packages/MaterialDesignThemes.2.5.0.1205/src/net45/MaterialDataGridComboBoxColumn.cs

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using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;

namespace MaterialDesignThemes.Wpf
{
    public class MaterialDataGridComboBoxColumn : DataGridComboBoxColumn //DataGridBoundColumn
    {
        static MaterialDataGridComboBoxColumn()
        {            
            ElementStyleProperty.OverrideMetadata(typeof(MaterialDataGridComboBoxColumn), new FrameworkPropertyMetadata(DefaultElementStyle));
            EditingElementStyleProperty.OverrideMetadata(typeof(MaterialDataGridComboBoxColumn), new FrameworkPropertyMetadata(DefaultEditingElementStyle));
        }

        public Binding ItemsSourceBinding { get; set; }

        protected override FrameworkElement GenerateElement(DataGridCell cell, object dataItem)
        {
            var comboBox = base.GenerateElement(cell, cell);

            if (ItemsSourceBinding != null)
                comboBox.SetBinding(ItemsControl.ItemsSourceProperty, ItemsSourceBinding);
            ApplyStyle(false, false, comboBox);                       

            return comboBox;
        }

        protected override FrameworkElement GenerateEditingElement(DataGridCell cell, object dataItem)
        {
            var comboBox = (ComboBox)base.GenerateElement(cell, cell);

            if (ItemsSourceBinding != null)
                comboBox.SetBinding(ItemsControl.ItemsSourceProperty, ItemsSourceBinding);            
            ApplyStyle(true, false, comboBox);            

            return comboBox;
        }

        public static new Style DefaultElementStyle
        {
            get
            {
                var comboBox = new ComboBox();

                var brushKey = new ComponentResourceKey(typeof(ComboBox), "MaterialDataGridComboBoxColumnStyle");
                var style = (Style)comboBox.TryFindResource(brushKey);

                return style;
            }
        }

        public static new Style DefaultEditingElementStyle
        {
            get
            {
                var comboBox = new ComboBox();

                var brushKey = new ComponentResourceKey(typeof(ComboBox), "MaterialDataGridComboBoxColumnEditingStyle");
                var style = (Style)comboBox.TryFindResource(brushKey);