How Do I? Bind a TabItem in one Class to another Class

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C#

Visual-Studio

XAML

WPF

VS2010

I am a Beginner at C#, WPF and XAML.

How do I bind a WPF Class to a TabItem in another WPF Class?

What I am trying to do is create a WPF Window with multiple Tabs and then for ease of use & maintenance to create separate classes each containing all the display and processing details for what goes under the each TabItem.

Below is a TabItem. Lets say I have a class called ClientAddressItems.

How would I bind it and all its contents to the below TabItem? Clearly, The TabItem has a lot of code including a TabControl above it and also has many other TabItems below it.

<!-- Address Details Tab -->
            <TabItem Name="Item_Addresses"
                     Header="Addresses"
                     Grid.ColumnSpan="7"
                     Style="{StaticResource tabItemLevel3}"
                     BorderBrush="#FFCCCCCC">
             </TabItem>

Just to clarify the deapth of what I am trying to do. Please note:

In the actual application:

1. The main screen will have many TabItems with TabItems within each.
2.i.e, TAB1================TAB2=============TAB3
........Tab1A,Tab1B,Tab1C, etc for each Tab
3. Now Tab1A is would bind to a seperate Class.
4. This seperate Class will definately have an Address List. But will also have a number of TabItems under that and each one of those TabItems would need to bind to another seperate Class.

In summary I guess using adresses is a bad example.

The tree of tabs would be something like this: Only not the Tab names listed.

Lvl1 tabs - Maintenance Tab, Trade Tab, etc
Lvl2 tabs - Client Maint Tab, Customer Maint, Country Maint, etc - under the Maint Tab
Lvl3 tabs - Client Addresses Tab, Client Contacts, Client Branches, Client ...., etc - under Client Maint
Lvl4 tabs, etc

As you can see this can become ver large.