Set Title of a MessageDialog
Set Title of a MessageDialog in a Windows Store app
using Windows.UI.Popups;
The Content property represents the text message to be displayed. The following code snippet sets and gets the content of a message dialog.
messageDialog.Content = "Hello Windows Store App.";
string message = messageDialog.Content;
The Title property of represents the title of the dialog and appears in the title bar. The following code snippet sets and gets the title of a message dialog.
messageDialog.Title = "Hello Windows";
string title = messageDialog.Title;
Here is complete sample code >>