetName = _database;
                backup.BackupSetDescription = "数据库备份";
                backup.Initialize = true;
                backup.SQLBackup(sqlserver);

                return true;
            }
            catch (Exception ex)
            {

                throw ex;
            }
            finally
            {
                sqlserver.DisConnect();
            }
        }
        /// <summary>
        ///     数据库恢复
        /// </summary>
        /// <param name="file">备份文件的完整存放路径，包括文件名</param>
        /// <returns></returns>
        public string DBRestore(string file)
        {

                SQLDMO.Restore restore = new SQLDMO.RestoreClass();
                SQLDMO.SQLServer sqlserver = new SQLDMO.SQLServerClass();
                try
                {
                    killProcess(_database);
                    sqlserver.LoginSecure = false;
                    sqlserver.Connect(_server, _uid, _pwd);
                    restore.Action = SQLDMO.SQLDMO_RESTORE_TYPE.SQLDMORestore_Database;
                    restore.Database = _database;
                    //自行修改
                    restore.Files = file;
                    restore.FileNumber = 1;

                    restore.ReplaceDatabase = true;
                    restore.SQLRestore(sqlserver);

                    return "ok";
                }
                catch (Exception ex)
                {

                    throw ex;
                }
                finally
                {
                    sqlserver.DisConnect();
                }

        }
        /// <summary>
        /// 杀死当前库的所有进程
        /// </summary>
        /// <param name="dbName">数据库名称</param>
        /// <returns></returns>
        private bool killProcess(string dbName)
        {
            SqlConnection conn = new SqlConnection("server=" + _server + ";uid=" + _uid + ";pwd=" + _pwd + ";database=master");
            SqlCommand comm = new SqlCommand("killspid", conn);
            comm.CommandType = CommandType.StoredProcedure;
            comm.Parameters.AddWithValue("@dbname", dbName);
            try
            {
                conn.Open();
                comm.ExecuteNonQuery();
                return true;
            }
            catch (Exception ex)
            {
                throw ex;
            }
            finally
            {
                conn.Close();
            }
        }
    }

}

使用范例如下：

private void backup_Click(object sender, EventArgs e)
        {
            DBOperate dbOperate = new DBOperate("DevTest", "sa", "123", "sql2005");
            try
            {

                if (dbOperate.DBBackup(@"d:\123.bak"))
                {
                    MessageBox.Show("备份成功", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show("数据库备份失败，失败原因：" + ex.Message, "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
            }
        }

        private void restore_Click(object sender, EventArgs e)
        {

            DBOperate dbOperate = new DBOperate("DevTest", "sa", "123", @"sql2005");
            try
            {
                if (dbOperate.DBRestore(@"d:\123.bak").Equals("ok"))
                {
                    MessageBox.Show("恢复成功", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show("数据库恢复失败，失败原因：" + ex.Message,"提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
            }
        }

程序中使用的存储过程killspid如下：

use master
go
---------------------------------------
--关闭指定数据库的全部访问进程
---------------------------------------------
create proc killspid
@dbname varchar(200) --要关闭进程的数据库名
as
declare @sql nvarchar(500)
declare @spid nvarchar(20)
declare #tb cursor for
select spid=cast(spid as varchar(20)) from master..sysprocesses where dbid=db_id(@dbname)
open #tb
fetch next from #tb into @spid
while @@fetch_status=0
begin
exec('kill '+@spid)
fetch next from #tb into @spid
end
close #tb
deallocate #tb
go