Each tab on the C1TabControl is represented by the C1TabItem class. The header of the tab is exposed by the Header property of the C1TabItem. Each tab is associated with a tab page (see Tab Page).

Tabs can appear rounded, sloped, or rectangular. When a tab is added to a page, its default appearance is sloped – it looks similar to a tab on an office folder.

You can add a close button to each tab by setting the TabItemClose property to InEachTab. This will allow users to close any tab in the control; however, you can deny users the ability to close a particular tab by setting that tab's CanUserClose property to False.

Adding a Tab

It's easy to add a C1TabItem to a C1TabControl.

• At Design time, you can select the C1TabControl on your page, and add a C1TabItem by double-clicking the C1TabItem icon in the Toolbox.

• If you would rather use XAML markup, you can add a C1TabItem using the following markup:

Example Title	Copy Code
<c1:C1TabControl> <c1:C1TabItem Content="c1TabItem"> </c1:C1TabItem> </c1:C1TabControl>

• It's also easy to use code to add a C1TabItem. Import the correct namespace first, and then add the following code to the InitializeComponent() method:

Visual Basic	Copy Code
'Create the tab and add content Dim C1TabItem1 As New C1TabItem() C1TabItem1.Content = "C1TabItem1" 'Add the tab to the control c1TabControl1.Items.Add(C1TabItem1)

 

C#	Copy Code
//Create the tab and add content c1TabItem c1TabItem1 = new c1TabItem(); c1TabItem1.Content = "c1TabItem1"; //Add the tab to the control c1TabControl1.Items.Add(c1TabItem1);

Customizing the Header

When you want to add something simple to the tab's header, such as an unformatted string, you can simply use the common XML attributes in your XAML markup, such as in the following:

<c1:C1TabItem Header="Hello World"/>

The Header can also be customized using code:

C1TabItem1.Header = Hello World

c1TabItem1.Header = Hello World;

You can also customize the header using the HeaderTemplate.

The C1TabControl's tabstrip is created by adding one or more C1TabItem items to the control. Each tab in the strip is associated with a tab page (see Tabs and Tab Page). 

By default, the tabstrip appears along the top of the C1TabControl, but you can adjust the position of the strip by setting the TabStripPlacement property You can also adjust the overlap of the tabs by setting the TabStripOverlap and TabStripOverlapDirection properties.

The tabstrip can also contain two optional items: a close button and a menu drop-down arrow. The close button, when clicked, closes the selected tab; the menu drop-down arrow, when clicked, exposes a drop-down menu from which users can open a different tab.

When a tab (C1TabItem) is added to a C1TabControl control, it will have a corresponding tab page that will initially appear as an empty space. In the tab page, you can add grids, text, images, and arbitrary controls. When working in Visual Studio's Design view, you can add elements to the tab page using a simple drag-and-drop operation.

You can add text to the tab page by setting the item's Content property or by adding a TextBox element to the tab page. Adding elements to the tab page at run time is simple: You can either use simple drag-and-drop operations or XAML in Visual Studio. If you'd prefer to add a control at run time, you can use C# or Visual Basic code.

A C1TabItem item can only accept one child element at a time. However, you can circumvent this issue by adding a panel-based control as its child element. Panel-based controls, such as a StackPanel control, are able to hold multiple elements. The panel-based control meets the one control limitation of the C1TabItem item, but its ability to hold multiple elements will allow you to show several controls in the tab page.

Adding Content to Tab Pages

• Using XAML markup

When you want to add something simple to the tab page, such as an unformatted string or a single control, you can simply use the common XML attributes in your XAML markup, such as in the following:

XAML	Copy Code
<c1:C1TabItem Content="Button" Height="Auto" Width="Auto"/>

However, there may be times where you want to add more complex elements, such as grids or panels, to the tab page. In this case you can use property element syntax, such as in the following:

XMAL	Copy Code
<c1:C1TabItem> <c1:C1TabItem.Content> <StackPanel> <TextBlock Text="Hello"/> <TextBlock Text="World"/> </StackPanel> </c1:C1TabItem.Content> </c1:C1TabItem>

• Using Code

Using code to customize content is just as easy as using markup. To add a button control to a tab page, first import the appropriate namespaces, and then add the following code to the InitializeComponent() method:

Visual Basic	Copy Code
'Create the Button control Dim NewButton As New Button() NewButton.Content = "Button" 'Set the Button Control's Width and Height properties NewButton.Width = Double.NaN NewButton.Height = Double.NaN 'Add the Button to the content area c1TabItem1.Content = (NewButton)

 

C#	Copy Code
//Create the Button control Button NewButton = new Button(); NewButton.Content = "Button"; //Set the Button Control's Width and Height properties NewButton.Width = double.NaN; NewButton.Height = double.NaN; //Add the Button to the content area c1TabItem1.Content = (NewButton);

You can also customize the content using the ContentTemplate.