Perform Click On Cell In DataGridView

I have a button on a datagridview (dgproducts)that when clicked, sends the data from that row to another datagridview called (DgSelectedProducts) in a Keypress. The button on dgproducts is unbound and is (0) and is named AddProductsButton in the collection. I am using a barcode scanner into txtboxsearchbarcodeID so that when the user enters the barcode to the textbox it finds the barcode in the dgproducts it filters down to that item.

When I say filter I mean all the items that do not match are not shown on the dgproducts datagridview. Only a single item can match. That part works ok. The problem that I am having is that I do not know how to perform a click on the cell(0) ie addproductsbutton so that the item is passed from the dgproducts to the dgselectedproducts when the item is scanned. This is for a POS form so it needs to do this.

Private Sub txtBarcodeSearch_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles txtBarcodeSearch.KeyPress
' If e.Handled = Keys.Enter Then
txtSearchTerm.Text = txtBarcodeSearch.Text
Me.CBOProducts.DisplayMember = "ProductIDBarcode"
cmbSearchField.Text = "ProductIDBarcode"
[Code] .....