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• Is DataGrid a necessity in WPF?

  - by Jobi Joy

  I have seen a lot of discussions going on and people asking about DataGrid for WPF and complaining about Microsoft for not having one with their WPF framework till date. We know that WPF is a great UI technology and have the Concept of ItemsControl,DataTemplate, etc,etc to make great UX. Even WPF has got a more closely matching control- ListView, which can be easily templated to give better UX than a traditional Datagrid like display. And I would say a readymade DataGrid control will kill or hide a lot of creativity and it surely will decrease the innovations in User Experience field. So what is your opinion about the need of DataGrid in WPF as a Framework component? If you feel it is necessary then is it just because the world is so used to the DatGrid way of data display for many years? Some other threads having the discussion about DatGrid are here and here Link to WPF ToolKit - Latest WPF DatGrid

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• ASP.NET website not working properly in mobile

  - by ria

  I have created a simple app with a page having a server side form, three fields and a button that submits and performs two operations - 1) adds the form fields to the database table 2) sends an email. Now everything works fine on the web browser on my machine but when I access the app through my mobile, the page does not seem to work. the UI and all are set but the button click functionality doesnt seem to be working and also the label which is set after a successful submit is already visible and showing the "thank you" message. Am i doing something wrong here? I have checked the app on Nokia Smartphone browser, android phone, and iphone simulator.

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• Web Service to connect to an API and get the response back from the API

  - by Scarlette_June

  This is a general Programming question I'm new to Java Web services programming using Apache Axis and JAX-RPC. We need to build 2 components,a App engine (Shopping cart, Payment Gateway integration etc..) and a UI Control Panel over an existing API. The API understands only XML.How we must communicate with the API? link text We have been asked to write a Web Service to establish the communication. Please provide the steps and a Code example/snippet on how to connect to an existing API through a Webservice and get the response back from the API to the calling Webservice. John,I hope I have been able to explain my query.If you have ideas on how to communicate with the API to get the desired result to the user,Please let us know. We have just started our careers in technology a year back post our graduation and this project is our very first Java EE project.

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• How to avoid "The name 'ConfigurationManager' does not exist in the current context" error?

  - by 5YrsLaterDBA

  I am using VS2008. I have a project connect with a database and the connection string is read from App.config via ConfigurationManager. We are using L2E. Now I added a helper project, AndeDataViewer, to have a simple UI to display data from the database for testing/verification purpose. I don't want to create another set of Entity Data Model in the helper project. I just added all related files as a link in the new helper project. When I compile, I got the following error: Error 15 The name 'ConfigurationManager' does not exist in the current context C:\workspace\SystemSoftware\SystemSoftware\src\systeminfo\RuntimeInfo.cs 24 40 AndeDataViewer I think I may need to add another project setting/config related file's link to the helper project from the main project? There is no App.config file in the new helper project. But it looks I cannot add that file's link to the helper project. Any ideas?

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• Why doesn’t ABPersonViewController show any properties besides the name?

  - by abrahamvegh

  For some reason, ABPersonViewController is unwilling to display any properties aside from the name, no matter what properties are set for it to display. I’m unable to use the AddressBookUI controllers to let a user select a contact to display, since my UI has custom requirements, otherwise I’d go that route (as Apple does in their sample project.) Here’s the code that doesn’t work — am I missing something? - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { // ABContact is of my own creation ABContact *contact = [self contactAtIndexPath: indexPath]; ABPersonViewController *viewController = [[ABPersonViewController alloc] init]; // This returns a valid ABRecordRef, as indicated by the fact that the // controller does display the name of this contact when it is loaded viewController.displayedPerson = contact.record; // Copied directly from Apple’s QuickContacts sample project NSArray *displayedItems = [NSArray arrayWithObjects:[NSNumber numberWithInt:kABPersonPhoneProperty], [NSNumber numberWithInt:kABPersonEmailProperty], [NSNumber numberWithInt:kABPersonBirthdayProperty], nil]; viewController.displayedProperties = displayedItems; [self.navigationController pushViewController: viewController animated: YES]; [viewController release]; }

