Compiler Error CS1688
Visual Studio 2008
Cannot convert anonymous method block without a parameter list to delegate type 'delegate' because it has one or more out parameters
The compiler allows parameters to be omitted from an anonymous method block in most cases. This error arises when the anonymous method block does not have a parameter list, but the delegate has an out parameter. The compiler does not allow this situation because it would need to ignore the presence of the out parameter, which is unlikely to be the correct behavior.