By default, the C1Expander control's header is empty. You can add text to the control's header by setting the Header property to a string in Blend, in XAML, or in code.

At Design Time in Blend

To set the Header property in Blend, complete the following steps:

1. Click the C1Expander control once to select it.
2. Under the Properties tab, set the Header property to a string (for example, "Hello World"). 

In XAML

To set the Header property in XAML, add Header="Hello World" to the <c1ext:C1Expander> tag so that it appears similar to the following:

<c1ext:C1Expander Header="Hello World" Width="150" Height="55">

In Code

To set the Header property in code, complete the following steps:

1. Add x:Name="C1Expander1" to the <c1ext:C1Expander> tag so that the control will have a unique identifier for you to call in code. 
2. Enter Code view and add the following code beneath the InitializeComponent() method:

Visual Basic	Copy Code
C1Expander1.Header = "Hello World"

3. Run the program.

 This Topic Illustrates the Following:

The header of the C1Expander control now reads "Hello World". The end result of this topic should resemble the following: