How to call a function from a VC# class provided in a library?

If you want to call a function from a VC# class provided in a library, you can follow this tutorial:

1. Reference the shared function with the class name prefix:

    MyLib.PrintHello();

2. See the following full source code example, MyLibApp.cs:

// MyLibApp.cs
// Copyright (c) FYIcenter.com

using fyi;
namespace fyi {
    public class MyLibApp {
        static void Main(string[] args) {
            MyLib.PrintHello();
        }
    }
}

3. Compile the code with the "csc /reference" command:

\fyicenter>csc /reference:MyLib.dll MyLibApp.cs
Microsoft (R) Visual C# Compiler version 2.2.0.61624
Copyright (C) Microsoft Corporation. All rights reserved.

>dir MyLibApp.*
09:23 AM               203 MyLibApp.cs
09:23 AM             3,584 MyLibApp.exe

4. Run the executable code:

C:\fyicenter>MyLibApp.exe
Hello world! - From MyLib

⇒First Visual C# Program in Visual Studio 2017

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