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• insert and mofigy a record in an entity using Core Data

  - by aminfar

  I tried to find the answer of my question on the internet, but I could not. I have a simple entity in Core data that has a Value attribute (that is integer) and a Date attribute. I want to define two methods in my .m file. First method is the ADD method. It takes two arguments: an integer value (entered by user in UI) and a date (current date by default). and then insert a record into the entity based on the arguments. Second method is like an increment method. It uses the Date as a key to find a record and then increment the integer value of that record. I don't know how to write these methods. (assume that we have an Array Controller for the table in the xib file)

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• c# gridview row click

  - by Martijn

  When i click on a row in my gridview, i want to go to a other page with the id i get from the database. In my RowCreated event i have the following line: e.Row.Attributes.Add("onClick", ClientScript.GetPostBackClientHyperlink(this.grdSearchResults, "Select$" + e.Row.RowIndex)); To prevent error messages i have this code: protected override void Render(HtmlTextWriter writer) { // .NET will refuse to accept "unknown" postbacks for security reasons. Because of this we have to register all possible callbacks // This must be done in Render, hence the override for (int i = 0; i < grdSearchResults.Rows.Count; i++) { Page.ClientScript.RegisterForEventValidation(new System.Web.UI.PostBackOptions(grdSearchResults, "Select$" + i.ToString())); } // Do the standard rendering stuff base.Render(writer); } My question is, how can i give a row a unique id (from the DB) and when i click the row, another page is opened (like clicking on a href) and that page can read the id. Thnx

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• Silverlight tests not working unless RDP connection open

  - by Duncan Bayne

  I have a few Silverlight UI tests that I'm automating with White. These tests are subsequently run by a TFS build agent, which is running interactively so it can access the desktop. The build passes if I have a Remote Desktop connection open to the build agent as the tests are run; I can see the mouse pointer moving around. When the test clicks on a HyperlinkButton navigation takes place, and is subsequently verified by assertions within the test. The build fails if I do not have a Remote Desktop connection open to the build agent as the tests are run. The Internet Explorer window is created and the Silverlight app loads, but no clicks happen; the application remains on the initial page and test assertions subsequently fail. Has anyone out there found a solution to this problem?

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• How to test localized winforms application?

  - by Sun

  Background: I have created sample windows application for learning to implement localization. My each form has two RESX file. One for Bulgaria and one for French(Belgium). It has default culture English(XX) To test locally currently I am programmatically changing UICulture i.e. Thread.CurrentThread.CurrentUICulture = new CultureInfo("fr-BE"); And it works fine. Problem: How can I test without forcing the UI Culture programatically? I have tried changing Control Panel Regional Options Standard and Formats to French(Belgium). That made changes to DatePickerControl and now it display the dates French. However I can still see the Button text in English, where as if I test by injecting CultureInfo programmatically it changes to french. If I am able to change the standard and formats to French do I still need to Install Multilingual User Interface Pack (MUI)?

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• EntityFramework EntityState and databinding along with INotifyPropertyChanged

  - by OffApps Cory

  Hello, all! I have a WPF view that displays a Shipment entity. I have a textblock that contains an asterisk which will alert a user that the record is changed but unsaved. I originally hoped to bind the visibility of this (with converter) to the Shipment.EntityState property. If value = EntityState.Modified Then Return Visibility.Visible Else Return Visibility.Collapsed End If The property gets updated just fine, but the view is ignorant of the change. What I need to know is, how can I get the UI to receive notification of the property change. If this cannot be done, is there a good way of writing my own IsDirty property that handles editing retractions (i.e. if I change the value of a property, then change it back to it's original it does not get counted as an edit, and state remains Unchanged). Any help, as always, will be greatly appreciated. Cory

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• Synchronization between Client database and Central Database

