如何使用 Linq 使用另一个列表的值对列表进行排序

Question

I have a list of parameters:

List<double> parameters = new List<double>() { 3.56, 8.9, 1.7, 0.5, 4.69 };

And a list of generic objects:

List<object> objects= new List<object>() { objA, objB, objC, objD, objE };

How can I sort "objects" list accordingly with the sorting of "parameters" list?

Answer 1

Although you accepted an answer, it's still fun to show a not a well-known method, but faster than any and a one-liner. But you have to start with arrays:

var parameters = new [] { 3.56, 8.9, 1.7, 0.5, 4.69 };
var objects = new [] { "objA", "objB", "objC", "objD", "objE" };

Array.Sort(parameters, objects);

Now objects is persistently sorted according to the sort order of parameters :

objD
objC
objA
objE
objB

Answer 2

You can use the Linq function OrderBy to sort the objects using their respective index in the parameters list as a key.

List<double> parameters = new List<double>() { 3.56, 8.9, 1.7, 0.5, 4.69 };
List<object> objects = new List<object>() { objA, objB, objC, objD, objE };

objects = objects.OrderBy(x => parameters[objects.IndexOf(x)]).ToList();