c# - Asp.Net Viewstate exceeds max request length -


i'm stuck problem causes webapplication crash on regular bases. client (browser) http status code 500 after making (more 1) requests server. turned on iis failed request tracing , discoverd, request exceeded max request limit:

maximum request length exceeded

i looked @ hidden __viewstate field , found, contains information expected , cryptic (probably base64 encoded) serialized object 49,500 characters. didn't know, why large , checked session , viewstate objectes in code behind. nothing suspicious.

since i'm displaying 2 asp.net charts , large data table (5k rows , aprox 20 cols) went web.config file , increased request limit to

</system.web>   <httpruntime maxrequestlength="4194304"/>     </system.web>

that kinda successfull, meaning server survived 1 more request bevore crashing outofmemoryexception, claiming there no more memory available.

by now, i'm pretty sure there (and mean tons) unwanted, unneccesary, unused objects stored. (nice way of describing memory leak ;) ).

but @ point, lost. there way can viewstate before being serialized , check, kind of objects referenced there? can clear/delete/flush viewstate/session/whatever responsible in order have clean serialized viewstate not exceed default limit?

on server side : should code can take care of response time can follow these following things

1.try avoid viewstate : if don’t need viewstate disable view state on page level. there many levels of disabling of viewstate

control level : can disable viewstate specific control

<asp:textbox id="txtcustomerid" runat="server"  enableviewstate="false" />

page level : can disable view state of whole page

<%@ page title="customer" language="c#" enableviewstate="false" %>

directory level : disable view state on directory level, add location tag under configuration tag in web.config, in following example disabling viewstate docs directory.

<location path="~/docs">      <system.web>           <pages enableviewstate="false"></pages>      </system.web> </location>

website level : disabling viewstate on website level, set enableviewstate property false of pages tag under system.web tag in web.config

<pages enableviewstate="false"></pages>

used : http://ianswerable.com/asp-net-performance-best-practice/


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