C1Splitter's panels show WYSIWYG views so that you can view the result without having to run the project. With the WYSIWYG designer interface C1Splitter supports, it is simple to arrange child controls in the containers of the panels because C1Splitter displays them as it would at run time.

You can add as many child controls to each panel by dragging and dropping each control into the desired panel. When you add a child control to the C1Splitter, it places the child control in the top left corner of the panel by default.

Panels can be selected on the Web form by clicking anywhere inside the respective panel's rectangular box.