Command-Line Arguments

Command-Line Arguments

Command-line arguments are provided as an array of String objects obtained via the Environment.GetCommandLineArgs method. ^[1] An integer exit code can be returned to the operating system via the Environment.ExitCode property to indicate the overall success or failure of the program upon termination. This is useful for controlling batch scripts or other programs that execute your VB.NET program. The Environment class provides access to other useful information, such as environment strings and the current directory. This example is provided in the AccessEnvironmentInfo directory.

^[1] To establish command-line arguments within Visual Studio, right-click on the project node (not the solution node) in Solution Explorer, choose properties, and select the Debugging under Configuration Properties. Then enter the desired space-delimited command-line argument text into the command-line arguments text field. Then, when you run the program from within Visual Studio, these command-line arguments will be in effect.

Module AccessEnvironmentInfo

Public Sub Main()

Dim cmds() As String = _

Environment.GetCommandLineArgs()

Dim cmdArg As String
      For Each cmdArg In cmds
         Console.WriteLine(cmdArg)
      Next

Environment.ExitCode = 0

'0 usually means success
   End Sub
End Module