三层架构之数据库访问层完全篇(C#)

三层架构之数据库访问层完全篇(C#)

g System;

using System.Data;

using System.Data.SqlClient;

using System.Configuration;

namespace DbBase

{

public abstract class Base

{

#region "Fields of base calss"

protected static string strConn = ConfigurationSettings.AppSettings["strConnection"];

protected static string strSQL;

#endregion

#region "Properties of base class"

}

#endregion

#region "Functions of base class"

public Base()

{

//

// TODO: Add constructor logic here

//

}

/// <summary>

/// executing SQL commands

/// </summary>

/// <param name="strSQL">string</param>

/// <returns>return int</returns>