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====== Displaying different content depending on which category is shown ======

===== Overview =====

What if you wanted to change elements of your store design (e.g. navigation, graphics, etc.) depending on which category the customer is viewing? You can do so by using conditional statements based on the category ID. You can find out the ID of a category in many ways. For example, when editing the category in the Control Panel, look at the number that follows //?idcategory=// in the browser address field.

In the storefront, the category ID is loaded onto the page (//viewcategories.asp//) before //header.asp// and //footer.asp// are invoked. Therefore, you can place conditional statements in those files with the assumption that the category ID is known.

===== Example: one category =====

Here is a simple example. Let's assume you want to show something different when a certain category is shown. If it's just one category that you need to work with, you can use a simple "IF" statement. For instance, let's assume the category number is //100//. The ASP code would be:

<code>
 <% if pIdCategory=100 then %>
   Show special content to be displayed when category 100 is shown
 <% else %>
   Show something else
 <% end if %>
</code>

===== Example: multiple categories =====

If you want to show different content depending on the category shown, and you are dealing with a number of different categories, the you will want to use a "SELECT CASE" statement. The ASP code in that case would be:
<code>
<%
Select Case pIdCategory
  Case 100
    response.write("Show this message when category 100 is loaded.")
  Case 101
    response.write("Show this message when category 101 is loaded")
  Case 102
%>
 <strong>Use this HTML code when category 102 is loaded</strong>.
<%
  Case else
    document.write("Show this message when other categories are loaded.")
End Select
%>
</code>

===== Other notes =====

  * This article can certainly be expanded with additional, more complex examples.
  * [[:how_to|Other "How To" articles]]
  * [[developers:technical_articles|Other Technical articles]]
  * [[http://www.w3schools.com/VBScript/vbscript_conditionals.asp|Introduction to conditional statements in ASP]]

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