How can I set an SQL Server connection string?

c#, connection-string, sa, sql-server

Solution

.NET DataProvider -- Standard Connection with username and password

using System.Data.SqlClient;

SqlConnection conn = new SqlConnection();
conn.ConnectionString =
  "Data Source=ServerName;" +
  "Initial Catalog=DataBaseName;" +
  "User id=UserName;" +
  "Password=Secret;";
conn.Open();

.NET DataProvider -- Trusted Connection

SqlConnection conn = new SqlConnection();
conn.ConnectionString =
  "Data Source=ServerName;" +
  "Initial Catalog=DataBaseName;" +
  "Integrated Security=SSPI;";
conn.Open();

Refer to the documentation.

Problem

I'm developing a simple C# application, and I'd like to know this: When I connect my application to SQL Server on my PC, I know the connection string (server name, password, etc.), but when I connect it to another PC, the SQL Server connection string is different. Is there a common account in SQL Server that comes with a default account that can connect? I have heard about the `sa` account in SQL Server. What is `sa`?

Original source