How to get datacontext from stackpanel

Question

I have:

 <StackPanel  DataContext="{Binding Path =MyContext}">

                <TextBox Text="{Binding Path =Content}" x:Name="tbName" IsReadOnly="False">
                </TextBox>
                <CheckBox x:Name="cboxName" Content="Is null ?" Click="cboxName_Click" IsChecked="{Binding Path=THIS, Converter={StaticResource MyContextToBoolConverter}}">
                </CheckBox>
            </StackPanel>



public class MyContextToBoolConverter: IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
           return (value!=null);
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            return parameter;
        }
    }

I just only want to get DataContext to checkbox from StackPanel.

Answer 1

You should replace THIS with . or completely remove the Path from the Binding. This will create a binding directly to the DataContext.

IsChecked="{Binding Converter={StaticResource MyContextToBoolConverter}}"

Answer 2

Or try this -

<StackPanel x:Name="StackPanel" DataContext="{Binding Path =MyContext}"> 

            <TextBox Text="{Binding Path =Content}" x:Name="tbName" IsReadOnly="False"> 
            </TextBox> 
            <CheckBox x:Name="cboxName" Content="Is null ?" Click="cboxName_Click" IsChecked="{Binding ElementName=StackPanel, Path=DataContext, Converter={StaticResource MyContextToBoolConverter}}"> 
            </CheckBox> 
        </StackPanel>