在c#中的事件处理程序中定义了变量后，如何访问事件处理程序外部的变量? [英] How to access a variable outside an event handler when it is defined within the event handler in c#?

问题描述

下面是我在C#Windows Forms应用程序中的一些代码.

Below is some of my code in a c# windows forms application.

它分配一个随机整数来处理.我如何访问handle的新值，以便此按钮事件之外的其他函数调用可以使用它，因为c#中没有全局变量?

It assigns a random Integer to handle. How can I access the new value of handle so it can be used by other function calls outside this button event since there is no global variables in c#?

我尝试使用方法，但是当我在按钮事件之外调用它时，它仍然无法识别句柄.

I've tried using a Method but it still wont recognise handle when I call it outside the button event.

我还能用什么来制作我的GUI，以便在按下此按钮之前不能使用其他一些控件?

Also what would I use to make my GUI that you cannot use some of the other controls until this button is pressed?

  private void button1_Click(object sender, EventArgs e)
    {
      Int handle = 0;
      random(ref handle);
    }

推荐答案

    public class MyClass
    {
            private int handle;

            private void button1_Click(object sender, EventArgs e)
            {
                handle = 0;
            }

            private void button2_Click(object sender, EventArgs e)
            {
                GetHandle();
            }

            private int GetHandle()
            {
                return handle;
            }
    }

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