How to include a class file using c#

Question

OK, let me preface this by saying I'm not coding in visual studio. I'm doing this in down time at work, and don't have that option. I'm coding in Notepad ++ portable and compiling with the windows built in c# compiler.

That said, I have this class in useful.cs

using System;

public class Useful

{   
    public void GetInt()
        {
            string s = Console.ReadLine();
            int i = Convert.ToInt32(s);
            return i;
        }
}

Now I also have a main project file, let's call it project.cs. How do I call useful.cs in that file so I can just type like int a = Useful.GetInt(); and have it work?

you should use a Namespace to encapsulate your Useful class and then import this Namespace in your project.cs to access the Useful class and its functions. — Mainak
– Mainak, Commented Jan 19, 2016 at 6:39

Dr. Stitch · Accepted Answer · 2016-01-19 04:37:38Z

2

You should set GetInt as a static method.

public static int GetInt()
{
    string s = Console.ReadLine();
    int i = Convert.ToInt32(s);
    return i;
}

edited Jan 19, 2016 at 4:37

answered Jan 19, 2016 at 4:32

Dr. Stitch

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4 Comments

jacob Over a year ago

Although this does match their example, it does not answer their question.

Andrew Savinykh Over a year ago

This is wrong. You cannot return a value from a method that has void as the return type in its signature. Don't just copy from question, ensure that your answer actually works ;)

Dan Seminara Over a year ago

Thanks, I actually just copied the class from another program I did where it was in the only .cs file, but I forgot to change the void to int.

Andrew Savinykh Over a year ago

Now, that's much better!

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