按鈕不包含定義ID

Question

這是我的Form1.cs文件。該方法應該顯示一個MessageBox點擊按鈕的ID，但我得到這個錯誤。

private void button_Click(object sender, EventArgs e) 
     { 

      Button button = sender as Button; 
      string buttonId = button.ID; 
      MessageBox.Show(buttonId); 
     } 

錯誤：

'Button' does not contain a definition for 'ID' and no extension method 'ID' accepting a first argument of type 'Button' could be found (are you missing a using directive or an assembly reference?)

Answer 1

如果這是一個Windows窗體應用程序，則建於Button控件沒有一個叫ID屬性。您可能想要獲取Name屬性，該屬性對於每個按鈕控件都是唯一的。

一個簡單的例子：

private void button_Click(object sender, EventArgs e) 
{ 
    Button button = sender as Button; 
    string buttonName = button.Name; //Button does not have an ID - use Name instead 
    MessageBox.Show(buttonName); 
}