asp.net/C# 备份与还原SqlServer数据库

asp.net/C# 备份与还原数据库

功能：
自动识别Web.Config配置信息.
备份与还原数据库.
代码如下：

using System;
using System.Configuration;
using System.Data.SqlClient;
using System.Data;
namespace OA.Web
{
/// <summary>
/// SqlDbBackUpRestore类,主要应用SQLDMO实现对Microsoft SQL Server数据库的备份和恢复
/// 请先给项目添加COM(Mircrosoft SQLDMO Object Library)引用
/// </summary>
public class SqlDbBackUpRestore
{
/// <summary>
/// sql服务器名称或者IP地址
/// </summary>
private string server;
/// <summary>
///用户名称
/// </summary>
private string uid;
/// <summary>
/// 用户密码
/// </summary>
private string pwd;
/// <summary>
/// 数据库名称
/// </summary>
private string database;
/// <summary>
/// Web.Config连接字符串
/// </summary>
private string conn;
/// <summary>
/// SqlDbBackUpRestore类的构造函数
/// </summary>
public SqlDbBackUpRestore()
{
conn = System.Configuration.ConfigurationSettings.AppSettings["ConnectionSqlServer"].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database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database恢复
/// </summary>
public string DbRestore(string url)
{
if (KillProcesses() != 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();
}
}
}
/// <summary>
/// 杀死Sql database 连接进程
/// </summary>
/// <returns></returns>
private bool KillProcesses()
{
SQLDMO.SQLServer svr = new SQLDMO.SQLServerClass();
try
{
svr.Connect(server, uid, pwd);
SQLDMO.QueryResults qr = svr.EnumProcesses(-1);
int iColPIDNum = -1;
int iColDbName = -1;
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() == database.ToUpper())
{
svr.KillProcess(lPID);
}
}
return true;
}
catch
{
//失败
return false;
}
finally
{
svr.DisConnect();
}
}
}
}

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