WPF UserControl events

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C#

WPF

hi all!

I have made user control (could say it is pretty much like button). My control offers typical click event and also custom press event when user has pressed my control atleast 2 seconds (in this case click event is not sent). Press event is determinated by using timer elapsed event.

The problem is that when using my control i can access my sender in click event but in press event i got error "The calling thread cannot access this object because a different thread owns it." Im confused..

Here is codesnippet from my customcontrol

//timerstarts when user presses button, after 2 seconds this will be launced.     
private void aTimer_Elapsed(object source, ElapsedEventArgs e)
{
aTimer.Stop();
OnPressEvent();           
}

//my Press event               
public event EventHandler<eventargs> PressEvent;

private void OnPressEvent()
{
     IsPressEventLaunced = true; //this flag prevents click event to be send

     // Copy to a temporary variable to be thread-safe.
     EventHandler<eventargs> temp = PressEvent;
          
   if (temp != null)
   {          
    temp(this, new EventArgs()); //The problem!! I can send 'this' BUT in client side cannnot use 'sender'
   }
}

//my click event
public event RoutedEventHandler Click;


//happens when mouse is released, sends click event unless pressevent is launched
private void myControl_PreviewMouseUp(object sender, MouseButtonEventArgs e)
{        
aTimer.Stop();
           

if (!IsPressEventLaunced)
    {
     if (null != Click)
        Click(sender, e);
    }
}</eventargs></eventargs>

And here is snippet from client side

private void button_PressEvent(object sender, EventArgs e)
        {
            myControl temp = (myControl )sender as myControl ;
            //Here I cannot use sender information
        }

        private void button_Click(object sender, RoutedEventArgs e)
        {
            myControl temp = (myControl )sender as myControl;
            //Here I can access sender information
        }

hope you got idea :)