Umbraco/Samples and Articles/Dot Net Controls/Using Querystring Parameters In UserControls
If you use usercontrols, wrapped in macros, in templates, this trick could save you a lot of time.
This is achieved by using squarebrackets and a "@".
Syntax: <?UMBRACO_MACRO macroAlias="myAlias" myProperty="[@parameter]" />
Sample: <?UMBRACO_MACRO macroAlias="myAlias" myProperty="[@id]" />