Ndtyjky

I needed to make the columns in different Grids move dependently on each other. I found a good solution:

1. In the properties create value
   
   


2. In the xamlI create a binding:

 <Grid.ColumnDefinitions>

    <ColumnDefinition 

        Width="{Binding Source={x:Static properties:Settings.Default}, Path=GridColumnWidth,

        Converter={StaticResource ColumnWidthConverter}, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"

        MinWidth="50"></ColumnDefinition>

    <ColumnDefinition Width="Auto"></ColumnDefinition>

    <ColumnDefinition Width="*" MinWidth="50"></ColumnDefinition>

</Grid.ColumnDefinitions>

3. And implement converter:

public class ColumnWidthConverter : IValueConverter

{

    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)

    {

        if (value is string str && !str.Equals("*"))

            return new GridLength(double.Parse(str));

        return new GridLength(1, GridUnitType.Star);

    }



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

    {

        if (value is GridLength gridLength)

            return gridLength.Value.ToString(CultureInfo.InvariantCulture);

        return "*";

    }

}

Now I needed to do the same in CodeBehind. I do this:

ColumnDefinition propertyNameColumnDefinition = new ColumnDefinition();

propertyNameColumnDefinition.MinWidth = 50;

BindingOperations.SetBinding(propertyNameColumnDefinition, WidthProperty, CreateBindingForColumnWidth());

ColumnDefinition gridSplitterColumnDefinition = new ColumnDefinition() { Width = GridLength.Auto };

ColumnDefinition propertyValueColumnDefinition = new ColumnDefinition();

propertyValueColumnDefinition.MinWidth = 50;

grid.RowDefinitions.Add(headerRowDefinition);

grid.ColumnDefinitions.Add(propertyNameColumnDefinition);

grid.ColumnDefinitions.Add(gridSplitterColumnDefinition);

grid.ColumnDefinitions.Add(propertyValueColumnDefinition);

.......

private Binding CreateBindingForColumnWidth()

{

    Binding b = new Binding

    {

        Source = mpESKD.Properties.Settings.Default,

        Path = new PropertyPath("GridColumnWidth"),

        Mode = BindingMode.TwoWay,

        UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged,

        Converter = new ColumnWidthConverter()

    };

    return b;

}

In this case, nothing works.
What am I doing wrong?

Must be:

BindingOperations.SetBinding(propertyNameColumnDefinition, ColumnDefinition.WidthProperty, CreateBindingForColumnWidth());

Thank for ASh for his comment