How I pass parameter from C# to trigger query in SQL

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i want do something before or instead of update , i create this trigger ,

SQL

create trigger CarTriggerBeforeUpdate
on dbo.Cars
INSTEAD OF UPDATE
AS
BEGIN
   insert into CarTriggerUpdateDelete(Car_id, Car_No, Car_No_2)
   select Car_id, Car_No, Car_No_2 from Cars
   where Car_id = @Value //i want pass value here 
END

What I have tried:

how i do that i want insert row from table to another table before update it

Posted 10-Aug-16 21:27pm

MahmoudOmar

Updated 10-Aug-16 21:49pm

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The Praveen Singh · Answer 1 · 2016-08-10T21:49:00

C#

Triggers cannot pass parameters - you have to operate within the database operation. Therefore, unless the Cars table has a CreateBy or LastUpdateBy referencing the id of the user making the change, you would need to wrap the INSERT into a stored procedure that would perform that check before performing the INSERT.

If by chance your Cars table has a CreateBy that contains the id of the user performing the change, then a trigger such as this below should work:

SQL

CREATE TRIGGER tg_Cars_Register ON dbo.Cars
AFTER INSERT AS
BEGIN
    IF EXISTS (SELECT * FROM INSERTED WHERE CreateBy <> 1110) BEGIN
        RAISERROR('Unauthorized parking', 16, 1)
        ROLLBACK
        RETURN
    END
END
GO