C# Sql Server Connection String

// ODBC DSN

using System.Data.Odbc;

OdbcConnection conn = new OdbcConnection();
conn.ConnectionString =
"Dsn=DsnName;" +
"Uid=UserName;" +
"Pwd=Secret;";
conn.Open();

// ODBC -- Standard Connection

using System.Data.Odbc;

OdbcConnection conn = new OdbcConnection();
conn.ConnectionString =
"Driver={SQL Server};" +
"Server=ServerName;" +
"DataBase=DataBaseName;" +
"Uid=UserName;" +
"Pwd=Secret;";
conn.Open();

// ODBC -- Trusted Connection

using System.Data.Odbc;

OdbcConnection conn = new OdbcConnection();
conn.ConnectionString =
"Driver={SQL Server};" +
"Server=ServerName;" +
"DataBase=DataBaseName;" +
"Uid=;" +
"Pwd=;";
conn.Open();

// or

OdbcConnection conn = new OdbcConnection();
conn.ConnectionString =
"Driver={SQL Server};" +
"Server=ServerName;" +
"DataBase=DataBaseName;" +
"Trusted_Connection=Yes;";
conn.Open();

// OleDb -- Standard Connection

using System.Data.OleDb;

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

// OleDb -- Trusted Connection

using System.Data.OleDb;

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

// OleDb -- via IP Address

using System.Data.OleDb;

OleDbConnection conn = new OleDbConnection();
conn.ConnectionString =
"Driver=SQLOLEDB;" +
"Network Library=DBMSSOCN;" +
"Data Source=xxx.xxx.xxx.xxx,1433;" +
"Initial Catalog=DataBaseName;" +
"User id=UserName;" +
"Password=Secret;";
conn.Open();

// .NET DataProvider -- Standard Connection

using System.Data.SqlClient;

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

// .NET DataProvider -- Trusted Connection

using System.Data.SqlClient;

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

// .NET DataProvider -- via IP Address

using System.Data.SqlClient;

SqlConnection conn = new SqlConnection();
conn.ConnectionString =
"Network Library=DBMSSOCN;" +
"Data Source=xxx.xxx.xxx.xxx,1433;" +
"Initial Catalog=DataBaseName;" +
"User Id=UserName;" +
"Password=Secret;";
conn.Open();