Pass Method as Parameter using C

Question

I have multiple methods, all of which have the same parameter types and return values but varied in their names and blocks. I'd like to provide the name of the method I want to run to another method, which will then call 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);
}

This code doesn't work, but it's what I'm attempting to accomplish. I'm not sure how to create the RunTheMethod code because I need to define a parameter.

Answer 1

In .NET 3.5, you can utilize the Func delegate as a parameter in your RunTheMethod method. You can use the Func delegate to define a method that takes a number of parameters of a specified type and returns a single argument of that type. Here's an example of what you should do:

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);
    }
}