CASE CONDITION in Order by CLAUSE MSSQL

I have an situation to get the output result with condition in order by clause as per user input. i have get a solution. here i will share my solution

SELECT

 ItemCode, ItemName, Price

FROM  

 Date.ItemMaster 

ORDER BY  <condition>

Solution1:

DECLARE @input int

SET @input=1

/*

1 -  means ascending order

2 -  means Descending order

*/

SELECT Itemcode, ItemName, PurchasePrice

FROM Data.ItemMaster

ORDER BY

      CASE WHEN @input=1 THEN itemName END ASC,

      CASE WHEN @input=2 THEN ItemName END DESC

In the above code we can change the sorting order as per user need.