c＃从form2添加标签 [英] c# add label from form2

问题描述

Form2代码：

  public void button2_Click（object sender，EventArgs e）
 {
 Form1 form1form = new Form1（）; 
标签asd =新标签（）; 
 asd.Text =asdasasdasdasd; 
 form1form.Controls.Add（asd）; 
 
 Form2 form2form = new Form2（）; 
 form2form.close（）; 
 
 
 $ / code> 

我想从form2在form1上添加新的标签和按钮



它是如何制作的？



谢谢


解决方案

如果您想从 form2form 访问 form1form ，则必须公开引用 form1form 。在 form1form 中声明属性如下：



  public static form1form Instance {get ;私人设置; } 
  

然后在<$ c中设置实例 $ c $> $ form1form ：

  private void form1form_Load（object sender，EventArgs e）
 {
 Instance = this; 
 
  

在 form2form 中：



  public void button2_Click（object sender，EventArgs e）
 {
 Label asd = new Label（） ; 
 asd.Text =asdasasdasdasd; 
 form1form.Instance.Controls.Add（asd）; 
} 
  




Form2 code:

public void button2_Click(object sender, EventArgs e)
        {   
          Form1 form1form = new Form1();
            Label asd = new Label();
            asd.Text = "asdasasdasdasd";
            form1form.Controls.Add(asd);

            Form2 form2form = new Form2();
             form2form.close();

}

I want to add new label and button on form1 from form2

how it made ?

thanks

解决方案

If you want to access form1form from form2form you must have public reference to form1form. Declare property in form1form like below:

public static form1form Instance { get; private set; }

Then set Instance in Load event of form1form:

private void form1form_Load(object sender, EventArgs e)
{
   Instance = this;
}

In form2form:

public void button2_Click(object sender, EventArgs e)
{
    Label asd = new Label();
    asd.Text = "asdasasdasdasd";
    form1form.Instance.Controls.Add(asd);
}

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