Color.ToKnownColor Method ()
Assembly: System.Drawing (in System.Drawing.dll)
A predefined color is also called a known color and is represented by an element of the KnownColor enumeration. When the method is applied to a Color structure that is created by using the FromArgb method, returns 0, even if the ARGB value matches the ARGB value of a predefined color. also returns 0 when it is applied to a Color structure that is created by using the FromName method with a string name that is not valid.
Available since 1.1