using System;
using System.Configuration;
using System.Data.SqlClient;
using System.Data;
namespace web.base_class
{
/// <summary>
/// DbOper类,主要应用SQLDMO实现对Microsoft SQL Server数据库的备份和恢复
/// </summary>
public class DbOper
{
private string server;
private string uid;
private string pwd;
private string database;
private string conn;
/// <summary>
/// DbOper类的构造函数
/// </summary>
public DbOper()
{
conn=System.Configuration.ConfigurationSettings.AppSettings["constr"].ToString();
server=cut(conn,"server=",";");
uid=cut(conn,"uid=",";");
pwd=cut(conn,"pwd=",";");
database=cut(conn,"database=",";");
}
public string cut(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>
/// 数据库备份
/// </summary>
public bool DbBackup(string url)
{
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 = url;//"d:\Northwind.bak";
oBackup.BackupSetName = database;
oBackup.BackupSetDescription = "数据库备份";
oBackup.Initialize = true;
oBackup.SQLBackup(oSQLServer);
return true;
}
catch
{
return false;
throw;
}
finally
{
oSQLServer.DisConnect();
}
}
/// <summary>
/// 数据库恢复
/// </summary>
public string DbRestore(string url)
{
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
{
oSQLServer.LoginSecure = false;
oSQLServer.Connect(server, uid, pwd);
oRestore.Action = SQLDMO.SQLDMO_RESTORE_TYPE.SQLDMORestore_Database;
oRestore.Database = database;
oRestore.Files = url;//@"d:\Northwind.bak";
oRestore.FileNumber = 1;
oRestore.ReplaceDatabase = true;
oRestore.SQLRestore(oSQLServer);
return "ok";
}
catch(Exception e)
{
return "恢复数据库失败";
throw;
}
finally
{
oSQLServer.DisConnect();
}
}
}
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","port");
try
{
conn1.Open();
cmd.ExecuteNonQuery();
return true;
}
catch(Exception ex)
{
return false;
}
finally
{
conn1.Close();
}
}
}
}
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