The Checkbox in the template comumn needs to be ASP Checkbox
Make sure you have assigned  the datakey to the grid

My comments follow --

        ' Walk the grid looking for selected rows

        Dim i As Integer = 0  -- This is not needed

        Dim cb As CheckBox
        Dim dgi As DataGridItem
        Dim MCode As Integer
        Dim str As String


        For Each dgi In dgMachines.Items
            cb = CType(dgi.FindControl("chkDel"), CheckBox)

		-- Check if cb is not nothing

            If cb.Checked Then
                ' Determine the key of the selected record ...
                MCode = CType(dgMachines.DataKeys(dgi.ItemIndex),
Integer) -- Use the Itemindex property
                ' ... get a pointer to the corresponding dataset record ...
                str = str + MCode.ToString

            End If
            i += 1 -- Not needed
        Next

-----Original Message-----
From: bounce-aspx_professional-1184710@p...
[mailto:bounce-aspx_professional-1184710@p...]On Behalf Of
artimahendra@s...
Sent: Tuesday, January 14, 2003 11:29 AM
To: ASPX_Professional
Subject: [aspx_professional] RE: Data Grid


nope - it is not working....

Pl check out the code :
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles Button1.Click



        ' Walk the grid looking for selected rows

        Dim i As Integer = 0
        Dim cb As CheckBox
        Dim dgi As DataGridItem
        Dim MCode As Integer
        Dim str As String


        For Each dgi In dgMachines.Items
            cb = CType(dgi.FindControl("chkDel"), CheckBox)
            If cb.Checked Then
                ' Determine the key of the selected record ...
                MCode = CType(dgMachines.DataKeys(i), Integer)
                ' ... get a pointer to the corresponding dataset record ...
                str = str + MCode.ToString

            End If
            i += 1
        Next
End Sub

thanks