textbox1.Text无法从另一个表单复制textbox2.Text值

Question

以下是我的代码

private void btnCptKb5_Click(object sender, EventArgs e)
{ 
   Form1 form1 = new Form1();
   textbox1.text = form1.textbox1.text;
}

为什么我无法复制form1文本框的值？

Answer 1

• 您没有更改Textbox2.Text值

• 您正在创建一个全新的表单实例，并尝试访问该表单的文本框值。即使您的代码有效，它也将始终为空。

• 我认为这个问题是StackOverflow中最常见的问题你可以看看这些问题，我相信你会找到一个合适的答案：

  1）How to pass values between forms in c# windows application?

  2）Passing data between forms

  3）switching between forms without loss of information

  4）windows.form c# moving between forms

  5）Communicate between two windows forms in C#

  6）How to share data between forms?

  7）Passing Data Between Forms

  8）Get data from one textbox on form1 from another textbox on form2