Server Error in '/' Application. A potentially dangerous Request.QueryString value was detected from the client (text="<span-style"). Description: ASP.NET has detected data in the request that is potentially dangerous because it might include HTML markup or script. The data might represent an attempt to compromise the security of your application, such as a cross-site scripting attack. If this type of input is appropriate in your application, you can include code in a web page to explicitly allow it. For more information, see http://go.microsoft.com/fwlink/?LinkID=212874. Exception Details: System.Web.HttpRequestValidationException: A potentially dangerous Request.QueryString value was detected from the client (text="<span-style"). Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Stack Trace: [HttpRequestValidationException (0x80004005): A potentially dangerous Request.QueryString value was detected from the client (text="<span-style").] System.Web.HttpRequest.ValidateString(String value, String collectionKey, RequestValidationSource requestCollection) +11778768 System.Web.HttpRequest.ValidateHttpValueCollection(HttpValueCollection collection, RequestValidationSource requestCollection) +204 System.Web.HttpRequest.get_QueryString() +71 System.Web.UI.Page.DeterminePostBackMode() +87 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +9318 System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +355 System.Web.UI.Page.ProcessRequest() +79 System.Web.UI.Page.ProcessRequest(HttpContext context) +74 System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +542 System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step) +75 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +93 Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4330.0