Code example for plink.exe redirect of results

I am hoping somebody could provide a code example of how plink.exe can be used to log into a linux server, run a few commands and direct all of the ouput to a textbox within VB.net 2010.

I know the command line to get the connection....

       Dim Unix_User_Name As String = "XXX"
        Dim Unix_User_Password As String = "XXX"
        Dim NDS_Start_SIT_Putty_Command_Value As String = "C:\plink.exe " + Unix_User_Name + "@spongeshrimp.grhq.XXX.com -pw " + Unix_User_Password

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But then what I want to do is a....

ls -la

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And then capture all the reults of that command in a textbox.  I know this is done through streamreading however I am not that up on how this is acomplished.  I just need a code example.

Thank you.