error 3 the validatexaml task failed unexpectedly
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DevOps' [May 2013] My DG Session on ‘The Cloud' [June 2012] Silverlight UK User Group – Next steps? http://blog.mark-mann.co.uk/index.php/2010/07/error-of-the-day-validatexaml-error/ Silverlight UK User Group [March 2012] Slides Silverlight UK User Group http://omegacoder.com/?p=563 [March 2012] Agenda Silverlight UK User Group [October 2011] Slides Silverlight UK User Group [October 2011] Agenda Silverlight UK User Group – Summer 2011 Update TagsASP.NET Backups Bing Maps Branding C# Dashboards DeepZoom Design DGUK Disk Management Expression Blend Expression Suite GIS Globalisation HTTPS error 3 Live Messenger MEF Microsoft Mesh MVVM Ordnance Survey PhotoSynth PRISM RIA Services Security Silverlight Silverlight Surgery Silverlight UK User Group Sketchflow Storage TDD Team Foundation Server TescoAPI VHD Virtual Disks Virtualisation Virtual PC Visualisation Visual Studio 2008 WCF Web Services Windows8 Windows Phone 7 WPF XAML XNA Recent Tweets Previous Post Next Post Error of the error 3 the day: ValidateXaml Error July 30, 2010 at 9:27 pm mark Comments off A particular build/compile error in my Silverlight project has been plaguing me today. Unfortunately while changing a million things in a Xaml view, I managed to stuff it up chronic. So much so, that it was a nightmare to trace back to the root cause. Funny that… it smacks to me of a similar time I had Xaml compilation error 60 but this is different. Problem: Compiling my Silverlight 3 application prompted the following error. Error 1: The "ValidateXaml" task failed unexpectedly.Could be a number of things, but firstly check if you had a CheckBox defined in your Xaml, and that you changed something on it. If you do, then it’s most likely the culprit and read on… Solution: In my particular case, CheckBox was incorrectly bound for it’s checked/ticked state.
Strings with Articles and Prepositions » Visual Studio: Downloaded Assembly Gives "ValidateXaml" task failed unexpectedly Error or FileLoadException May 2 2010 This is a How To Fix when you have downloaded a foreign (to your computer) assembly which can occur when dealing with Silverlight assemblies but it applies to all assemblies downloaded. Here is more of the errors: error MSB4018: The "ValidateXaml" task failed unexpectedly. error MSB4018: System.IO.FileLoadException: Could not load file or assembly ‘… \ImageSequence.dll' or one of its dependencies. Operation is not supported. (Exception from HRESULT: 0x80131515) System.NotSupportedException: An attempt was made to load an assembly from a network location which would have caused the assembly to be sandboxed in previous versions of the .NET Framework. This release of the .NET Framework does not enable CAS policy by default, so this load may be dangerous. If this load is not intended to sandbox the assembly, please enable the loadFromRemoteSources switch. See http://go.microsoft.com/fwlink/?LinkId=155569 for more information. The situation is that the OS has identified that the assembly was not made on the computer and has been blocked. This is usually the case with downloaded assemblies and is a security feature. Steps To Resolve In Visual Studio in the Solution Explorer Window right click on the project which contains the dll and select Open Folder in Windows Explorer. In Windows Explorer find the dll in question and right click and select Properties. Select Unblock and select OK. (As shown below) Rebuild. Once you see the properties and this text its more self explanatory than the Visual Studio error. This file came from another computer and might be blocked to help protect this computer. Why? Remember that .Net is an Xcopy install. Meaning that any .Net application can be installed by simply copying over the assemblies. The OS recognizes the assemblies and categorizes them for running. When one copies code over and tries to manipulate it in Visual Studio the OS blocks for safety reasons and it subsequently fails during a Visual Studio build. Tags: .Net, Silverlight, Visual Studio This entry was posted on May 2, 2010, 9:38 am and is filed under Errors, How To, Silverlight. You can follow any responses to this entry through RSS 2.0. You can leave a response, or trackback from your own site. 1 Comment (and one trackback) Pingback: Tweets that mention Visual Studio: Downloaded Assembly Gives "ValidateXaml" task failed unexpectedly Error or FileLoadException at OmegaMan’s Musings -- Topsy