dmenu.cs

这是一个自动排课软件(包含源码,需求分析,详细设计).希望对你有所帮助.

using System;
using System.Data;
using System.Data.SqlClient;
using System.Collections;
using Entities;
using Search;

namespace DAL.SqlServer
{
    public class DMenu:IDMenu
	{
	    #region 插入实体操作部份
	    /// <summary>
        /// 插入
        /// </summary>
		/// <param name="cmd">Command对象</param>
        /// <param name="menu">实体类对象</param>
        /// <returns>影响的记录行数</returns>
		private int Insert(SqlCommand cmd, Menu menu)
		{
		    cmd.Parameters.Clear();
			cmd.CommandText = "insert into Menu (Menu_Name,Menu_Type_ID,Menu_Url,Parent_ID) values (@Menu_Name,@Menu_Type_ID,@Menu_Url,@Parent_ID)";
			//从实体中取出值放入Command的参数列表
            cmd.Parameters.Add(new SqlParameter("@Menu_Name",menu.MenuName));
            cmd.Parameters.Add(new SqlParameter("@Menu_Type_ID",menu.MenuTypeID));
            cmd.Parameters.Add(new SqlParameter("@Menu_Url",menu.MenuUrl));
            cmd.Parameters.Add(new SqlParameter("@Parent_ID",menu.ParentID));
            return cmd.ExecuteNonQuery();
		}
	    /// <summary>
        /// 不使用事务的插入方法
        /// </summary>
        /// <param name="menu">实体类对象</param>
        /// <returns>影响的记录行数</returns>
	    public int Insert(Menu menu)
		{
		    int result=0;
			string connectionString = System.Configuration.ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
		    using(SqlConnection conn=new SqlConnection(connectionString))
			{
				conn.Open();
                using (SqlCommand cmd = conn.CreateCommand())
                {
                    result=Insert(cmd, menu);
                }
			}
			return result;
		}
		
		/// <summary>
        /// 使用事务的插入方法
        /// </summary>
        /// <param name="connection">实现共享Command的对象</param>
        /// <param name="menu">实体类对象</param>
        /// <returns>影响的记录行数</returns>
        public int Insert(IConnection connection,Menu menu)
        {
			SqlCommand cmd=connection.Command as SqlCommand;
            return Insert(cmd, menu);
        }
		#endregion
		
		#region 删除实体操作
		
		/// <summary>
        /// 删除
        /// </summary>
		/// <param name="cmd">Command对象</param>
        /// <param name="menu">实体类对象</param>
        /// <returns>影响的记录行数</returns>
		private int ExcuteDeleteCommand(SqlCommand cmd, Menu menu)
        {
			cmd.Parameters.Clear();
            cmd.CommandText = "delete Menu where Menu_ID=@Menu_ID";
            //从实体中取出值放入Command的参数列表
		    cmd.Parameters.Add(new SqlParameter("@Menu_ID", menu.MenuID));
            return cmd.ExecuteNonQuery();
			
        }
		/// <summary>
        /// 不使用事务的删除方法
        /// </summary>
        /// <param name="menu">实体类对象</param>
        /// <returns>影响的记录行数</returns>
        public int Delete(Menu menu)
        {
            int result = 0;
			string connectionString = System.Configuration.ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
			using (SqlConnection conn = new SqlConnection(connectionString))
            {
                conn.Open();
                using (SqlCommand cmd = conn.CreateCommand())
                {
				
                    result=ExcuteDeleteCommand(cmd, menu);
                }
            }
            return result;
        }
		
		/// <summary>
        /// 使用事务的删除方法
        /// </summary>
        /// <param name="connection">实现共享Command的对象</param>
        /// <param name="menu">实体类对象</param>
        /// <returns>影响的记录行数</returns>
        public int Delete(IConnection connection,Menu menu)
        {
            int result = 0;
			SqlCommand cmd=connection.Command as SqlCommand;
            result =  ExcuteDeleteCommand(cmd, menu);
            return result;
        }
		
