C＃如何对泛型类型的两个类使用一种方法？

Question

I need to merge two different print method into one. I have two generic classes and my own generic list class. Let's say I have

static void Print(string fv, MyListClass<Module> A,
            string top)
 and static void Print2(string fv, MyListClass<Student> A,
            string top)

Inside of the method is the same, but how to make them to be one method and in Main class I choose in parameters which one class list am I printing, Module either Student. My data is in:

MyListClass<Student> Stud; 
MyListClass<Module> Mod;

Answer 1

I have two generic classes and my own generic list class.

Why do you have your own list class? You generally shouldn't. Assuming it implements IEnumerable<T> :

Let both Module and Student implement a common interface with the properties you want to print, say IPrintable :

public interface IPrintable
{
    string Name { get; }
    string Description { get; }
}

public class Module : IPrintable { ... }
public class Student : IPrintable { ... }

Now create a method with a generic parameter:

void Print<T>(string fv, IEnumerable<T> A, string top)
    where T : IPrintable
{
    foreach (var item in A)
    {
        Console.WriteLine(item.Name + ": " + item.Description);
    }
}

Answer 2

为此，您只需创建一个基类，从中派生Module和Student类，然后在单个方法的签名中使用基类。