Server Error in '/' Application.

Key cannot be null.
Parameter name: key

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.ArgumentNullException: Key cannot be null.
Parameter name: key

Source Error:

The source code that generated this unhandled exception can only be shown when compiled in debug mode. To enable this, please follow one of the below steps, then request the URL:

1. Add a "Debug=true" directive at the top of the file that generated the error. Example:

  <%@ Page Language="C#" Debug="true" %>

or:

2) Add the following section to the configuration file of your application:

<configuration>
   <system.web>
       <compilation debug="true"/>
   </system.web>
</configuration>

Note that this second technique will cause all files within a given application to be compiled in debug mode. The first technique will cause only that particular file to be compiled in debug mode.

Important: Running applications in debug mode does incur a memory/performance overhead. You should make sure that an application has debugging disabled before deploying into production scenario.

Stack Trace:


[ArgumentNullException: Key cannot be null.
Parameter name: key]
   System.Collections.Hashtable.Insert(Object key, Object nvalue, Boolean add) +13133916
   System.Collections.Hashtable.Add(Object key, Object value) +16
   System.Collections.Specialized.OrderedDictionary.Add(Object key, Object value) +99
   WagamiDream.EF.WebPages.FormFieldContainer.Add(String name, Object value, Boolean editable, String contentType) in D:\Projects\YO-KI\wdCommerce\src\WagamiDream.EF.WebPages\WebPages\ContactPage.cs:125
   WagamiDream.EF.WebPages.FormFieldContainer..ctor(WebPage page, NameValueCollection coll) in D:\Projects\YO-KI\wdCommerce\src\WagamiDream.EF.WebPages\WebPages\ContactPage.cs:114
   WagamiDream.EF.WebPages.ContactPage.ExecutePageHierarchy() in D:\Projects\YO-KI\wdCommerce\src\WagamiDream.EF.WebPages\WebPages\ContactPage.cs:48
   System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) +90
   System.Web.WebPages.<>c__DisplayClass40_0.<RenderPageCore>b__0(TextWriter writer) +232
   System.Web.WebPages.HelperResult.WriteTo(TextWriter writer) +10
   System.Web.WebPages.WebPageBase.Write(HelperResult result) +80
   ASP._Page_Secure_Contact_Product_cshtml.Execute() +7009
   System.Web.WebPages.WebPageBase.ExecutePageHierarchy() +197
   System.Web.WebPages.WebPage.ExecutePageHierarchy(IEnumerable`1 executors) +68
   System.Web.WebPages.WebPage.ExecutePageHierarchy() +114
   WagamiDream.EF.WebPages.WdWebPage.ExecutePageHierarchy() in D:\Projects\YO-KI\wdCommerce\src\WagamiDream.EF.WebPages\WebPages\WdWebPage.cs:281
   System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) +78
   System.Web.WebPages.WebPageHttpHandler.ProcessRequestInternal(HttpContextBase httpContext) +115


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4690.0