将多个参数作为命令行参数传递

Question

I am calling one .NET app from another using Process.Start and passing in a bunch of strings as command line arguments:

startInfo.Arguments = String.Join("""  """, MyArray)
Dim p As Process = Process.Start(startInfo)

My intent is to pass in something like:

"first value" "second value" "third value"

and retrieve from within the second app:

Sub Main(ByVal args() as String)
    If args.Length > 0 Then

    End If
    ...
End Sub

Unfortunately args.Length only returns 1 - all the values I pass get passed on as a single value: "first value second value third value"

I tried wrapping each in double quotes in the first app but does not seem to help. I know I can just retrieve args(0) and then split it into an array of values but I do not want to do that. Also somehow it worked for me before, even without double quotes. So I am trying to figure out what happened and how can I make it pass my strings as multiple values instead of 1.

Answer 1

Your String.Join is not going to give you what you want. It will not put the double quote at the start and end of the string.

startInfo.Arguments = """" + String.Join(""" """, MyArray) + """"