How to get the Device Resolution in Wp7

Question

I want to set some icons in my app according to device screen resolution like wxga or wvga. I saw in many links like App.Current.Host.Content.ScaleFactor or Application.Current.RootVisual.RenderSize. But I can only access App.Current.Host.Content.ActualWidth or Height. These always say as 480x800 even though I am running the app in wxga Device. How do i know the resolution correctly ?

Answer 1

Windows Phone 7 only supports one resolution(800*480). Are you asking about Windows Phone 8? Please a look at Multi-resolution apps for Windows Phone 8 . Here is the ResolutionHelper class you can use.

    public enum Resolutions { WVGA, WXGA, HD720p };

    public static class ResolutionHelper
    {
       private static bool IsWvga
       {
          get
          {
             return App.Current.Host.Content.ScaleFactor == 100;
          }
       }

       private static bool IsWxga
       {
          get 
          { 
             return App.Current.Host.Content.ScaleFactor == 160; 
          }
       }

       private static bool Is720p
       {
          get 
          { 
             return App.Current.Host.Content.ScaleFactor == 150; 
          }
       }

       public static Resolutions CurrentResolution
       {
          get
          {
             if (IsWvga) return Resolutions.WVGA;
             else if (IsWxga) return Resolutions.WXGA;
             else if (Is720p) return Resolutions.HD720p;
             else throw new InvalidOperationException("Unknown resolution");
          }
       }
    }