How to detect multiple keys down onkeydown event in wpf?

Question

I don\'t want to detect any double key combination, so solutions like

if(Keyboard.IsKeyDown(specificKey)){

}

won\'t work, unless of cours

Answer 1

Refactored your code: XAML:

code-behind:

List _pressedKeys = new List();


private void TextBox_KeyDown(object sender, KeyEventArgs e)
{
    if (_pressedKeys.Contains(e.Key))
        return;
    _pressedKeys.Add(e.Key);


    PrintKeys();
    e.Handled = true;
}

private void TextBox_KeyUp(object sender, KeyEventArgs e)
{
    _pressedKeys.Remove(e.Key);
    PrintKeys();
    e.Handled = true;

}

private void PrintKeys()
{
    StringBuilder b = new StringBuilder();

    b.Append("Combination: ");
    foreach (Key key in _pressedKeys)
    {
        b.Append(key.ToString());
        b.Append("+");
    }
    b.Length--;
    Console.WriteLine(b.ToString());
}

private void TextBox_LostFocus(object sender, RoutedEventArgs e)
{
    _pressedKeys.Clear();
}