--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Demo/Silverlight/Client/MainPage.xaml.cs	Thu Mar 27 21:46:09 2014 +0400
@@ -0,0 +1,62 @@
+using System;
+using System.Linq;
+using System.Threading;
+using System.Windows.Controls;
+using BLToolkit.Data.Linq;
+
+namespace Client
+{
+	public partial class MainPage : UserControl
+	{
+		public class Data
+		{
+			public string Name;
+			public int    Sum;
+		}
+
+		public MainPage()
+		{
+			InitializeComponent();
+
+			ThreadPool.QueueUserWorkItem(_ =>
+			{
+				try
+				{
+					using (var dm = new DataModel())
+					{
+						var q =
+							from c in dm.Categories
+							where  !c.CategoryName.StartsWith("Con")
+							orderby c.CategoryName
+							select  c.CategoryName;
+
+						(from t in dm.Categories
+						group t by t.CategoryName into g
+						select new Data
+						{
+							Name = g.Key,
+							Sum  = g.Sum(a => a.CategoryID)
+						}).ToList();
+
+						var text = string.Join("\n", q.ToArray());
+
+						Dispatcher.BeginInvoke(() => OutputText.Text = text);
+
+						dm.BeginBatch();
+
+						dm.Categories.Delete(c => c.CategoryID == -99999);
+						dm.Categories.Delete(c => c.CategoryID == -999999);
+
+						dm.CommitBatch();
+					}
+				}
+				catch (Exception ex)
+				{
+					Dispatcher.BeginInvoke(() => OutputText.Text = ex.Message);
+				}
+
+				//new ServiceReference1.TestLinqWebServiceSoap();
+			});
+		}
+	}
+}