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.
To pass command line arguments, we typically define main() with two arguments : first argument is the number of command line arguments and second is list of command-line arguments.
How to Pass or Access Command-line Arguments in C#? In C#, the Main() method is an entry point of the Console, Windows, or Web application (. NET Core). It can have a string[] args parameter that can be used to retrieve the arguments passed while running the application.
To set command-line arguments in Visual Studio, right click on the project name, then go to Properties. In the Properties Pane, go to "Debugging", and in this pane is a line for "Command-line arguments." Add the values you would like to use on this line. They will be passed to the program via the argv array.
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.
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