		/// <summary>
        /// 根据查询对象构建过滤条件并使用事务的删除方法
        /// </summary>
        /// <param name="connection">实现共享Command的对象</param>
        /// <param name="menu">实体类对象</param>
        /// <returns>影响的记录行数</returns>
        public int Delete(IConnection connection,MenuSearcher searcher)
        {
            int result = 0;
			string condition=string.Empty;
			SqlCommand cmd=connection.Command as SqlCommand;
			cmd.Parameters.Clear();
		    if(searcher.MenuIDIsValid)
			{
			    condition += " and Menu_ID=@Menu_ID";
		        cmd.Parameters.Add(new SqlParameter("@Menu_ID",searcher.MenuID));
			}
		    if(searcher.MenuNameIsValid)
			{
			    condition += " and Menu_Name=@Menu_Name";
		        cmd.Parameters.Add(new SqlParameter("@Menu_Name",searcher.MenuName));
			}
		    if(searcher.MenuTypeIDIsValid)
			{
			    condition += " and Menu_Type_ID=@Menu_Type_ID";
		        cmd.Parameters.Add(new SqlParameter("@Menu_Type_ID",searcher.MenuTypeID));
			}
		    if(searcher.MenuUrlIsValid)
			{
			    condition += " and Menu_Url=@Menu_Url";
		        cmd.Parameters.Add(new SqlParameter("@Menu_Url",searcher.MenuUrl));
			}
		    if(searcher.ParentIDIsValid)
			{
			    condition += " and Parent_ID=@Parent_ID";
		        cmd.Parameters.Add(new SqlParameter("@Parent_ID",searcher.ParentID));
			}
			if(condition!=string.Empty)
			{
				condition=" where "+condition;
			}
			cmd.CommandText="delete from  Menu "+condition;
            result =  cmd.ExecuteNonQuery();
			
            return result;
        }
		/// <summary>
        /// 根据查询对象构建过滤条件并不使用事务的删除方法
        /// </summary>
        /// <param name="searcher">查询对象</param>
        /// <returns>影响的记录行数</returns>
        public int Delete(MenuSearcher searcher)
        {
            int result = 0;
			string condition=string.Empty;
			string connectionString = System.Configuration.ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
			using (SqlConnection conn = new SqlConnection(connectionString))
            {
                conn.Open();
                using (SqlCommand cmd = conn.CreateCommand())
                {
		            if(searcher.MenuIDIsValid)
			        {
			            condition += " and Menu_ID=@Menu_ID";
		                cmd.Parameters.Add(new SqlParameter("@Menu_ID",searcher.MenuID));
			        }
		            if(searcher.MenuNameIsValid)
			        {
			            condition += " and Menu_Name=@Menu_Name";
		                cmd.Parameters.Add(new SqlParameter("@Menu_Name",searcher.MenuName));
			        }
		            if(searcher.MenuTypeIDIsValid)
			        {
			            condition += " and Menu_Type_ID=@Menu_Type_ID";
		                cmd.Parameters.Add(new SqlParameter("@Menu_Type_ID",searcher.MenuTypeID));
			        }
		            if(searcher.MenuUrlIsValid)
			        {
			            condition += " and Menu_Url=@Menu_Url";
		                cmd.Parameters.Add(new SqlParameter("@Menu_Url",searcher.MenuUrl));
			        }
		            if(searcher.ParentIDIsValid)
			        {
			            condition += " and Parent_ID=@Parent_ID";
		                cmd.Parameters.Add(new SqlParameter("@Parent_ID",searcher.ParentID));
			        }
			        if(condition!=string.Empty)
			        {
				        condition=" where "+condition;
			        }
                    cmd.CommandText="delete from  Menu "+condition;
                    result =  cmd.ExecuteNonQuery();
                }
            }
            return result;
        }
		#endregion
		
