linq in not in

标签：ar   sp   on   c   r   bs   rom   select   list   

1、not in：lstDown中的DownID属性值不在lstDownfb中的DownID

var  lstDown2 = (from d in lstDown
                          where !(from d2 in lstDownfb select d2.DownID).Contains(d.DownID)
                          select d).ToList();

2、in：lstDown中的DownID属性值在lstDownfb中的DownID

var  lstDown2 = (from d in lstDown
                          where (from d2 in lstDownfb select d2.DownID).Contains(d.DownID)
                          select d).ToList();

linq in not in

标签：ar   sp   on   c   r   bs   rom   select   list   

原文地址：http://www.cnblogs.com/DJYBlog/p/3964746.html