获取事件的控件名称

Getting control name for an event(获取事件的控件名称)

问题描述

在我的 C# Windows 窗体表单中，我有一些动态生成的按钮.我在点击事件上分配了以下方法.是否可以获取触发事件的按钮名称?

In my C# Windows Forms form I have some buttons which are dynamically generated. I assigned the following method on the click event. Is it possible to get the name of the button from which the event is triggered?

private void btnBrowsDoc_Click(object sender, EventArgs e)
{
    try
    {
        if (openFileDialog1.ShowDialog().Equals(DialogResult.OK))
        {
            gbxDocument.Controls["txtDocument" + count].Text =
                openFileDialog1.FileName;
        }
        else
        {
            return;
        }
    }
    catch (Exception ex)
    {
        //handle the exception
    }
}

推荐答案

您可以使用 sender 参数.那就是引发点击事件的控件(本例中的按钮):

You can use the sender argument. That is the Control (the button in this case) that has raised the click event:

var button = (Button)sender;
button.Name ...

注意:如果您已将其他控件(例如面板等)订阅到同一事件处理程序，您可以使用 as 操作符检查发送者是否为按钮:

N.B.: In case you have subscribed other controls (e.g. panels, etc.) to the same event handler, you can check if the sender is a button using the asoperator:

var button = sender as Button;
if (button != null)
{
    button.Name ...
    ...
}

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