asp.net-ajax

After deploying a ASP.NET WebForms application to a production server some of the ajax calls has stopped working for me. After some debugging I found out that the following statement (in the internal client-method WebForm_DoCallback) was causing the problem: xmlRequest.open("POST", action, true); The problem seemed to be that the action-variable was empty so after checking the rendered html I found out that the form-tag rendered on the production server looks like: <form method="post" action="" id="Form1"> However, on my developer machine I get the following: <form method="post" action=

I'm using Accordian control of ajax toolkit. I'm getting the following error: Microsoft JScript runtime error: Sys.ArgumentException: Value must not be null for Controls and Behaviors. Parameter name: element Andy S. I just ran into this problem as a result of having commented out a block of old HTML ( <!-- ... --> ) which contained textboxes and maskededitextenders. When I removed that HTML the error stopped occurring. There could be a whole host of problems associated with this error. Not much to go on, but here are some possibilities Check the visibility settings of the Accordion.

I have three updatepanels in hierarchy: UpdatePanel1--Root UpdatePanelChild1 UpdatePanelChild2 Can I update a control in updatePanel1 on an event of the updatepanel2? I'm not a big fan of every updatepanel updating all the time - that seems to undo the locality update panels get you. Another option is to specifically call the .Update() method of the OTHER update panel in your code. For example, suppose you have a button on UppdatePanelChild1 that does some processing and modifies a control in UpdatePanel2: textBoxInsideUpdatePanel2.Text = "Updated!"; UpdatePanel2.Update(); Yes, the easiest way

<asp:ModalPopupExtender ID="MPE_EditGroup" runat="server" TargetControlID="btnShowPopup" PopupControlID="pnlpopup" CancelControlID="btnCancel" /> <asp:ToolkitScriptManager ID="ScriptManager1" runat="server" /> <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional" ChildrenAsTriggers="false"> <ContentTemplate> <asp:Panel ID="pnlpopup" runat="server"> <asp:ListBox ID="lst_allmembers" DataValueField="FirstName" runat="server" /> <asp:Button ID="btn_Add" runat="server" Text="Add" OnClick="btn_Add_Click" /><asp:ListBox ID="lst_grpmembers" runat="server" /> <asp:Button ID="btn

what is the main purpose of UpdatePanel in ASP.Net ? And what is the of Triggers tag in UpdatePanel ? An UpdatePanel is a set of components that you want to be affected by ajaxified updates in your webapplication. The triggers are what causes the panel of components to update. If you want to know more about asp.net ajax and update panel please read How Ajax for ASP.NET updatepanels work . 来源： https://stackoverflow.com/questions/2904231/what-is-the-updatepanel

In an ASP.net AJAX project (WebForms), I have an UpdatePanel, and in UpdatePanel i have multiple nested Controls with UpdatePanels, basically i have control trees. The Parent Control is huge and very important part of the site i cannot touch it,(and also it is reused on many places),the UpdatePanel shoud remain on current position. The child controls in the update panel have functionality's wich are separated from each other(also they are separated with UpdatePanel),to be able to refresh just a piece from a control. Basically on Page_Load() i have code wich fullfill every Child control with

Let me start of by saying that I am inexperienced with JavaScript. Here is what I want to do. When the user clicks "Show Details" on a row of data, they get a pop-up (modal?) window that has some data generated from another action within the MVC application. Where can I find an example of implementing something like this? Also, when a user clicks "Approve" on either this pop-up or on the original data row another pop-up will display with a form a person needs to fill out. Any direction will be greatly appreciated. First of all, you will need a DIV somewhere on your page - let say give it an id

I have a page that contains many user controls, each of which uses Ajax. When I load this page, under certain conditions, I want to do a response.redirect; however response.redirect statement is being trapped by Ajax code and never happens. How do I do a response.redirect from a page that contains Ajax controls? Thanks.... Instead of using Response.Redirect, you can use Javascript to redirect. window.location = "[url to redirect]"; add this to your web.config: <httpModules> <add name="ScriptModule" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=1.0.61025.0, Culture