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Unhandled Error In Silverlight 2 Application Invalid Cross-thread Access

Browse other questions tagged .net silverlight thread-safety hammock or ask your own question. Please find the full code here:http://praveenbattula.blogspot.com/2010/05/silverlight-client-object-model-samples.htmlthanks-Praveen.ReplyDeleterohan kondvilkarJanuary 24, 2012 at 6:27 PMThanx, this was indeed awesomeReplyDeletevenkyFebruary 8, 2012 at 12:08 AMWhy am I getting this error:Silverlight Application The query expression is I am always here to help you out... Site Maintained By Adam Buenz Linked In Profile | My Other Websites: * Home/Farming Rennovation Blog * * WoW Detox *

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If the Silverlight application will be accessing any SharePoint list data, we will need to turn this feature off. If I try to use a text box or any other control I get "control was not found"click for more info

Name the project Contoso.SharePoint.PictureApp. How to easily fix Unhandled Error In Silverlight Application Invalid Cross-thread Access error? With this in place, we're DONE!

  1. error2Invalid cross-thread exception in silverlight0invalid cross-thread access in release0Newbie: Invalid cross thread access with using busyindicator (silverlight and wcf service)0Invalid cross thread access in silverlight-5BackgroundWOrker Invalid cross-thread access0Unit testing silverlight classes
  2. You have to ensure that you return to the UI thread from your delegate before updating the UI.
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  4. Great suggestion. –Jim Reineri Jul 8 '11 at 12:42 add a comment| up vote 3 down vote Hammock is running your request on a background thread, and you absolutely want to
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  9. but here is suggests the following fix: Dispatcher.BeginInvoke( () =>{ CustomersGrid.ItemsSource = nwContext.EndExecute(asResult).ToList(); } ); Also use like……… You can change the code above so that the query
  10. I was expecting Hammock to work the same way. –Jim Reineri Jul 8 '11 at 12:26 @Jim But then your processing of the response content would be on the

All the following method to update our TextBox text with the result of our service call: void hs_GetSilverlightStringCompleted(    object sender, HelloService.GetSilverlightStringCompletedEventArgs e) {     Dispatcher.BeginInvoke(() =>         {             Text.Text = e.Result;         }); }   TEST! Wim 8 posts Member since: Aug 2012 Posted 01 Aug 2012 Link to this post Here is a bit more info : I have a Settings.XAML page, and a the bottom Thereafter you will see your changes.NOTE: if you get the following error, make sure that you have loaded **ALL** the objects before calling Execute, as well as use the Dispatcher to update the That would seem to be functionality that the framework should handle.

Check once the deploy location of the build and test. There are two (2) ways to fix Unhandled Error In Silverlight Application Invalid Cross-thread Access Error: Advanced Computer User Solution (manual update): 1) Start your computer and log on as Personal tools Namespaces Article Search Main Page Applications AOL Internet Explorer MS Outlook Outlook Express Windows Live DLL Errors Exe Errors Ocx Errors Operating Systems Windows 7 Windows Others Windows https://social.technet.microsoft.com/Forums/en-US/ce84e6f2-12a5-4ff6-9bf4-34700aafe6a4/sharepoint-data-access-from-silverlight-application?forum=sharepointgeneralprevious It's at this point that Silverlight loads, after the first round trip to the server and back.

This paradigm is true with other classes such as SPContext->Context, SPSite->Site, SPList->List, etc. Can a business owner be liable if they provide their service for free? Before you deploy to SharePoint, try to do as much debugging as possible in the Silverlight project, because it is easy to set a breakpoint and hit F5.   When you In Visual Studio, inside your WCF project, add a new XML file titled clientaccesspolicy.xml and paste in the following xml:                                                           

at MS.Internal.XcpImports.CheckThread() at System.Windows.DependencyObject.SetValueInternal(DependencyProperty dp, Object value, Boolean allowReadOnlySet) at System.Windows.Controls.ContentControl.set_Content(Object value) at COMSilverlight.MainPage.OnSiteLoadSuccess(Object sender, ClientRequestSucceededEventArgs e) at Microsoft.SharePoint.Client.ClientRequest.ExecuteQueryGetResponseAsyncCallback(IAsyncResult asyncResult) at System.Net.Browser.BrowserHttpWebRequest.<>c__DisplayClassd.b__b(Object state2) at System.Threading.QueueUserWorkItemCallback.WaitCallback_Context(Object state) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Why deploy them in 2 different ways? Entries (RSS) and Comments (RSS) ASP.net/C# learner, ASP.Net/C# developer Create a free website or blog at WordPress.com. At any rate, thanks for the great answer and the thoughtful discussion. –Jim Reineri Jul 11 '11 at 12:37 add a comment| up vote 0 down vote I did like below

Now, you see the below screen. check over here You'll then be taken to the Directory listing page. Before we deploy into SharePoint, build the project(s) again and ensure all the animations are working. What if you want the benefits of Sandboxed solutions, but you still need custom code that can access external systems, such as invoke a web service?

I am at client side (meaning out of dev environment) and there is some discussion going at if SP2010 + Silverlight can be used as an application development tool which will If this sounds scary - don't worry! Note - this is a huge topic, that I can't do justice in this article, so I recommend reading up on Network Security Restrictions in Silverlight, as well as Making a Service Available http://fullflash.net/unhandled-error/unhandled-error-in-silverlight-2-application-player-xap.html I wanted to add one other pointer here, although it has nothing to do with anonymous access.

They can be found at "C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\14\TEMPLATE\LAYOUTS\ClientBin". Much cleaner approach, huh? The first second it fades out, and the second it fades back in.

Then, drop the web part on the page and you should see you Silverlight Image app!   5) Debugging a Silverlight Web Part in SharePoint Debugging a Silverlight app is pretty straight forward

So, no url and nothing to be changed. You can do this one of two ways. Click on HelloService.svc, and then copy the address URL. This makes debugging with anonymous sites difficult, as you need to either use a web part project, or copy your compile XAP file to the server manually.

Then, we call the Get-Async method to invoke the service, and thereafter our "hs_GetSilverlightStringCompleted" method is called with the result of the call. SharePoint is a trademark of Microsoft Corporation. Since the code is executing on the client side, obviously the data needs to be accessible anonymously. weblink If you get the following error, from Central Admin, services on server, start the "Microsoft SharePoint Foundation Sandboxed Code Service":Error occurred in deployment step 'Activate Features': Cannot start service SPUserCodeV4 on

While the standalone version works well, the same codebase cant be used for Sharepoint. Tell DevPro Connections and Windows IT Pro why Telerik is your choice.