BindingExpression path error: 'DisplayName' property not found on 'object' - wpf

Question

I'm new to wpf and I'm trying use a DataTemplate to create menu, to learn how to use DataTemplates.
I get the following binding error and no text appears in the control and I can't see why.
Binding Error
System.Windows.Data Error: 40 : BindingExpression path error: 'DisplayName' property not found on 'object' ''StartOptionsViewModel' (HashCode=7730701)'. BindingExpression:Path=DisplayName; DataItem='StartOptionsViewModel' (HashCode=7730701); target element is 'TextBlock' (Name=''); target property is 'Text' (type 'String')
MainWindow.XAML is:
<Window x:Class="MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Colin's Test Application" Width="600" Height="400">
<Window.Resources>
<!-- WIZARD STEP TEMPLATE -->
<DataTemplate x:Key="OptionsTemplate">
<Border x:Name="bdOuter" BorderBrush="Black" BorderThickness="0,0,1,1" CornerRadius="12" Margin="1,1,1,12" Opacity="1" SnapsToDevicePixels="True" >
<Border x:Name="bdInner" Background="#FFFEFEFE" BorderBrush="Brown" BorderThickness="2,2,1,1" CornerRadius="12" Padding="2" >
<TextBlock x:Name="txt" Margin="4,0,0,0" Foreground="Black" Text="{Binding Path=DisplayName, Mode=OneWayToSource}" />
</Border>
</Border>
</DataTemplate>
</Window.Resources>
<StackPanel VerticalAlignment="Center">
<ItemsControl
ItemsSource="{Binding Path=StartOptions}"
ItemTemplate="{StaticResource OptionsTemplate}"
/>
</StackPanel>
</Window>
My MainWindoViewModel.cs
public partial class MainWindowViewModel
{
private List<StartOptionsViewModel> _listStartOptionsVM = new List<StartOptionsViewModel>();
public MainWindowViewModel()
{
_listStartOptionsVM.AddRange(new StartOptionsViewModel[]
{
new StartOptionsViewModel(new StartOption("New Application", StartOption.StartOptionTypes.Button)),
new StartOptionsViewModel(new StartOption("Exit Application", StartOption.StartOptionTypes.Button))
});
}
public ReadOnlyCollection<StartOptionsViewModel> StartOptions
{
get
{
return new ReadOnlyCollection<StartOptionsViewModel>(_listStartOptionsVM);
}
}
}
`
StartOptionsViewModel.cs:
public class StartOptionsViewModel
{
private StartOption m_startOption = null;
public StartOptionsViewModel(StartOption p_startOption)
{
m_startOption = p_startOption;
}
#region Properties
public string DisplayName
{
get { return m_startOption.DisplayName; }
set
{
//...
}
}
#endregion
}

Answer 1

first of all you are binding your textblock mode in wrong way because textbox text never be set from ui means on runtime by user son it' smode can't be onewaytosource it should be one way so first you should have correct that like this..
<TextBlock
x:Name="txt"
Margin="4,0,0,0"
Foreground="Black"
Text="{Binding Path=DisplayName, Mode=OneWay}"
/>
first make it correct and run your code and comment if your problem persists.