operation is not valid due to the current state of the object-ASP. Net Error

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Is the one of the  error in ASP .net Using Forms and fields it will happen in the  processing any events.

     To Use Maximum Number Of Fields or Big Data using the Forms get this Error.




 



        To Resolve this Error Using Web.Config file.

          <appSettings>
               <add key="aspnet:MaxHttpCollectionKeys" value="4000" />
     </appSettings>

Note:

Default aspnet:MaxHttpCollectionKeys value is 1000


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