The label is converted into a span element and the html elements, like span or div, do not have ViewState. Neither the text or html of these is sent server side like form elements. Form elements that are posted are the input elements as well as hidden fields. ASP.net maintains ViewState using hidden field and … Read more
There’s a couple of things you can do to intercept a postback on the client. The __doPostBack function looks like this: function __doPostBack(eventTarget, eventArgument) { if (!theForm.onsubmit || (theForm.onsubmit() != false)) { theForm.__EVENTTARGET.value = eventTarget; theForm.__EVENTARGUMENT.value = eventArgument; theForm.submit(); } } Notice that it calls “theForm.onsubmit()” before actually doing the postback. This means that if … Read more
The page lifecycle does the following (plus other steps irrelevant to your question): OnInit Populate controls from ViewState (during postback) Set the selected values (during postback) Page_Load You need to have ViewState enabled so it can populate the list before it “selects” the item. In this case, make sure you don’t repopulate in Page_Load and … Read more
This is a known problem with ASP.NET – for some reason ASP.NET won’t update a checkbox on postback if it was disabled during page load and not checked for postback. I don’t know exactly why that is though – if you make the checkbox unselected by default and select it, the value is changed on … Read more
ASPX: <input type=”hidden” id=”_ispostback” value=”<%=Page.IsPostBack.ToString()%>” /> Client-side Script: function isPostBack() { //function to check if page is a postback-ed one return document.getElementById(‘_ispostback’).value == ‘True’; } PS: I have not tested it but I’ve done somthing similar before and it works.
You could set the DefaultButton on the Form or a Panel. This way you have full control what happens. Set UseSubmitBehavior=”False” on your Buttons. This disables the “AutoPostback” on Enter. I would prefer the second if i wanted to prevent Postbacks on Enter completely. are you using jQuery? if so: $(document).keypress(function(e) { if(e.keyCode === 13) … Read more
There is apparently a bug in the browser definition files that shipped with .NET 2.0 and .NET 4. The definition files do not cater for IE10 as a browser version and hence defaults to a default definition which doesn’t support JavaScript. Scott Hanselman has a very detailed writeup about this issue here: http://www.hanselman.com/blog/BugAndFixASPNETFailsToDetectIE10CausingDoPostBackIsUndefinedJavaScriptErrorOrMaintainFF5ScrollbarPosition.aspx Scott proposes … Read more
use updateprogress of tool kit :hope this will help you <asp:updatepanel id=”ResultsUpdatePanel” runat=”server”> <contenttemplate> <div style=”text-align:center;”> <asp:updateprogress id=”UpdateProgress1″ runat=”server” associatedupdatepanelid=”ResultsUpdatePanel” dynamiclayout=”true”> <progresstemplate> <img src=”https://stackoverflow.com/questions/2813590/support/images/loading.gif”> </progresstemplate> </asp:updateprogress> </div> //your control code </contenttemplate> </asp:updatepanel>
Try this: <asp:Button runat=”server” ID=”btnUserDelete” Text=”Delete” CssClass=”GreenLightButton” OnClick=”BtnUserDelete_Click” OnClientClick=”if ( ! UserDeleteConfirmation()) return false;” meta:resourcekey=”BtnUserDeleteResource1″ /> This way the “return” is only executed when the user clicks “cancel” and not when he clicks “ok”. By the way, you can shorten the UserDeleteConfirmation function to: function UserDeleteConfirmation() { return confirm(“Are you sure you want to delete … Read more
This will solve your problem. Logic is same as the solution suggested by Kyle. Have a look at this. <head runat=”server”> <title></title> <script type=”text/javascript”> function RefreshUpdatePanel() { __doPostBack(‘<%= Code.ClientID %>’, ”); }; </script> <asp:TextBox ID=”Code” runat=”server” onkeyup=”RefreshUpdatePanel();” AutoPostBack=”true” OnTextChanged=”Code_TextChanged”></asp:TextBox> <asp:UpdatePanel ID=”Update” runat=”server”> <ContentTemplate> <asp:DropDownList runat=”server” ID=”DateList” /> <asp:TextBox runat=”server” ID=”CurrentTime” ></asp:TextBox> </ContentTemplate> <Triggers> <asp:AsyncPostBackTrigger ControlID=”Code” … Read more