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RadDockLayout Failes to Fire OnLoadDockLayout Event when embedded within a dynamically added usercontrol.

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Mario Lozano
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Mario Lozano asked on 20 Sep 2008, 11:35 PM
So here's the setup... I have working code for a RadDockLayout with dynamically added controls from database records using 2008.0.826.20. This scenario has the RadDockLayout setup in a UserControl which needs to be dynamically added to a PlaceHolder control already on the page. When I setup and test the Docking solution with the UserControl placed on the page everything works as expected and the OnLoadDockLayout and OnSaveDockLayout events fire as expected. However, simply adding a PlaceHolder to the page and loading the UserControl dynamically during Page_Load the OnLoadDockLayout event never fires and state is not persisted.

The following is the code used to load the UserControl during Page_Load

Control _ctrl = LoadControl("App_Templates/TemplateGeneralContentNEW.ascx");
_ctrl.ID = "Test";
phMod.Controls.Add(_ctrl);

Any assitance or insight into why this is happening and how to correct it is greatly appreciated.

Jason

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Mario Lozano
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answered on 20 Sep 2008, 11:48 PM
Upon further reviewing and testing of this scenario I did find that changing the dynamic attachment of the UserControl from the Page_Load event to Page_Init resolved this problem in both PlaceHolder and RadPageView which are both in use in my scenario.

I am still interested to know more about this behaviour in the page lifecycle as the UserControl was using Page_Init handle the initial setup from the database and loading from state. The initial loading of the docks worked well.

Thanks,

Jason
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Sophy
Telerik team
answered on 23 Sep 2008, 03:03 PM
Hi Jason,

If you are dynamically creating the RadDockLayout it should be created at Page_Init as the RadDockLayout maintains the state and the proper positioning of the RadDocks inside it. I suggest you also take a look at the RadDock LifeCycle help article for reference. You can also review the following online examples:
Let us know if you need further assistance.

Kind regards,
Sophy
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