C#中string和StringBuilder的区别 https://www.cnblogs.com/reggieqiao/p/5902149.html

C# 文件类中 File ，FileInfo 类的主要区别 https://www.cnblogs.com/youguess/p/4635644.html

C#常用快捷键 https://www.cnblogs.com/wmm15738807386/p/6723272.html

C# 枚举（Enum） http://www.runoob.com/csharp/csharp-enum.html

C#中数组Array，ArrayList，泛型List详细对比 http://www.jb51.net/article/86782.htm https://msdn.microsoft.com/zh-cn/library/system.array(v=vs.110).aspx

C#数据库连接 http://www.cnblogs.com/aidd2008/archive/2008/12/05/1348695.html

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data;
using System.Data.SqlClient;

namespace ConsoleApplication2
{
    class Program
    {
        static void Main(string[] args)
        {
            string connetionString = null;
            SqlConnection cnn ;
            connetionString = "Data Source=YOUR_DB_INSTANCE;Initial Catalog=DB_NAME;User ID=YOUR_USR_ID;Password=YOUR_PASSWORD";

            string sql = null;
            SqlCommand command;
            SqlDataReader dataReader;
            sql = "YOUR_SQL";

            cnn = new SqlConnection(connetionString);
            try
            {
                cnn.Open();
                Console.WriteLine ("Connection Open ! ");
                command = new SqlCommand(sql, cnn);
                dataReader = command.ExecuteReader();
                while (dataReader.Read())
                {
                    Console.WriteLine(dataReader.GetValue(0) + " - " + dataReader.GetValue(1) + " - " + dataReader.GetValue(2));
                }
                dataReader.Close();
                command.Dispose();
                cnn.Close();
            }
            catch (Exception ex)
            {
                Console.WriteLine("Can not open connection ! ");
            }
        }
    }
}

C#命名空间 http://www.runoob.com/csharp/csharp-namespace.html

ODBC、OLEDB和ADO之间的关系
http://blog.csdn.net/wangyy130/article/details/27100809 http://csharp.net-informations.com/data-providers/csharp-ado.net-connection.htm

一个C#解决方案中各文件夹存放了些什么 https://www.cnblogs.com/xiao9426926/p/6019234.html

SOAP Webserver 与 Restful Webserver 区别 https://www.cnblogs.com/hyhnet/archive/2016/06/28/5624422.html

C# LINQ https://www.cnblogs.com/JackFu/p/8070361.html

C# 单元测试 https://www.cnblogs.com/KevinMO/articles/5657747.html

C# hook https://msdn.microsoft.com/en-us/library/windows/desktop/ms632589(v=vs.85).aspx https://www.codeproject.com/Articles/18638/Using-Window-Messages-to-Implement-Global-System-H