在变量中引用函数? [英] Referencing a function in a variable?

问题描述

说我有一个功能.我希望在变量中添加对此功能的引用.

Say I have a function. I wish to add a reference to this function in a variable.

因此，我可以从变量"bar"中调用函数"foo(bool foobar)"，就好像它是一个函数一样.例如. 'bar(foobar)'.

So I could call the function 'foo(bool foobar)' from a variable 'bar', as if it was a function. EG. 'bar(foobar)'.

如何?

推荐答案

听起来您想将Func保存到变量中以备后用.在此处:

It sounds like you want to save a Func to a variable for later use. Take a look at the examples here:

using System;

public class GenericFunc
{
   public static void Main()
   {
      // Instantiate delegate to reference UppercaseString method
      Func<string, string> convertMethod = UppercaseString;
      string name = "Dakota";
      // Use delegate instance to call UppercaseString method
      Console.WriteLine(convertMethod(name));
   }

   private static string UppercaseString(string inputString)
   {
      return inputString.ToUpper();
   }
}

查看方法UppercaseString如何保存到名为convertMethod的变量，然后可以在以后调用该变量:convertMethod(name).

See how the method UppercaseString is saved to a variable called convertMethod which can then later be called: convertMethod(name).

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