  - by Indranil Mutsuddy

  Hello, I am trying to develop UI in C# .NET to synchronize 7 instances of backup databases with the central database one by one (All holding same schema) .The backup database( all 7 instances client databases) which is brought to the central server in a removable device such pendrive will consist of mdf and ldf files from each client and will be attached to the server where the central database resides. After all the client backup databases are attached i need to synchronize(update existing data or insert new data to the central database residing in server) each backup database one by one to central database. I want to know as how i can synchronize betweeen a backup database with a central database using C# .NET

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• Jqgrid in a dialog window is not showing on the second calling

  - by Dennis

  I have this script below that will call my browse window; var $dialog = $('') .load('scripts/browsecharges.jsp') .dialog({ width: 800, height: 500, modal: false, title: 'Browse Charges', buttons: { Ok: function() { $(this).dialog('destroy'); } }, close: function(event, ui) { $(this).dialog('destroy').remove(); } }); $dialog.dialog('open'); This browse window contains a jqgrid in it. At first my jqgrid works fine, I can see the data. But calling this browse window for the second time, my jqgrid will not show anymore. What should I do to open it as many times as I want?

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• Why i am not able to clear the date input field when i do not need? using jquery

  - by kumar

  I have this code in the view to display datepicker for input type.. $("input[id^='exc-flwup-']").datepicker({ duration: '', showTime: true, constrainInput: true, stepMinutes: 30, stepHours: 1, altTimeField: '', time24h: true, minDate: 0 }); This is my Input Filed in the Fieldset.. <label for="FollowupDate"> Follow-up: <span><input type="text" id="exc-flwup-<%=Model.ExceptionID %>" name="exc-flwup-<%=Model.ExceptionID %>" value="<%=Model.FollowupDate %>" /> </span> Problem Is when I click on the textbox on the UI I can select the date its working fine.. but when I am trying to clear the textbox its not going off its allways showing currect date and time.. Can anybody help me why its i am not able to make clear.. thanks

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• Multi-threading mechanisms to run some lengthy operations from winforms code and communication with

  - by tmarouda

  What do I want to achieve: I want to perform some time consuming operations from my MDI winforms application (C# - .NET). An MDI child form may create the thread with the operation, which may take long time (from 0.1 seconds, to even half hour) to complete. In the meantime I want the UI to respond to user actions, including manipulation of data in some other MDI child form. When the operation completes, the thread should notify the MDI child that the calculations are done, so that the MDI child can perform the post-processing. How can I achieve this: Should I use explicit threading (i.e., create explicit threads), thread pools? Or simply just propose your solution. Should I create foreground or background threads? And how does the thread communicates with the GUI, according the solution you propose? If you know of a working example that handles a similar situation, please make a note.

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• Sending Facebook notifications

  - by antpaw

  Hey i have a little facebook iframe application written with rails and the facebooker plugin. I can loop through the users friends and see whether they also have this application. To do this I use a fql qeury, and my own html (no fbml). Now i want to create a button right beside every friend who doesn't have this app, that sends an invite massage. Is it possible to do this without this FBML/JS voodoo? I looked through the RESTful api but the only thing i could found was this deprecated method :( Can someone provide me an code example on how to do this? I really don't want to use this FBML stuff because it doesn't fit into the ui concept of the app, but if that the only way, please explain how to do this (every fbml tag I've tried is just invisible :( ) Thanks a lot.

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• Binding custom property in Entity Framework

  - by deverop

  I have an employee entity in my EF model. I then added a class to the project to add a custom property public partial class Employee { public string Name { get { return string.Format("{0} {1}", this.FirstName, this.LastName); } } } On a aspx form (inside a FormView), I want to bind a DropDownList to the employee collection: <asp:Label runat="server" AssociatedControlID="ddlManagerId" Text="ManagerId" /> <asp:DropDownList ID="ddlManagerId" runat="server" DataSourceID="edsManagerId" DataValueField="Id" DataTextField="Name" AppendDataBoundItems="true" SelectedValue='<%# Bind("ManagerId") %>'> <asp:ListItem Text="-- Select --" Value="0" /> </asp:DropDownList> <asp:EntityDataSource ID="edsManagerId" runat="server" ConnectionString="name=Entities" DefaultContainerName="Entities" EntitySetName="Employees" EntityTypeFilter="Employee" EnableFlattening="true"> </asp:EntityDataSource> Unfortunately, when I fire up the page, I get an error: DataBinding: 'System.Web.UI.WebControls.EntityDataSourceWrapper' does not contain a property with the name 'Name'. Any ideas what I'm doing wrong?

