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asp.netsql無限極分類實例程序

2019-11-14 16:49:33
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數據庫結構

 代碼如下復制代碼
create table category
(
    id                  int,               
    clsno            nvarchar(50),       
    clsname       nvarchar(50),                
    clslist            nvarchar(250),         
    clsparentno  nvarchar(50),    
    clslistlen       int
)

 

asp.net程序 http://www.111cn.net/net/net/51292.htm

 代碼如下復制代碼

/**********************************************************************************
 * 程序說明:     生成靜態頁面類(復雜型.有參數)
 * 創建日期:     2009.6.13
 * 修改日期:     2010.12.18
 * 程序制作:     agui
 * 聯系方式:     mailto:354990393@QQ.com 
 * ********************************************************************************/
using System;
using System.Collections;
using System.Collections.Generic;
using System.Text;
using System.Data;
using PlugNT.Safe;
using PlugNT.Database.Common;
using PlugNT.Database.Common.Simple;
using PlugNT.Custom;
using PlugNT.Cms.Model;

namespace PlugNT.Cms.DAL
{
    /// <summary>
    /// 無限極分類(由于字段的長度只能嵌套25層,且只能用于少量重要型的數據存儲)
    /// </summary>
    public class Category
    {


        PRivate static string currTableName = WebConfig.TablePrefix + "category";


        #region 獲取


        /// <summary>
        /// 獲取clsno
        /// </summary>
        /// <param name="clsno"></param>
        /// <returns></returns>
        public string GetClsno(int id)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("select top 1 clsno from " + currTableName);
            strSql.Append(" where id=" + id.ToString());
            return Convert.ToString(DbHelper.GetSingle(strSql.ToString()));

        }

        /// <summary>
        /// 獲取clslist
        /// </summary>
        /// <param name="clsname"></param>
        /// <returns></returns>
        public string GetClslistByName(string clsname)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("select top 1 clslist from " + currTableName);
            strSql.Append(" where clsname='" + StringHelper.SqlFilter(clsname) + "'");
            return Convert.ToString(DbHelper.GetSingle(strSql.ToString()));
        }

        /// <summary>
        /// 獲取clslist
        /// </summary>
        /// <param name="clsno"></param>
        /// <returns></returns>
        public string GetClslistByNo(string clsno)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("select top 1 clslist from " + currTableName);
            strSql.Append(" where clsno='" + StringHelper.SqlFilter(clsno) + "'");
            return Convert.ToString(DbHelper.GetSingle(strSql.ToString()));
        }

        /// <summary>
        /// 根據父級編號得到clsname
        /// </summary>
        /// <param name="clsno"></param>
        /// <returns></returns>
        public string GetClsnameByParentNo(string clsno)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("Select top 1 clsname From " + currTableName);
            strSql.Append(" Where clsparentno='" + StringHelper.SqlFilter(clsno) + "'");
            return DbHelper.GetSingle(strSql.ToString()).ToString();
        }

        /// <summary>
        /// 得到父級clsno
        /// </summary>
        /// <param name="clsno"></param>
        /// <returns></returns>
        public string GetParentClsno(string clsno)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("Select top 1 clsparentno From " + currTableName);
            strSql.Append(" Where clsno='" + StringHelper.SqlFilter(clsno) + "'");
            return DbHelper.GetSingle(strSql.ToString()).ToString();
        }

 

        /// <summary>
        /// 得到模型
        /// </summary>
        /// <param name="clsno"></param>
        /// <returns></returns>
        public CategoryInfo GetCategoryInfo(string clsno)
        {
            DataTable dt = GetCategoryTable(clsno);
            CategoryInfo model=null;
            if(dt.Rows.Count>0)
            {
                DataRow dr=dt.Rows[0];
                model=new CategoryInfo();
                model.id=(int)dr["id"];
                model.clsno=dr["clsno"].ToString();
                model.clsname=dr["clsname"].ToString();
                model.clslist=dr["clslist"].ToString();
                model.clsparentno=dr["clsparentno"].ToString();
                model.clslistlen=Int32.Parse(dr["clslistlen"].ToString());
            }
            return model;

        }

        /// <summary>
        /// 得到類別表
        /// </summary>
        /// <param name="clsno"></param>
        /// <returns></returns>
        public DataTable GetCategoryTable(string clsno)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("Select top 1 * From " + currTableName);
            strSql.Append(" Where clsno='" + StringHelper.SqlFilter(clsno) + "'");
            DataTable dt = DbHelper.TabQuery(strSql.ToString());
            return dt;
        }
        #endregion

 

