SCPFWBTL/SCP/Code/GetASNBillNum.cs

using System;
using System.Collections.Generic;
using System.Data;
using System.Data.Entity.Migrations;
using System.Linq;
using System.Web;
using CK.SCP.Models;
using CK.SCP.Models.ScpEntity;
using CK.SCP.Common;

namespace SCP.Code
{
    public class GetAsnBillNum : PageBase
    {
        /// <summary>
        /// 获取单据编号
        /// </summary>
        /// <param name="Prefix">单据前缀</param>
        /// <param name="LenSn">流水号长度</param>
        /// <returns></returns>
        public static string GetBillNo(string Prefix, int LenSn)
        {
            using (ScpEntities db = EntitiesFactory.CreateScpInstance())
            {


                int y = DateTime.Now.Year;
                int m = DateTime.Now.Month;
                //int d = DateTime.Now.Day;

                string sYear;
                string sMonth;
                string sValue;

                //string sWhere = "[Prefix]='{0}' and sYear={1} and sMonth={2} and sDay={3}";
                //sWhere = string.Format(sWhere, Prefix, y, m, d);

                string sWhere = "[Prefix]='{0}' and sYear={1} and sMonth={2}";
                sWhere = string.Format(sWhere, Prefix, y, m);

                TA_BillNoType NewmodelBillNoType = new TA_BillNoType();

                TA_BillNoType modelBillNoType =
                    db.TA_BillNoType.SingleOrDefault(p => p.Prefix == Prefix && p.sYear == y && p.sMonth == m);

                //                DataTable dtBillNo = t_BillNo.GetData(sWhere);
                //                DataRow drBillNo = null;

                if (modelBillNoType == null)
                {
                    NewmodelBillNoType.Prefix = Prefix;
                    NewmodelBillNoType.sYear = y;
                    NewmodelBillNoType.sMonth = m;
                    //drBillNo["sDay"] = d;
                    NewmodelBillNoType.sValue = 1;
                    db.TA_BillNoType.Add(NewmodelBillNoType);
                    db.SaveChanges();


                    sYear = NewmodelBillNoType.ToString().Substring(2, 2);
                    sMonth = MyWebString.PadLeftString(NewmodelBillNoType.sMonth.ToString(), '0', 2);
                    //string sDay = drBillNo["sDay"].ToString(); sDay = MyWebString.PadLeftString(sDay, '0', 2);
                    //                string sValue = drBillNo["sValue"].ToString();
                    sValue = "0";

                    sValue = MyWebString.PadLeftString(NewmodelBillNoType.sValue.ToString(), '0', LenSn);
                }
                else
                {
                    modelBillNoType.Prefix = Prefix;
                    modelBillNoType.sYear = y;
                    modelBillNoType.sMonth = m;
                    modelBillNoType.sValue = Convert.ToInt32(modelBillNoType.sValue) + 1;
                    db.TA_BillNoType.AddOrUpdate(modelBillNoType);
                    db.SaveChanges();
                    //                    modelBillNoType = t_BillNo.Edit(dtBillNo.Rows[0]);


                    sYear = modelBillNoType.sYear.ToString().Substring(2, 2);
                    sMonth = MyWebString.PadLeftString(modelBillNoType.sMonth.ToString(), '0', 2);
                    //string sDay = drBillNo["sDay"].ToString(); sDay = MyWebString.PadLeftString(sDay, '0', 2);
                    //                string sValue = drBillNo["sValue"].ToString();
                    sValue = "0";

                    sValue = MyWebString.PadLeftString(modelBillNoType.sValue.ToString(), '0', LenSn);
                }

                //                string sYear = modelBillNoType.ToString().Substring(2, 2);
                //                string sMonth = MyWebString.PadLeftString(modelBillNoType.sMonth.ToString(), '0', 2);
                //                //string sDay = drBillNo["sDay"].ToString(); sDay = MyWebString.PadLeftString(sDay, '0', 2);
                //                //                string sValue = drBillNo["sValue"].ToString();
                //                string sValue = "0";
                //
                //                sValue = MyWebString.PadLeftString(modelBillNoType.sValue.ToString(), '0', LenSn);

                //return Prefix + sYear + sMonth + sDay + sValue;

                return Prefix + sYear + sMonth + sValue;
            }
        }
        /// <summary>
        /// 在指定字串右边填充指定的字串
        /// </summary>
        /// <param name="o_str">要填充的原字串</param>
        /// <param name="p_str">填充的字符</param>
        /// <param name="len">要填充的长度</param>
        /// <returns></returns>
        public static string PadLeftString(string o_str, char p_str, int len)
        {
            string result = "";
            if (o_str.Length > len)
            {
                //result = o_str.Substring(0, len);
                result = o_str;
            }
            else
            {
                int slen = len - o_str.Length;
                result = o_str;
                while (slen > 0)
                {
                    result = p_str.ToString() + result;
                    slen--;
                }
            }

            return result;
        }
    }
}