Operation is not valid due to the current state of the object

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.

[java]

[InvalidOperationException: Operation is not valid due to the current state of the object.]

Microsoft.SharePoint.<wbr />WebControls.SPControl.<wbr />SPWebEnsureSPControl(<wbr />HttpContext context)

Microsoft.SharePoint.<wbr />Utilities.SPUtility.<wbr />DetermineLayoutsUrl(SPWeb overrideWeb, HttpContext context, Boolean includeLCID, Boolean doNotInitWeb)

Microsoft.SharePoint.<wbr />Utilities.SPUtility.<wbr />DetermineRedirectUrl(String urlProposed, SPRedirectFlags flags, HttpContext context, SPWeb overrideWeb, String queryString, String& urlRedirect)

Microsoft.SharePoint.<wbr />Utilities.SPUtility.Redirect(<wbr />String url, SPRedirectFlags flags, HttpContext context, String queryString)

Microsoft.SharePoint.<wbr />Utilities.SPUtility.<wbr />HandleAccessDenied(HttpContext context)

Microsoft.SharePoint.<wbr />IdentityModel.<wbr />SPFederationAuthenticationModu<wbr />le.OnEndRequest(Object sender, EventArgs args)

System.Web.<wbr />SyncEventExecutionStep.System.<wbr />Web.HttpApplication.<wbr />IExecutionStep.Execute()

System.Web.HttpApplication.<wbr />ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

[/java]

Solution : Try adding the following setting in your web.config's <appsettings> block. in this block you are maximizing the MaxHttpCollection values this will override the defaults set by .net Framework. you can change the value accordingly as per your form needs.

[java]

<appSettings>
<add key="aspnet:MaxHttpCollectionKeys" value="2001" />
</appSettings>

[/java]

 

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