当我使用for循环恢复许多SQL Server数据库时修复了卡住

Question

我需要遍历TreeView中的所有数据库,然后选择TreeNode作为要还原的数据库名称.如果我只选择1,2或3个数据库来恢复,我的代码工作正常.但如果我选择了很多数据库,它就会被挂起.

请检查我的代码并帮助我..

            foreach (TreeNode tn in trvList.Nodes)
            {
                if (tn.Checked == true)
                { 
                        strFileName = GetFileTorestor(strRealdb);//Check File Directory to restore example : C:data\tn.text.
                        if (strFileName != "")
                        {
                            RestoreDatabase(res, tn);
                        }
                        else
                        {
                            strErorLog += "\r\n -" + tn.Text;
                            blIsEror = true;
                            MessageBox.Show("Database " + tn.Text + " has not found!", "Information", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
                        }                                 
                }
            }       


    /// <summary>
    /// Restore database according to treenode selected.
    /// </summary>
    /// <param name="res"></param>
    /// <param name="tn"></param>
    private void RestoreDatabase(Restore res,TreeNode tn)
    {
        res.Database = tn.Text;
        res.Action = RestoreActionType.Database;
        res.Devices.AddDevice(strFileName, DeviceType.File);
        res.ReplaceDatabase = true;
        this.pgrRestore.Value = 0;
        this.pgrRestore.Maximum = 100;
        //res.Complete += new ServerMessageEventHandler(sqlRestore_Complete);
        res.PercentCompleteNotification = 5;
        res.PercentComplete += new PercentCompleteEventHandler(sqlRestore_PercentComplete);
        res.SqlRestore(DBHelper.Server);
        stLog += "\r\n " + tn.Text + " from file " + strFileName;//Record database name already restore to log text
        txtLog.Text = stLog;
        txtLog.Refresh();
    }

Answer 1

如果你的意思是卡住那个UI冻结了一段时间那么那是因为你在作为UI线程的主线程上击败了你的工作.由于线程忙于完成工作,因此无法进行UI交互.您应该看一下在BackgroundWorker后台执行您的工作并向UI报告进度.