Server Error in '/objects' Application.

A potentially dangerous Request.QueryString value was detected from the client (languageid="<!DOCTYPE html PUBLI...").

Description: Request Validation has detected a potentially dangerous client input value, and processing of the request has been aborted. This value may indicate an attempt to compromise the security of your application, such as a cross-site scripting attack. You can disable request validation by setting validateRequest=false in the Page directive or in the configuration section. However, it is strongly recommended that your application explicitly check all inputs in this case.

Exception Details: System.Web.HttpRequestValidationException: A potentially dangerous Request.QueryString value was detected from the client (languageid="<!DOCTYPE html PUBLI...").

Source Error: 


[No relevant source lines]

Source File: c:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\objects\3b98da41\b8963310\App_Web_w92kufca.23.cs    Line: 0

Stack Trace: 


[HttpRequestValidationException (0x80004005): A potentially dangerous Request.QueryString value was detected from the client (languageid="<!DOCTYPE html PUBLI...").]
   System.Web.HttpRequest.ValidateString(String s, String valueName, String collectionName) +8721962
   System.Web.HttpRequest.ValidateNameValueCollection(NameValueCollection nvc, String collectionName) +111
   System.Web.HttpRequest.get_QueryString() +129
   MyPhotoFun.Web.Objects.GetVendorText.Page_Load(Object sender, EventArgs e) +31
   System.Web.UI.Control.OnLoad(EventArgs e) +99
   System.Web.UI.Control.LoadRecursive() +50
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +6785
   System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +242
   System.Web.UI.Page.ProcessRequest() +80
   System.Web.UI.Page.ProcessRequestWithNoAssert(HttpContext context) +21
   System.Web.UI.Page.ProcessRequest(HttpContext context) +49
   ASP.getvendortext_aspx.ProcessRequest(HttpContext context) in c:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\objects\3b98da41\b8963310\App_Web_w92kufca.23.cs:0
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +181
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +75

Version Information: Microsoft .NET Framework Version:2.0.50727.3607; ASP.NET Version:2.0.50727.3614