生成备案号例如80-027-1-001 规则为：企业编号-所在区号-产品类别-序号

 1 例如：1.ToString("000")数字格式化后为001
 2 
 3 /// <summary>
 4         /// 生成备案号
 5         /// </summary>
 6         /// <returns></returns>
 7         protected string TMaterialNo()
 8         {
 9             string strNo = "";
10             bool flag =false ;
11             List<Model.T_MaterialBackUp> mlist = new BLL.T_MaterialBackUp().GetModelList("CompanyUserID=" + Request["CompanyUserID"].ToString());
12             List<Model.Company_UsersDetails> clist = new BLL.Company_UsersDetails().GetModelList("CompanyUserID=" + Request["CompanyUserID"].ToString());
13             string strflag = Request["CompanyUserID"] + "-0" + clist[0].AreaCode + "-" + ddltype.SelectedValue;
14             if (clist.Count > 0)
15             {
16                 
17                 if (mlist.Count > 0)
18                 {
19                     for (int i = 0; i < mlist.Count; i++)
20                     {
21                         //拆分带"-"分隔符的字符串;
22                         string[] strs = mlist[i].BAK1.Split(new char[] { '-' });
23                         if (ddltype.SelectedValue == strs[2])
24                         {
25                             int no = Convert.ToInt32(strs[3].ToString());
26                             no++;
27                             strNo = strflag + "-" + no.ToString("000");
28                             flag = true;
29                         }                                               
30                     }
31                     if (flag==false)
32                     {
33 
34                       strNo = strflag + "-001";
35                     }
36                 }
37                 else
38                 {
39                     strNo = strflag + "-001";
40                 }
41             }
42             return strNo;
43         }