ComboBox (w/ wrapping) binding/render problem

Below is the code to recreate the problem I'm having, the ComboBoxItems with TextBlock content, do not render correctly when bound to. Mousing over the ComboBox corrects the issue. So I have 2 questions. Why does the mouse over fix it? How do i have it correctly work with out the mouse over being required?

MainWindow.xaml

<Window x:Class="ComboBoxError.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="MainWindow" Height="350" Width="525" Loaded="Window_Loaded">
<StackPanel>
    <ComboBox SelectedValuePath="Tag" SelectedValue="{Binding Path=Property1, Mode=TwoWay}">
        <ComboBoxItem Tag="Good" Content="Good" />
        <ComboBoxItem Tag="Fair" Content="Fair" />
        <ComboBoxItem Tag="Poor" Content="Poor" />
        <ComboBoxItem Tag="Affected by limited food preference">
            <TextBlock TextWrapping="Wrap" Width="150" FontWeight="Normal">Affected by limited food preference</TextBlock>
        </ComboBoxItem>
        <ComboBoxItem Tag="Refused" Content="Refused" />
        <ComboBoxItem Tag="Not applicable or unable to assess">
            <TextBlock TextWrapping="Wrap" Width="150" FontWeight="Normal">Not applicable or unable to assess</TextBlock>
        </ComboBoxItem>
        <ComboBoxItem Tag="Other" Content="Other" />
    </ComboBox>
</StackPanel>

MainWindow.xaml.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace ComboBoxError
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public Model Model = new Model();

        public MainWindow()
        {
            InitializeComponent();

            this.DataContext = Model;
        }

        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            Model.Property1 = "Affected by limited food preference";
            //Model.Property1 = "Good";
        }
    }
}

Model.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.ComponentModel;

namespace ComboBoxError
{
    public class Model : INotifyPropertyChanged
    {
        private string _property1;

        public string Property1
        {
            get { return _property1; }
            set
            {
                _property1 = value;

                OnPropertyChanged("Property1");
            }

        }

        public event PropertyChangedEventHandler PropertyChanged;
        protected void OnPropertyChanged(string propertyName)
        {
            if (this.PropertyChanged != null)
                PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
        }
    }
}

Thanks for the help...

ansaurus

tags:

views:

answers:

ComboBox (w/ wrapping) binding/render problem

related questions