silverlight 4 datagrid

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application

Silverlight4

Dear sir

i have data in entities databaise sqlserver2008 in case view data in datagrid don't

see data but out in data grid checkbox in places filds.

this my code
<usercontrol>
x:Class="BusinessApplication5.MainPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:navigation="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Navigation"
xmlns:uriMapper="clr-namespace:System.Windows.Navigation;assembly=System.Windows.Controls.Navigation"
xmlns:dataControls="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Data.DataForm.Toolkit"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d" d:DesignWidth="640" d:DesignHeight="480" xmlns:sdk="http://schemas.microsoft.com/winfx/2006/xaml/presentation/sdk">

<grid x:name="LayoutRoot" style="{StaticResource LayoutRootGridStyle}" xmlns:x="#unknown">

<border x:name="ContentBorder" style="{StaticResource ContentBorderStyle}">
<navigation:frame x:name="ContentFrame" style="{StaticResource ContentFrameStyle}" xmlns:navigation="#unknown">
Source="/Home" Navigated="ContentFrame_Navigated" NavigationFailed="ContentFrame_NavigationFailed">
<navigation:frame.urimapper>
<urimapper:urimapper xmlns:urimapper="#unknown">
<urimapper:urimapping uri="" mappeduri="/Views/Home.xaml">
<urimapper:urimapping uri="/{pageName}" mappeduri="/Views/{pageName}.xaml">





<grid style="{StaticResource NavigationOuterGridStyle}">
<grid x:name="NavigationGrid" style="{StaticResource NavigationGridStyle}">

<border x:name="BrandingBorder" style="{StaticResource BrandingBorderStyle}">
<stackpanel x:name="BrandingStackPanel" style="{StaticResource BrandingStackPanelStyle}">

<contentcontrol style="{StaticResource LogoIcon}">
<textblock x:name="ApplicationNameTextBlock" style="{StaticResource ApplicationNameStyle}">
Text="{Binding ApplicationStrings.ApplicationName, Source={StaticResource ResourceWrapper}}"/>




<border x:name="LinksBorder" style="{StaticResource LinksBorderStyle}">
<stackpanel x:name="LinksStackPanel" style="{StaticResource LinksStackPanelStyle}">

<hyperlinkbutton x:name="Link1" style="{StaticResource LinkStyle}">
NavigateUri="/Home" TargetName="ContentFrame" Content="{Binding Path=ApplicationStrings.HomePageTitle, Source={StaticResource ResourceWrapper}}"/>

<rectangle x:name="Divider1" style="{StaticResource DividerStyle}">

<hyperlinkbutton x:name="Link2" style="{StaticResource LinkStyle}">
NavigateUri="/About" TargetName="ContentFrame" Content="{Binding Path=ApplicationStrings.AboutPageTitle, Source={StaticResource ResourceWrapper}}"/>






<border x:name="loginContainer" style="{StaticResource LoginContainerStyle}">
<!-- LoginStatus will be added here in code behind. This is required for the designer view to work -->

<sdk:datagrid autogeneratecolumns="False" height="240" horizontalalignment="Left" margin="6,91,0,0" name="dgcar" verticalalignment="Top" width="619" flowdirection="RightToLeft" xmlns:sdk="#unknown">
<sdk:datagrid.columns>
<sdk:datagridcheckboxcolumn binding="{Binding Path=DateAppointment,Mode=TwoWay}" header="تاريخ الاستلام " canuserreorder="True" canuserresize="True" canusersort="True" width="100">
<sdk:datagridcheckboxcolumn binding="{Binding Path=N_Car,Mode=TwoWay}" header="رقم السيارة" canuserreorder="True" canuserresize="True" canusersort="True" width="150">
<sdk:datagridcheckboxcolumn binding="{Binding Path=NameCustemer,Mode=TwoWay}" header="اسم الزبون" canuserreorder="True" canuserresize="True" canusersort="True" width="200">
<sdk:datagridcheckboxcolumn binding="{Binding Path=PhoneCustemer,Mode=TwoWay}" header="رقم التلفون " canuserreorder="True" canuserresize="True" canusersort="True" width="*">