Apply shortcut keys to sliverlight page

Question

Hi.. In application requirement is as follows.. In the Silverlight child page(Usercontrol, when you click menu item )open page it requires to fill some data then for saving we have Save button for cancel it we have Cancel button. Here i am looking for Saving data i need to use ShortCut Keys(Ctrl + S). If i write the following code in KeyDown event it is not Functioning well, because Generally we punch the 'Ctrl' key in Presssed mode and then we punch the "S" key here if i punch 'Ctrl' key is not released then it is not working.. Otherwise ie. if punch "Ctrl" key then release it then punch "S" it is working fine..

//Code //int count=0;--Global--- protected override void OnKeyDown(KeyEventArgs e) { base.OnKeyDown(e);

        if (e.Key == Key.Ctrl)
        {
            count = 1;

        }
        string str = e.Key.ToString();
        if (count >0 && str == "S")
        {
            //MessageBox.Show("Saved");
            //Saving the data  
            count = 0;
        }

    }

I am looking for it works on
With "Ctrl" key is in pressed mode

please look into this...

Thanks

Answer 1

The following code appears to work ok, but it seems the event will not get fired at all unless there are input controls on the page, such as text boxes etc.

public partial class MainPage : UserControl
{
    private bool _CtrlPressed;

    public MainPage()
    {
        InitializeComponent();

        LayoutRoot.KeyDown += new KeyEventHandler(LayoutRoot_KeyDown);
        LayoutRoot.KeyUp += new KeyEventHandler(LayoutRoot_KeyUp);
    }

    void LayoutRoot_KeyDown(object sender, KeyEventArgs e)
    {
        if (e.Key == Key.Ctrl)
            _CtrlPressed = true;
    }

    void LayoutRoot_KeyUp(object sender, KeyEventArgs e)
    {
        if (e.Key == Key.Ctrl)
            _CtrlPressed = false;

        if (e.Key == Key.S && _CtrlPressed)
        {
            Debug.WriteLine("Ctrl + S was pressed");
            //Execute save operation
        }
    }
}

Answer 2

Use Keyboard.Modifiers to check Ctrl button status. Rough example:

    if (e.Key == Key.S && Keyboard.Modifiers == ModifierKeys.Ctrl)
    {
        //MessageBox.Show("Saved");
        //Saving the data  
    };