update UI in stream from ViewModel

When you try to use a separate thread, the error System.Windows.Markup.XamlParseException: ""Задание свойства "System.Windows.Controls.Image.Source" вызвало исключение.": номер строки "25" и позиция в строке "13"." takes off System.Windows.Markup.XamlParseException: ""Задание свойства "System.Windows.Controls.Image.Source" вызвало исключение.": номер строки "25" и позиция в строке "13"." And if the data is updated in the textbox , then everything is working fine, and if in image , then the indicated error takes off.

Exeption: InnerException {"Необходимо создать DependencySource в том же потоке, в котором создан DependencyObject."} System.Exception {System.ArgumentException}

Stack StackTrace " в System.Windows.Markup.WpfXamlLoader.Load(XamlReader xamlReader, IXamlObjectWriterFactory writerFactory, Boolean skipJournaledProperties, Object rootObject, XamlObjectWriterSettings settings, Uri baseUri)\r\n в System.Windows.Markup.WpfXamlLoader.LoadBaml(XamlReader xamlReader, Boolean skipJournaledProperties, Object rootObject, XamlAccessLevel accessLevel, Uri baseUri)\r\n в System.Windows.Markup.XamlReader.LoadBaml(Stream stream, ParserContext parserContext, Object parent, Boolean closeStream)\r\n в System.Windows.Application.LoadComponent(Object component, Uri resourceLocator)\r\n в VideoMessager.MainWindow.InitializeComponent() в C:\\Users\\Medhelp\\source\\repos\\VideoMessager\\VideoMessager\\MainWindow.xaml:строка 1" string : StackTrace " в System.Windows.Markup.WpfXamlLoader.Load(XamlReader xamlReader, IXamlObjectWriterFactory writerFactory, Boolean skipJournaledProperties, Object rootObject, XamlObjectWriterSettings settings, Uri baseUri)\r\n в System.Windows.Markup.WpfXamlLoader.LoadBaml(XamlReader xamlReader, Boolean skipJournaledProperties, Object rootObject, XamlAccessLevel accessLevel, Uri baseUri)\r\n в System.Windows.Markup.XamlReader.LoadBaml(Stream stream, ParserContext parserContext, Object parent, Boolean closeStream)\r\n в System.Windows.Application.LoadComponent(Object component, Uri resourceLocator)\r\n в VideoMessager.MainWindow.InitializeComponent() в C:\\Users\\Medhelp\\source\\repos\\VideoMessager\\VideoMessager\\MainWindow.xaml:строка 1" string

A model that works with text

 class TestText : INotifyPropertyChanged { public void UpdateText(Action<string> action) { for (int i = 0; i < 100; i++) { action(i.ToString()); Thread.Sleep(500); } } public void UpdateFrame(Action<BitmapSource> updateDelegate) { while (true) { string name = Assembly.GetEntryAssembly().GetName().Name; for (int i = 0; i < 29; i++) { BitmapImage image = new BitmapImage(new Uri(@"pack://application:,,,/" + name + ";Component/Img/frame_" + i.ToString() + "_delay-0.08s.gif")); updateDelegate(image); Thread.Sleep(50); } } } public event PropertyChangedEventHandler PropertyChanged; protected void OnPropertyChanged(string name) { PropertyChangedEventHandler handler = PropertyChanged; if (handler != null) { handler(this, new PropertyChangedEventArgs(name)); } } } 

Viewmodel

 using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.ComponentModel; using VideoMessager.Models; using System.Windows.Media.Imaging; using System.Net; using System.Windows.Controls; namespace VideoMessager.ViewModels { public delegate void UpdateImagesDelegate(BitmapImage image); class Main : INotifyPropertyChanged { private VideoCall video; public VideoCall Video { get { return video; } set { video = value; OnPropertyChanged("Video"); } } private BitmapSource imageFrame; public BitmapSource ImageFrame { get { return imageFrame; } set { imageFrame = value; OnPropertyChanged("ImageFrame"); } } private string testText; public string TestText { get { return testText; } set { testText = value; OnPropertyChanged("TestText"); } } public TestText test = new TestText(); public Main() { Video = new VideoCall(IPAddress.Parse("127.0.0.1"), 5600); var UpdateFrame = Task.Run(() => { test.UpdateText(UpdateUI); test.UpdateFrame(UpdateImage); }); } public void UpdateImage(BitmapSource image) { ImageFrame = image; } public void UpdateUI(string s) { TestText = s; } public event PropertyChangedEventHandler PropertyChanged; protected void OnPropertyChanged(string name) { PropertyChangedEventHandler handler = PropertyChanged; if (handler != null) { handler(this, new PropertyChangedEventArgs(name)); } } } } 

View

 <Window x:Class="VideoMessager.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:local="clr-namespace:VideoMessager" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:viewModel="clr-namespace:VideoMessager.ViewModels" Title="Main" Width="300" Height="300" mc:Ignorable="d"> <Window.DataContext> <viewModel:Main /> </Window.DataContext> <Grid> <Image Width="272" Height="212" Margin="10,26,0,0" HorizontalAlignment="Left" VerticalAlignment="Top" Source="{Binding Path=ImageFrame, UpdateSourceTrigger=PropertyChanged, Mode=TwoWay}" /> <Button Width="134" Margin="148,243,0,0" HorizontalAlignment="Left" VerticalAlignment="Top" Content="Выбрать" /> <Button Width="133" Margin="10,243,0,0" HorizontalAlignment="Left" VerticalAlignment="Top" Content="Отправить" /> <TextBox Width="120" Height="23" Margin="106,35,0,0" HorizontalAlignment="Left" VerticalAlignment="Top" Text="{Binding Path=TestText, UpdateSourceTrigger=PropertyChanged, Mode=TwoWay}" TextWrapping="Wrap" /> </Grid> </Window>