把"STATUS"的if 改换成else if 就可以了!
private   void   dgvNote_CellFormatting(object   sender,   DataGridViewCellFormattingEventArgs   e) 
                { 
                        if   (this.dgvNote.Columns[e.ColumnIndex].Name   ==   "TYPE ") 
                        { 
                                if   (object.Equals(e.Value,   0)) 
                                        e.Value   =   "通知 "; 
                                else   if   (object.Equals(e.Value,   1)) 
                                        e.Value   =   "任务 "; 
                                else   if   (object.Equals(e.Value,   2)) 
                                        e.Value   =   "请示 "; 
                                else   if   (object.Equals(e.Value,   3)) 
                                        e.Value   =   "交流 "; 
                                else   if   (object.Equals(e.Value,   4)) 
                                        e.Value   =   "回复 "; 
                        } 
                        else if   (this.dgvNote.Columns[e.ColumnIndex].Name== "STATUS ") 
                        { 
                                if   (object.Equals(e.Value,   0))   
                                        e.Value   =   "未查看 "; 
                                else   if   (object.Equals(e.Value,   1))   
                                        e.Value   =   "已查看 "; 
                        } 
                }