Best way to read commandline parameters in console

问题:

Below are two ways of reading in the commandline parameters. The first is the way that I'm accustom to seeing using the parameter in the main. The second I stumbled on when reviewing code. I noticed that the second assigns the first item in the array to the path and application but the first skips this.

Is it just preference or is the second way the better way now?

Sub Main(ByVal args() As String)
    For i As Integer = 0 To args.Length - 1
        Console.WriteLine("Arg: " & i & " is " & args(i))
    Next

    Console.ReadKey()
End Sub

Sub Main()
    Dim args() As String = System.Environment.GetCommandLineArgs()

    For i As Integer = 0 To args.Length - 1
        Console.WriteLine("Arg: " & i & " is " & args(i))
    Next

    Console.ReadKey()
End Sub

I think the same can be done in C#, so it's not necessarily a vb.net question.

回答1:

Second way is better because it can be used outside the main(), so when you refactor it's one less thing to think about.

Also I don't like the "magic" that puts the args in the method parameter for the first way.

回答2:

Do you know getopt? There is a port for C# on codeplex: http://www.codeplex.com/getopt

回答3:

The first way is better because it's simpler.

回答4:

To me the first way seems more intuitive because that is how I have been doing it since my C/C++ days.

If your commandline has one too many switches please do take a look at getopt that Thomas recommends. It's quite useful. I haven't had a look at C# port of the same though.

Regards,

kgr