Question

I am making a calculator using WPF Application in MS Visual Studio 2010. I have made different buttons that are in a standard calculator and I have added button_Click methods on them. Now I also want to perform the same tasks as the button_Click method is performing by stroking the specific key.

For Example

I have “addButton_Click” method and it performs this:

    private void addButton_Click(object sender, RoutedEventArgs e)
    {
        _op = 1;    
        temp = displayPannel.Text;
        check = true;
    }

Now What If I wanted the “+” key to do the same thing in the calculator instead of using the mouse to click on “+” button. Also I want to use the numeric keys as well along with the mouse clicking. How can I do it?

Answer 1

MainWindow.xaml.cs

  private void TextBox_PreviewKeyUp_1(object sender, KeyEventArgs e)
    {
        if (e.Key == Key.OemPlus || e.Key == Key.Add)
            MessageBox.Show("Tada");
    }

MainWindow.xaml

    <TextBox Text="Hello" PreviewKeyUp="TextBox_PreviewKeyUp_1"/>