send a selected row on a datagrid to a shopping cart

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

VB Code:

Private Sub DGItems_ItemCommand(ByVal source As Object, ByVal e As System.Web.UI.WebControls.DataGridCommandEventArgs) Handles DGItems.ItemCommand
 
        Dim vItemID As String 
        Dim vItemNames As String
        Dim vSaleQty As String
        Dim vPricePaid As String
 
        vItemID = e.Item.Cells(0).Text
        vItemNames = e.Item.Cells(1).Text
        vSaleQty = e.Item.Cells(2).Text
        vPricePaid = e.Item.Cells(3).Text
 
 If (e.CommandName = "AddToCart") Then
           
        End If
        Me.DGItems.DataBind()
    End Sub