Need help filling grid form .csv file

[DougP]

when I run this it only shows the last row in the file. so it loops through the whole file and only puts the last row in. I know I need something to load the rows into and then pass that to the grid?
Can someone give me a hand with this?

        Dim Filename As String = Session("SPMIDTextFile")
        Dim SPMIData As String
        SPMIData = GetFileContents(Filename)
        Dim strReader As New StringReader(SPMIData)
        Dim SPMIDCostrakrArray As Array
        Dim SPMIDCostrakrString As String = ""
        Dim SPMID As String = ""
        Dim Costrakr As String = ""
        Do While strReader.Peek() >= 0
             SPMIDCostrakrString = strReader.ReadLine()
            SPMIDCostrakrArray = SPMIDCostrakrString.Split(",")
            SPMID = SPMIDCostrakrArray(0)
            Costrakr = SPMIDCostrakrArray(1)
        Loop
        GridView1.DataSource = SPMIDCostrakrArray
        GridView1.DataBind()

DougP