How do I create Wrapper class for Message Box?

Question

I want to create Wrapper class for Message Box class in my project. I am using Telerik Testing FrameWork. In that message box was not recognized in unit testing thats y i want to create wrapper class, for creating the
instance for that mesage box.

Answer 1

A wrapper class is simply a class that for example wraps another object or a subset of its methods. You could just create a class that exposes the same methods as the MessageBox and uses the MessageBox internally.
If you define an interface and program against this in your application, you could replace your wrapper object with another object that implements the same interface when you are doing the unit tests. Something like this:
public interface IMessageBoxWrapper
System.Windows.Forms.DialogResult Show(string text, string caption);
public class MessageBoxWrapper
public System.Windows.Forms.DialogResult Show(string text, string caption)
return System.Windows.Forms.MessageBox.Show(text, caption);
public class MockMessageBoxWrapper
public System.Windows.Forms.DialogResult Show(string text, string caption)
return System.Windows.Forms.DialogResult.OK;
private readonly IMessageBoxWrapper _mbw;
public Form1(IMessageBoxWrapper mbw)
InitializeComponent();
_mbw = mbw;
private void SomeMethod()
_mbw.Show("...", "...");
Hope that helps.
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