[Closed] dotnet datagrid not getting selection count

Why does this not display the selected indices count after selection is made?
It may seem like a lot of code but it’s just UI setup. The actual command is simple and short.
It always shows zero?

rollout groupToolRO "groupTool"
(
	local groups = #() --Array of groupData structs
	local uiGroupList
	local uiNodeList
	struct groupData (name = "", nodes = #())

	dotNetControl uiContainer "ContainerControl" pos:[0,0]
	
	fn AddGroup name:"" nodes:#() = 
	(
		nodes = makeUniqueArray (for i = 1 to (random 5 15) collect ("teapot00" + i as string))
		d = groupData()
		d.name = name
		d.nodes = makeUniqueArray nodes

		append groups d
	)

	fn ResizeUI =
	(
		local width = groupToolRO.width
		local height = groupToolRO.height

		uiContainer.width = width
		uiContainer.height = height
	)

	fn RefreshGroupsUI ctrl:uiGroupList = 
	(
		local groupItems = #()

		for g in groups do
		(
			newRow = dotNetObject "DataGridViewRow"
			newRow.height = 22

			ctrl.rows.add newRow

			newRow.cells.item[0].value = g.name
			newRow.cells.item[0].ToolTipText = "Node Count: " + g.nodes.count as string
		)
		uiGroupList.update()

		--PopulateNodesUI()
	)

	fn GenerateDataGrid =
	(
		local ctrl = dotNetObject "DataGridView"
		ctrl.MultiSelect = true
		ctrl.AllowUserToAddRows = false
		ctrl.AllowUserToDeleteRows = false
		ctrl.AllowUserToResizeRows = false
		ctrl.AllowUserToResizeColumns = true
		ctrl.AllowUserToOrderColumns = false
		ctrl.AutoSize = True
		ctrl.ShowEditingIcon = false
		ctrl.RowHeadersVisible = false
		ctrl.ColumnHeadersBorderStyle = ctrl.ColumnHeadersBorderStyle.None
		ctrl.ColumnHeadersHeightSizeMode = ctrl.ColumnHeadersHeightSizeMode.DisableResizing
		ctrl.SelectionMode = ctrl.SelectionMode.CellSelect
		ctrl.ColumnHeadersVisible = true
		ctrl.BorderStyle = ctrl.BorderStyle.FixedSingle
		ctrl.AutoResizeColumns()
		ctrl
	)

	fn GenerateColumns columns:#() =
	(
		local dnColumns = #()
		for n in columns do
		(
			local newColumn = dotNetObject "DataGridViewTextBoxColumn"
			newColumn.Resizable = newColumn.Resizable.true
			newColumn.AutoSizeMode = newColumn.AutoSizeMode.Fill
			newColumn.DefaultCellStyle.Alignment.MiddleLeft
			newColumn.HeaderText = n
			newColumn.ReadOnly = true
			newColumn.sortMode = newColumn.sortMode.NotSortable
			append dnColumns newColumn
		)
		dnColumns
	)

	fn GenerateRows ctrl:undefined data:#() =
	(
		for d in data do
		(
			newRow = dotNetObject "DataGridViewRow"
			newRow.height = 22
			
			--newRow.tag = dotNetMXSValue d.node
			ctrl.rows.add newRow
			newRow.cells.item[0].value = d
			newRow.cells.item[0].ToolTipText = "Node Count: " + 10 as string
		)
	)


	fn clickedGroups s e = 
	(
		enableaccelerators = off
		s.Focus()
		print s.SelectedRows.count

	)

	fn StyleContainer ctrl:undefined =
	(
		uiSplitCtrl = dotNetObject "splitContainer"
		uiSplitCtrl.dock = uiSplitCtrl.dock.fill
		uiSplitCtrl.AutoScroll = true
		uiSplitCtrl.SplitterWidth = 6
		uiSplitCtrl.SplitterDistance = 60
		ctrl.controls.add uiSplitCtrl
		
		-- Control
		uiGroupList = GenerateDataGrid()
		uiGroupList.dock = uiGroupList.dock.fill
		uiGroupList.Columns.AddRange (GenerateColumns columns:#("Groups"))
		uiSplitCtrl.panel1.controls.add uiGroupList
		-- control handlers
		dotNet.addEventHandler uiGroupList "Click" clickedGroups
	)

	on groupToolRO open do
	(
		-- ui control styling
		StyleContainer ctrl:uiContainer
		ResizeUI()

		--test data
		AddGroup name:"great"
		AddGroup name:"monkey"
		AddGroup name:"donuts"

		RefreshGroupsUI()
	)

	on groupToolRO resized val do
	(
		ResizeUI()
	)
)
createDialog groupToolRO width:400 height:300 style:#(#style_SysMenu, #style_titlebar, #style_minimizebox, #style_resizing)