Question

我正在处理Windows窗体，我正在“添加更多”按钮创建文本框，所以我想获取每个文本框的文本更改事件的值。

这是我的代码：

 private void button1_Click(object sender, EventArgs e)
 {
   // I created text box wc
   TextBox wc = new TextBox();

   // now bind it with textchanged event
   wc.TextChanged += wc_TextChanged;
  }
    void wc_TextChanged(object sender, EventArgs e)
    {
        var box = (TextBox)sender;
        label1.Text = box.Text;

    }

我试过这个，但是在每个盒子的文本更改中都没有被解雇，

由于

Answer 1

您还需要将其添加到form：

// I created text box wc
TextBox wc = new TextBox();

// now bind it with textchanged event
wc.TextChanged += wc_TextChanged;

this.Controls.Add(wc);

Answer 2

您应该添加事件和文本框

private TextBox wc;
Form()
{
     InitializeComponent();
     wc = new TextBox();
     wc.TextChanged += wc_TextChanged;
     wc.Visible = false;
     Controls.Add(wc);
}
private void button1_Click(object sender, EventArgs e)
{
     wc.Visible = true;
}

应始终添加控件，您应该只控制控件的可见性！

Answer 3

它的工作正常我

    private void button1_Click(object sender, EventArgs e)
    {
        TextBox wc = new TextBox();

        this.Controls.Add(wc);

        wc.TextChanged+=wc_TextChanged;

    }

    void wc_TextChanged(object sender, EventArgs e)
    {
        //var box = (TextBox)sender;
        MessageBox.Show("TEXT CHANGED");

    }

C＃winform动态创建的文本框事件（textChanged）未被触发

3 个答案: