[Xamarin, Android] Get Bitmap from filename

getBitmap.cs

string imagefileName = "testimage.jpg";
// Remove the file extention from the image filename
imagefileName = imagefileName.Replace(".jpg","").Replace(".png","");

// Retrieving the local Resource ID from the name
int id = (int)typeof(Resource.Drawable).GetField(imagefileName).GetValue(null);

// Converting Drawable Resource to Bitmap
var myImage = BitmapFactory.DecodeResource(Forms.Context.Resources, id);