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• Customize VisualStudio syntax highlighting even more

  - by Alex K

  Hi everybody, I am wondering if it is possible to set VisualStudio IDE so it highlights private/protected/public variables of the class differently as well as change formatting on locals (i.e. variables that are either passed in or declared inside a function, like this). I did not find any such options in the normal Fonts and Colors menu of VS. Also a search on SO reveals that (at least as of 2 years ago) only add-ons provide such features. But is there a way to manually edit some file? Just because we don't get a nice UI to edit, doesn't mean underlying framework automatically doesn't support it. I mean add-ons have to plug into something to do their magic in the editor. Any insights into this issue? Thanks!

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• Programmatically Setting Text Shadow Properties

  - by Ben Gribaudo

  Hello, PowerPoint has two kinds of shadows--shape and text. Shape shadows may be set by right-clicking on a shape (including a text box), choosing Format Text, then selecting Shadow or using VBA via the Shadow property on each shape: For Each Slide In ActivePresentation.Slides For Each Shape In Slide.Shapes Shape.Shadow.Size = 100 'etc Next Next How do I set text shadow's properties using VBA? In the UI, these may be accessed by right-clicking on text, choosing Format Text Effect, then selecting Shadow. I've done a bit of digging online and have been unable to find where these properties may be accessed via PowerPoint's VBA API. Thank you, Ben

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• Big smart ViewModels, dumb Views, and any model, the best MVVM approach?

