Vb.Net WPF How to find TextBox control nested in a ListBoxItem template?

Question

Hi everyone,

Firstly, thank you for taking the time out to read this post.

I'm having trouble trying to loop through a WPF ListBox control to find a nested TextBox in VB.net 3.5.

Here is my UI structure:

TabControl > TabItem > UserControl > Grid > ListBox > ListBoxItem > Grid > TextBox

I have a page that Contains a TabControl. When the TabControl loads, I loop through each TabItem to dynamically add a UserControl which contains a grid, where the first grid row contains a ListBox. In each ListBox I dynamically add 8 ListItems, where each item is DataTemplate that contains another Grid that houses an Image, TextBox and Button.

I need to loop through all of the items to find the textbox nested in each ListBoxItem. I've managed to drill down the the ListBoxItem level but I don't know how to dig further down to find the TextBox.

Here is my VB code so far:



'Loop through TabItems in TabControl
For tabItems As Integer = 0 To tabInspection.Items.Count - 1
'Create object of the current TabItem
Dim tabItem As TabItem = tabInspection.Items(tabItems)
'Continue if TabItem Header is not Save and Exit
If tabItem.Header <> "Save and Exit" Then
'Find ListBox that is nested in UserControl, Grid
For Each ctrl As Control In tabItem.Content.Content.Children
'Check if control found is a ListBox
If ctrl.GetType().FullName = GetType(ListBox).FullName Then
'Create Control object of the ListBox
Dim lstBox As ListBox = CType(ctrl, ListBox)
'Loop Through ListBox items
For Each item In lstBox.Items
MessageBox.Show(item.ToString, "List Box Item")
' *** NEED TO FIND TEXTBOX CONTROL NESTED IN A LISTBOX ITEM > GRID ***
Next
End If
Next
End If
Next


Any advice is greatly appreciated!

Thank you again for your time,

Rob