System.Drawing.Imaging.CachedBitmap public sealed class CachedBitmap : IDisposable Represents a device-dependent copy of a Bitmap matching a specified Graphics object's current device (display) settings. Avoids reformatting step when rendering, which can significantly improve performance. Documentation Code namespace System.Drawing.Imaging { public sealed class CachedBitmap : IDisposable { public CachedBitmap(Bitmap bitmap, Graphics graphics); public void Dispose(); } }