c# - ASP.NET page is blocking in code behind -

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an asp.net page blocking inside code behind, when accessed second time within same session. 2 calls within same session sort of serialized, shouldn't.

it not disable session state page:

    <%@ page    enablesessionstate="false" %>     ...     <div runat="server" id="lblmsg"></div>

code behind part:

    using system;      namespace sysweb     {         public partial class blocktest2page : system.web.ui.page         {             protected void page_load(object sender, system.eventargs e)             {                 // show time                 this.lblmsg.innerhtml += datetime.now.tostring() + "<br />";                 system.threading.thread.sleep(4000);                 this.lblmsg.innerhtml += datetime.now.tostring() + "<br />";             }         }     }

when open 2 tabs in browser (tested in firefox , chrome), , call same page same url, times shown on each page show 1 call blocked until first done completely. start/end times not overlap, if start both calls @ same time.

why? how can changed?

when using third browser different session, nothing blocked, start/end-times shown overlap intended. using different ?-querystring-param allows concurrent execution in same browser. how can asp.net configured execute such calls parallel, , not sequential?


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