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Editorial Team
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Asked: 2026-05-11T16:01:03+00:00

Is it somehow possible to send a function to another function for it to

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Is it somehow possible to send a function to another function for it to run.
For instance…I want to have an attribute on a field where I can specify a method that will be sent to another method where the method passed in will be run.

Not sure if that makes any sense but here’s a small example.

[ValidateIf(x=>x.test())]
public string test { get; set; }

Update:
Basically I want to use DataAnnotations for validation but sometimes depending on the system settings a field may not be mandatory…Do you have any suggestions on the direction I should head?

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1 Answer

  1. Editorial Team

    Unfortunately you can’t use delegates as properties for attributes. You’d have to specify the method name and then create the delegate using reflection at execution time – which obviously isn’t ideal in terms of finding typos at compile time.

    It might be possible in IL (specifying a MethodInfo using an equivalent to typeof) but C# doesn’t expose any way of doing this 🙁 Maybe one day we’ll get the infoof operator… quite how it would be exposed, I’m not sure. (It would be good to keep the delegate type information in the attribute.)

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