从动态创建的按钮数组中识别单击的按钮 [英] identify a clicked button from a dynamically created button array

问题描述

当将这些按钮创建为动态按钮数组时，如何确定它们是否被单击?

问题
列中有一组按钮，这些按钮是通过for循环(动态)创建的.
单击列的第二个按钮.如何识别用户是否单击了第二个按钮?

how can we identify a button whether it is clicked or not,when those buttons are created as dynamic button array?

Question
there are set of buttons in a column which are created from a for loop(dynamically).
2nd button of the column is clicked.how can we identify that the user has clicked the 2nd button?

{
 x = 30;
 for (int i = 0; i < ar.Length; i++)
 {
     bu[index1] = new Button();
     bu[index1].Location = new Point(50, x);
     bu[index1].Size = new Size(75, 20);
     bu[index1].Text = "1";
     bu[index1].Name = b+ i;
     bu[index1].Click += new EventHandler(button_Click1);
     x = x + 100;
     index1++;
 }
 this.Controls.AddRange(bu);
}

private void button_Click1(object sender, EventArgs e)
{
     if(bu[0].Name=="b0")
     MessageBox.Show("selected rw1");
     else if(bu[1].Name=="b1")
     MessageBox.Show("selected rw2";

}

上面的代码无法正常运行，如Question.中所述.有没有人可以帮我解决这个问题?

above code is not working expected as explained in the Question.can any one help me to correct this??

推荐答案

您有sender参数可用，请使用它.例如:

You have the sender argument available, use it. For instance:

private void button_Click1(object sender, EventArgs e)
{
  Button selected = sender as Button;
  MessageBox( selected.Name);
}

bu[index1].Name = "b" + i;
不要忘记引号！ (不过，除非您碰巧有一个名为b的字符串或数字变量存在，否则您的编译器应该会发现该错误.)
在处理程序中，您需要检查实际单击的按钮的名称((Button)sender).如果bu是全局数组，则还可以在处理程序中的bu中查找发件人，以发现被单击的按钮的索引.

bu[index1].Name = "b" + i;
Don''t forget the quotes! (Your compiler should be picking that mistake up though unless you happen to have a string or numeric variable called b lying around.)

In the handler you need to be checking the name of the button that was actually clicked ((Button)sender). If bu is a global array you could also look for sender in bu in the handler to discover the index of the button that was clicked.

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