updatepanel

问题 I have the following case, all my controls on an update panel on the page. One of these controls is a GridView, this GridView contains a CheckBox on the header template field (to make a check all). The autopostback is true but when the check changed no thing is changed, the update panel has a trigger asynchronous post back for the GridView. 回答1: You'll have to define an ASyncPostBackTrigger like so: <asp:UpdatePanel> <Triggers> <asp:AsyncPostBackTrigger ControlID="yourCheckBox" /> </Triggers>

问题 I have a button (inside an UpdatePanel ) which opens a popup form which allows me to enter some data then submitting does some function (Updates an UpdatePanel with the new data entered) and closes the pop-up: <asp:HyperLink ID="hlCreateMsg" runat="server" NavigateUrl="JavaScript:void(0);" CssClass="linkOff" ClientIDMode="Static">Create New</asp:HyperLink> <div id="popupContact"> <a id="popupContactClose" title="Close Window">x</a> <h3>Add a New Message</h3> <div id="dvFirst" class=

问题 This may sound, or actually be, a stupid question but I need to find the best way to proceed with a project I am on. I have a multipage webform, using the multiview control. That multiview is in an updatepanel control, and everything works great so far. My question is about users with javascript disabled. What I have noticed is that in this scenario, when a user clicks the button to go to the next page, I am just left with a normal multi page form, where the page causes a postback, the page

问题 aspx: <asp:UpdatePanel ID="updtEmpMaster" runat="server"> <ContentTemplate> <asp:FileUpload ID="tPhoto" Height="23px" runat="server" /> <asp:Button ID="Button1" CssClass="btnImage" runat="server" Text="OK" onclick="Button1_Click" /> </ContentTemplate> </asp:UpdatePanel> aspx.cs: protected void Button1_Click(object sender, EventArgs e) { if (tPhoto.HasFile) { …………………..; } else { …………………..; } } Here if condition is failing even after an image file is uploaded. No problem when using without

问题 I have been using update panels , all i need is whenever a partial post back is done , i need to check for a condition which decides whether to proceed that post back to server or not for now all i know is i can write the necessary code in function pageLoad(sender, args) { if (args.get_isPartialLoad()) { // What should be done here to control the partial postback } } i am trying to do the conventional "save confirmation before exit" in update panels with partial postback 回答1: I will provide

问题 I am currently working on a ASP.NET AJAX application. Having decided to not use UpdatePanels for evident reasons, what alternatives to I have? This application has pages built dynamically and so most or all the components of the page exist as User Controls. I need to make AJAX calls from ASCX user control page. And as ASCX user controls may not contain Page Methods, what other options do I have? Or, is there a way to get around using Page Methods in ASCX page? 回答1: You can't call webmethods

问题 I am having a problem where I have an UpdatePanel that uses a timer to trigger to update an ASP graph with new points (essentially the guide at http://www.4guysfromrolla.com/articles/121609-1.aspx under "Creating Real Time Charts"). I'm having a problem where whenever the timer ticks, the entire page scrolls to the top. How can I maintain the scroll position in the page when the timer ticks? I've tried the instructions at http://www.4guysfromrolla.com/articles/111704-1.aspx and several other

问题 I have a form from where I am navigating to a form of mine where I have a text box for quantity. Previously I was entering the quantity. Now, IO have a work flow that is the reason the other form comes in picture. Now, I have extensive coding done my text box text changed event. When I do response.redirect form other form, I flow quantity also and put that quantity in that text box. Now i dont want to write a new code(function) for doing the same as updation procedure will also be done.

问题 This is sort of a follow-up to my question here: Asp:Label is not shown when visible is set to true? In the above question, I had a few controls where the visibility was not being set to false because they were not in an UpdatePanel . Once I put the controls inside an UpdatePanel , the toggling of visibility worked, but this has caused me another problem. I have an ImageButton that exports to excel. When the button was not in an UpdatePanel , the click event fired, but now that I put it

问题 I have question about why 2 controls in separate repeaters cannot have the same ID if they are within an update panel, but they can share the same ID if they are not in an update panel. See this code... <asp:Repeater ID="rptFirstRepeater" runat="server"> <ItemTemplate> <asp:Image runat="server" ID="imgThisWorks" /> <asp:UpdatePanel runat="server"> <ContentTemplate> <asp:Image runat="server" ID="imgThisDoesntWork" /> </ContentTemplate> </asp:UpdatePanel> </ItemTemplate> </asp:Repeater> <asp