C#Winform之等待窗体

2021-08-19 07:51:19

窗体主要代码：
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public partial class frmWaitingNew : Form
   {
       public frmWaitingNew()
       {
           InitializeComponent();
       }
 
       private delegate void SetTextHandler(string text);
       public void SetText(string text)
       {
           if (this.lbl_UserMsg.InvokeRequired)
           {
               this.Invoke(new SetTextHandler(SetText), text);
           }
           else
           {
               this.lbl_UserMsg.Text = text;
           }
       }
 
       public bool IsShown = false;
       DateTime StarTime;
       private void frmWaitingNew_Shown(object sender, EventArgs e)
       {
           StarTime = ConvertEx.ToDateTimeEx("2014-06-15");
           timer1.Start();
           IsShown = true;
       }
 
       int RunSeconds = 0;
       private void timer1_Tick(object sender, EventArgs e)
       {
           txt_Time.Text = StarTime.AddSeconds(++RunSeconds).ToString("mm:ss");
       }
 
   }

等待窗体调用类：

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/// <summary>
   /// Using Singleton Design Pattern
   /// </summary>
   public class WaitFormService
   {
       public static void CreateWaitForm()
       {
           WaitFormService.Instance.CreateForm();
       }
 
       public static void CloseWaitForm()
       {
           WaitFormService.Instance.CloseForm();
       }
 
       public static void SetWaitFormCaption(string text)
       {
           WaitFormService.Instance.SetFormCaption(text);
       }
 
       private static WaitFormService _instance;
       private static readonly Object syncLock = new Object();
 
       public static WaitFormService Instance
       {
           get
           {
               if (WaitFormService._instance == null)
               {
                   lock (syncLock)
                   {
                       if (WaitFormService._instance == null)
                       {
                           WaitFormService._instance = new WaitFormService();
                       }
                   }
               }
               return WaitFormService._instance;
           }
       }
 
       private WaitFormService()
       {
       }
 
       private Thread waitThread;
       private frmWaitingNew waitForm;
 
       public void CreateForm()
       {
           try
           {
               if (waitThread != null)
               {
                   try
                   {
                       waitThread.Abort();
                       waitThread.Join();
                   }
                   catch (Exception)
                   {
                   }
               }
               while (waitThread != null && waitThread.ThreadState != ThreadState.Aborted)
                   Thread.Sleep(200);
 
               waitThread = new Thread(new ThreadStart(delegate()
               {
                   waitForm = new frmWaitingNew();
                   Application.Run(waitForm);
               }));
               waitThread.Start();
               ThreadWaite();
           }
           catch (Exception ex)
           {
               string sm = ex.Message;
           }
       }
 
       void ThreadWaite()
       {
           Thread.Sleep(200);
           if (!waitThread.IsAlive || waitForm == null || !waitForm.IsShown)
               Thread.Sleep(20);
 
       }
 
       public void CloseForm()
       {
           if (waitThread != null)
           {
               try
               {
                   //waitThread.Abort();
                   //就是在分页里面，不停的按下一页，下一页。Application.Run(waitForm);就会报错。使用下面代码
                   //waitForm.Close();
                   //waitForm.Dispose();
                   ThreadWaite();
                   waitForm.Invoke(new DClose(Close), null);
                   waitThread.Abort();
                   waitThread.Join();
                   waitThread.DisableComObjectEagerCleanup();
 
               }
               catch (Exception ex)
               {
                   Thread.Sleep(200);
                   ThreadWaite();
                   waitForm.Invoke(new DClose(Close), null);
                   waitThread.Abort();
                   waitThread.Join();
                   waitThread.DisableComObjectEagerCleanup();
               }
           }
       }
       public delegate void DClose();
 
       public void Close()
       {
           while ((int)waitForm.Handle < 0)
               Thread.Sleep(20);
           waitForm.Close();
       }
 
       public void SetFormCaption(string text)
       {
           if (waitForm != null)
           {
               try
               {
                   waitForm.SetText(text);
               }
               catch (Exception)
               {
               }
           }
       }
 
   }

 

Demo下载地址：http://pan.baidu.com/s/1pJ9HSRD

C#Winform之等待窗体

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