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.

If you dont want to use LINQ I suggest you to read this msdn page: msdn.microsoft.com/en-us/library/w56d4y5z.aspx — Gianni B.
– Gianni B., Commented Oct 11, 2012 at 8:13

Tim Schmelter · Accepted Answer · 2012-10-11 08:19:18Z

9

Use Enumerable.OrderBy :

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

edited Oct 11, 2012 at 8:19

Tim Schmelter

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answered Oct 11, 2012 at 8:12

Antonio Bakula

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Comments

abc · Accepted Answer · 2012-10-11 08:13:23Z

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));

inline version: dataOfPreviusImage.Sort((obj1, obj2) => obj1.pointProperty.X.CompareTo(obj2.pointProperty.X));

onefootswill · Accepted Answer · 2012-10-11 08:15:50Z

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

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