Question Start in learn WPF and I have a little problem...

[hed bisker]

I have read this book https://www.tutorialspoint.com/wpf/wpf_tutorial.pdf

and on page 22,23 this code example do not run....

and Am I missing?


UserControl1.xaml

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
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 WpfApplication3
{
    /// <summary>
    /// Interaction logic for UserControl1.xaml
    /// </summary>
    public partial class UserControl1 : UserControl
    {
        public UserControl1()
        {
            InitializeComponent();
        }


        public static readonly DependencyProperty SetTextProperty =
            DependencyProperty.Register("SetText", typeof(string), typeof(UserControl1),
            new PropertyMetadata("", new PropertyChangedCallback(OnSetTextChanged)));


        public string SetText
        {
            get { return (string)GetValue(SetTextProperty); }
            set { SetValue(SetTextProperty, value); }
        }


        private static void OnSetTextChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            UserControl1 UserControl1Control = d as UserControl1;
            UserControl1Control.OnSetTextChanged(e);
        }
        private void OnSetTextChanged(DependencyPropertyChangedEventArgs e)
        {
            tbTest.Text = e.NewValue.ToString();
        }
    }
}

<UserControl x:Class="WpfApplication3.UserControl1"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             xmlns:local="clr-namespace:WpfApplication3"
             mc:Ignorable="d" 
             d:DesignHeight="450" d:DesignWidth="800">
    <Grid>
            
    </Grid>
</UserControl>

and MainWindow.xaml

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
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 WpfApplication3
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }
    }
}

<Window x:Class="WpfApplication3.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:views="clr-namespace:WpfApplication3"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800">
    <Grid>
        <views:UserControl1 SetText="Hellow World"/>
    </Grid>
</Window>

Thanks a lot

This is the errors I got

 

[jmcilhinney]

With regards to the first error, that seems to be indicating that you haven't added a TextBox named tbTest to your user control.