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1.備份

        SqlConnection connection = new SqlConnection(ConfigurationManager.AppSettings["Connection"]);
        string dbFileName = DateTime.Now.ToString("yyyyMMddHHmmss")+".bak";
        try
        {
            SqlCommand command = new SqlCommand("use master;backup database xxdl to disk=@path;", connection);
            connection.Open();
            string path = Server.MapPath("~\\App_Data") + "\\" + dbFileName;
            command.Parameters.AddWithValue("@path", path);
            command.ExecuteNonQuery();
            lblBackup.Text = "數(shù)據(jù)庫備份成功";
        }
        catch (Exception ex)
        {

            lblBackup.Text = ex.Message;
        }
        finally
        {
            connection.Close();
        }
       
        Bind();//產(chǎn)生了新備份文件，更新下拉框

2 還原

        SqlConnection conn = new SqlConnection(ConfigurationManager.AppSettings["Connection"]);
        string dbFileName = ddlRestore.SelectedValue;
        if (dbFileName == string.Empty)
        {
            lblRestore.Text = "沒有數(shù)據(jù)庫備份文件，請(qǐng)先備份";
            return;
        }
        try
        {
         string sql2 = "Alter Database xxdl Set Offline with Rollback immediate;use master;restore database xxdl  from disk=@path With Replace;Alter Database xxdl  Set OnLine With rollback Immediate;";
         SqlCommand command = new SqlCommand(sql2,conn);
         conn.Open();
         string path = Server.MapPath("~\\App_Data") + "\\" + dbFileName;
         command.Parameters.AddWithValue("@path", path);
         command.ExecuteNonQuery();
            lblRestore.Text = "數(shù)據(jù)庫還原成功";
        }
        catch (System.Exception ex)
        {
            lblRestore.Text = ex.Message;
        }
        finally
        {
            conn.Close();
            Session.Abandon();
            Response.Redirect("login.aspx");
        }