Bob,

I'm glad you got it working. In fact, my code already had that last line of code you mentioned in your reply - and everything works fine, except for the "Group" of tabs. What I am referring to in my question is related to the MdiTab object not being able to restore its original group location. In fact, no additional groups are created upon RestoreTab.

Following is an example of my code, although it may seem a little more intimidating since I am using Assembly class to load new forms. This example also shows how my program uses a pluggin architecture optimized for the farsighted kinda guy I am :)

Kel.

********* Example Code follows: this code should be contained within the RestoreTab event-handler within a Try-Catch block *******

Assembly a = Assembly.LoadFrom("Plugins\\" + e.Tab.PersistedInfo);
Type t = a.GetType(e.Tab.PersistedInfo);
Form page = (Form)Activator.CreateInstance(t); // wireup events and delegates
page.Text = e.Tab.PersistedInfo;
page.MdiParent = e.Tab.Manager.MdiParent;
page.InitializeMDIChild(this); // this is my own init function
page.Visible = e.WasVisible;
e.Form = page;

 Kel,

Here's the section from the help file that pointed me in the right direction.

 I was running into the same problem with the RestoreTab event. The key to getting all of the forms to reload correctly is the last line of this code:

 e.Form = edit

I spent about half an hour hunting this down and realized I missed this line. Once I added it, all of my mdi forms were restored correctly. Good luck.

Bob

[C#] 

        using Infragistics.Win; 
        using Infragistics.Win.UltraWinTabs; 
        using Infragistics.Win.UltraWinTabbedMdi; 
 
        private void ultraTabbedMdiManager1_RestoreTab(object sender, Infragistics.Win.UltraWinTabbedMdi.RestoreTabEventArgs e) 
        { 
            // The 'RestoreTab' event is invoked during a call to  
            // LoadFromBinary or LoadFromXml when deserializing the  
            // serialized MdiTab objects. The event is invoked once  
            // for each serialized tab so that it may be associated 
            // with an mdi child. If the Form is not initialized the  
            // tab will be discarded. 
            // 
 
            // The 'PersistedInfo' can be used to store any serializable  
            // value. It is opaque to the tab and can be used to store  
            // information to help recreate the form that the tab should 
            // be associated with. 
            // 
            string fileName = e.Tab.PersistedInfo as string; 
 
            // By exiting without setting the 'Form' parameter, 
            // we're discarding the tab. 
            if (fileName == null || !System.IO.File.Exists(fileName)) 
                return; 
 
            // Create the form that we will associate with the Tab. Normally  
            // whenever an mdi child form is created, an MdiTab is automatically  
            // created for the form but during the RestoreTab event, this will  
            // not happen so that new forms may be created to associate with  
            // a deserialized tab. 
            // 
            EditForm edit = new EditForm(); 
            edit.FileName = fileName; 
 
            // set the MdiParent property of the new form so it 
            // will be an mdi child form. Since the event could  
            // be caught somewhere other than the form class, we  
            // can access the MdiParent via the associated  
            // UltraTabbedMdiManager's MdiParent. 
            edit.MdiParent = e.Tab.Manager.MdiParent; 
 
            // The 'WasVisible' parameter indicates whether the tab 
            // was part of the HiddenTabs collection when the serialization 
            // took place. If the visible state is different, then the  
            // tab will be moved to/from the HiddenTabs collection to/from 
            // a tab group as needed. 
            // 
            edit.Visible = e.WasVisible; 
 
            // Set the 'Form' parameter so that the MdiTab will be  
            // associated with the form. 
            e.Form = edit; 
        }