Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
I’d like to define a delegate that takes a couple of dates, an unknown number of other parameters (using the params keyword), and that returns a list of objects:
Func<DateTime, DateTime, params int[], List<object>>
Visual Studio doesn’t like the syntax which is making me think this isn’t allowed. Can anyone tell me why?
You can’t have custom attributes on a generic type argument (the CLI doesn’t permit it), and the C# compiler implements the
paramskeyword by emitting theSystem.ParamArrayAttributeon the relevant method parameter.This stops you from using it with the System.Func<…> generic delegates, but you can always create your own delegate type that does use
params.