c#中连接SQL Server数据库

        using System;
        using System.IO;
        using System.Data.OleDb;
        namespace ConsoleDBDemo
        {
            /// <summary>
            /// Class1 的摘要说明。
            /// </summary>
            class ConnectionClass
            {
                /// <summary>
                /// 应用程序的主入口点。
                /// </summary>
                [STAThread]
                static void Main(string[] args)
                {
                    string strCon = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=DataBase.mdb";
                    // 定义连接
                    OleDbConnection MyCon = new OleDbConnection(strCon);
                    // 打开连接
                    MyCon.Open();
                    // 执行命令
                    string strSQL = "select * from ADODemo";
                    OleDbCommand MyCom = new OleDbCommand(strSQL, MyCon);
                    // 读取数据库记录，只能向后读取记录，不能修改记录，读取速度非常快
                    OleDbDataReader MyDataReader = MyCom.ExecuteReader();
                    Console.WriteLine("开始读取数据库信息");
                    while (MyDataReader.Read())
                    {
                        Console.WriteLine("姓名：{0:10} 年龄：{1}", MyDataReader["姓名"].ToString(), MyDataReader["年龄"].ToString());
                    }
                    MyDataReader.Close();
                    MyCon.Close();
                    Console.ReadLine();
                }
            }
        }