Okay, I know it's a simple question but obviously I'm just learning. I have a GridView w/5 columns. When the user selects a row I need to get a value of a column in that selected row, and it's not the primary key. I grab the PK by this code:

    Protected Sub GridView1_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs)
        TextBox1.Text = ""
        If Page.IsPostBack Then
            Dim intIndex As Integer
            intIndex = GridView1.SelectedIndex

            TextBox1.Text = "You selected " & GridView1.DataKeys(intIndex).Value.ToString()
        End If
    End Sub

Thanks for your help!
Erik