RadDock server side DockPositionChanged does not fire when dropping control in the same position

[Hung Leong]

I dynamically created raddocks on the server side.

dock.DockPositionChanged += new DockPositionChangedEventHandler(dock_DockPositionChanged);

So I used this line of code to add event handler, however it only gets fired when the control is dropped to another position. It doesn't get fired if I dropped it to the same position.

How do I make it gets fired even if I drop it to the same position. Thanks.

[Danail Vasilev]

Hi Hung,

The server-side OnDockPositionChanged event is fired when one of the following changes with the dock are done:

• A move from one RadDockZone control to another.

• A move from a RadDockZone control to a floating position.

• A move from a floating position to a RadDockZone control.

• A change of index within a RadDockZone control.

More information on the matter is available here - http://docs.telerik.com/devtools/aspnet-ajax/controls/dock/server-side-programming/events/dockpositionchanged

If you want to call a server-side event when a dock is positioned to the same position you can handle the client-side OnClientDockPositionChanged event where you can trigger an AJAX request and execute the server-side logic.​

Regards,
Danail Vasilev
Telerik

 

 

[Hung Leong]

What if I could only bind DockPositionChanged event handler on the server as raddocks are created dynamically on the server side. How to achieve this?

[Danail Vasilev]

Hi Hung,

You can attach to the DockPositionChanged event for a dynamically created dock like that:

ASPX:

<telerik:RadDockZone ID="RadDockZone1" runat="server">
    <telerik:RadDock ID="RadDock1" runat="server">
        <ContentTemplate>
            dock 1
        </ContentTemplate>
    </telerik:RadDock>
</telerik:RadDockZone>
<asp:Label ID="Label1" Text="" runat="server" />

C#:

protected void Page_Load(object sender, EventArgs e)
{
    RadDock rd1 = new RadDock();
    rd1.AutoPostBack = true;
    rd1.ID = "dock2";
    rd1.DockPositionChanged += new DockPositionChangedEventHandler(RadDock1_DockPositionChanged);
    RadDockZone1.Controls.Add(rd1);

}
protected void RadDock1_DockPositionChanged(object sender, DockPositionChangedEventArgs e)
{
    Label1.Text = DateTime.Now.ToString();
}

Note that this is a server-side event, so in order for it to be fired you should set the AutoPostBack property of the dock to true.

Regards,
Danail Vasilev
Telerik