ColumnWidthConverter.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Data;

namespace WPF.Common.WPF.Converters
{
    /// <summary>
    /// This converter targets a column header,
    /// in order to take its width to zero when
    /// it should be hidden
    /// </summary>
    public class ColumnWidthConverter
        : IValueConverter
    {
        public object Convert(
            object value,
            Type targetType,
            object parameter,
            System.Globalization.CultureInfo culture)
        {
            var isVisible = (bool)value;
            var width = double.Parse(parameter as string);
            return isVisible ? width : 0.0;
        }


        public object ConvertBack(
            object value,
            Type targetType,
            object parameter,
            System.Globalization.CultureInfo culture)
        {
            throw new NotImplementedException();
        }

    }
}