如何在C＃中对分组列表项进行排序

Question

I have a gropued list item. I want to sort the grouped list item. I have grouped list this,

var groupedStaff = SystemTaskStaff.GroupBy(s => s.StaffId).ToList();
groupedStaff.Sort(); 

I know this is very basic question. Please help me to sort this.

Answer 1

Here is how to sort groups by Item count:

groupedStaff.OrderBy(g=> g.Count()); // ascending

for descending order:

groupedStaff.OrderByDescending(g=> g.Count());