  - by Edward Tanguay

  The following code is a refactoring of my previous MVVM approach (Fat Models, skinny ViewModels and dumb Views, the best MVVM approach?) in which I moved the logic and INotifyPropertyChanged implementation from the model back up into the ViewModel. This makes more sense, since as was pointed out, you often you have to use models that you either can't change or don't want to change and so your MVVM approach should be able to work with any model class as it happens to exist. This example still allows you to view the live data from your model in design mode in Visual Studio and Expression Blend which I think is significant since you could have a mock data store that the designer connects to which has e.g. the smallest and largest strings that the UI can possibly encounter so that he can adjust the design based on those extremes. Questions: I'm a bit surprised that I even have to "put a timer" in my ViewModel since it seems like that is a function of INotifyPropertyChanged, it seems redundant, but it was the only way I could get the XAML UI to constantly (once per second) reflect the state of my model. So it would be interesting to hear anyone who may have taken this approach if you encountered any disadvantages down the road, e.g. with threading or performance. The following code will work if you just copy the XAML and code behind into a new WPF project. XAML: <Window x:Class="TestMvvm73892.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="clr-namespace:TestMvvm73892" Title="Window1" Height="300" Width="300"> <Window.Resources> <ObjectDataProvider x:Key="DataSourceCustomer" ObjectType="{x:Type local:CustomerViewModel}" MethodName="GetCustomerViewModel"/> </Window.Resources> <DockPanel DataContext="{StaticResource DataSourceCustomer}"> <StackPanel DockPanel.Dock="Top" Orientation="Horizontal"> <TextBlock Text="{Binding Path=FirstName}"/> <TextBlock Text=" "/> <TextBlock Text="{Binding Path=LastName}"/> </StackPanel> <StackPanel DockPanel.Dock="Top" Orientation="Horizontal"> <TextBlock Text="{Binding Path=TimeOfMostRecentActivity}"/> </StackPanel> </DockPanel> </Window> Code Behind: using System; using System.Windows; using System.ComponentModel; using System.Threading; namespace TestMvvm73892 { public partial class Window1 : Window { public Window1() { InitializeComponent(); } } //view model public class CustomerViewModel : INotifyPropertyChanged { private string _firstName; private string _lastName; private DateTime _timeOfMostRecentActivity; private Timer _timer; public string FirstName { get { return _firstName; } set { _firstName = value; this.RaisePropertyChanged("FirstName"); } } public string LastName { get { return _lastName; } set { _lastName = value; this.RaisePropertyChanged("LastName"); } } public DateTime TimeOfMostRecentActivity { get { return _timeOfMostRecentActivity; } set { _timeOfMostRecentActivity = value; this.RaisePropertyChanged("TimeOfMostRecentActivity"); } } public CustomerViewModel() { _timer = new Timer(CheckForChangesInModel, null, 0, 1000); } private void CheckForChangesInModel(object state) { Customer currentCustomer = CustomerViewModel.GetCurrentCustomer(); MapFieldsFromModeltoViewModel(currentCustomer, this); } public static CustomerViewModel GetCustomerViewModel() { CustomerViewModel customerViewModel = new CustomerViewModel(); Customer currentCustomer = CustomerViewModel.GetCurrentCustomer(); MapFieldsFromModeltoViewModel(currentCustomer, customerViewModel); return customerViewModel; } public static void MapFieldsFromModeltoViewModel(Customer model, CustomerViewModel viewModel) { viewModel.FirstName = model.FirstName; viewModel.LastName = model.LastName; viewModel.TimeOfMostRecentActivity = model.TimeOfMostRecentActivity; } public static Customer GetCurrentCustomer() { return Customer.GetCurrentCustomer(); } //INotifyPropertyChanged implementation public event PropertyChangedEventHandler PropertyChanged; private void RaisePropertyChanged(string property) { if (PropertyChanged != null) { PropertyChanged(this, new PropertyChangedEventArgs(property)); } } } //model public class Customer { public string FirstName { get; set; } public string LastName { get; set; } public DateTime TimeOfMostRecentActivity { get; set; } public static Customer GetCurrentCustomer() { return new Customer { FirstName = "Jim", LastName = "Smith", TimeOfMostRecentActivity = DateTime.Now }; } } }

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• What does your ~/.gitconfig contain?

  - by Rajkumar S

  Hi, I am looking to pimp up my ~/.gitconfig to make it really beautiful and take maximum advantage of capabilities git can offer. My current ~/.gitconfig is below, what more would you add? Have some nice ~/.gitconfig you want to share? Any recommendations for merge and diff tools in linux? Post away and let's build a nice ~/.gitconfig [user] name = Rajkumar email = [email protected] [color] diff = auto status = auto branch = auto interactive = auto ui = true pager = true [color "branch"] current = yellow reverse local = yellow remote = green [color "diff"] meta = yellow bold frag = magenta bold old = red bold new = green bold [color "status"] added = yellow changed = green untracked = cyan [core] pager = less -FRSX whitespace=fix,-indent-with-non-tab,trailing-space,cr-at-eol [alias] co = checkout Thanks! raj

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• Dispatcher.Invoke not working in .NET 3.0 SP1

  - by Kapil

  I am developing a WPF windows application and am getting into a trouble running the app in .NET 3.0. Everytime that I try to access the System.Windows.Threading.Dispatcher.Invoke() method, I get a method-not-found error. Basically, I spawn a new thread from the main thread and try to change some UI properties (basically update a progress-bar) from the new thread using the following code: updateStatusDelegate usd = new updateStatusDelegate(progressBar.SetValue); Dispatcher.Invoke(usd, System.Windows.Threading.DispatcherPriority.Background, new object[] { System.Windows.Controls.ProgressBar.ValueProperty, Convert.ToDouble(perc) }); Can someone help me understand why do I encounter this error in .NET 3.0 version? I am able to get this going in .NET 3.0 SP2. But I guess .NET is not distributed independantly and is packaged only with .NET 3.5 version. My goal is to get away with the dependancy of .net 3.5 and have a dependancy on .NET 3.0 version Any help would be appreciated. Thanks Kapil

