Displaying Specific Data In Labels?

I'm having some problems with a program I'm making in vb.net. I have two forms: one containing a datagrid with basic details of orders (date received, total value of the order, customer who placed it, date it was sent out). The second form contains a datagrid with more details (the stock code and quantity of each product purchased) on each indivual order. The second form also has a label containing the total value of the order. All this information is stored in a database.

By clicking on a row in the datagrid in form 1, I capture the OrderID of this row and use that to look up the information form 2 requires in my database. I only want to show the details of the order that was clicked. I'm having no problems filling the datagrid with the information I want but I'm unsure of how to get the label working.

I figure I might need to do something invloving a datatable, like this:

Dim table As DataTable
Dim row As DataRow
table = orders.Tables("Orders")
row = table.Select("Total", "OrderID = '" _passedText "'")
Label1.Text = "'row'"

Where Total is the column I want it to display and Label1 where I want it; _passedText the variable containing the OrderID of the record that the user clicked on form 1.