This tutorial will teach you how to do the login from validation using C#.net and Sqlserver. Import the Namespaces using System.Data.SqlClient; Establish the Database Connection SqlConnection con = new SqlConnection(“server=.;database=StarAirways;user id=sa;password=123;”); Add Button [crayon-6472809caae6b520707938/] i have attached the video link below. which will do this tutorials step by step.