Good day everyone! I'm still a noob with C#.NET so patience pls! I'm making a Windows Forms Application with a database from MS SQL 2005 Express. I want to transfer this projects with the database to another pc. What should I do? Should I transfer the database (.mdf and the log) from the MS SQL folder along with the project? I have this connection string inside the application @"Data Source="+Environment.MachineName+"\\SQLEXPRESS;Initial Catalog=BFootwear;Integrated Security=True;"; I made the Environment.MachineName to get the datasource automatically. This was also automatically generated and I copy pasted it from the properties of the database in the server explorer. I also have a dataset in my application. Will it be affected? I tried it but I had i-cant-understand-why results. The connection string from the properties in the server explorer changed to Data Source=.\SQLEXPRESS;AttachDbFilename="xxx";Integrated Security=True;Connect Timeout=30;User Instance=Truewhere the xxx is the directory of the database. Then when i compiled it, it doesn't connect anymore. Any help would be appreciated.