Full Name:
CS0266

Short Name:
CS0266

Type of Entity:
C#

Abstract:
This error occurs if you have code that attempts to convert two types that cannot be implicitly converted, such as in an assignment of a base type to a derived type that is missing an explicit cast. For more information, see.Conversion Operators (C# Programming Guide).

MSDN Source URL:
http://msdn2.microsoft.com/5z8wb9e4.aspx