RadButton not visible on Project Load

[Matthew]

When this project is loaded in debug mode the RadButton is not visible, however if I Comment out the code for the button during debug, save it, uncomment the code and save again - T

<Window x:Class="ButtonsDisappear.MainWindow"

        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

        xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"

        Title="MainWindow"

        Height="600"

        Width="800"

        WindowState="Maximized">

    <Grid>

        <Grid.RowDefinitions>

            <RowDefinition Height="35"/>

            <RowDefinition Height="*"/>

            <RowDefinition Height="35"/>

        </Grid.RowDefinitions>

        <Grid.ColumnDefinitions>

            <ColumnDefinition Width="*"/>

        </Grid.ColumnDefinitions>

        <Grid Grid.Row="2" Grid.Column="0">

            <Grid.RowDefinitions>

                <RowDefinition x:Name="gridRow2" Height="*"/>

            </Grid.RowDefinitions>

            <Grid.ColumnDefinitions>

                <ColumnDefinition x:Name="gridColumn0" Width="*"/>

                <ColumnDefinition x:Name="gridColumn1" Width="*"/>

            </Grid.ColumnDefinitions>

            <telerik:RadButton Grid.Row="0" Grid.Column="0"

                           x:Name="radButton"

                           Content="Test Button"

                           HorizontalAlignment="Center"

                           VerticalAlignment="Center"

                           Width="{Binding ElementName=gridColumn0, Path=ActualWidth}"

                           Height="{Binding ElementName=gridRow2, Path=ActualHeight}" 

                           Click="radButton_Click"/>

        </Grid>

    </Grid>

</Window>

 

using System.Windows;
using Telerik.Windows.Controls;

namespace ButtonsDisappear
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }
        private void radButton_Click(object sender, RoutedEventArgs e)
        {
            RadButton b = (RadButton)sender;
        }
    }
}

he button becomes visible...

[Matthew]

Problem resolved - issue is that ActualHeight/ActualWidth are not calculated  until page and controls are loaded... 

 

https://stackoverflow.com/questions/1695101/why-are-actualwidth-and-actualheight-0-0-in-this-case