Get The actual width of the border in the ControlTemplate

     

<Window x:Class="WpfApplication1.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="WPF" Height="100" Width="160">

    <Window.Resources>
        <ControlTemplate x:Key="buttonTemplate" TargetType="{x:Type Button}">
            <Border x:Name="border" BorderThickness="3" BorderBrush="DarkGray" Background="LightGray">
                <ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
            </Border>
            <ControlTemplate.Triggers>
                <Trigger Property="IsMouseOver" Value="True">
                    <Setter TargetName="border" Property="Background" Value="Orange"/>
                </Trigger>
            </ControlTemplate.Triggers>
        </ControlTemplate>
    </Window.Resources>
    <Grid>
        <Button x:Name="button" Height="24" HorizontalAlignment="Stretch" Content="Custom Template"
                Template="{StaticResource buttonTemplate}" Click="Button_Click">
        </Button>
    </Grid>
</Window>
//File:Window.xaml.vb
Imports System
Imports System.Windows
Imports System.Windows.Controls

Namespace WpfApplication1
  Public Partial Class Window1
    Inherits Window
    Public Sub New()
      InitializeComponent()
    End Sub

    Private Sub Button_Click(sender As Object, e As RoutedEventArgs)
      Dim borderInTemplate As Border = DirectCast(button.Template.FindName("border", button), Border)
      Console.WriteLine(borderInTemplate.GetValue(Border.ActualWidthProperty))
    End Sub
  End Class
End Namespace

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Get The actual width of the border in the ControlTemplate : ControlTemplate « Windows Presentation Foundation « VB.Net

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