Find inner visual element : UI Element « Windows Presentation Foundation « VB.Net Tutorial






<Window x:Class="VisualTree.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="VisualTree" Height="300" Width="300">
  
    <Grid>
      <Button Click="MyClickEvent" Name="btnGo">
        <TextBox Width="173" Height="27" Name="txt">
        </TextBox>        
      </Button>      
    </Grid>  
</Window>

//File:Window.xaml.vb
Imports System
Imports System.Collections.Generic
Imports System.Text
Imports System.Windows
Imports System.Windows.Controls
Imports System.Windows.Data
Imports System.Windows.Documents
Imports System.Windows.Input
Imports System.Windows.Media
Imports System.Windows.Media.Imaging
Imports System.Windows.Shapes


Namespace VisualTree
  Public Partial Class Window1
    Inherits System.Windows.Window

    Public Sub New()
      InitializeComponent()
    End Sub

    Private Sub MyClickEvent(sender As Object, e As RoutedEventArgs)
      Dim desiredNode As Object = btnGo.FindName("txt")
      If TypeOf desiredNode Is TextBox Then
        Dim desiredChild As TextBox = TryCast(desiredNode, TextBox)
        desiredChild.Background = Brushes.Green
      End If
    End Sub

  End Class
End Namespace
WPF Find Inner Visual Element








16.50.UI Element
16.50.1.Find enclosure componentFind enclosure component
16.50.2.Clear locally set values and restore the default values of dependency propertiesClear locally set values and restore the default values of dependency properties
16.50.3.PresentationTraceSources.SetTraceLevel(binding,PresentationTraceLevel.High);PresentationTraceSources.SetTraceLevel(binding,PresentationTraceLevel.High);
16.50.4.UI Element Mouse Clicked EventsUI Element Mouse Clicked Events
16.50.5.Programmatically Extract an Element's Style with DefaultStyleKeyPropertyProgrammatically Extract an Element's Style with DefaultStyleKeyProperty
16.50.6.Print Logical TreePrint Logical Tree
16.50.7.Print Visual TreePrint Visual Tree
16.50.8.About Dialog with Tree WalkingAbout Dialog with Tree Walking
16.50.9.Changing graphical elementsChanging graphical elements
16.50.10.UIElement CountUIElement Count
16.50.11.Use Linq to get control from a containerUse Linq to get control from a container
16.50.12.Find inner visual elementFind inner visual element
16.50.13.Logical Visual Tree SampleLogical Visual Tree Sample
16.50.14.Point Hit Test with VisualTreeHelper.HitTestPoint Hit Test with VisualTreeHelper.HitTest
16.50.15.Change the Visibility property of a UIElement.Change the Visibility property of a UIElement.
16.50.16.Mixing graphics with Control ElementsMixing graphics with Control Elements