How do i send a selected row on a datagrid to a shopping cart please, Thanks for ya time and help!

VB Code:
  1. Private Sub DGItems_ItemCommand(ByVal source As Object, ByVal e As System.Web.UI.WebControls.DataGridCommandEventArgs) Handles DGItems.ItemCommand
  2.  
  3.         Dim vItemID As String
  4.         Dim vItemNames As String
  5.         Dim vSaleQty As String
  6.         Dim vPricePaid As String
  7.  
  8.         vItemID = e.Item.Cells(0).Text
  9.         vItemNames = e.Item.Cells(1).Text
  10.         vSaleQty = e.Item.Cells(2).Text
  11.         vPricePaid = e.Item.Cells(3).Text
  12.  
  13.  If (e.CommandName = "AddToCart") Then
  14.            
  15.         End If
  16.         Me.DGItems.DataBind()
  17.     End Sub