Telerik blogs

Tag: ASP.NET AJAX

  • Web ASP.NET AJAX

    Taming Ajaxified asp:HiddenField Controls in Internet Explorer

    If you are using asp:HiddenField controls (rendered as <input type="hidden" />) in your website and update their values with AJAX requests, you may observe some unexpected changes in the page layout in Internet Explorer (IE). It will seem that an empty line is inserted at each location where a HiddenField control resides. The behavior is observed only in IE and looks like a problem caused by the browser or the MS AJAX client-side framework. A quite easy workaround for this glitch is to wrap the HiddenField in a container with no height and reduced font size. Here is an...
    by Iana Tsolova
    December 09, 2008 1 min read
  • Web ASP.NET AJAX

    Image Centering Techniques You Should Know About

    The following new code library entry demonstrates two alternative techniques for centering an image inside a RadAjaxLoadingPanel. Both techniques should not be something new for CSS-savvy devs, however, we receive queries for them from time to time, so it will be good to have an example available online: How to Center Image In a RadAjaxLoadingPanel  ...
    by Iana Tsolova
    November 19, 2008 1 min read
  • Web ASP.NET AJAX

    ASP.NET binding with OpenAccessDataSource

    In the last post we saw how easy it is to reverse engineer a database schema. Let's now use the resulting persistent classes library to build the first website. Let's do it again step by step: Step 1: Use the resulting solution from the northwind reverse engineering post. Step 2: Add a new web application by execution File->Add->New Web Site... from the Visual Studio Menu. Choose ASP.NET Web Site. Step 3: Add a reference from the website to the class library. Select the website project in the Solution Explorer and execute Website->Add reference from the Visual Studio Menu. Select the class library project in the Projects tab.   All...
    by Jan Blessenohl
    November 15, 2008 2 min read
  • Web ASP.NET AJAX

    Optimized Rendering and Skins for RadCalendar for ASP.NET AJAX

    I have the pleasure to announce that RadCalendar for ASP.NET AJAX has undergone a considerable HTML and CSS optimization. As a result, the HTML output generated by the following RadCalendar declaration has dropped from 5,916 bytes to 3,905 bytes, or by...
    by Iana Tsolova
    October 14, 2008 1 min read
  • Web ASP.NET AJAX

    Don't store ASP.NET controls in Session, Application or Cache

    In some cases you may end up with the following exception when working with RadControls for ASP.NET Ajax: "Script controls may not be registered after PreRender." The explanation of this error is simple - some UI control implementing the IScriptControl interface (e.g. any control from the RadControls for ASP.NET Ajax suite) is stored in the Session, Application or Cache and then is added in some live controls collection. Here is an...
    by Atanas Korchev
    September 19, 2008 2 min read
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