How to sort generic list?

Question

I need to make ascending sort of generic List. Here is my generic type:

public class ContainerData
{
   private Point pnt;
   private Size size;
   private Double Area;
   private Contour<Point> contour;

   public ContainerData()
   { }

   public ContainerData(ContainerData containerData)
   { 
     this.pnt=containerData.pnt;
     this.size=containerData.size;
     this.Area=containerData.Area;
     this.contour = containerData.contour;
   }

   public Point pointProperty
   {
       get
       {return pnt;}
       set
       {pnt = value;}
   }

   public Size sizeProperty
   {
       get
       {return size;}
       set
       {size = value;}
   }

   public Double AreaProperty
   {
       get
       {return Area;}
       set
       {Area = value;}
   }
   public Contour<Point> ContourProperty
   {
       get
       {return contour;}
       set
       { contour = value; }
   }
}

The ascending sorting have to be made under the value of X coordinate of th Point type.

Here is the class member that sholud be sorted:

 private List<ContainerData> dataOfPreviusImage;

Any idea how can I implement it?

Thank you in advance.

What have you tried? Is [`List.Sort`](http://msdn.microsoft.com/en-us/library/3da4abas.aspx) that difficult to find? — Jon, Oct 11 '12 at 08:12
If you dont want to use LINQ I suggest you to read this msdn page: http://msdn.microsoft.com/en-us/library/w56d4y5z.aspx — Gianni B., Oct 11 '12 at 08:13
You can also look into this [link](http://stackoverflow.com/questions/289010/c-sharp-list-sort-by-x-then-y/) also — Neeraj Kumar Gupta, Oct 11 '12 at 08:24

score 9 · Accepted Answer · edited Oct 11 '12 at 08:19

9

Use Enumerable.OrderBy :

List<ContainerData> dataOfPreviusImage = GetSomeData();
var sorted = dataOfPreviusImage.OrderBy(cd => cd.pointProperty.X);

edited Oct 11 '12 at 08:19

Tim Schmelter

450,073
74
686
939

answered Oct 11 '12 at 08:12

Antonio Bakula

20,445
6
75
102

score 2 · Answer 2 · answered Oct 11 '12 at 08:13

2

Make a Compare Function :

private int SortFunction(ContainerData obj1, ContainerData obj2)
{
    return obj1.pointProperty.X.CompareTo(obj2.pointProperty.X);
}

And call it like this:

dataOfPreviusImage.Sort(new Comparison<ContainerData>(SortFunction));

answered Oct 11 '12 at 08:13

abc

2,285
5
29
64

1

inline version: `dataOfPreviusImage.Sort((obj1, obj2) => obj1.pointProperty.X.CompareTo(obj2.pointProperty.X));` – Paolo Moretti Oct 11 '12 at 08:30

score 1 · Answer 3 · answered Oct 11 '12 at 08:15

1

To help you along your way, your ContainerData class should implement IComparable and ideally IEquateable as well.

answered Oct 11 '12 at 08:15

onefootswill

3,707
6
47
101

How to sort generic list?

3 Answers3