maximum value for aspnet:MaxHttpCollectionKeys
asp.net
Solution
You can see the implementation of MaxHttpCollectionKeys in the aspnetwebstack source on GitHub.
From the implementation it seems like these are the limits:
- MaxHttpCollectionKeys is an int, so it could have a max value of an integer (int.MaxValue: 2,147,483,647)
- Minimum value is 1
- Default value is 1000
This MSDN page recommends to not set MaxHttpCollectionKeys to a value too large as that would pose a security risk.
Problem
I have a form that posts pretty big data and i get this error ``` [InvalidOperationException: Operation is not valid due to the current state of the object.] System.Web.HttpValueCollection.ThrowIfMaxHttpCollectionKeysExceeded() +2419334 System.Web.HttpValueCollection.FillFromEncodedBytes(Byte[] bytes, Encoding encoding) +58 System.Web.HttpRequest.FillInFormCollection() +159 [HttpException (0x80004005): The URL-encoded form data is not valid.] System.Web.HttpRequest.FillInFormCollection() +217 System.Web.HttpRequest.get_Form() +104 System.Web.HttpRequest.get_HasForm() +9035903 System.Web.UI.Page.GetCollectionBasedOnMethod(Boolean dontReturnNull) +97 System.Web.UI.Page.DeterminePostBackMode() +69 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +135 ``` To resolve this I got this solution from StackOverflow itself ``` <appSettings> <add key="aspnet:MaxHttpCollectionKeys" value="2000" /> </appSettings> ``` Now I would like to know the maximum valid value that could be set for `aspnet:MaxHttpCollectionKeys`. Is there any problem in setting this key to its max value?