Sitecore 6: Using Parameters in Web Controls.

In Sitecore v5, using Parameters listed on the sublayout in the presentation details was a lengthy dive into the core UI API.  In Sitecore v6, they've modified it to be simpler.  For instance, if you have a sublayout (*.ascx) that has parameters listed you can now access those Parameters using the following code:

  string rawParameters = Attributes["sc_parameters"];
  NameValueCollection parameters = Sitecore.Web.WebUtil.ParseUrlParameters(rawParameters);

However, if you take advantage of using custom WebControls (*.cs) instead of a Sublayout (*.ascx) then that method doesn't work.  Instead you'll want to make use of the Parameters property on the inherited WebControl.

  string rawParameters = this.Parameters;
  NameValueCollection parameters = WebUtil.ParseUrlParameters(rawParameters);