If you are trying to encapsulate a method that returns a value, Funcs are ideal. However, what if your method returns void?  Func will not work (Funcs were designed to wrap methods with return values only). However, a similar construct, called Action does just this – encapsulate a method without a return value. See usage of these two delegates below:

// Use Func only if the method that you are encapsulating returns a value
Func<int, string> myFunc = (x) => String.Format("The int is {0}", x);
myFunc.Invoke(4);

// No returned value? Use Action instead
Action<string> voidReturnType = (x) => Console.WriteLine(x);

Anuj holds professional certifications in Google Cloud, AWS as well as certifications in Docker and App Performance Tools such as New Relic. He specializes in Cloud Security, Data Encryption and Container Technologies.

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