Question

How do I pass arguments to a public class in C#.
I am new to C#, so please forgive the n00b question.

Given this sample class:

public class DoSomething
{
    public static void  Main(System.String[] args)
    {

        System.String apple = args[0];
        System.String orange = args[1];
        System.String banana = args[2];
        System.String peach = args[3];

        // do something
    }
}

How do I pass the requested arguments?

I would expect to write something like:

DoSomething ds = new DoSomething();
ds.apple = "pie";

But this fails.

Answer 1

The String[] args parameter of the Main method is populated when you launch the application via command line:

/your/application/path/DoSomething.exe arg1 arg2 arg3 ...

If you want to pass these arguments programmatically you have to set your variables as public Properties, so for example:

public class DoSomething
{
   public string Apple { get; set; }
   public string Orange { get; set; }
   public string Banana { get; set; }
   // other fruits...
}

Then you can do:

public class Test
{
    public static void  Main(System.String[] args)
    {
        DoSomething ds = new DoSomething();
        ds.Apple = "pie";

        // do something
    }
}