C#数据库连接字符串——Text

1. ODBC DSN
2. ODBC without DSN
3. OleDb with MS Jet

// ODBC DSN

using System.Data.Odbc;

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

// ODBC without DSN

using System.Data.Odbc;

OdbcConnection conn = new OdbcConnection();
conn.ConnectionString =
 "Driver={Microsoft Text Driver (*.txt; *.csv)};" +
 "Dbq=C:/MyPath/;" +
 "Extensions=asc,csv,tab,txt;";
conn.Open();

// Use: sql = "Select * From MyTextFile.txt"

// OleDb with MS Jet

using System.Data.OleDb;

OleDbConnection conn = new OleDbConnection();
conn.ConnectionString =
      "Driver=Microsoft.Jet.OLEDB.4.0;" +
      "Data Source=C:/MyPath/;" +
      "Extended Properties=" +
        @"""text;HDR=Yes;FMT=Delimited""";
conn.Open();