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• PageMethods security

  - by TenaciousImpy

  Hi, I'm trying to 'AJAX-ify' my site in order to improve the UI experience. In terms of performance, I'm also trying to get rid of the UpdatePanel. I've come across a great article over at Encosia showing a way of posting using PageMethods. My question is, how secure are page methods in a production environment? Being public, can anyone create a JSON script to POST directly to the server, or are there cross-domain checks taking place? My PageMethods would also write the data into the database (after filtering). I'm using Forms Authentication in my pages and, on page load, it redirects unauthenticated users to the login page. Would the Page Methods on this page also need to check authentication if the user POSTs directly to the method, or is that authentication inherited for the entire page? (Essentially, does the entire page cycle occur even if a user has managed to post only to the PageMethod)? Thanks

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• Programatically enable / disable multitouch finger input?

  - by winSharp93

  I have a multitoch-enabled tablet PC running Windows 7. However, when using the stylus pen and getting too far away from the display, I often accidently hit it with my fingers which causes unwanted mouse-clicks. The solution is navigating to "Control Panel - Pen- and Finger Input - Finger Input" and deactivate the checkbox "Use the finger as an input device" (all titles translated so they might be different on an English windows). Now I am wondering whether I can do this programatically, too, so I would be able to write a little tray app for this. I tried using Process Monitor to find out registry keys, however, I did not find one which really shows the same effect as the checkbox. Does anyone know how to access this property (without using UI-Automation)? Cheers winSharp93

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• A control that contains multiple duplicate properties causing deadlock issues on IIS

  - by heads5150

  I am trying to work out if the above case is true for our site. I've been told by my hosting provider that this fix (http://support.microsoft.com/kb/974165) has to applied to our server due to performance issues. It basically describes an issues where UI code like: <asp:gridview id="GridView1" runat="server" ... PageSize="100" PagerSettings-Mode="Numeric" PagerStyle-BorderStyle="None" PagerStyle-BorderColor="Navy" PagerStyle-HorizontalAlign="Right" PagerSettings-PageButtonCount="2" PagerSettings-Position="Bottom"> <PagerStyle HorizontalAlign="Left" BorderColor="Navy" BorderStyle="None"></PagerStyle> ... <PagerSettings PageButtonCount="2"></PagerSettings> ... </asp:gridview> causing the following warning on the server "ISAPI 'C:\Windows\Microsoft.NET\Framework\v2.0.50727\aspnet_isapi.dll' reported itself as unhealthy for the following reason: 'Deadlock detected'." Does anybody know of a way that I can detect this issue in the build process or the debugger? Any help would be much appreciate.

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• Linq2Sql relationships and WCF serialization problem

  - by devmania

  hi, here is my scenario i got Table1 id name Table2 id family fid with one to many relationship set between Table1. id and Table2.fid now here is my WCF service Code [OperationContract] public List<Table1> GetCustomers(string numberToFetch) { using (DataClassesDataContext context = new DataClassesDataContext()) { return context.Table1s.Take(int.Parse(numberToFetch)).ToList( ); } } and my ASPX page Code <body xmlns:sys="javascript:Sys" xmlns:dataview="javascript:Sys.UI.DataView"> <div id="CustomerView" class="sys-template" sys:attach="dataview" dataview:autofetch="true" dataview:dataprovider="Service2.svc" dataview:fetchParameters="{{ {numberToFetch: 2} }}" dataview:fetchoperation="GetCustomers"> <ul> <li>{{family}}</li> </ul> </div> though i set serialization mode to Unidirectional in Linq2Sql designer i am not able to get the family value and all what i get is this in firebug {"d":[{"__type":"Table1:#","id":1,"name":"asd"},{"__type":"Table1:#","id":2,"name":"wewe"}]} any help would be totally appreciated

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