How to play a video file in windows phone.

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C#

Mobile

XAML

video

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Hi ,
I have a windows pone application i need to play a video file which is included in the project (".WMV ") i am using following code.
added
using System.Windows.Media;
using Microsoft.Phone.Tasks;
I couldn't able to play the video.. i am not even getting any errors or debug errors

<MediaElement x:Name="Butterfly"
              Margin="0,10,0,86"
              Source="/Vid/WP_20150513_wmvFILE.wmv"
              Stretch="Fill" AutoPlay="True" Volume="1"/>

C# code

private void Button_Tap(object sender, System.Windows.Input.GestureEventArgs e)
{
    Butterfly.Play();
}