Using a Source Stream for Bitmap Conversion

In image processing within C#, a source stream commonly refers to a stream of data that serves as the origin for reading
image information. When converting a Bitmap to other formats—such as a BitmapImage for WPF applications or a Base64
string representation—a MemoryStream often acts as this source stream.

The source stream temporarily holds the binary image data in memory, enabling smooth data transfer and conversion
without requiring disk access. By writing the bitmap data into the source stream, you can efficiently read and transform
the image into the desired target format. This approach is useful for scenarios involving UI rendering, data
serialization, or network transmission.