Specifying custom attributes on your User Control

All parameters specified on a $$USERCONTROL(path=...); Identifier is passed along to the ASP.NET User Control as attributes.

Consider the following declaration:

$$USERCONTROL( Path=ThumbGallery.ascx, ListSize=4, ImgWidth=150 );

This will load the user control "/UserControls/ThumbGallery.ascx" and append the following named attributes to it:

• ListSize = "4"
• ImgWidth = "150"

To reference the values from within your User Control, simply use the following:

• Attributes[ "ListSize" ]
• Attributes[ "ImgWidth" ]

The total length of the identifier, including $$USERCONTROL(path=...);, may not exceed 256 characters. 

For more information try this sample User Control.