C# textbox keydown triggered twice in metro applications

Question

Hi

I m working on C# and XAML for metro applications. I have a textbox and I want that once enter is pressed in that textbox a new textbox appears. But instead of just one textbox, I m getting two textboxes. I did debugging also n realized that its triggerd twice. Not able to figure out why it is triggerd twice.

here is some code of my application

private void TextBox_KeyDown_1(object sender, Windows.UI.Xaml.Input.KeyRoutedEventArgs e)
        {
            if (e.Key == Windows.System.VirtualKey.Enter)
            {
              //code for producing textbox
            }
            
        }

when i m debugging, once the above block is executed, it going to LayoutAwarePage.cs
and the control is sent to ths code snippet

 private void CoreDispatcher_AcceleratorKeyActivated(CoreDispatcher sender,
            AcceleratorKeyEventArgs args)
        {
            var virtualKey = args.VirtualKey;

           if ((args.EventType == CoreAcceleratorKeyEventType.SystemKeyDown ||
                args.EventType == CoreAcceleratorKeyEventType.KeyDown) &&
                (virtualKey == VirtualKey.Left || virtualKey == VirtualKey.Right ||
                (int)virtualKey == 166 || (int)virtualKey == 167))
            {
                var coreWindow = Window.Current.CoreWindow;
                var downState = CoreVirtualKeyStates.Down;
                bool menuKey = (coreWindow.GetKeyState(VirtualKey.Menu) & downState) == downState;
                bool controlKey = (coreWindow.GetKeyState(VirtualKey.Control) & downState) == downState;
                bool shiftKey = (coreWindow.GetKeyState(VirtualKey.Shift) & downState) == downState;
                bool noModifiers = !menuKey && !controlKey && !shiftKey;
                bool onlyAlt = menuKey && !controlKey && !shiftKey;

                if (((int)virtualKey == 166 && noModifiers) ||
                    (virtualKey == VirtualKey.Left && onlyAlt))
                {
                    // When the previous key or Alt+Left are pressed navigate back
                    args.Handled = true;
                    this.GoBack(this, new RoutedEventArgs());
                }
                else if (((int)virtualKey == 167 && noModifiers) ||
                    (virtualKey == VirtualKey.Right && onlyAlt))
                {
                    // When the next key or Alt+Right are pressed navigate forward
                    args.Handled = true;
                    this.GoForward(this, new RoutedEventArgs());
                }
            }
        }  



once ths code block is done, the control is sent back to the function TextBox_KeyDown_1. I m nt able to understand why on the first place control is sent to layoutawarepage.cs . This code was generated when i added SplitPage in my project.