使用Invoke方法外螺纹关闭窗体 [英] Close a form from an external thread using the Invoke method

问题描述

我不得不从一个线程关闭窗体，我使用窗体的Invoke方法来调用Close（）方法。

I have to close a Form from a thread and I am using the Invoke method of the Form for calling the Close() method.

的问题是，当收盘时，形式布置，我得到一个InvalidOperationExecption机智的消息调用或BeginInvoke可直到窗口句柄已创建不能在一个控件调用。

The problem is that when closing, the form is disposed and I get an InvalidOperationExecption wit the message "Invoke or BeginInvoke cannot be called on a control until the window handle has been created.".

我已经得到了步入中的关闭方法，但我不想与正常运行的可能错误调试的风险，只有当这个异常。

I have got this exception only when debugging with a "Step Into" in the Close method but I don't want to risk with a possible error on normal running.

这是一个示例代码重现它：

This is an example code to reproduce it:

 private void Form1_Load(object sender, EventArgs e)
 {
     Thread thread = new Thread(CloseForm);
     thread.Start();
 }

 private void CloseForm()
 {
     this.Invoke(new EventHandler(
         delegate
         {
             Close(); // Entering with a "Step Into" here it crashes.
         } 
     ));
 }

的形式设置在表单的自动生成的代码（我会喜欢不修改）：

The form is disposed in the automatic generated code for the form (which I would like not to modify):

    protected override void Dispose(bool disposing)
    {
        if (disposing && (components != null))
        {
            components.Dispose();
        }
        base.Dispose(disposing);
    }

我将不胜感激，如果有人可以给我这个或另一种方式的解决方案。从另一个线程关闭窗体

I would appreciate it if someone could give me a solution for this or another way to close a form from another thread.

推荐答案

从任何其他线程可以执行这个（从.NET 2.0）：

From any other thread you can execute this (from .NET 2.0) :

myform.Invoke((MethodInvoker)delegate() { myform.Close(); });

注意：如果您有误差调用或BeginInvoke的可直到窗口句柄已创建不能在一个控件调用你必须做的是这样的：

Note : If you have error Invoke or BeginInvoke cannot be called on a control until the window handle has been created you have to do like this :

if (InvokeRequired)
{
    Invoke((MethodInvoker)delegate()
    {
        Close();
    });
}
else
{
    Close();
}

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