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C#

Delegate compatibility


A method or delegate M is compatible with a delegate type D if all of the following are true:

  • D and M have the same number of parameters, and each parameter in D has the same ref or out modifiers as the corresponding parameter in M.

  • For each value parameter (a parameter with no ref or out modifier), an identity conversion or implicit reference conversion exists from the parameter type in D to the corresponding parameter type in M.

  • For each ref or out parameter, the parameter type in D is the same as the parameter type in M.

  • An identity or implicit reference conversion exists from the return type of M to the return type of D.



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