WPF

<ListBox Grid.Row="0" AlternationCount="2" MinHeight="305" HorizontalAlignment="Stretch"  Name="listBox1" VerticalAlignment="Stretch" MinWidth="537" >            
    <ListBox.ItemTemplate>                
        <DataTemplate>                    
                <StackPanel Name="stkPanel" MinHeight="80" MinWidth="500" HorizontalAlignment="Stretch" VerticalAlignment="Stretch">
                    <Grid>
                        <Grid.ColumnDefinitions>
                            <ColumnDefinition Width="40"/>
                        <ColumnDefinition Width="Auto"/>
                    </Grid.ColumnDefinitions>
                    <DataGrid Grid.Column="1" 
                              AutoGenerateColumns="True" 
                              MinHeight="75" 
                              HorizontalAlignment="Center" 
                              Name="dataGrid1" 
                              VerticalAlignment="Stretch" 
                              MinWidth="470" 
                              MaxWidth="900" 
                              ItemsSource="{Binding}" 
                              IsReadOnly="True" Background="#E6BAB7B7">
                        <DataGrid.ColumnHeaderStyle>
                            <Style TargetType="DataGridColumnHeader">
                                <Setter Property="ContentTemplate">
                                    <Setter.Value>
                                        <DataTemplate>
                                            <CheckBox Name="colCheckBox" IsChecked="{Binding IsChecked, ElementName=IsDone, Mode=OneWay}" Content="{Binding}"/>
                                        </DataTemplate>
                                    </Setter.Value>
                                </Setter>
                            </Style>
                        </DataGrid.ColumnHeaderStyle>
                    </DataGrid>
                    <CheckBox  Grid.Column="0" Height="35" Width="25" Name="IsDone" HorizontalAlignment="Right" VerticalAlignment="Center" Checked="IsDone_Checked" />
                    </Grid>                        
            </StackPanel>                   
        </DataTemplate>
    </ListBox.ItemTemplate>
</ListBox> 

First-chance exception at 0x75212EEC (KernelBase.dll) in WRLDesktop.exe: 0x0000071A: The remote procedure call was canceled, or if a call time-out was specified, the call timed out.

If there is a handler for this exception, the program may be safely continued.

wtsapi32.dll!56eb210f() Unknown
WindowsBase.ni.dll!5cf134c8()   Unknown
[Managed to Native Transition]
PresentationCore.dll!System.Windows.Interop.HwndTarget.Dispose()    Unknown
PresentationCore.dll!System.Windows.Interop.HwndSource.Dispose(bool disposing)  Unknown
PresentationCore.dll!System.Windows.Interop.HwndSource.OnHwndDisposed(object sender, System.EventArgs args) Unknown
WindowsBase.dll!MS.Win32.HwndWrapper.Dispose(bool disposing, bool isHwndBeingDestroyed) Unknown
WindowsBase.dll!MS.Win32.HwndWrapper.WndProc(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam, ref bool handled) Unknown
WindowsBase.dll!MS.Win32.HwndSubclass.DispatcherCallbackOperation(object o) Unknown
WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate callback, object args, int numArgs)  Unknown
WindowsBase.dll!MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(object source, System.Delegate method, object args, int numArgs, System.Delegate catchHandler) Unknown
WindowsBase.dll!System.Windows.Threading.Dispatcher.LegacyInvokeImpl(System.Windows.Threading.DispatcherPriority priority, System.TimeSpan timeout, System.Delegate method, object args, int numArgs)   Unknown
WindowsBase.dll!MS.Win32.HwndSubclass.SubclassWndProc(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam)  Unknown
[Native to Managed Transition]
user32.dll!74cf7694()   Unknown
user32.dll!74cf95ab()   Unknown

public ref class D2DHost : public HwndHost
{
private:
	HWND mWnd;

public:
	D2DHost() {}

protected:
	virtual HandleRef BuildWindowCore(HandleRef hwndParent) override
	{
		HWND parentHwnd = (HWND)hwndParent.Handle.ToPointer();
		mWnd = ::CreateWindowEx(0, "static", NULL,
			WS_CHILD | WS_VISIBLE,
			0, 0, 100, 100,
			parentHwnd,
			NULL,
			(HINSTANCE)GetModuleHandle(NULL),
			NULL);

		if (!mWnd)
			return HandleRef(nullptr, System::IntPtr::Zero);

		return HandleRef(this, IntPtr(mWnd));
	}

	virtual void DestroyWindowCore(HandleRef hwnd) override
	{
		::DestroyWindow(mWnd);
	}
};

