MessageBox.Show not working at all

Question

I am developing an app for Windows Phone 8 with C#

And I've been working alot with MessageBox.Show() , and All the time it used to show a PopUp message like i wanted , but then suddenly , it Won't show anything , I debugged the app , the code runs normally and compiles the Line MessageBox.Show("Something"); but it doesn't pop up !

I also tried to put it in another page , doesn't work too ! All i remember that yesterday I have messed with References of the Project But is that the problem ?

Anyways here's a photo of the references of my Project

Answer 1

When you build a Windows Phone Project it automatically generates all the required dependencies for you. You should be able to in your class file and add the following using statement:

using System.Windows

Once you've done that you'll be able to implement the MessageBox class. If not, then you'll need to do the following:

1. Open Solution Explorer
2. Right Click Reference Folder
3. Add Reference
4. Go to Assemblies
5. Go to Browse
6. Navigate to: C:\Windows\Microsoft.Net\Assembly\GAC_MSIL\PresentationFramework
7. Reference PresentationFramework.dll

Once you've referenced that library, you'll be able to call: MessageBox.Show(@"Something"); without a single hiccup.

Answer 2

Solved!

1.) Restarted my computer

2.) Deleted the app from the phone

3.) Debug