Me.("data-target", "#" & pnlModal.ClientID)Ĭredit: This post builds upon KHComputers’ excellent contribution about Bootstrap Modal Dialogs in ASP. Protected Sub Page_Load(sender As Object, e As EventArgs) Since data-target isn’t a standard, supported HTML attribute, you can use the Attributes.Add method to set it via the Page_Load event of your code-behind as follows: To solve this, you just need to set the data-target to pnlModal’s clientID (the rendered name). The problem is that in an application with master pages, the actual rendered name of the pnlModal div will likely become something like “ctl00_ContentPlaceHolder1_pnlModal” and Bootstrap won’t be able to associate it with the necessary JavaScript to show the dialog so the button does nothing. Why? The answer comes down to the “data-target” attribute of the invoking button, which is meant to tell Bootstrap the panel to activate: Nontheless, I tried to visualize what you are trying to achieve. I have gone through your shared code snippet between the line altough, you haven't shared your index page's code that certainly playing important role here. But try the same thing in an ASP.Net app with a master page and nothing happens. Master Detail not showing details table in modal popup - ASP.NET Core. Pushing the button shows the dialog, and everything’s ducky. Most examples for using Bootstrap’s very robust dialog support go something like this: Var left = Math.max($(window).width() / 2 - loading.This is a short blog about solving a nasty problem with using Bootstrap’s Modal Dialogs with ASP.NET and Master Pages. Var top = Math.max($(window).height() / 2 - loading.offsetHeight / 2, 0) Markup of Page from which a loader is shown I tested the markup below with a Page PageTakingLongToLoad.aspx that took 20 s to load the first time it rendered, and with ajax/non-ajax postbacks that took 10 s to complete, and in both cases the loader displayed perfectly as expected. You can modify some of these styles like border or background-color and also you can substitute any animated image in place of loading.gif. The loader popup is styled to show at center of page in a modal manner' these styles can be found in the head section of markup pasted below. In the last scenario where an ajax postback is done, an UpdateProgress control is used so it automatically hides once the ajax postback completes. This method shows a popup div that has an animated image in it. In first two of above scenarios, all you need to do is hookup their client click event with a JavaScript method of ShowProgress. on button click that does an ajax postback.I found that Bootstrap is not allowing two forms in one page (blocking values of another form), and as we all know, we have a master form in master page, so I can't use another form for the modal, and my modal is rendering. hyperlink click that navigates to another page I am trying to pull values entered by a user from a C code file using a Bootstrap modal, which is in an ASPX page.On button click that does a non-ajax postback.There are three scenarios in which you would like to show a loader element in an aspx page and they are: You will need jquery in your aspx page for this to work. To verify that the loading image shows up in above sample you can simply go to this URL : Loading Image when Page first loadsĪnother very simple approach with tested/tried sample code is as explained below. You can ask me if you have any questions regarding this sample. This has detailed explanation with full working code as well as a link to demo page. An exact situation with detailed code and explanation, where a loading image is shown on loading of an asp.net page can be seen at following URL : Show Loading Image when Page first Loads.
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