IIS7.0 and IIS7.5 http error 404.15-not the Found request filtering module is configured to reject requests that contain too long query strings.

Do a lot of attempts are not, later colleagues come up with the method: the way to submit the form to post, it is OK. There are too many parameters passed in the URL,

Get is the way to send data in the Address bar in the form of clear text, and transmit less data.
Post is not, and post can pass more data than get, as if it were unrestricted.

Make the following changes as follows:

@using (Html.BeginForm ("", "", FormMethod.Post, new {id = "form"})

IIS7.0 and IIS7.5 http error 404.15-not the Found request filtering module is configured to reject requests that contain too long query strings.