if you are wondering how to use Like in Case statement. Here is what you can do:

you must have used following lines:
CASE TableColumn

WHEN '1' THEN 'ToDo_1'
WHEN '2' THEN 'ToDo_2'
Else 'ToDo_Default_0'

END

In order to use like in Case this is what you can use:

CASE TableColumn

WHEN '1' THEN 'ToDo_1'
WHEN '2' THEN 'ToDo_2'
Else
    (CASE 
            WHEN TableColumn LIKE '%criteria'    THEN 'ToDoForLikeCriteria'
            ELSE 'ToDo_Default_0'
    END
    )

END

I hope this is what you are looking for...