ASP.NET

Very simple. Here is the code

     Protected Sub Grid1_ItemDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.DataGridItemEventArgs) Handles Grid1.ItemDataBound
        If Not e.Item.DataItem Is Nothing Then
            Dim intBalToAlloc As Int64
            Dim intNoHoldQty As Int64


            Dim strTable As String
            intBalToAlloc = DataBinder.Eval(e.Item.DataItem, "balToAlloc").ToString
            intNoHoldQty = DataBinder.Eval(e.Item.DataItem, "intSuborderQtyRemainingNoHolds").ToString


            strTable = "Balance to Allocate:" & intBalToAlloc & vbCrLf
            strTable += "NoHold Qty Remaining: " & intNoHoldQty & vbCrLf
            e.Item.Cells(8).ToolTip = strTable
            e.Item.Cells(9).ToolTip = strTable
            e.Item.Cells(10).ToolTip = strTable
            e.Item.Cells(11).ToolTip = strTable


        End If
    End Sub