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c#reflectionanonymous-methods

How to identify anonymous methods in System.Reflection

How can you identify anonymous methods via reflection?

Solution

  • Look at the attributes of the method, and see if the method is decorated with CompilerGeneratedAttribute.

    Anonymous methods (as well as other objects, such as auto-implemented properties, etc) will have this attribute added.

    For example, suppose you have a type for your class. The anonymous methods will be in:

    Type myClassType = typeof(MyClass);
IEnumerable<MethodInfo> anonymousMethods = myClassType
    .GetMethods(
          BindingFlags.NonPublic
        | BindingFlags.Public 
        | BindingFlags.Instance 
        | BindingFlags.Static)
    .Where(method => 
          method.GetCustomAttributes(typeof(CompilerGeneratedAttribute)).Any());

    This should return any anonymous methods defined on MyClass.