Wpf – Convert ImageSource to BitmapImage – WPF

Use a CroppedBitmap.

Here is an example of its usage:

   <Page.Resources>
      <!-- Define some image resources, for use as the image element source. -->
      <BitmapImage x:Key="masterImage" UriSource="/sampleImages/gecko.jpg" />
      <CroppedBitmap x:Key="croppedImage" 
         Source="{StaticResource masterImage}" SourceRect="30 20 105 50"/>
   </Page.Resources>

An alternative method is to give a background color, and not show the image.

// XAML
<Grid Background="Black">
  <Image x:Name="imgDisplay"/>
</Grid>

// C#
imgDisplay.Source = null;
// -- OR --
imgDisplay.Visibility = Visibility.Collapsed;