How to create a Stored Procedure with Try Catch and Transaction

CREATE PROCEDURE dbo.spname

AS

BEGIN

BEGIN TRANSACTION;

BEGIN TRY

/*

YOUR COMMAND

/*

END TRY

BEGIN CATCH

IF @@TRANCOUNT > 0

       ROLLBACK TRANSACTION;

END CATCH;

IF @@TRANCOUNT > 0

   COMMIT TRANSACTION;

END;

Cheers!
Uma