回忆孔先生
using System;using System.Data;using System.Data.Common;namespace kongyiji
{
interface IHui
{
void Print(); void Print(int step);
} /// /// 抽象基类，实现通用的草字头输出 /// abstract class AHui: IHui { IHui i; private IDbCommand comm; private IDbConnection conn; private DbProviderFactory _dbFac; private IDbDataParameter pram; public AHui(DbProviderFactory DbFac) { Console.WriteLine("艹"); _dbFac = DbFac; } public abstract void Print(); protected void SaveSwitch(string hui_type) { conn = _dbFac.CreateConnection(); conn.ConnectionString = @"Data Source=localhost;Initial Catalog=local_db;Persist Security Info=True;User ID=sa;Password=123456789"; comm = conn.CreateCommand(); comm.CommandText = "INSERT INTO LOG(hui_type) VALUES(@hui_type);"; pram = comm.CreateParameter(); pram.DbType = DbType.String; pram.ParameterName = "@hui_type"; pram.Value = hui_type; //conn.Open(); //comm.ExecuteNonQuery(); //conn.Close(); } public void Print(int step) { i = HuiFactory.Hui(_dbFac,step); i.Print(); } } /// /// 回字写法 /// class SelectHui: AHui { string _hui; public SelectHui(string select_hui, DbProviderFactory DbFac) : base(DbFac) { _hui = select_hui; } public override void Print() { Console.WriteLine(_hui); SaveSwitch(_hui); } } class HuiFactory { public static IHui Hui(DbProviderFactory DbFac,int step) { IHui temp = null; switch(step) { case 1: temp = new SelectHui("回", DbFac); break; case 2: temp = new SelectHui("囘", DbFac); break; case 3: temp = new SelectHui("囬", DbFac); break; case 4: temp = new SelectHui("廻", DbFac); break; default: temp = new SelectHui("廻", DbFac); break; } return temp; } } class Program { static void Main(string[] args) { DbProviderFactory fac = DbProviderFactories.GetFactory("System.Data.SqlClient"); IHui i = HuiFactory.Hui(fac,4); i.Print(); i.Print(2); } }
}