Question

我决定创建一个聊天应用程序，我需要单个表单运行2次（即）我需要在运行它时查看同一个表单作为两个不同的实例...是否有可能实现它。 / p>

注意：我不需要在任何事件中完成它。每当我运行程序时，必须运行2个实例。

Answer 1

两种解决方案：

只需构建可执行文件并根据需要运行尽可能多的实例。

使用更复杂的解决方案，使用Application.Run Method (ApplicationContext)。请参阅下面的简化MSDN示例。

class MyApplicationContext : ApplicationContext
{
    private int formCount;
    private Form1 form1;
    private Form1 form2;

    private MyApplicationContext()
    {
        formCount = 0;

        // Create both application forms and handle the Closed event 
        // to know when both forms are closed.
        form1 = new Form1();
        form1.Closed += new EventHandler(OnFormClosed);
        formCount++;

        form2 = new Form1();
        form2.Closed += new EventHandler(OnFormClosed);
        formCount++;

        // Show both forms.
        form1.Show();
        form2.Show();
    }

    private void OnFormClosed(object sender, EventArgs e)
    {
        // When a form is closed, decrement the count of open forms. 

        // When the count gets to 0, exit the app by calling 
        // ExitThread().
        formCount--;
        if (formCount == 0)
            ExitThread();
    }

    [STAThread]
    static void Main(string[] args)
    {

        // Create the MyApplicationContext, that derives from ApplicationContext, 
        // that manages when the application should exit.

        MyApplicationContext context = new MyApplicationContext();

        // Run the application with the specific context. It will exit when 
        // all forms are closed.
        Application.Run(context);
    }
}

Answer 2

是的，您可以轻松创建同一表单的多个实例。例如：

new ChatWindowForm.Show();

另请参阅Control.Show()方法文档。

运行多个Windows窗体应用程序实例

2 个答案: