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
在工具箱处右击找到上面相应的值
1.实现数据库的备份：
/**//// <summary>
/// 数据库备份
/// </summary>
/// <returns>备份是否成功</returns>
public bool DbBackup()
{
string path = CreatePath();
SQLDMO.Backup oBackup = new SQLDMO.BackupClass();
SQLDMO.SQLServer oSQLServer = new SQLDMO.SQLServerClass();
try
{
oSQLServer.LoginSecure = false;
oSQLServer.Connect(server,uid, pwd);
oBackup.Action = SQLDMO.SQLDMO_BACKUP_TYPE.SQLDMOBackup_Database;
oBackup.Database = database;
oBackup.Files = path;
oBackup.BackupSetName = database;
oBackup.BackupSetDescription = "数据库备份";
oBackup.Initialize = true;
oBackup.SQLBackup(oSQLServer);
return true;
}
catch(Exception ex)
{
return false;
throw ex;
}
finally
{
oSQLServer.DisConnect();
}
}
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
/**//// <summary>
/// 数据库恢复
/// </summary>
public string DbRestore()
{
if(exepro()!=true)//执行存储过程
{
return "操作失败";
}
else
{
SQLDMO.Restore oRestore = new SQLDMO.RestoreClass();
SQLDMO.SQLServer oSQLServer = new SQLDMO.SQLServerClass();
try
{
exepro();
oSQLServer.LoginSecure = false;
oSQLServer.Connect(server, uid, pwd);
oRestore.Action = SQLDMO.SQLDMO_RESTORE_TYPE.SQLDMORestore_Database;
oRestore.Database = database;
/**////自行修改
oRestore.Files = @"d:\aaa\aaa.bak";
oRestore.FileNumber = 1;
oRestore.ReplaceDatabase = true;
oRestore.SQLRestore(oSQLServer);
return "ok";
}
catch(Exception e)
{
return "恢复数据库失败";
throw e;
}
finally
{
oSQLServer.DisConnect();
}
}
}
/**//// <summary>
/// 杀死当前库的所有进程
/// </summary>
/// <returns></returns>
private bool exepro()
{
SqlConnection conn1 = new SqlConnection("server="+server+";uid="+uid+";pwd="+pwd+";database=master");
SqlCommand cmd = new SqlCommand("killspid",conn1);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add("@dbname","aaa");
try
{
conn1.Open();
cmd.ExecuteNonQuery();
return true;
}
catch(Exception ex)
{
return false;
}
finally
{
conn1.Close();
}
}
完整的操作类如下：
using System;
using System.Collections;
using System.Data;
using System.Data.SqlClient;
namespace DbBackUp
{
/**//// <summary>
/// 创建人：Terrylee
/// 创建时间：2005年8月1日
/// 功能描述：实现数据库的备份和还原
/// 更新记录：
/// </summary>
public class DbOperate
{
/**//// <summary>
/// 服务器
/// </summary>
private string server;
/**//// <summary>
/// 登录名
/// </summary>
private string uid;
/**//// <summary>
/// 登录密码
/// </summary>
private string pwd;
/**//// <summary>
/// 要操作的数据库
/// </summary>
private string database;
/**//// <summary>
/// 数据库连接字符串
/// </summary>
private string conn;
/**//// <summary>
/// DbOperate类的构造函数
/// 在这里进行字符串的切割，获取服务器，登录名，密码，数据库
/// </summary>
public DbOperate()
{
conn = System.Configuration.ConfigurationSettings.AppSettings["constr"].ToString();
server = StringCut(conn,"server=",";");
uid = StringCut(conn,"uid=",";");
pwd = StringCut(conn,"pwd=",";");
database = StringCut(conn,"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>
/// <returns>备份是否成功</returns>
public bool DbBackup()
{
string path = CreatePath();
SQLDMO.Backup oBackup = new SQLDMO.BackupClass();
SQLDMO.SQLServer oSQLServer = new SQLDMO.SQLServerClass();
try
{
oSQLServer.LoginSecure = false;
oSQLServer.Connect(server,uid, pwd);
oBackup.Action = SQLDMO.SQLDMO_BACKUP_TYPE.SQLDMOBackup_Database;
oBackup.Database = database;
oBackup.Files = path;
oBackup.BackupSetName = database;
oBackup.BackupSetDescription = "数据库备份";
oBackup.Initialize = true;
oBackup.SQLBackup(oSQLServer);
return true;
}
catch(Exception ex)
{
return false;
throw ex;
}
finally
{
oSQLServer.DisConnect();
}
}
/**//// <summary>
/// 数据库恢复
/// </summary>
public string DbRestore()
{
if(exepro()!=true)//执行存储过程
{
return "操作失败";
}
else
{
SQLDMO.Restore oRestore = new SQLDMO.RestoreClass();
SQLDMO.SQLServer oSQLServer = new SQLDMO.SQLServerClass();
try
{
exepro();
oSQLServer.LoginSecure = false;
oSQLServer.Connect(server, uid, pwd);
oRestore.Action = SQLDMO.SQLDMO_RESTORE_TYPE.SQLDMORestore_Database;
oRestore.Database = database;
/**////自行修改
oRestore.Files = @"d:\aaa\aaa.bak";
oRestore.FileNumber = 1;
oRestore.ReplaceDatabase = true;
oRestore.SQLRestore(oSQLServer);
return "ok";
}
catch(Exception e)
{
return "恢复数据库失败";
throw e;
}
finally
{
oSQLServer.DisConnect();
}
}
}
/**//// <summary>
/// 杀死当前库的所有进程
/// </summary>
/// <returns></returns>
private bool exepro()
{
SqlConnection conn1 = new SqlConnection("server="+server+";uid="+uid+";pwd="+pwd+";database=master");
SqlCommand cmd = new SqlCommand("killspid",conn1);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add("@dbname","aaa");
try
{
conn1.Open();
cmd.ExecuteNonQuery();
return true;
}
catch(Exception ex)
{
return false;
}
finally
{
conn1.Close();
}
}
}
}
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：
/**//// <summary>
/// 备份按钮
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void wbtn_Backup_Click(object sender, System.EventArgs e)
{
DbOperate dbop = new DbOperate();
dbop.DbBackup();
}
存储过程建立
首先打开MASTER数据库
use master
执行下面SQL语句
create proc killspid (@dbname varchar(20))
as
begin
declare @sql nvarchar(500)
declare @spid int
set @sql='declare getspid cursor for
select spid from sysprocesses where dbid=db_id('''+@dbname+''')'
exec (@sql)
open getspid
fetch next from getspid into @spid
while @@fetch_status < >-1
begin
exec('kill '+@spid)
fetch next from getspid into @spid
end
close getspid
deallocate getspid
end
restore database
create proc killspid (@dbname varchar(20))
as
begin
declare @sql nvarchar(500)
declare @spid int
set @sql='declare getspid cursor for
select spid from sysprocesses where dbid=db_id('''+@dbname+''')'
exec (@sql)
open getspid
fetch next from getspid into @spid
while @@fetch_status < >-1
begin
exec('kill '+@spid)
fetch next from getspid into @spid
end
close getspid
deallocate getspid
end
