LINQ获取两个List的交集

1.调用：

UserList = UserList.ToList().Intersect(userIDList, new MyUserComparer()).AsQueryable();

2.需要重写的方法：
public class MyUserComparer : IEqualityComparer<MyUser>
{
public bool Equals(MyUser x, MyUser y)
{
//throw new NotImplementedException();
return x.UserID == y.UserID;
}
public int GetHashCode(MyUser obj)
{
return obj.ToString().GetHashCode();
}
}

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作者：FreeBeer2015
来源：CSDN
原文：https://blog.csdn.net/anpan1045535101/article/details/40588017
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