c# 自动生成编号

/// <summary>
        /// 获取编号
        /// </summary>
        /// <param name="parentCode"></param>
        /// <returns></returns>
        public string GetCode(string parentCode)
        {
            string code = "0001";
            string d = "D-";
            string strcode = "";
            BaseService<Sys_Dept> bs = new BaseService<Sys_Dept>();
            List<Sys_Dept> list = bs.Query(p => p.Pid == parentCode, 1, " DeptCode Desc ");
            if (list.Count > 0)
            {
                if (parentCode == "0")
                {
                    var model = list.First();
                    var lastNum = model.DeptCode.Substring(model.DeptCode.Length - 4, 4);
                    strcode = d + ((Convert.ToInt32(lastNum) + 1).ToString().PadLeft(4, '0'));
                }
                else
                {
                    var model = list.First();
                    var lastNum = model.DeptCode.Substring(model.DeptCode.Length - 4, 4);
                    strcode = parentCode + ((Convert.ToInt32(lastNum) + 1).ToString().PadLeft(4, '0'));
                }

            }
            else
            {
                //初始化值

                if (parentCode == "0")
                {
                    strcode = d + code;
                }
                else
                {
                    strcode = parentCode + code;
                }

            }

            return strcode;
        }

标签：string,c#,list,parentCode,生成,DeptCode,编号,model,strcode
来源： https://blog.csdn.net/qq_39895658/article/details/121167886