[EnableClientAccess()]
    public class DomainServiceData : LinqToEntitiesDomainService<immovablesEntities>
    {

public IQueryable<ArealTable> GetArealTable()
        {
            return this.ObjectContext.ArealTable;
        }

 public void InsertArealTable(ArealTable arealTable)
        {
            if ((arealTable.EntityState != EntityState.Detached))
            {
                this.ObjectContext.ObjectStateManager.ChangeObjectState(arealTable, EntityState.Added);
            }
            else
            {
                this.ObjectContext.ArealTable.AddObject(arealTable);
            }
        }

var query = ctx.GetArealTableQuery();
            LoadOperation<ArealTable> op = ctx.Load(query);
            MainLeft.ItemsSource = op.Entities;

ArealTable areal = new ArealTable
            {
                name = "testing",
                

            };
            ctx.ArealTables.Add(areal);
            SubmitOperation op = ctx.SubmitChanges();

USE [immovables]
GO

/****** Object:  Table [dbo].[ArealTable]    Script Date: 06/24/2011 11:33:21 ******/
SET ANSI_NULLS ON
GO

SET QUOTED_IDENTIFIER ON
GO

CREATE TABLE [dbo].[ArealTable](
	[id] [int] IDENTITY( 1 , 1 ) NOT NULL,
	[name] [nvarchar](max) NULL
) ON [PRIMARY]

GO