/__browserLink/requestData: Input string was not in a correct format.

[StefanSchoof]

In my Environment BrowserLink does not work (No F12 changes are saved and Unused CSS does not have any effect, a reload from VS triggers does work) OOn the Load of the Page is a Request to /AppName/__browserLink/requestData/9422826f1daa40a9bfdf09f4a252ff83 (the id changes) which returns a 500 Server Error with the Exception:

[FormatException]: Input string was not in a correct format.
   at System.Text.StringBuilder.AppendFormat(IFormatProvider provider, String format, Object[] args)
   at System.String.Format(IFormatProvider provider, String format, Object[] args)
   at Microsoft.VisualStudio.Web.PageInspector.Runtime.MappingData.MappingDataUtilities.GenerateSelectorsForElementsWithTagName(List`1 elements, String selectorFormatString, SelectorGroupFunction[] groupMethods, Int32 startIndex)
   at Microsoft.VisualStudio.Web.PageInspector.Runtime.MappingData.MappingDataUtilities.GenerateSelectorsForElementsWithTagName(List`1 elements, String selectorFormatString, SelectorGroupFunction[] groupMethods, Int32 startIndex)
   at Microsoft.VisualStudio.Web.PageInspector.Runtime.MappingData.MappingDataUtilities.GenerateSelectorsForElementsWithTagName(List`1 elements, String selectorFormatString, SelectorGroupFunction[] groupMethods, Int32 startIndex)
   at Microsoft.VisualStudio.Web.PageInspector.Runtime.MappingData.MappingDataUtilities.GenerateSelectorsWorker(IEnumerable`1 elements, String selectorFormatString, SelectorGroupFunction[] groupMethods)
   at Microsoft.VisualStudio.Web.PageInspector.Runtime.MappingData.MappingDataUtilities.GenerateSelectors(IEnumerable`1 elements)
   at Microsoft.VisualStudio.Web.PageInspector.Runtime.MappingData.MappingDataUtilities.ProcessDataIntoJsonObjects(IEnumerable`1 renderedOutputList)
   at Microsoft.VisualStudio.Web.PageInspector.Runtime.Tracing.RequestDataHttpHandler.System.Web.IHttpHandler.ProcessRequest(HttpContext context)
   at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

I Run Visual Studio 2013 Update 2 RC 2 with Web Essentials2013 2.0 on a Windows Server 2008 R2. I use the IIS (not the IISExpress). It is a ASP.NET MVC 5.1.1 WebApp

[aklefdal]

I have the same problem in an web app that has been upgraded. When creating a new web app everything works fine.

Running VS2013 Update 2 RC with Web Essentials 2013 for Update 2 RC. I use IISExpress (for both projects) on Windows 8.1. They are both ASP.NET MVC/WebAPI 5.1.2.

[StefanSchoof]

If I create a new MVC Web Project I do not get this error. If I create a new Project with the http://visualstudiogallery.msdn.microsoft.com/cc6c9c5f-2846-4822-899f-a6c295cd4f2b AngularStart Template, I get this error. My Other Project also uses Angular.

[madskristensen]

I've sent this bug to the Web Team's testers to find debug. It's a VS issue, not a WE issue so I'm closing the issue, but we can keep commenting here when the testers come back with their findings. Thanks

[JohnMcAvinue]

I'm getting this too. Can you let us know when MS have a resolution for the problem please?

Thanks!

[madskristensen]

@JohnMcAvinue Are you on Update 2 RC?

[JohnMcAvinue]

Hi,

Yes I am - VS 2013 Ultimate RC2. I also upgraded the packages such as SignalR and MVC to the latest.

The solution was originally 2012 but the Upgrade Log said everything went fine. It already had SignalR functionality implemented, I wonder is this conflicting?

One other thing that I've noticed is that I don't have the Sync and Auto-Sync menu options for updating the _references file.

[wwwlicious]

+1 same error on RC2

[rleffler]

+1 same error on RC2

[StefanSchoof]

The error still exist in the final Visual Studio Update 2.

[RredCat]

Same trouble in the final Visual Studio Update 2 (VS Premium).
Any suggestion how to solve it?