<Window.Resources>
    <HierarchicalDataTemplate x:Key="NodeTemplate">
        <StackPanel Orientation="Horizontal">
            <TextBlock x:Name="name" Text="" FontSize="14"/>
            <TextBlock x:Name="inter" Text=" " />
            <TextBox x:Name="value" Text="" FontSize="14"    />
        </StackPanel>
        <HierarchicalDataTemplate.ItemsSource>
            <Binding XPath="child::node()|attribute::*" />


        </HierarchicalDataTemplate.ItemsSource>
        <HierarchicalDataTemplate.Triggers>
            <DataTrigger Binding="{Binding Path=NodeType}" Value="Element">
                <Setter TargetName="name" Property="Text" Value="{Binding Path=Name}"></Setter>
            </DataTrigger>
            <DataTrigger Binding="{Binding Path=NodeType}" Value="Text">
                <Setter TargetName="value" Property="Text" Value="{Binding Path=Value}"></Setter>
            </DataTrigger>
            <DataTrigger Binding="{Binding Path=NodeType}" Value="Attribute">
                <Setter TargetName="name" Property="Text" Value="{Binding Path=Name}"></Setter>
                <Setter TargetName="inter" Property="Text" Value=": "></Setter>
                <Setter TargetName="value" Property="Text" Value="{Binding Path=Value}"></Setter>
            </DataTrigger>
            <DataTrigger Binding="{Binding Path=NodeType}" Value="CDATA">
                <Setter TargetName="value" Property="Text" Value="{Binding Path=Value}"></Setter>
            </DataTrigger>
            <DataTrigger Binding="{Binding Path=NodeType}" Value="Comment">
                <Setter TargetName="value" Property="Text" Value="{Binding Path=Value}"></Setter>
            </DataTrigger>
            <DataTrigger Binding="{Binding Path=NodeType}" Value="ProcessingInstruction">
               <Setter TargetName="value" Property="Text" Value="{Binding Path=Value}"></Setter>
            </DataTrigger>
        </HierarchicalDataTemplate.Triggers>
    </HierarchicalDataTemplate>
    <XmlDataProvider x:Key="xmlDataProvider"></XmlDataProvider>
</Window.Resources>
<Grid>
    <TreeView Margin="0,24,0,273"
              Name="treeView1"
              Background="AliceBlue"
              ItemsSource="{Binding Source={StaticResource xmlDataProvider}, XPath=*}"
              ItemTemplate= "{StaticResource NodeTemplate}"
              TreeViewItem.Selected="TreeViewItemSelected"
              SelectedItemChanged="SelectedItemChanged">

    </TreeView>
</Grid>

        public XMLDataViewerModel(bool largeRegisters, XmlDataProvider dataProvider)
        {
            DataProvider = dataProvider;
            DataProvider.Document = new XmlDocument();

            DataProvider.Document.NodeChanged += new XmlNodeChangedEventHandler(Document_NodeChanged);
            DataProvider.Document.NodeInserted += new XmlNodeChangedEventHandler(Document_NodeChanged);

            Undo = new Deque<XmlDocument>();
            Redo = new Deque<XmlDocument>();
            //            XDoc = DataProvider.Document;
        }

        void Document_NodeChanged(object sender, XmlNodeChangedEventArgs e)
        {
//            SaveForUndo();

        }

        void Document_NodeInserted(object sender, XmlNodeChangedEventArgs e)
        {
//            SaveForUndo();
        }

<Page.CommandBindings>
  <local:StateCommandBinding
    Command="{x:Static local:Pages.ChooseLanguage.CustomRoutedCommand}"
    Executed="{x:Static local:Commands.ExecutedCommandEnglish}"
    CanExecute="CanExecute"
    State="SwipeCardToBegin" />
</Page.CommandBindings>

I have a dataset and I want to bind my richtextbox to a field so that it autopopulates and when user leaves the textbox it validates for changes and updates the database field. How do I do this in WPF?

