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  • Re: 'this.CssClasses[...].Base' is null or not an object

    Posted to ComboBox for ASP.NET AJAX by Chris on Oct 28, 2009
    My guess this is in a callback grid. There is currently an issue with the combobox, which is that the Grid isn't re-initializing these combos. One thing to do would be on Callback Complete client event, initiailze the combobox. < script > function Grid1_onCallbackComplete(sender, e) { ComboBox1.Initialize(); ComboBox1.Initialize(); } </ script > ...this is correct, we initialize twice... < componentart : Grid ... > < ClientEvents > < callbackcomplete eventhandler =...
  • Please update your demo code with known issues!!!

    Posted to CallBack for ASP.NET AJAX by Firehawk70 on Sep 15, 2009
    As a developer, I should not have to waste my time digging for knowledgebase and forum issues if you already know about them. I should be able to look at the Callback demos, for instance, and not have to search the web to find out that I need to dispose of my grid: This demo: http://aspnetajax.componentart.com/control-specific/callback/programming/passing_multipleParameters/WebForm1.aspx ...should be updated with this KB info: http://www.componentart.com/kb/article.aspx?id=10163
  • create treeview entirely via callback

    Posted to CallBack for ASP.NET AJAX by zhuang on Sep 11, 2009
    Hi, Try to create a treeview dynamically via callback with no drag and drop at design time. seems it is not initialised properly. Any suggestions? Thanks
  • How to implement Data Grid Paging in callback mode

    Posted to DataGrid for Silverlight by jtml2009 on Sep 9, 2009
    Hi, When using grid in callback mode, I will be returning records ONLY for current page. So first time when grid is shown, proably I will be showing Page 1. How do I set total number of pages, so that user knowns how many pages of data is available. I understand PageSize and sending page index, size to server. But I could not find DataGrid property that sets total pages - so that user can browser through pages -Even thugh he sees only one page at a time. Thanks
  • viewstate of user control lost

    Posted to DataGrid for ASP.NET AJAX by menx on Sep 7, 2009
    Ho, this one is bugging me quite some time. I have a gridview inside a CA callback. This code is located in a composite user control. When the callback fires the callback handler stores some variables in the viewstate of the user control. So far so good. But when the NeedDataSource event of the Grid fires the Viewstate has been cleared. Can someone provide some hints why this is the case ? Many Thanx, Marc.
  • UserControl Callback Problem

    Posted to Snap for ASP.NET AJAX by OliverLeigh on Jul 9, 2009
    Hi, I am having a problem with the snap control. What I am trying to do is create a sort of portal that contains user controls. On the server, the user controls are loaded, and placed into a snap control that is created server side. This all works fine, the snap controls all get generated and apeear on screen. However, some of the user controls contain controls that require callbacks to function (A third party datagrid being one). Now for some reason these callbacks do not function while they...
  • HOWTO: Fully Database Driven TreeView Sample ComponentArt Callback

    Posted to TreeView for ASP.NET AJAX by Chris on Oct 31, 2008
    This is my sample of a fully database driven Treeview. Notes : Client Treeview with client events: <NodeBeforeMove EventHandler="onBeforeMove" /> <NodeMove EventHandler="onMove" /> <NodeRename EventHandler="onBeforeRename" /> <ContextMenu EventHandler="TreeView1_onContextMenu" /> <CallbackComplete EventHandler="TV_onComplete" /> Database actions are performed using component are callback Extra client actions are suppressed...
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