asp.net - .NET GridView Updating, e.OldValues is empty -


i using ajax tabcontainer , have asp gridview in each tab bound objectdatasource. objectdatasource returns different objects based on tab selected (tabcontainer autopostback="true"). bind objectdatasource gridview based on tab selected during tabcontainer load in code behind if ispostback because on first load tabcontainer not visible. not bind gridview anywhere else. fields in gridview eval instead of bind because parameters added objectdatasource dinamically.

this bulk update gridview of fields editable. when update gridview, not able see e.oldvalues. if fields in gridview set bind, able retrieve e.newvalues nut e.oldvalues still empty...

does know deal is?

<asp:objectdatasource id="odsequipment" runat="server" typename="equipmentdb" selectmethod="getequipment" sortparametername="sortexpression" updatemethod="updateequipment">     <selectparameters>         --params     </selectparameters>     <updateparameters>         --params     </updateparameters> </asp:objectdatasource>   <asp:tabcontainer id="tcdisciplines" runat="server" cssclass="ajax_tabcontroller" scrollbars="horizontal" autopostback="true"> --tabs , gridviews no properties

code behind:

protected sub tcdisciplines_load(sender object, e eventargs) handles tcdisciplines.load     if ispostback         each discipline in disciplinelist             tcdisciplines.tabs(discipline.id).headertext = discipline.discipline             tcdisciplines.tabs(discipline.id).tabindex = discipline.id              dim gv gridview = trycast(tcdisciplines.tabs(discipline.id).controls(0).findcontrol("gv" + discipline.abbr), gridview)             gv.visible = false              if tcdisciplines.activetabindex = discipline.id                 gv.visible = true                  'set properties             end if         next     end if end sub

found little tutorial on msdn, http://msdn.microsoft.com/en-us/library/aa992036.aspx#y3473 work-around helped me. used session instead list of rows.


Comments

Post a Comment

Popular posts from this blog

monitor web browser programmatically in Android? -

i've got tricky question here. need users make payment bank (namely barclaycard) in uk. so, have https url , add parameters (such amount pay, order reference, etc) url, start http connection intent.actionview, redirect user browser can enter credit card details on bank's webpage , make payment our account successfully. far ? the code use below (i changed values privacy reasons) problem is, need app when user has completed/failed/cancelled payment. barclaycardautomatically redirects particular url when payment has succeeded, 1 if failed. there no way of knowing when barclaycard payment has succeeded go android app somehow ? button cardbutton = (button) findviewbyid(r.id.card_button); cardbutton.setonclicklistener(new view.onclicklistener() { @override public void onclick(view arg0) { string prehashstring = new string(); string prohashstring = new string(); string shapassphrase = new string(); shapassphrase = "gsvth£h70zkh...
Read more

Shrink a YouTube video to responsive width -

i have youtube video embedded on our website , when shrink screen tablet or phone sizes stops shrinking @ around 560px in width. standard youtube videos or there can add code make go smaller? you can make youtube videos responsive css. wrap iframe in div class of "videowrapper" , apply following styles: .videowrapper { float: none; clear: both; width: 100%; position: relative; padding-bottom: 56.25%; padding-top: 25px; height: 0; } .videowrapper iframe { position: absolute; top: 0; left: 0; width: 100%; height: 100%; } the .videowrapper div should inside responsive element. padding on .videowrapper necessary keep video collapsing. may have tweak numbers depending upon layout.
Read more

wpf - PdfWriter.GetInstance throws System.NullReferenceException -

i'm trying create pdf document using itextsharp 5.3.4 using following document document = new document(); filestream stm = new filestream(filename, filemode.create); pdfwriter writer = pdfwriter.getinstance(document, stm); i'm getting system.nullreferenceexception following stack trace: system.nullreferenceexception occurred hresult=-2147467261 message=la référence d'objet n'est pas définie à une instance d'un objet. source=itextsharp stacktrace: à itextsharp.text.version.getinstance() innerexception: i've verified neither document nor stm null, , if select "continue" in vs12 document created - exception thrown. updated itextsharp 5.4.0 , it's still occurring. can't find information on anywhere - got ideas? make sure not catching exceptions. nullreferenceexception can 1 caught , handled inside itextsharp, don't care it. fact can continue supports theory. change following setting verify: debug -> exceptions ...
Read more