利用DataSet对数据库进行修改

class Program
    {
        static void Main(string[] args)
        {
            SqlConnection thisConnection = new SqlConnection(
                 @"Data Source=.\SQLEXPRESS;" +
                 @"AttachDbFilename='C:\SQL Server 2000 Sample Databases\NORTHWND.MDF';"
                 +
                 @"Integrated Security=true;Connect Timeout=30;User Instance=true");


            SqlDataAdapter thisAdapter = new SqlDataAdapter(
                "select CustomerID, CompanyName from Customers", thisConnection);
            //将SqlCommandBuilder与thisAdapter关联，这样就不用自己写sql的更新语句了
            SqlCommandBuilder thisBuilder = new SqlCommandBuilder(thisAdapter);
            //注::  DataSet、DataTable、DataRow、DataColumn是表中的数据在内存中的表示。为了更新数据库，需要调用Update()方法
            DataSet thisDataSet = new DataSet();
            thisAdapter.Fill(thisDataSet, "Customers");
            Console.WriteLine("Name before change:{0}", thisDataSet.Tables["Customers"].Rows[9]["CompanyName"]);


            thisDataSet.Tables["Customers"].Rows[9]["CompanyName"] = "Acme, Inc.";
            thisAdapter.Update(thisDataSet, "Customers");


            Console.WriteLine("name after change:{0}", thisDataSet.Tables["Customers"].Rows[9]["CompanyName"]);
            thisConnection.Close();
            Console.Write("Program finished, press Enter/Return to continue:");
            Console.ReadLine();
        }
    }