Run a Script Each time a table is modified - sql

Question

I have created a batch script which prints information on the table into a label and saves it into pdf. At the moment, I am giving the script a number, which is the ItemCode and it prints out the rest of the information in the table.
Well now I'm going much further, my goal is to run the script each time the table is modified, or a new row is added or even if a single field is modified. When this happens it would check which row has been modified and It would run the script with the ItemCode which has been modified.
Been looking for something similar to this but couldn't find anything precise enough, so any help would be nice!

Answer 1

The code below is part of a trigger I am using. It writes old values and new values into a special table to track all important changes. The updated_idx is send with the SQL command to tell, what user is doing it.:
USE [Demo] -- database
GO
/****** Object: Trigger [dbo].[update_Address] Script Date: 26.07.2018 11:16:40 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER TRIGGER [dbo].[update_Address] ON [dbo].[Address] for UPDATE AS
DECLARE #fieldname varchar(128) = '- empty -'
DECLARE #newValue varchar(2048) = '- empty -'
DECLARE #oldValue varchar(2048)= '- empty -'
DECLARE #Updated int = datediff(s,'01/01/1970',SYSUTCDATETIME())
DECLARE #Updated_IDX int = -1
DECLARE #ID int = -1
DECLARE db_cursor CURSOR FOR SELECT Address_id, Updated_IDX FROM inserted
OPEN db_cursor
FETCH NEXT FROM db_cursor INTO #ID, #Updated_IDX -- this takes the current id
WHILE ##FETCH_STATUS = 0
BEGIN
SET NOCOUNT ON
If UPDATE([ZipCode])
BEGIN
SELECT #OldValue=b.ZipCode, #NewValue=a.ZipCode FROM inserted a, deleted b
IF #NewValue <> #OldValue
BEGIN
INSERT INTO TransactionLog ([ID],[TableName],[Type],[FieldName],[newValue],[oldValue],[Updated],[Updated_IDX]) values (#ID,'Address','U','ZipCode',#newValue,#oldValue,#Updated,#Updated_IDX);
END
END
If UPDATE([City])
BEGIN
SELECT #OldValue=b.City, #NewValue=a.City FROM inserted a, deleted b
IF #NewValue <> #OldValue
BEGIN
INSERT INTO TransactionLog ([ID],[TableName],[Type],[FieldName],[newValue],[oldValue],[Updated],[Updated_IDX]) values (#ID,'Address','U','City',#newValue,#oldValue,#Updated,#Updated_IDX);
END
END
FETCH NEXT FROM db_cursor INTO #ID, #Updated_IDX
End
CLOSE db_cursor
DEALLOCATE db_cursor