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Tip of the Day
Language: VB7
Expertise: Intermediate
Jun 22, 2002



Application Security Testing: An Integral Part of DevOps

Duplicate the SET operating system command

The Environment.GetEnvironmentVariables property returns the list of all the environment variables, as an IDictionary object. If you want to display them sorted by their name, as the SET command does at the prompt, you need the following tricky code:

' Get all the variables, as an IDictionary object
Dim vars As IDictionary = Environment.GetEnvironmentVariables
' moves all the keys into an array
Dim keys(vars.Count - 1) As Object
vars.Keys.CopyTo(keys, 0)

' sort the Keys array

' display all environment variables, sorted by keys
Dim key As String
For Each key In keys
    Console.WriteLine("{0}={1}", key, vars(key))
Francesco Balena
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