using System;
using System.Data.SqlClient;
namespace CommandDemo
{
  class Program
  {
    static void Main(string[] args)
    {
      //創(chuàng)建數(shù)據(jù)庫
      string constr = "Server = .; user=name;pwd=mima;database=mysql";
      SqlConnection myCon = new SqlConnection(constr);
      try
      {
        myCon.Open();
        /*創(chuàng)建一個(gè)表
        string sql = "select * form mytable01";
        SqlCommand myCom = new SqlCommand(sql, myCon);
        myCom.CommandTimeout = 2; //出錯(cuò)的等待時(shí)間，2s內(nèi)沒有成功就認(rèn)為出錯(cuò)了 
        Console.WriteLine("創(chuàng)建對(duì)象成功");*/
        /*-------更改數(shù)據(jù) ExcuteNonquery 插入語句舉例----------
        myCon.Open();
        //添加數(shù)據(jù)
        string sql = "insert mytable01(name,gender,age,department)values('姓名'，'男'，35,'部門')";
        SqlCommand myCom = new SqlCommand(sql, myCon);
        myCom.ExecuteNonQuery();
        Console.WriteLine("去數(shù)據(jù)庫查看，已完成");
        */
        //ExcuteScalar  獲得最大值舉例
        myCon.Open();
        string sql = "select max(age) from mytable01";
        SqlCommand myCom = new SqlCommand(sql,myCon);
        Console.WriteLine("年齡最大的是："+myCom.ExecuteScalar()+"歲");
      }
      catch(Exception ex)
      {
        Console.WriteLine(ex.Message.ToString());
      }
      finally
      {
        myCon.Close();
      }
      Console.Read();
    }
  }
}