Question

I am curious. If I am using a combination of streamreader and streamwriter is there a way that I can have a stream written only if File X has been modified?

This code may not be constructed in the best way. It is attached to help in getting my questions accross.

sCommand = "whoami.exe >> C:\Desktop\Test.txt"

Using swrr As New StreamWriter(File.Open(ErrorLog, FileMode.OpenOrCreate))
            For Each strUserName As String In strLines
                Shell("cmd.exe /c" & sCommand, AppWinStyle.Hide, True, )
                'command Cannot Execute, List Why and Move onto Next Command
                Using sr As New StreamReader(File.Open(Test.txt, FileMode.OpenOrCreate))
                    If '''??File has been modifed??''''' Then swrr.WriteLine("PASS") Else swrr.WriteLine("FAIL")
                End Using
            Next
  End Using

Answer 1

You can call File.ReadAllText(path) to get a string containing the text.

You can then compare the new string to the old one.

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The correct way to read the output of a command is to use the Process class with RedirectStandardOutput.
You can then create a StreamReader around StandardOutput and call ReadToEnd().