单击按钮更改标签文本 [英] changing label text with button click

问题描述

我需要在按钮单击时更改标签的文本，但它不起作用并给我运行时错误.我为LABEL有一个单独的类，为BUTTON有一个单独的类.这是伪代码.真实的代码包含位置标签和按钮的大小.一切都是动态创建的.谢谢！

I need to change the text of label on the button click, but it's not working and giving me run time error.I've got separate class for LABEL and separate for BUTTON.This is dummy code.the real code contains locations and sizes for both label and button.Everything is created dynamically. Thanks!

   /-------------------------------------LABEL class-------------------------------/
   private Label label1;

   public Label getLabel1()
   {
       return label1;
   }

   public LABEL()
   {
       label1 = new Label();
   }

    public void print()
    {            
        label1.Text = "x";
        Controls.Add(label1);
    }//

  /-------------------------------------BUTTON class----------------------------------/
    private Button button1;

    public BUTTON()
    {

    }

    public void print()
    {
        button1 = new Button();
        button1.Click +=new EventHandler(button1_Click);
        Controls.Add(button1);
    }

     public void button1_Click(object sender, EventArgs e)
     {
        LABEL label = new LABEL();
        label.getLabel1().Text = "y";
     }

推荐答案

您可以简单地尝试一下.

You can simply try it.

private void button1_Click(object sender, EventArgs e){label1.Text = "Hi";label1.Refresh();}

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