Question

I have C# .net project with SQL Server 2008 written in Visual Studio 2008. There I used the following connection string to connect with SQL Server:

string connectionString = 
    @"server=HASIBPC\SQLEXPRESS; Integrated Security=SSPI; 
      database=XPHotelManagementDatabase";

But problem is every time I take my application from one computer to another computer I need to change the server in connectionString. I don’t want to change this manually. I want this will change dynamically. How will I do that using app.config?

Answer 1

Here is a sample;

Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\PressbyranDB.mdf;Integrated Security=True;User Instance=True;MultipleActiveResultSets=True

Note that Data Source=.\SQLEXPRESS; attribute as your SQL Server and Server Instance name. Also, you do not need to restore your database from machine to machine if you use the AttachDbFilename= attribute.