Bll/BBuyFormSort.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data;
using Dal;
using Model;

namespace Bll
{
    public class BBuyFormSort
    {
        DBuyFormSort idp = new DBuyFormSort();
        public DataTable GetSortTree(int Sortid, bool returnimg,ref int iCanlayer)
        {
            DataTable sourcedt = idp.GetList();
            DataTable tardt = sourcedt.Clone();
            GetSortTree2(sourcedt, tardt, Sortid, returnimg, 0,ref iCanlayer);

            return tardt;
        }
        public string GetPsAddress(int PS_Id)
        {
            return idp.GetPsAddress(PS_Id);
        }
        private void GetSortTree2(DataTable sourcedt, DataTable returndt, int Sortid, bool returnimg, int layer, ref int iCanlayer)
        {
            if (layer < iCanlayer || iCanlayer == 0)
            {
                DataView dv = sourcedt.DefaultView;
                dv.RowFilter = " PS_Parentid=" + Sortid.ToString();
                foreach (DataRowView drv in dv)
                {
                    StringBuilder strapp = new StringBuilder();

                    if (returnimg)
                    {
                        for (int i = 0; i < layer; i++)
                        {
                            strapp.Append("<img src='../images/kb.gif' border='0' width='20' align='absmiddle' />");
                        }
                        if (layer != 0)
                        {
                            strapp.Append("<img src='../images/plus1.gif' border='0' align='absmiddle' />");
                        }
                    }
                    else
                    {
                        for (int i = 0; i < layer-1; i++)
                        {
                            strapp.Append("┃");
                        }
                        if (layer != 0)
                        {
                            strapp.Append("┣");
                        }
                    }
                    drv["PS_Name"] = strapp.ToString() + drv["PS_Name"].ToString();
                    drv["PS_Dep"] = layer;
                    returndt.ImportRow(drv.Row);