Windows Phone study note 4

Set Application Program Background image:

 Private void Image1_mouseleftbuttondown ( Object Sender, Mousebuttoneventargs E) {setappbackground ( "/Changebackground; component/images/lighthouse.png" );} Private Static void Setappbackground ( String Imagename ){ VaR APP = Application . Current As  App ; If (APP = Null ) Return ; VaR Imagebrush = New  Imagebrush {Imagesource = New  Bitmapimage ( New  Uri (Imagename, Urikind . Relative)}; app. rootframe. Background = imagebrush ;} Private void Image2_mouseleftbuttondown ( Object Sender, Mousebuttoneventargs E) {setappbackground ( "/Changebackground; component/images/tulips.jpg" );}