How to cancel ONE of multiple Tabbed Floating Control Closes

Using DockingManager:
I have 2 controls floating, tabbed.

When the user clicks the Close button, I don't want BOTH to close, just the current one.

I know I need to use the DockVisibilityChanging, but don't really know how to accomplish this. If I cancel, it cancels all of them.

I need the first non-selected control in the tab group to become the active control, and the one that was active to go away.

Hi ERobishaw,

Sorry for the delay in responding.

You can achieve your requirement using the following code:

[C#]
void dockingManager1_DockVisibilityChanging(object sender, DockVisibilityChangingEventArgs arg)
{
bool flag = false;
DockHost dhost2 = arg.Control.Parent as DockHost;
DockHostController dhc = dhost2.InternalController as DockHostController;
if ((dhc.ParentController != null) && (dhc.ParentController is DockTabController))
{
DockTabController dtc = dhc.ParentController as DockTabController;
DockTabControl tabcontrol = dtc.TabControl as DockTabControl;
TabPageAdv tab1 = tabcontrol.SelectedTab;
tab1.Hide();
foreach (TabPageAdv tab in tabcontrol.TabPages)
{
if (tab.TabVisible == true)
{
flag = true;
break;
}
}
}
if (flag)
arg.Cancel = true;
}

Please refer to the attached sample that illustrates the same:
http://websamples.syncfusion.com/samples/Tools.Windows/F69219/main.htm

Kindly let me know if this helps you.

We appreciate your interest in Syncfusion products.

Best regards,
Golda