ASP.NET 4 Unleashed

Creating a Container ControlDesigner

If you associate a custom control with a ContainerControlDesigner, you can add child controls to your control in Design view. For example, the file in Listing 36.34 contains a GradientPanel control. This control displays a gradient background behind its contents (see Figure 36.16).

Figure 36.16. Displaying the GradientPanel control.

Listing 36.34. GradientPanel.cs

The GradientPanel control uses an Internet ...