[cwchapma]

+1 same error on Visual Studio 2013 Pro Update 2 Final

[marspd]

+1 same problem on mine, project originally was a VS2012, now using VS2013 Pro

[alexdresko]

+1 same problem on mine, project originally was a VS2012, now using VS2013 Pro

[tafs7]

Still getting this error on app running in debug on VS 2013 Premium Update 2 (final, not RC).
Here's the full stack trace:

System.FormatException: Input string was not in a correct format.
   at System.Text.StringBuilder.AppendFormat(IFormatProvider provider, String format, Object[] args)
   at System.String.Format(IFormatProvider provider, String format, Object[] args)
   at System.String.Format(String format, Object arg0)
   at Microsoft.VisualStudio.Web.PageInspector.Runtime.MappingData.MappingDataUtilities.GenerateSelectorsForElementsWithTagName(List`1 elements, String selectorFormatString, SelectorGroupFunction[] groupMethods, Int32 startIndex)
   at Microsoft.VisualStudio.Web.PageInspector.Runtime.MappingData.MappingDataUtilities.GenerateSelectorsWorker(IEnumerable`1 elements, String selectorFormatString, SelectorGroupFunction[] groupMethods)
   at Microsoft.VisualStudio.Web.PageInspector.Runtime.MappingData.MappingDataUtilities.GenerateGlobalScopeSelectors(IEnumerable`1 elements)
   at Microsoft.VisualStudio.Web.PageInspector.Runtime.MappingData.MappingDataUtilities.GenerateSelectors(IEnumerable`1 elements)
   at Microsoft.VisualStudio.Web.PageInspector.Runtime.MappingData.MappingDataUtilities.ProcessDataIntoJsonObjects(IEnumerable`1 renderedOutputList)
   at Microsoft.VisualStudio.Web.PageInspector.Runtime.Tracing.RequestDataHttpHandler.System.Web.IHttpHandler.ProcessRequest(HttpContext context)
   at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)
   at System.Text.StringBuilder.AppendFormat(IFormatProvider provider, String format, Object[] args)
   at System.String.Format(IFormatProvider provider, String format, Object[] args)
   at System.String.Format(String format, Object arg0)
   at Microsoft.VisualStudio.Web.PageInspector.Runtime.MappingData.MappingDataUtilities.GenerateSelectorsForElementsWithTagName(List`1 elements, String selectorFormatString, SelectorGroupFunction[] groupMethods, Int32 startIndex)
   at Microsoft.VisualStudio.Web.PageInspector.Runtime.MappingData.MappingDataUtilities.GenerateSelectorsWorker(IEnumerable`1 elements, String selectorFormatString, SelectorGroupFunction[] groupMethods)
   at Microsoft.VisualStudio.Web.PageInspector.Runtime.MappingData.MappingDataUtilities.GenerateGlobalScopeSelectors(IEnumerable`1 elements)
   at Microsoft.VisualStudio.Web.PageInspector.Runtime.MappingData.MappingDataUtilities.GenerateSelectors(IEnumerable`1 elements)
   at Microsoft.VisualStudio.Web.PageInspector.Runtime.MappingData.MappingDataUtilities.ProcessDataIntoJsonObjects(IEnumerable`1 renderedOutputList)
   at Microsoft.VisualStudio.Web.PageInspector.Runtime.Tracing.RequestDataHttpHandler.System.Web.IHttpHandler.ProcessRequest(HttpContext context)
   at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

[RredCat]

I haven't found how to solve this.
So I created new empty project ASP.NET MVC 5 in VS 2013 with Update 2 and move all my sources there.
Looks like it is only way to handle it.

[StevenWu12]

If you are using asp.net mvc, please add this to your RegisterRoutes function RouteConfig file
public static void RegisterRoutes(RouteCollection routes)
{
routes.IgnoreRoute("{resource}.axd/{_pathInfo}");
#if DEBUG
routes.IgnoreRoute("{_browserlink}", new { browserlink = @".*/arterySignalR/ping" });
#endif
routes.MapRoute(...);
}

that works fine for me.

[aklefdal]

I have found a way to easily reproduce this error.

See https://github.com/aklefdal/TestBrowserLink

[aklefdal]

Reported as a bug in VS: https://connect.microsoft.com/VisualStudio/feedbackdetail/view/980652/adding-data-bind-attribute-with-curly-braces-breaks-browserlink

[madskristensen]

Thanks for submitting the Connect bug.

[StefanSchoof]

The Connect bug has been Closed and marked as Fixed. Hope we that this got into the VS2013 Update 4.

[Bmadhava]

This will solve your problems.
Set appSetting “vs:EnableBrowserLink” to “false ““. This will disable Browser Link.

<add key="vs:EnableBrowserLink" value="false"/>

[amitsbaghel]

thanks a lot buddy It worked.@Bmadhava