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Note

In a similar vein,

contravariance

allows you to create a single delegate that can point to numerous

methods that receive objects related by classical inheritance. Consult the .NET Framework 3.5 SDK documentation

for further details.

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Source Code

The DelegateCovariance project is located under the Chapter 11 subdirectory.

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Creating Generic Delegates

Recall from the previous chapter that C# does allow you to define generic delegate types. For exam-

ple, assume you wish to define a delegate that can call any method returning void and receiving a

single argument. If the argument in question may differ, you could model this using a type para-

meter. To illustrate, consider the following code within a new Console Application named

GenericDelegate:

namespace GenericDelegate

{