Server Side Close Command not firing Code

[Michael]

I am creating the dock dynamuically and for some reason I am having trouble with the DockCommandEventHandler event firing the corresponding c# code in dock_CustomCommand. Did I miss some sort of initialization? Is what I am trying to do possible? 

C#:

    {
        RadDock dock = new RadDock();
        UserControl ascx = (UserControl)Page.LoadControl(reference);
        dock.Title = title;
        dock.DockMode = DockMode.Docked;
        dock.UniqueName = Guid.NewGuid().ToString().Replace("-", "a");
        dock.ID = string.Format("RadDock{0}", dock.UniqueName);
        dock.Width = Unit.Percentage(50);
        dock.Height = Unit.Pixel(275);
        dock.Skin = "Vista";
        dock.EnableDrag = false;
        dock.CommandsAutoPostBack = true;

        dock.Commands.Add(new DockCloseCommand());

        dock.Command += new DockCommandEventHandler(dock_CustomCommand);

        dock.ContentContainer.Controls.Add(ascx);

        /*AsyncPostBackTrigger saveStateTrigger = new AsyncPostBackTrigger();
        saveStateTrigger.ControlID = dock.ID;
        saveStateTrigger.EventName = "Command";
        UpdatePanel1.Triggers.Add(saveStateTrigger);*/

        switch(position)
        {
            case "Left":
                dock.Width = Unit.Percentage(48);
                dock.Height = Unit.Pixel(240);
                RadDockLeft.Controls.Add(dock);
                break;
            case "Right":
                dock.Width = Unit.Percentage(48);
                dock.Height = Unit.Pixel(240);
                RadDockRight.Controls.Add(dock);
                break;
            case "Bottom":
                dock.Width = Unit.Percentage(99);
                dock.Height = Unit.Pixel(230);
                RadDockBottom.Controls.Add(dock);
                break;
            default:
                break;
        }
    }

    protected void dock_CustomCommand(object sender, DockCommandEventArgs e)
    {

        RadDock dock = (RadDock)sender;
        lbl_error.Visible = true;
        lbl_error.Text = "DEBUG: Rad Dock Closed. " + dock.ID + ", " + dock.Title;
    }

[Pero]

Hello Michael,

In order for the Command server-side event to be fired the state of the dock has to be saved and then applied when the dock is recreated. The event should also be attached on every postback. To demonstrate this I have created a simple project. Please find it attached to the thread.

Sincerely yours,
Pero
the Telerik team

[Michael]

Thanks for your example. However it does not allow for my user controls to be shown after postback.   I modified your create widget code to pass in the title and ascx reference location in the project. It seems to load the controls initially but once it has been reloaded I can't see them. Is this a limitaion to the ApplyState Function?
 

private RadDock CreateRadDockFromState(DockState state)
{
    RadDock dock = new RadDock();
    dock.DockMode = DockMode.Docked;
    dock.ID = string.Format("RadDock{0}", state.UniqueName);
    dock.ApplyState(state);
    dock.Skin = "Vista";
    dock.EnableDrag = false;
    dock.Commands.Add(new DockCloseCommand());
    dock.Command += new DockCommandEventHandler(dock_Command);
    return dock;
}
private RadDock CreateRadDock(string title, string reference)
{
    int docksCount = CurrentDockStates.Count;
    UserControl ascx = (UserControl)Page.LoadControl(reference);
    RadDock dock = new RadDock();

    dock.ContentContainer.Controls.Add(ascx);
    dock.DockMode = DockMode.Docked;
    dock.UniqueName = Guid.NewGuid().ToString().Replace("-", "a");
    dock.ID = string.Format("RadDock{0}", dock.UniqueName);
    dock.Title = title;
    dock.Skin = "Vista";
    dock.EnableDrag = false;
    dock.Commands.Add(new DockCloseCommand());
    dock.Command += new DockCommandEventHandler(dock_Command);
    CreateSaveStateTrigger(dock);
    return dock;
}

[Pero]

Hi Michael,

The ApplyState method applies a predefined (or saved) state to a given RadDock. The controls loaded within the dock must be recreated on every postback, if the they are dynamically created. There is no way for us to know what kind of controls are loaded within the dock, and then recreate them on every postback. It is developer's responsibility to recreate the dynamically created controls on trips to the server.
As you can see in the MyPortal demo, the LoadWidget method is called on every postback. This method loads a user control, and adds it to the ContentContainer of the respective dock.

Best wishes,
Pero
the Telerik team