postback

问题 I have setup a DataGrid with a number of columns and a checkbox and column at the end of the row. I am also changing the layout of the datagrid on the OnItemCreated event which changes the layout of the datagrid by expanding the rows with the "Rowspan" attribute and remove the extra columns and controls where they are no longer required. The original datagrid layout was setup like this: ___________________________________________ | 1 | Employee Name | 01/08/10 |[] |[SAVE]| | 1 | Employee Name

问题 So I've got this button: <asp:Button runat="server" ID="btnSubmit" meta:resourcekey="btnSubmit" CausesValidation="true" OnClick="btnSubmit_Click" /> meta:resourcekey is for Localization Resources, doesn't concern us here - as we can see it has got an OnClick-Method and causes Validation. That works fine, too, but I'd like to disable that button after the user clicked it so he/she can't click it multiple times before the PostBack succeeds, so here's what I did in Page_Load : btnSubmit

问题 Can you help me make sense of all the different ways to communicate from browser to client in ASP.NET? I have made this a community wiki so feel free to edit my post to improve it. Specifically, I'm trying to understand in which scenario to use each one by listing how each works. I'm a little fuzzy on UpdatePanel vs CallBack (with ViewState): I know UpdatePanel always returns HTML while CallBack can return JSON. Any other major differences? ...and CallBack (without ViewState) vs WebMethod.

问题 Can you help me make sense of all the different ways to communicate from browser to client in ASP.NET? I have made this a community wiki so feel free to edit my post to improve it. Specifically, I'm trying to understand in which scenario to use each one by listing how each works. I'm a little fuzzy on UpdatePanel vs CallBack (with ViewState): I know UpdatePanel always returns HTML while CallBack can return JSON. Any other major differences? ...and CallBack (without ViewState) vs WebMethod.

问题 I have common functions and I collapse it on CommonFunctions.js in Scripts folder. I include it on my master page and use it on my pages. When I do any post back on a page, my function doesn't work. My CommonFunctions.js : $(function () { gf(); if (Sys.WebForms.PageRequestManager.getInstance().get_isInAsyncPostBack()) { gf(); } function gf(){ $('.AddNewGeneralPanel').click(function () { if ($(this).find('.AddNewGeneralPanelStyle').text() == "") { $(this).find('.AddNewGeneralPanelStyle').text(

问题 So I get the exception Invalid postback or callback argument. Event validation is enabled using in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation. With the

问题 Edit: The site is on Windows Server 2003, hence cannot be upgraded to .NET framework 4.5. Our web site is serving ASP.NET ON .NET 4. When using IE 11 the auto postback stopped working with the error "_doPostBack is undefined". It's very likely can be fixed with some modification to the browser definition file, which I don't know how yet. Microsoft suggests feature detection (preferred), or changing the browser definition file. http://msdn.microsoft.com/en-us/library/IE/hh869299%28v=vs.85%29

问题 Could I get some confirmations from the community that I'm not going mad, and that the life cycle of a page during post back is in deed in a different order to when the page is initally requested. If this is the case pointers towards references/articles outlining the order would be greatly appreciated. (A postback equivalent of the page life cycle image would be great) 回答1: The behaviour is slightly different but the order is the same. In this respect "Postback" is essentially a state flag on

问题 I am facing a problem on IE10 with ASP.NET controls that requires JavaScript post back[like, link button]. It is properly working on the IE9 version as well as on IE10 Compatibility mode. But on the IE10 standard mode, it is giving below error. SCRIPT5009: '__doPostBack' is undefined [I have created a demo project with a simple asp:link button that redirects to another page.] Tried the solution, but didn't work for me Can anyone suggest fix for this? 回答1: There is apparently a bug in the

问题 I am facing a problem on IE10 with ASP.NET controls that requires JavaScript post back[like, link button]. It is properly working on the IE9 version as well as on IE10 Compatibility mode. But on the IE10 standard mode, it is giving below error. SCRIPT5009: '__doPostBack' is undefined [I have created a demo project with a simple asp:link button that redirects to another page.] Tried the solution, but didn't work for me Can anyone suggest fix for this? 回答1: There is apparently a bug in the