XML and Datagridview

[Quay]

Hello, I hope someone can give me some help.
I have a datagridview (Unbound), wich calculate several numbers, and I use this following code to save 5 of the columns to a XML file.

My problem is that I would like to load this file back to my datagridview, and onlu to the same columns, without changing the rest of the datagridview.

Code used to create XML file:

        Dim gridtable As DataTable = New DataTable("WaypointLeg")
        Dim gridtable_collumn1 As DataColumn = New DataColumn("column1")
        Dim gridtable_collumn11 As DataColumn = New DataColumn("column11")
        Dim gridtable_collumn18 As DataColumn = New DataColumn("column18")
        Dim gridtable_collumn19 As DataColumn = New DataColumn("column19")
        Dim gridtable_collumn20 As DataColumn = New DataColumn("column20")
        Dim name As String
        name = IDTextBox.Text
        gridtable.Columns.Add(gridtable_collumn1)
        gridtable.Columns.Add(gridtable_collumn11)
        gridtable.Columns.Add(gridtable_collumn18)
        gridtable.Columns.Add(gridtable_collumn19)
        gridtable.Columns.Add(gridtable_collumn20)
        Dim gridrow As DataGridViewRow
        Dim table_row As DataRow
        For Each gridrow In DataGridView1.Rows
            table_row = gridtable.NewRow
            table_row("column1") = gridrow.Cells("column1").Value
            table_row("column11") = gridrow.Cells("column11").Value
            table_row("column18") = gridrow.Cells("column18").Value
            table_row("column19") = gridrow.Cells("column19").Value
            table_row("column20") = gridrow.Cells("column20").Value
            gridtable.Rows.Add(table_row)
            gridtable.WriteXml(Application.StartupPath & "\Data\" & name & ".xml")
        Next gridrow

I have tried with the following code but when I use this, the data from my XML file appear at the end of my datagridview (Adding 5 more columns to the end). I would like to "update" the same columns...

Code I use to Load XML file:

Dim name As String
        name = IDTextBox.Text
        Dim xmlFile As XmlReader
        xmlFile = XmlReader.Create(Application.StartupPath & "\Data\" & Name & ".xml", New XmlReaderSettings())
        Dim ds As New DataSet
        ds.ReadXml(xmlFile)
        DataGridView1.DataSource = ds.Tables(0)

Anyone knows how I can load my XML file, and only update certain columns in my datagridview and not add 5 more columns to my datagridview?

Is there a way to load the XML data to my datagridview without binding the datagridview to the XML file?

I mean without the use of the:

DataGridView1.DataSource = ds.Tables(0)