无法从另一个线程（WPF）绑定DataGridTextColumn属性

Question

I'm updating DataGrid through binding from different thread (Task).

I have zero problems with updating column values.

<DataGridTextColumn Header="NAME" MinWidth="100" Width="10*" Binding="{Binding name}" />

But some of my columns should also have different background color that is coming from database. And I can't update background property.

<DataGridTextColumn Header="" Width="10">
                    <DataGridTextColumn.CellStyle>
                        <Style TargetType="DataGridCell">
                            <Setter Property="Background" Value="{Binding color}" />
                        </Style>
                    </DataGridTextColumn.CellStyle>
                </DataGridTextColumn>

I'm running into this issue:

Must create DependencySource on same Thread as the DependencyObject

Could you please advice what I do need to do?

PS Freeze() helps, but I suppose to think that it's not a way to do it.

Answer 1

So I solved it by making converter.

I have made new class

public sealed class ColorCodeConverter : IValueConverter
{
   public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
   {
      ...
   }

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

Then connect it as resouce in the App.xaml

<local:ColorCodeConverter x:Key="ColorCodeConverter" />

And in the MainWindow.xaml I have following

<DataGridTextColumn Header="" Width="10">
    <DataGridTextColumn.CellStyle>
        <Style TargetType="DataGridCell">
            <Setter Property="Background" Value="{Binding C7, Converter={StaticResource ColorCodeConverter}}" />
        </Style>
    </DataGridTextColumn.CellStyle>
</DataGridTextColumn>

So you just need to bind you string via ViewModel and that's all. No need to use Freeze(), etc.