How to generate random numbers and letters (help)

Well I've begun working on my first VB.net program its a password genorator all it does is generates a random sequence for a password and i cant seem to figure out how to get it to generate random numbers and letters. Any help is appreciated.

 

First implment this code in your form:

Code:

    Private Function RandomNumberAsString(ByVal Min As Int32, ByVal Max As Int32) As String
        Return (New Random).Next(Min, Max).ToString
    End Function

Then when a user clicks Button1 or whatever put this code for it.

Code:

TextBox1.Text = Me.RandomNumberAsString(1000, 999999)

This will randomly generate a number between 1000 and 999999, change it as needed.

 

Code is set to the standard length of eight. Shoot me a PM if you're unable to apply.

If your not 100% with you "for loops" then look at this tutorial: http://www.youtube.com/watch?v=aM_5FWRk23c

It's fairly basic but you get the idea.