        #region 添加,修改,刪除操作

        /// <summary>
        /// 添加一個菜單項
        /// </summary>
        /// <param name="model"></param>
        /// <returns></returns>
        public bool Add(CategoryInfo model)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("insert into " + currTableName);
            strSql.Append(" (clsno,clsname,clslist,clsparentno,clslistlen)");

            strSql.Append(" values (");
            strSql.Append("'" + StringHelper.SqlFilter(model.clsno) + "',");
            strSql.Append("'" + StringHelper.SqlFilter(model.clsname) + "',");
            strSql.Append("'" + StringHelper.SqlFilter(model.clslist) + "',");
            strSql.Append("'" + StringHelper.SqlFilter(model.clsparentno) + "',");
            strSql.Append(" " +model.clslistlen );

            strSql.Append(")");

            return (DbHelper.ExecuteSql(strSql.ToString()) > 0) ? true : false;
        }

        /// <summary>
        /// 編輯一個菜單項
        /// </summary>
        /// <param name="model"></param>
        /// <param name="isSubModel">是否下級菜單</param>
        /// <returns></returns>
        public bool Update(CategoryInfo model, bool isSubModel)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("update " + currTableName);
            strSql.Append(" set ");
            if (!isSubModel)
            {
                strSql.Append("clsname='" + StringHelper.SqlFilter(model.clsname) + "',");
                strSql.Append("clsparentno='" + StringHelper.SqlFilter(model.clsparentno) + "',");
            }
            strSql.Append("clslist='" + StringHelper.SqlFilter(model.clslist) + "',");
            strSql.Append("clslistlen=" + model.clslistlen );
            strSql.Append(" where clsno='" + StringHelper.SqlFilter(model.clsno) + "' ");

            //同步更新子菜單項
            DataTable  dt = GetOrderSubList(model.clsno);
            if (dt.Rows.Count > 0)
            {
                foreach (DataRow dr in dt.Rows)
                {
                    CategoryInfo imodel = new CategoryInfo();
                    string Subclslist = model.clslist + dr["clsno"].ToString().Trim() + ",";
                    imodel.clslist = Subclslist;
                    imodel.clslistlen = model.clslistlen + 1;
                    Update(imodel,true);
                }
            }
            return (DbHelper.ExecuteSql(strSql.ToString()) > 0) ? true : false;
        }

        /// <summary>
        /// 刪除菜單項
        /// </summary>
        /// <param name="clsno"></param>
        /// <returns></returns>
        public bool Delete(string clsno)
        {
            StringBuilder strSql = new StringBuilder();
            DataTable dt = GetListRow(clsno);
            if (dt.Rows.Count > 0)
            {
                strSql.Append("Delete From " + currTableName);
                strSql.Append(" where clslist like '" + dt.Rows[0]["clslist"].ToString().Trim() + "%'");
            }
            return (DbHelper.ExecuteSql(strSql.ToString()) > 0) ? true : false;
        }


        #endregion

        #region 獲取列表

        /// <summary>
        /// 判斷一個父類編號是否存在
        /// </summary>
        public bool ParentExists(string clsno)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("select count(1) from " + currTableName);
            strSql.Append(" where clsparentno='" + StringHelper.SqlFilter(clsno) + "'");
            return DbHelper.Exists(strSql.ToString());
        }

        /// <summary>
        /// 獲取全部菜單名及列表
        /// </summary>
        /// <returns></returns>
        public DataTable GetList()
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("select id,clsno,clsname,clslist,clsparentno,clslistlen from " + currTableName);
            return DbHelper.TabQuery(strSql.ToString());
            //clsno,clsname,clslist,clslistlen,indexfile,listfile,showfile,createpath,ismap
        }

        /// <summary>
        /// 獲取菜單列表(排序)
        /// </summary>
        /// <returns></returns>
        public DataTable GetOrderList()
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("select id,clsno,clsname,clslist,clsparentno,clslistlen from " + currTableName);
            strSql.Append(" Order By clslist Asc"); // Order By clsorder Asc,clslist Asc
            return DbHelper.TabQuery(strSql.ToString());
        }

        /// <summary>
        /// 獲取clsno的包含菜單列表
        /// </summary>
        /// <param name="clsno"></param>
        /// <returns></returns>
        public DataTable GetListRow(string clsno)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("select top 1 clsno,clslist,clslistlen from " + currTableName);
            strSql.Append(" where clsno='" + StringHelper.SqlFilter(clsno) + "' ");
            return DbHelper.TabQuery(strSql.ToString());
        }

        /// <summary>
        /// 獲取該菜單項的所有子菜單項(因為clslist在表中都不同所以按clsorder排序無效果)
        /// </summary>
        /// <param name="clsno"></param>
        /// <returns></returns>
        public DataTable GetOrderSubList(string clsno)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("select id,clsno,clsname,clslist,clsparentno,clslistlen from " + currTableName);
            strSql.Append(" where clsparentno='" + StringHelper.SqlFilter(clsno) + "' ");
            strSql.Append(" Order By clslist Asc");
            return DbHelper.TabQuery(strSql.ToString());
        }

        #endregion

        #region contact me
        public string Help()
        {
            return @"mailto:354990393@qq.com";
        }
        #endregion
    }

}


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