我如何杀死正在运行的线程？ [英] How Can I Kill A Running Thread?

问题描述

你好，



我创建了一个SplasScreen类来在一个小表单上显示处理...（或任何其他）gif。 （在这个网站上，我读了一篇关于此的文章，但我不记得是谁写的）当我调用ShowSplash方法时，它在屏幕上显示出一个闪光。我使用CloseSplash方法关闭它。通常，CloseSplash方法有效，但有时则不然。我不明白这是什么原因。这些是代码：

Hello,

I created a SplasScreen class to show "processing..."(or any other) gif on a little form. (In this site, I read an article about this but i can't remember who wrote it) When i call the ShowSplash method, it shows a splash on the screen. And i use the CloseSplash method to close it. Usually, the CloseSplash method works, but sometimes it doesn't. I don't understand what can be the reason of this. And those are the codes:

public class SplashScreen : Form
   {
       public Bitmap SImage {get; set;}
       Thread t;

       public void Flash()
       {
           PictureBox pb = new PictureBox();
           pb.SizeMode = PictureBoxSizeMode.AutoSize;
           pb.Image = SImage;
           this.Width = pb.Width;
           this.Height = pb.Height;

           this.Controls.Add(pb);
           this.TopMost = true;
           this.StartPosition = FormStartPosition.CenterScreen;
           this.FormBorderStyle = FormBorderStyle.None;
           Application.Run(this);
       }


       public void sClose()
       {
           this.Close();
       }
       public void ShowSplash()
       {
           t = new Thread(new ThreadStart(Flash));
           t.IsBackground = true;
           t.SetApartmentState(ApartmentState.STA);
           t.Start();
       }
       public void CloseSplash()
       {
           if (this.InvokeRequired)
           {
               this.Invoke(new MethodInvoker(sClose));
           }

       }

   }

以及使用它的示例：

And an example for using it:

SplashScreen sc = new SplashScreen();
           sc.SImage = (Bitmap)Image.FromFile("processing.gif");
           sc.ShowSplash();

           //... codes codes codes...

           sc.CloseSplash();

问候

Regards

推荐答案

你必须保持一个对你的正在运行的线程的引用，必须在类级别声明局部变量 t （可能有更好的名称）然后当你要关闭线程时你必须调用：

You have to keep a reference to your running thread, the local variable t have to be declared at the class level (maybe with a better name) then when you want to close the thread you have to invoke:

if(t!= null && t.IsAlive()) //To make shore that the thread is running!
       t.Abort();

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