一个单击事件，包含多个按钮

Question

I have a WPF Window with many buttons (btn_1, btn_2, btn_3 ... btn_81) and instead to create a click-event for each button like this:

private void btn_1_Click(object sender, RoutedEventArgs e)
{
    if (backColor != null)
        btn_1.Background = backColor;
}

private void btn_2_Click(object sender, RoutedEventArgs e)
{
    if (backColor != null)
        btn_2.Background = backColor;
}

I meant to create only one click-event and get somehow the name of the button I clicked to perform the action. The action performed with the click-event is for each button the same: they must change their background.

I hope I could explain my issue. TIA!

Answer 1

In your XAML you can bind the buttons click events to the same handler:

    <StackPanel>
        <Button Content="btn1" x:Name="btn1" Click="btn_Click"></Button>
        <Button Content="btn2" x:Name="btn2" Click="btn_Click"></Button>
        <Button Content="btn3" x:Name="btn3" Click="btn_Click"></Button>
    </StackPanel>

And the code behind:

    Brush backColor = new SolidColorBrush(Colors.Red);

    private void btn_Click(object sender, RoutedEventArgs e)
    {
        Button btn = sender as Button;

        if (btn != null && backColor != null)
            btn.Background = backColor;
    }

Answer 2

Just add same event to each button. In your case add btn_1_Click . You can do that like:

btn1.Click += btn1_Click;
btn2.Click += btn1_Click;
btn3.Click += btn1_Click;
...

or

btn1.Click += new EventHandler(btn1_Click);
btn2.Click += new EventHandler(btn1_Click);
btn3.Click += new EventHandler(btn1_Click);
...


private void btn1_Click(object sender, RoutedEventArgs e)
{
    // do something
}

Answer 3

you can do

   private void ButtonBase_OnClick(object sender, RoutedEventArgs e)
    {
        if (Equals(sender, bt1))
        {

        }
        else if(Equals(sender, bt2))
        {

        }
    }

xaml

<Button Content="Button 1" Name="bt1" Click="ButtonBase_OnClick"/>
<Button Content="Button 2" Name="bt2" Click="ButtonBase_OnClick"/>