如何将一个特定控件作为事件的发件人？ [英] How to make one particular control as Sender of a event?

问题描述

private void EnterPressed( object sender, KeyEventArgs e )
        {
            if ( e.KeyCode == Keys.Enter )
            {
                if ( this.SignButton.Enabled == true &&
                   ( sender is TextBox )
                   )
                {
                    this.SignButton_Click( sender, e );
                } // if
            } // if
        }

我的表单包含许多TextBox控件，如何区分发件人。



如果我传递一个特定的文本框名称，它会抛出错误为是一个字段但是用作类型

My Form consists of many TextBox Controls, how it will distinguish between the sender.

If i pass a particular textbox name, it is throwing error as "Is a field but used as type"

推荐答案

你需要做的就是将发送者对象类型转换为TextBox控件并检查是否为控件ID。这样的东西..

All you need to do here is to type cast the sender object to a TextBox Control and check to see is the control Id. Something like this..

TextBox ctrl = (TextBox) sender;

if (ctrl != null)
{
// Do something
// Check for condition based on control Id
if (ctrl.Id.equals("txt1"))
{
  //do some thing
}
else if (ctrl.Id.equals("txt2")
{
 //  do something else..
}
}

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