-u username -p password 

to get username and password as parameters for my procedure. Can i read the input and make an '' if i fine -u put the rest of the string in the parameter username''? is this making any sens? Can someone please help, i assume that it's a very simple thing to do but I'm a begginer and I'm tring to learn please help me!

To use it for your example, you'd create a class as follows:

class MyArguments
{
    [CommandLineArgument("u")]
    public string UserName { get; set; }
    
    [CommandLineArgument("p")]
    public string Password { get; set; }
}

Then put the following code in your Main function:

public static void Main(string[] args)
{
    CommandLineParser parser = new CommandLineParser(typeof(MyArguments));
    try
    {
        MyArguments arguments = (MyArguments)parser.Parse(args);
        // Do stuff here
    }
    catch( CommandLineException ex )
    {
        Console.WriteLine(ex.Message);
        parser.WriteUsageToConsole();
    }
}