The string was not recognized as a valid DateTime.

[Reza]

hi there,

I am currently get this unhandled exception in first time of a page load (onetime for application start) and after reloading the same page, I dont get this exception and everythings is OK . I'm not use datetime conversion in my login.aspx page. this problem while cause when i use telerik control. it's attractive this exception in every page that use Telerik Rad Script Manager and stop rendering page.

i will gratefull everyone that help me for solve  this problem.

Server Error in '/' Application.

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The string was not recognized as a valid DateTime. There is an unknown word starting at index 20.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.FormatException: The string was not recognized as a valid DateTime. There is an unknown word starting at index 20.

Source Error:

Line 231: <div class="login" id="loginPanel" runat="server"> Line 232: <%--<div id="login_trans"></div>--%> Line 233: <telerik:RadScriptManager ID="RadScriptManager1" runat="server"> Line 234: </telerik:RadScriptManager> Line 235: <telerik:RadAjaxManager ID="radajaxmanager1" runat="server">

Source File: d:\HSE_NIGC_TFS\HSE_NIGC\DAP.Web.HSE\DAP.Web.HSE.WebUI\Login.aspx    Line: 233

Stack Trace:

[FormatException: The string was not recognized as a valid DateTime. There is an unknown word starting at index 20.] System.DateTimeParse.Parse(String s, DateTimeFormatInfo dtfi, DateTimeStyles styles) +3211050 System.DateTime.Parse(String s, IFormatProvider provider) +28 System.Windows.Forms.TypeLibraryTimeStampAttribute..ctor(String timestamp) +38 System.Reflection.CustomAttribute._CreateCaObject(RuntimeModule pModule, IRuntimeMethodInfo pCtor, Byte** ppBlob, Byte* pEndBlob, Int32* pcNamedArgs) +0 System.Reflection.CustomAttribute.CreateCaObject(RuntimeModule module, IRuntimeMethodInfo ctor, IntPtr& blob, IntPtr blobEnd, Int32& namedArgs) +46 System.Reflection.CustomAttribute.GetCustomAttributes(RuntimeModule decoratedModule, Int32 decoratedMetadataToken, Int32 pcaCount, RuntimeType attributeFilterType, Boolean mustBeInheritable, IList derivedAttributes, Boolean isDecoratedTargetSecurityTransparent) +529 System.Reflection.CustomAttribute.GetCustomAttributes(RuntimeAssembly assembly, RuntimeType caType) +103 System.Reflection.RuntimeAssembly.GetCustomAttributes(Boolean inherit) +33 System.Web.UI.AssemblyCache.GetAjaxFrameworkAssemblyAttribute(Assembly assembly) +76 System.Web.UI.ScriptManager.get_DefaultAjaxFrameworkAssembly() +388 System.Web.UI.ScriptManager..ctor() +26 Telerik.Web.UI.RadScriptManager..ctor() +68 ASP.login_aspx.__BuildControlRadScriptManager1() in d:\HSE_NIGC_TFS\HSE_NIGC\DAP.Web.HSE\DAP.Web.HSE.WebUI\Login.aspx:233 ASP.login_aspx.__BuildControlloginPanel() in d:\HSE_NIGC_TFS\HSE_NIGC\DAP.Web.HSE\DAP.Web.HSE.WebUI\Login.aspx:231 ASP.login_aspx.__BuildControlform1() in d:\HSE_NIGC_TFS\HSE_NIGC\DAP.Web.HSE\DAP.Web.HSE.WebUI\Login.aspx:61 ASP.login_aspx.__BuildControlTree(login_aspx __ctrl) in d:\HSE_NIGC_TFS\HSE_NIGC\DAP.Web.HSE\DAP.Web.HSE.WebUI\Login.aspx:1 ASP.login_aspx.FrameworkInitialize() in c:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\root\c7868279\54f6c8a3\App_Web_login.aspx.cdcab7d2.3njsl4kc.0.cs:0 System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +54 System.Web.UI.Page.ProcessRequest() +78 System.Web.UI.Page.ProcessRequestWithNoAssert(HttpContext context) +21 System.Web.UI.Page.ProcessRequest(HttpContext context) +49 ASP.login_aspx.ProcessRequest(HttpContext context) in c:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\root\c7868279\54f6c8a3\App_Web_login.aspx.cdcab7d2.3njsl4kc.0.cs:0 System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +100 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +75

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Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.1