CK editor in C# windows forms

Hi All,
Currently I have integrated Ckeditor in Html page of my windows form application.I have called the Html page using navigate method to fire webBrowser document like this:

 string Currentpath = Directory.GetCurrentDirectory();
            webBrowser1.Navigate(Path.Combine(Currentpath, "CkEditorIntegration.html"));

This will reflect browser control of my windows form.The integration works fine but i'm facing some issues like

1.None of the Keyboard strokes like CTRL+C ,CTRL+V, CTRL+X, CTRL+Y are working!
(i meant all the key strokes).

2.Delete key press does not delete the content on CkEditor.

3.On press of backspace key,The non editable content is getting removed.

Concern: I tried with a Web application.Everything works fine there without any issues.But the only issue is with the windows forms.

Any help is really appreciated !! Thanks in advance.

What I have tried:

Succesfully integrated in a c# Web Application.Everything works fine ,But facing these issues only with Windows forms.