在DataGrid中合并单元格行

最近在做项目的时候经常遇到要合并单元格的情况，发现这个东西.net中并没有现成的方法，研究了一下，总结了两种方法。
这个主要都是行合并的，有以下两种情况
1、多行合并为一行，其中将某个或某几个单元格的内容合并起来
     原始样式：
            column1     column2
                1                    a
                1                    b
                1                    c
                1                    d
                2                    q
                2                    w
                2                    e
      需要效果：
            column1        column2
                1                    a\b\c\d
                2                    q\w\e
      代        码： 
                 

     private void DataGrid_CaseTeamList_Bind() 
 

2、将Datagrid中的某些相同的单元格合并
        原始样式：    
                Column1            Column2
                    1                                a
                    1                                b
                    1                                c
                     2                                x
                     2                                y
                      2                               z
        需要效果：
                Column1            Column2
                                                     a
                       1                            b
                                                     c
_____________________________
                                                      x
                        2                            y
                                                       z

        代        码：
                

        }

        以上两种方法可合并使用