using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace SetCellBackground
{
    /// <summary>
    /// Interaction logic for Window1.xaml
    /// </summary>
    public partial class Window1 : Window
    {
        public Window1()
        {
            InitializeComponent();

            List<Item> items = new List<Item>();
            for (int i = 0; i < 10; i++)
            {
                items.Add(new Item() { ID = i, Name = "Name" + i });
            }

            this.RadGridView1.ItemsSource = items;
            this.RadGridView1.CellValidating += new EventHandler<Telerik.Windows.Controls.GridViewCellValidatingEventArgs>(RadGridView1_CellValidating);
        }

        void RadGridView1_CellValidating(object sender, Telerik.Windows.Controls.GridViewCellValidatingEventArgs e)
        {
            e.Cell.Background = Brushes.Red;
        }

    }

    public class Item
    {
        public int ID { get; set; }
        public string Name { get; set; }
    }
}
