如何实现在ComboBox的下拉列表中显示TreeView树结构（或者与TreeView类似的数结构）?

怎么样同数据表相结合，表内为专业分类。一个字段存代码，一个存名称，同会计科目分类似怎么样处理？
以下是一国标数据表：代码类名称,专业技术职务 （GB/T 8561-88）,AJ,3,False,True
  代码项              代码项描述                                父指针              子指针   简称                                      简拼                    01                  高等学校教师...                        AJ                  1        高等学校教师...                        GDXXJS           
  011                 教授                                      01                  0        教授                                      JS             
  012                 副教授                                    01                  0        副教授                                    FJS               
  013                 讲师                                      01                  0        讲师                                      JS          
  014                 助教                                      01                  0        助教                                      ZJ                     
  02                  中等专业学校教师...                    AJ                  1        中等专业学校教师...                    ZDZYXXJS       
  022                 中专高级讲师                              02                  0        中专高级讲师                              ZZGJJS           
  023                 中专讲师                                  02                  0        中专讲师                                  ZZJS                       
  024                 中专助理讲师                              02                  0        中专助理讲师                              ZZZLJS          
  025                 中专教员                                  02                  0        中专教员                                  ZZJY                        
  03                  技工学校教师(讲师)...                AJ                  1        技工学校教师(讲师)...                JGXXJSJS                     
  032                 中技高级讲师                              03                  0        中技高级讲师                              ZJGJJS                    
  033                 中技讲师                                  03                  0        中技讲师                                  ZJJS                 
  034                 中技助理讲师                              03                  0        中技助理讲师                              ZJZLJS                    
  035                 中技教员                                  03