SQL Server数据库备份代码

 SQL Server数据库备份代码
string spath=Server.MapPath("../")+@"DataBase/DB";
if  (!System.IO.Directory.Exists(spath))
{
     System.IO.Directory.CreateDirectory(spath);
}
string sql = "BACKUP DATABASE cnepa TO Disk='"+Server.MapPath("../")+@"DataBase/DB/qytd.dat'" ;
try
{
     DB.SqlENQ(sql);
     this.RegisterClientScriptBlock("alert","<script>alert('备份成功')</script>");
}
catch
{
     this.RegisterClientScriptBlock("alert","<script>alert('备份失败')</script>");
}