postback

问题 I have a GridView which is associated with an SqlDataSource . When I click a Button , I change the SelectCommand and then I use DataBind to update the GridView . After PostBack, I want the latest Data to Remain, I don't want the GridView to be loaded by the original SelectCommand . I know this is done by something called ViewState , but I didn't manage to implement it in the right way. I tried both EnableViewState="true" and EnableViewState="false" on the Grid itself, with no luck. Code <asp

问题 So i have a ASP.NET 4 Custom Control called "SafeClickButton" which is designed to override the default behaviour of the client-side click (OnClientClick). Essentially i'm trying to disable the button on click, then do any existing functionality (validation, postback, etc). It looks to be correctly rendering the HTML (onclick="this.disabled=true;__doPostback...), and it is disabling correctly, but the problem is with the page validation. If any validation on the page has failed, its posting

问题 So i have a ASP.NET 4 Custom Control called "SafeClickButton" which is designed to override the default behaviour of the client-side click (OnClientClick). Essentially i'm trying to disable the button on click, then do any existing functionality (validation, postback, etc). It looks to be correctly rendering the HTML (onclick="this.disabled=true;__doPostback...), and it is disabling correctly, but the problem is with the page validation. If any validation on the page has failed, its posting

问题 Surely will be marked as duplicate one but after tons of question and example i couldn't solve my problem. What i want? Calling server side event handler in asp.net from client side java script it is not going on server side. I checked it by setting breakpoint, the page flicks but server side method is not called. My click event on code behind is protected void btninsert_Click(object sender, EventArgs e) { // my code } aspx file <asp:Button ID="btninsert" runat="server" ValidationGroup="form"

问题 Surely will be marked as duplicate one but after tons of question and example i couldn't solve my problem. What i want? Calling server side event handler in asp.net from client side java script it is not going on server side. I checked it by setting breakpoint, the page flicks but server side method is not called. My click event on code behind is protected void btninsert_Click(object sender, EventArgs e) { // my code } aspx file <asp:Button ID="btninsert" runat="server" ValidationGroup="form"

问题 I'm having a small trouble with ASP.net. I have a small DataTable that i need to be page dependent and also user inaccessible. What i mean is: If i store the data from the DataTable inside a Hiddenfield, the hiddenfield is page dependent (different values for multiple same page requests) but its not user inaccessible since a user can modify its content and then post back. If i store the Datatable in session, that is user inaccessible (which is good) but since some of the content from the page

问题 I am refreshing an UpdatePanel with Javscript by calling a method like so: reloadDropDown = function (newValue) { __doPostBack("DropDown1", ""); selectNewValueInDropDown(newValue); } Inside my UpdatePanel is a <select> box that I need to select an <option> with a newValue . My problem is that my selectNewValueInDropDown method is being called prior to the __doPostBack from completing. Is there a way I can "wait" for the postback before calling my selectNewValueInDropDown method? 回答1: To make

问题 I'm firing up a jquery accordion with: $(document).ready(function(){ $('#accordion').accordion(); }); Problem is this is an .asp.NET application and if the page fires a postback is destroys the accordion. How do I re-initiate the accordion upon postback? Sorry I'm not an expert on asp.NET, and also sorry I can't give you a link to the example, this is because it's a password protected application. Thanks. 回答1: You need to re-initlaize the accordion after the post back with the UpdatePanel

问题 I want to intercept any postbacks in the current page BEFORE it occurs . I want to do some custom manipulation before a postback is served. Any ideas how to do that? 回答1: 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;

问题 In a page contains two UpdatePanels , How can I know which UpdatePanel causes the partial PostBack ? I mean in the Page_Load event handler. This is my code: <asp:ScriptManager ID="ScriptManager1" runat="server"> </asp:ScriptManager> <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional" onprerender="UpdatePanel1_PreRender"> <ContentTemplate> <A:u1 ID="u1" runat="server" /> </ContentTemplate> </asp:UpdatePanel> <asp:UpdatePanel ID="UpdatePanel2" runat="server" UpdateMode=