c# sort collection based on enum

Question

I would like to sort ObservableCollection<myClass> which, except for the other things, contains the enum property such as following:

public IP_Enums.ExportType ExportType { get; set; }

Where the structure of enum looks like following:

    public enum ExportType
    {
        A1,
        A2,
        B1,
        B2,
        B3,
        C1,
        C2,
        D1,
        D2
    }

The problem I have is, that Export types under my ObservableCollection<myClass> are not in an order (as you can see in the enum definition), but like this e.g.:

[0].ExportType = ExportType.B2
[1].ExportType = ExportType.A1
[2].ExportType = ExportType.D2
[3].ExportType = ExportType.A1

I would like to sort my collection based on this ExportType, but I am not quite sure how to do it (as I have [A-Z] character followed by digit [0-9].

Any help would be highly appreciated.

I want to order the same collection, as I am afterwards flushing all elements into a XML file. — Robert J.
– Robert J., Commented Sep 27, 2015 at 17:22
yourCollection.Orderby(x => x.ExportType); is that what you want? — M.kazem Akhgary
– M.kazem Akhgary, Commented Sep 27, 2015 at 17:23
I have already tried myCollection.OrderBy() but it did not order collection by any means — Robert J.
– Robert J., Commented Sep 27, 2015 at 17:24
@stuartd I am not trying to change enum order, I am trying to order all items under my collection in an ascending order - from A1 to D2 — Robert J.
– Robert J., Commented Sep 27, 2015 at 17:25

Dmitry · Accepted Answer · 2015-09-27 17:26:31Z

2

You can create a new ObservableCollection<myClass> collection sorted by the ExportType values:

ObservableCollection<myClass> collection = ...;
collection = new ObservableCollection<MyClass>(collection.OrderBy(item => item.ExportType));

answered Sep 27, 2015 at 17:26

Dmitry

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3 Comments

Robert J. Over a year ago

It's strange, but when I create new collection (not trying to order already existing collection) this suddenly works. Could you please explain why is this?

Dmitry Over a year ago

Does myClass implement IComparable<myClass>?

Robert J. Over a year ago

No, it implements IEquatable<myClass>

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