Windows Runtime: How to set image in a ellipse shape button?

Answer 1

You can use Background property of the button to set image on the background.You can use it from code behind also like:

public BitmapImage LoadBackgroundImage(string fileName)
{
            var image = new BitmapImage();
            try
            {
                image.BeginInit();
                if (!string.IsNullOrEmpty(fileName) && File.Exists(fileName))
                {
                    var bytes = File.ReadAllBytes(fileName);
                    image.StreamSource = new MemoryStream(bytes);
                }
                else
                {
                    var bytes = File.ReadAllBytes(Path.GetFullPath(Properties.Resources.DefaultBackgroundImage));
                    image.StreamSource = new MemoryStream(bytes);
                }
                image.CacheOption = BitmapCacheOption.OnLoad;
                image.EndInit();
                image.Freeze();
            }
            catch (FileNotFoundException ex)
            {
                  throw ex;
            }

            return image;
        }

in your button click event add the following line

btnProfilePicture.Background=LoadBackgroundImage(yourfilename.jpg); //you can use .jpg,.jpeg,*.png