		#region 更新实体操作
		
		/// <summary>
        /// 更新
        /// </summary>
		/// <param name="cmd">Command对象</param>
        /// <param name="menu">实体类对象</param>
        /// <returns>影响的记录行数</returns>
		private int ExcuteUpdateCommand(SqlCommand cmd, Menu menu)
		{
		    cmd.CommandText = "update Menu set Menu_Name=@Menu_Name,Menu_Type_ID=@Menu_Type_ID,Menu_Url=@Menu_Url,Parent_ID=@Parent_ID where Menu_ID=@Menu_ID";
			//从实体中取出值放入Command的参数列表
            cmd.Parameters.Add(new SqlParameter("@Menu_Name",menu.MenuName));
            cmd.Parameters.Add(new SqlParameter("@Menu_Type_ID",menu.MenuTypeID));
            cmd.Parameters.Add(new SqlParameter("@Menu_Url",menu.MenuUrl));
            cmd.Parameters.Add(new SqlParameter("@Parent_ID",menu.ParentID));
			cmd.Parameters.Add(new SqlParameter("@Menu_ID", menu.MenuID));
            return cmd.ExecuteNonQuery();
		}
		
		/// <summary>
        /// 不使用事务的更新方法
        /// </summary>
        /// <param name="menu">实体类对象</param>
        /// <returns>影响的记录行数</returns>
	    public int Update(Menu menu)
		{
		    int result=0;
			string connectionString = System.Configuration.ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
			using(SqlConnection conn=new SqlConnection(connectionString))
			{
				conn.Open();
                using (SqlCommand cmd = conn.CreateCommand())
                {
                    result=ExcuteUpdateCommand(cmd, menu);
                }
			}
			return result;
		}
		/// <summary>
        /// 使用事务的更新方法
        /// </summary>
        /// <param name="connection">实现共享Command的对象</param>
        /// <param name="menu">实体类对象</param>
        /// <returns>影响的记录行数</returns>
        public int Update(IConnection connection,Menu menu)
        {
            int result = 0;
			SqlCommand cmd=connection.Command as SqlCommand;
            result =  ExcuteUpdateCommand(cmd, menu);
            return result;
        }
		/// <summary>
        /// 根据查询对象构建过滤条件并不使用事务的更新方法
        /// </summary>
        /// <param name="searcher">查询对象</param>
		/// <param name="newValues">要更新的新值</param>
        /// <returns>影响的记录行数</returns>
	    public int Update(MenuSearcher searcher,MenuSearcher newValues)
		{
		    int result=0;
			string connectionString = System.Configuration.ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
			using(SqlConnection conn=new SqlConnection(connectionString))
			{
				conn.Open();
                using (SqlCommand cmd = conn.CreateCommand())
                {
					//string updateString=GetUpdateString(cmd, newValues)+condition;
					string updateString = string.Empty;
					string condition = string.Empty;
		            if(newValues.MenuIDIsValid)
			        {
			            updateString += ",Menu_ID=@Menu_ID_V";
			            cmd.Parameters.Add(new SqlParameter("@Menu_ID_V",newValues.MenuID));
                    }
		            if(newValues.MenuNameIsValid)
			        {
			            updateString += ",Menu_Name=@Menu_Name_V";
			            cmd.Parameters.Add(new SqlParameter("@Menu_Name_V",newValues.MenuName));
                    }
		            if(newValues.MenuTypeIDIsValid)
			        {
			            updateString += ",Menu_Type_ID=@Menu_Type_ID_V";
			            cmd.Parameters.Add(new SqlParameter("@Menu_Type_ID_V",newValues.MenuTypeID));
                    }
		            if(newValues.MenuUrlIsValid)
			        {
			            updateString += ",Menu_Url=@Menu_Url_V";
			            cmd.Parameters.Add(new SqlParameter("@Menu_Url_V",newValues.MenuUrl));
                    }
		            if(newValues.ParentIDIsValid)
			        {
			            updateString += ",Parent_ID=@Parent_ID_V";
			            cmd.Parameters.Add(new SqlParameter("@Parent_ID_V",newValues.ParentID));
                    }
		            if(searcher.MenuIDIsValid)
			        {
			            condition += " and Menu_ID=@Menu_ID_C";
			            cmd.Parameters.Add(new SqlParameter("@Menu_ID_C",searcher.MenuID));
					}
		            if(searcher.MenuNameIsValid)
			        {
			            condition += " and Menu_Name=@Menu_Name_C";
			            cmd.Parameters.Add(new SqlParameter("@Menu_Name_C",searcher.MenuName));
					}
		            if(searcher.MenuTypeIDIsValid)
			        {
			            condition += " and Menu_Type_ID=@Menu_Type_ID_C";