HOW TO CREATE GLOBLE CONNECTION FOR SQL SERVER 2005/8(DB)

1."Initial Catalog=Yas/DBNAME;Data Source=LocalHost;Integrated Security=SSPI"

2.@"Data Source= .\SQLEXPRESS;AttachDbFilename=|DataDirectory|\YAS/DBNAME.mdf; Integrated Security=True"

FOR CLASS FILE

3.public static string conn = @"Data Source=HOME-2D26AB6A95;Initial Catalog=YAS/DBNAME;Integrated Security=True";