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  • ADO.NET

    <connectionStrings>
    <add name="connString" connectionString="Data Source=FRED;Initial Catalog=AdventureWorks2017;Integrated Security=SSPI"/>
    </connectionStrings>
      static void ADO()
            {
                string connString = ConfigurationManager.ConnectionStrings["connString"].ToString();
                using (SqlConnection conn = new SqlConnection(connString))
                {
                    if(conn.State!=ConnectionState.Open)
                    {
                        conn.Open();
                    }
    
                    string selectSQL = $"select top(100) SalesOrderID,SalesOrderDetailID,CarrierTrackingNumber," +
                        "OrderQty,ProductID,SpecialOfferID,UnitPrice,UnitPriceDiscount,LineTotal,rowguid," +
                        "ModifiedDate from sales.SalesOrderDetail";
                    using (SqlCommand cmd = new SqlCommand(selectSQL, conn))
                    {
                        SqlDataReader dataReader = cmd.ExecuteReader();
                        while(dataReader.Read())
                        {
                            Console.WriteLine(dataReader[0] + "," + dataReader[1] + "," + dataReader[2] + "," + dataReader[3] + "," +
                                dataReader[4] + "," + dataReader[5] + "," + dataReader[6] + "," + dataReader[7] + "," + dataReader[8] + "," +
                                dataReader[9] + "," + dataReader[10]);
                        }
                    }
                }
            }
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  • 原文地址:https://www.cnblogs.com/Fred1987/p/10891045.html
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