topic Re: Sorting selected features in .NET Maps SDK Questions

Sorting selected features

MassimoMazzanti — Thu, 22 Feb 2018 19:42:03 GMT

How can I sort a list of selected features based on a field value (i.e. the field name is "cityname")?

My code is this:

...

FeatureQueryResult queryResult = await featureTable.QueryFeaturesAsync(queryParams, QueryFeatureFields.LoadAll);
var features = queryResult.ToList();
// ... here I need to sort the features list

Many thanks

Massimo

Re: Sorting selected features

NagmaYasmin — Thu, 22 Feb 2018 20:07:18 GMT

Hi Massimo,

You may user features.Sort() method by defining the Comparer, for your case it would be "cityname".

You may take a look at this site: List(T).Sort Method (System.Collections.Generic)

Hope that helps,

Nagma

Re: Sorting selected features

dotMorten_esri — Thu, 22 Feb 2018 21:59:51 GMT

You can use LINQ to perform any form of sorting:

var sortedResults = queryResult.OrderBy(f=>f.Attributes["FieldName"])

However you might be better off sorting up front in the query:

var parameters = new Data.QueryParameters();
parameters.OrderByFields.Add(new Data.OrderBy("FieldName", Data.SortOrder.Ascending);

Re: Sorting selected features

MassimoMazzanti — Fri, 23 Feb 2018 07:36:34 GMT

The LINQ solution

var sortedResults = queryResult.OrderBy(f=>f.Attributes["FieldName"])

is perfetct for me.

Many thanks

Massimo

Re: Sorting selected features

MassimoMazzanti — Fri, 23 Feb 2018 07:47:31 GMT

Thanks for the help. It is correct, but the solution proposed by Morten Nielsen is simpler and more suitable for my needs.

Best regards

Massimo