Sql Case With Wildcards ???

Hi,
 
I’m trying to use case statement in my view with wildcards for '%Tradies%', instead of listing all items      
 
WHEN 'Tradies Rebate1' THEN 'Test'
WHEN 'Tradies Rebate2' THEN 'Test'
WHEN 'Tradies Rebate3' THEN 'Test'
WHEN 'Tradies Rebate4' THEN 'Test'
 
At this moment '%Tradies%' does not work and gives me null values in EventGroup column.
 
Here’s my statemnt
------------------------------------------
CASE [dbo].[Event].[EventName]
      --WHEN 'Tradies Rebate1' THEN 'Test'
      --WHEN 'Tradies Rebate2' THEN 'Test'
      --WHEN 'Tradies Rebate3' THEN 'Test'
      --WHEN 'Tradies Rebate4' THEN 'Test'
      WHEN '%Tradies%' THEN 'Test'
      WHEN 'Install Products' THEN 'All Installed'
      WHEN 'Installation Product Conversion' THEN 'All Installed'
      WHEN 'Installation Products' THEN 'All Installed'
      WHEN 'BK 3' THEN 'All Bright Kids'
END AS [EventGroup],
------------------------------------------
 
 
 
Please help!!!