# C1Expander Elements

## Content



This section provides a visual and descriptive overview of the elements that comprise the [C1Expander](/componentone/api/wpf/online-extended/dotnet-framework-api/C1.WPF.Extended.4.6.2/C1.WPF.Extended.C1Expander.html) control. The control is comprised of two elements – the header and the content area – that combine to make the complete **C1Expander** control.