In winforms it is simple as rtb.Databindings.Add("Text", datasource, datafield)

but this is not in WPF

<DataGrid RowEditEnding="dtgMyList_RowEditEnding" ItemsSource="{Binding ListAllItems}" AutoGenerateColumns="False" Grid.Row="1" x:Name="dtgMyList" Margin="2,2,2,2"  VerticalAlignment="Top">
    <DataGrid.Columns>
        <DataGridTextColumn IsReadOnly="True" Binding="{Binding ArtikelID, NotifyOnSourceUpdated=True}"  Header="ID"/>
        <DataGridTextColumn IsReadOnly="False" Binding="{Binding ArtikelBeschreibung, UpdateSourceTrigger=LostFocus}" Header="Beschreibung"/>
        <DataGridTextColumn IsReadOnly="False" Binding="{Binding Gesperrt,UpdateSourceTrigger=LostFocus}" Header="Gesperrt"/>
    </DataGrid.Columns>
</DataGrid>

public delegate void RowEditIntercept(object sender, DataGridRowEditEndingEventArgs e);

public event RowEditIntercept MyRowChanged;

private void dtgMyList_RowEditEnding(object sender, DataGridRowEditEndingEventArgs e)
{
    MyDataDataSerice ser = new MyDataDataSerice(this);
    MyRowChanged(sender, e);

}

private MainWindow _window;

public MyDataDataSerice(MainWindow window)
{
    _window = window;
    this._window.MyRowChanged += new RowEditIntercept(DoEditMyRows);
}


internal void DoEditMyRows(object sender, DataGridRowEditEndingEventArgs e)
{
    if (e.EditAction == DataGridEditAction.Commit)
    {
        linqMyDataDataContext context = new linqMyDataDataContext();
        tblStammDaten stamm = e.Row.DataContext as tblStammDaten;

        var matchedData = (from em in context.GetTable<tblStammDaten>()
                           where em.ArtikelID == stamm.ArtikelID
                           select em).SingleOrDefault();

        matchedData.ArtikelBeschreibung = stamm.ArtikelBeschreibung;
        matchedData.Gesperrt = stamm.Gesperrt;
        context.SubmitChanges();

    }
}

<pre>public partial class MainWindow : Window
    {
        public Student student = new Student();
        public ObservableCollection<Student> studentData = new ObservableCollection<Student>();
        public MainWindow()
        {
            InitializeComponent();

            //Set initial values
            student.Name = "Whatever";
            student.CalculusMarks = 0;
            student.EnglishMarks = 0;
            student.ProgrammingMarks = 0;
            student.Percentage = 0;

            //Read values to collection
            studentData.Add(new Student { Name=student.Name, CalculusMarks = student.CalculusMarks, EnglishMarks = student.EnglishMarks, ProgrammingMarks = student.ProgrammingMarks, Percentage=student.Percentage});

            //Set data context
            datagrid1.DataContext = studentData;

        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            //Perform calculation
            student.Percentage = (double)(student.CalculusMarks + student.EnglishMarks + student.ProgrammingMarks) * 100 / 300;
        }

        public class Student : INotifyPropertyChanged
        {
            private string _name;
            private int _calculusMarks;
            private int _englishMarks;
            private int _programmingMarks;
            private double _percentage;

            public string Name
            {
                get
                {
                    return _name;
                }

                set
                {
                    _name = value;
                    OnPropertyChanged("Name");
                }
            }

            public int CalculusMarks
            {
                get
                {
                    return _calculusMarks;
                }

                set
                {
                    _calculusMarks = value;
                    OnPropertyChanged("CalculusMarks");
                }
            }

            public int EnglishMarks
            {
                get
                {
                    return _englishMarks;
                }

                set
                {
                    _englishMarks = value;
                    OnPropertyChanged("EnglishMarks");
                }
            }

            public int ProgrammingMarks
            {
                get
                {
                    return _programmingMarks;
                }

                set
                {
                    _programmingMarks = value;
                    OnPropertyChanged("ProgrammingMarks");
                }
            }

            public double Percentage
            {
                get
                {
                    return _percentage;
                }

                set
                {
                    _percentage = value;
                    OnPropertyChanged("Percentage");
                }
            }

            public event PropertyChangedEventHandler PropertyChanged;    

            private void OnPropertyChanged(string propertyName)
            {
                if (PropertyChanged != null)
                {
                    PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
                }
            }
        }
    }

<<pre>Grid>
        <DataGrid Name="datagrid1" AutoGenerateColumns="False" ItemsSource="{Binding}">
            <DataGrid.Columns>    
                <DataGridTextColumn x:Name="NameCol" Header="Name" Width="*" Binding="{Binding Path=Name, NotifyOnSourceUpdated=True, UpdateSourceTrigger=PropertyChanged}"/>
                <DataGridTextColumn x:Name="CalculusMarksCol" Header="Calculus" Width="*" Binding="{Binding Path=CalculusMarks, Mode=TwoWay, NotifyOnSourceUpdated=True, UpdateSourceTrigger=PropertyChanged}"/>
                <DataGridTextColumn x:Name="EnglishMarksCol" Header="English" Width="*" Binding="{Binding Path=EnglishMarks, Mode=TwoWay, NotifyOnSourceUpdated=True, UpdateSourceTrigger=PropertyChanged}"/>
                <DataGridTextColumn x:Name="ProgrammingMarksCol" Header="Programming" Width="*" Binding="{Binding Path=ProgrammingMarks, Mode=TwoWay, NotifyOnSourceUpdated=True, UpdateSourceTrigger=PropertyChanged}"/>
                <DataGridTextColumn x:Name="PercentageCol" Header="Percentage" Width="*" Binding="{Binding Path=Percentage, Mode=TwoWay, NotifyOnSourceUpdated=True, UpdateSourceTrigger=PropertyChanged}"/>
            </DataGrid.Columns>
        </DataGrid>
        <DockPanel LastChildFill="False">
            <Button Content="Update" Height="50" Width="75" Margin="5" DockPanel.Dock="Bottom" Click="Button_Click" />
        </DockPanel>
    </Grid

<<pre>Style x:Key="dataGridRowStyle" TargetType="DataGridRow">
                <Style.Triggers>
                    <DataTrigger Binding="{Binding Checked}" Value="True">
                        <Setter Property="Background" Value="LightGray"/>
                    </DataTrigger>
                </Style.Triggers>
            </Style

<<pre>DataGrid Name="amortizationSchedule" ItemsSource="{Binding}" AutoGenerateColumns="False" HorizontalContentAlignment="Center" CanUserAddRows="False" HorizontalScrollBarVisibility="Auto" RowStyle="{StaticResource dataGridRowStyle}" DockPanel.Dock="Top">
                        <DataGrid.Resources>
                            <Style TargetType="DataGridCell">
                                <Setter Property="Template">
                                    <Setter.Value>
                                        <ControlTemplate TargetType="DataGridCell">
                                            <Grid Background="{TemplateBinding Background}">
                                                <ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
                                            </Grid>
                                        </ControlTemplate>
                                    </Setter.Value>
                                </Setter>
                            </Style>
                            <Style TargetType="DataGridColumnHeader">
                                <Setter Property="HorizontalContentAlignment" Value="Center"/>
                            </Style>
                        </DataGrid.Resources>
                        <DataGrid.Columns>
                            <DataGridCheckBoxColumn Header="Paid?" Binding="{Binding Checked, Mode=TwoWay}" CanUserReorder="False" CanUserSort="False" CanUserResize="False"/>
                            <DataGridTextColumn Header="Payment #" Binding="{Binding monthlyPaymentNumber}" MaxWidth="150" Width="Auto" CanUserReorder="False" CanUserSort="False" CanUserResize="False" IsReadOnly="True"/>
                            <DataGridTextColumn Header="Payment Date" Binding="{Binding monthlyPaymentDate}" MaxWidth="150" Width="*" CanUserReorder="False" CanUserSort="False" CanUserResize="False" IsReadOnly="True"/>
                            <DataGridTextColumn Header="Payment Amount" Binding="{Binding monthlyPaymentAmount}" MaxWidth="150" Width="Auto" CanUserReorder="False" CanUserSort="False" CanUserResize="False" IsReadOnly="True"/>
                            <DataGridTextColumn Header="Principle Portion" Binding="{Binding monthlyPrinciplePortion}" MaxWidth="150" Width="*" CanUserReorder="False" CanUserSort="False" CanUserResize="False" IsReadOnly="True"/>
                            <DataGridTextColumn Header="Interest Portion" Binding="{Binding monthlyInterestPortion}" MaxWidth="150" Width="*" CanUserReorder="False" CanUserSort="False" CanUserResize="False" IsReadOnly="True"/>
                            <DataGridTextColumn Header="Ending Balance" Binding="{Binding monthlyEndingBalance}" MaxWidth="150" Width="*" CanUserReorder="False" CanUserSort="False" CanUserResize="False" IsReadOnly="True"/>
                            <DataGridTextColumn Header="Extra Payments Paid to Principle" Binding="{Binding monthlyExtraPaymentsToPrinciple}" Width="*"/>
                        </DataGrid.Columns>

                    </DataGrid

if (File.Exists(myXMLPath))
            {
                DataSet ds = new DataSet();
                dt = new DataTable();
                dt.TableName = "dataTable";
                ds.ReadXml(myXMLPath);
                this.DataContext = ds.Tables[0].DefaultView;
            }