使用 C# 将方法作为参数传递 [英] Pass Method as Parameter using C#

问题描述

我有几个方法都具有相同的参数类型和返回值，但名称和块不同.我想将要运行的方法的名称传递给另一个将调用传递的方法的方法.

I have several methods all with the same parameter types and return values but different names and blocks. I want to pass the name of the method to run to another method that will invoke the passed method.

public int Method1(string)
{
    // Do something
    return myInt;
}

public int Method2(string)
{
    // Do something different
    return myInt;
}

public bool RunTheMethod([Method Name passed in here] myMethodName)
{
    // Do stuff
    int i = myMethodName("My String");
    // Do more stuff
    return true;
}

public bool Test()
{
    return RunTheMethod(Method1);
}

此代码不起作用，但这就是我想要做的.我不明白的是RunTheMethod代码怎么写，因为我需要定义参数.

This code does not work but this is what I am trying to do. What I don't understand is how to write the RunTheMethod code since I need to define the parameter.

推荐答案

您可以使用 .net 3.5 中的 Func 委托作为 RunTheMethod 方法中的参数.Func 委托允许您指定一个方法，该方法采用特定类型的多个参数并返回特定类型的单个参数.这是一个应该有效的示例:

You can use the Func delegate in .net 3.5 as the parameter in your RunTheMethod method. The Func delegate allows you to specify a method that takes a number of parameters of a specific type and returns a single argument of a specific type. Here is an example that should work:

public class Class1
{
    public int Method1(string input)
    {
        //... do something
        return 0;
    }

    public int Method2(string input)
    {
        //... do something different
        return 1;
    }

    public bool RunTheMethod(Func<string, int> myMethodName)
    {
        //... do stuff
        int i = myMethodName("My String");
        //... do more stuff
        return true;
    }

    public bool Test()
    {
        return RunTheMethod(Method1);
    }
}

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