using System;
using System.Data.SqlClient;
namespace CommandDemo
{
  class Program
  {
    static void Main(string[] args)
    {
      //創(chuàng)建數據庫
      string constr = "Server = .; user=name;pwd=mima;database=mysql";
      SqlConnection myCon = new SqlConnection(constr);
      try
      {
        myCon.Open();
        /*創(chuàng)建一個表
        string sql = "select * form mytable01";
        SqlCommand myCom = new SqlCommand(sql, myCon);
        myCom.CommandTimeout = 2; //出錯的等待時間，2s內沒有成功就認為出錯了 
        Console.WriteLine("創(chuàng)建對象成功");*/
        /*-------更改數據 ExcuteNonquery 插入語句舉例----------
        myCon.Open();
        //添加數據
        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("去數據庫查看，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();
    }
  }
}