asp.net - Page OnLoad not fireing changing query string -


i have problem onload event not fireing when navigate page , change query string. if postback called, changing query string ones more onload gets called.

here how try. navigate page onload fires -> change query string page updates (all bound elements updated) onload not fire -> postback using button onload fires -> change query string onload fires.

i try explain in more detail.

the system has log in window when log in navigate other aspx page sending 2 query string messages last query string number (page.aspx?key=text82&key2=2010). when page first time pageload event gets called , fine, if in browser change key2 2011 , press enter pageload not called bound elements updated (grivview etc..). if postback using button pageload gets called. if change 2011 2010 , press enter pageload called.

i try firefox pageload called every time.

i tired write test website not same problem, found out in ie 8 changing query string same number , pressing enter pageload not called. doing in firefox makes postback fire. here test code

<%@ page title="home page" language="c#" masterpagefile="~/site.master"     autoeventwireup="true" codefile="default.aspx.cs" inherits="_default" %>  <asp:content id="headercontent" runat="server" contentplaceholderid="headcontent"> </asp:content> <asp:content id="bodycontent" runat="server" contentplaceholderid="maincontent"> <h2>     welcome asp.net! </h2> <p>     <asp:button id="button1" runat="server" text="button" />     <asp:hyperlink id="hyperlink1" runat="server" navigateurl="~/default2.aspx?t=tt&   tttttt=2010">hyperlink</asp:hyperlink> </p> <p>     can find <a href="http://go.microsoft.com/fwlink/?linkid=152368&amp;clcid=0x409"         title="msdn asp.net docs">documentation on asp.net @ msdn</a>. </p> </asp:content>

navigates to

<%@ page language="c#" autoeventwireup="true" masterpagefile="~/site.master" codefile="default2.aspx.cs" inherits="default2" %>  <asp:content id="bodycontent" runat="server" contentplaceholderid="maincontent"> <asp:label id="label1" runat="server" text="label"></asp:label><asp:button id="button1"     runat="server" text="button" /> </asp:content>

onload event default2.aspx

protected void page_load(object sender, eventargs e) {     label1.text += "called " + datetime.now.tostring(); }

i found out problem. looks browser cache giving me problem. press f12 , cleared cache, works.


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