topic Obtaining Results from a IdentifyResult in ArcGIS API for Silverlight Questions

Obtaining Results from a IdentifyResult

jonataspovoas — Thu, 17 Feb 2011 13:03:51 GMT

Hi,
I'm developing an application, and in it i get information to populate a DataGrid from an Identify Function.

My problem is that the information needs to be in a very specific order, and i'm having trouble to obtain it.

I started studying the IDictionary and found, hoping to find out my salvation, but here's what i got so far:

public class DataItem
{
 public string Title { get; set; }
 public IDictionary<string, object> Data { get; set; }
}

//This is called after the results are found!
public void getIdentifyResults(List<IdentifyResult> results)
{
 _dataItems = new List<DataItem>();
 linhaDeObservações = new List<string>();
 if (results != null && results.Count > 0) 
 {
  IdentifyComboBox.Items.Clear();
  foreach (IdentifyResult result in results)
  {
   /* there can be more than oe result, each with several 
    * lines, which i must select a few.
    */
   Graphic LineCatcher = new Graphic();
   /* The following line should get lines by it's key (like "number", for example)
    * and will be repeated several times.
    */
   LineCatcher.Attributes.Add(result.Feature.Attributes.Where(/*Don't know what to put here*/);
   
   string title = result.Value.ToString() + " (" + result.LayerName + ")";
   _dataItems.Add(new DataItem() 
   {
    Title = title,
    Data = LineCatcher.Attributes
   });
   IdentifyComboBox.Items.Add(title);
  }
  IdentifyComboBox.SelectedIndex = 0;
 }
}

Anyone can help me?

Re: Obtaining Results from a IdentifyResult

JenniferNery — Thu, 17 Feb 2011 15:48:22 GMT

What do you mean by "in specific order"? Do you mean sorted results or sorted field names?

Re: Obtaining Results from a IdentifyResult

jonataspovoas — Sat, 11 Dec 2021 08:02:37 GMT

What do you mean by "in specific order"? Do you mean sorted results or sorted field names?

Sorted Results.

the results come in an order and i need to change it.

Like:

-----------------------------
   Key | Value
-----------------------------
Cell number | 7897-7978
 Name | Joseph Climber
      Number | 129890 

-----------------------------
          Key | Value
-----------------------------
     Number | 129890 
        Name | Joseph Climber
Cell number | 7897-7978

I need sort the lines in an order that is neither alphabetical nor numeric

Re: Obtaining Results from a IdentifyResult

jonataspovoas — Sat, 11 Dec 2021 08:02:40 GMT

Hi,

I'm replying my reply to say that i finaly did it!

I'm posting here the solution:

MainPage.xaml

<UserControl x:Class="DataOrdering.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:slData="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Data"
    mc:Ignorable="d"
    d:DesignHeight="600" d:DesignWidth="800">

    <Canvas x:Name="LayoutRoot" Background="White">
        <slData:DataGrid x:Name="dadios" AutoGenerateColumns="False" HeadersVisibility="Column" Background="White" IsReadOnly="True" HorizontalScrollBarVisibility="Visible" Margin="8,15,-27,6" Height="165" Canvas.Left="4" Canvas.Top="37">
            <slData:DataGrid.Columns>
                <slData:DataGridTextColumn Width="Auto"  Binding="{Binding Key}" Header="Keys" FontWeight="Bold"/>
                <slData:DataGridTextColumn Width="Auto" Binding="{Binding Value}" Header="Values" />
            </slData:DataGrid.Columns>
        </slData:DataGrid>
    </Canvas>
</UserControl>

MainPage.xaml.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using System.Collections;

namespace DataOrdering
{
    public partial class MainPage : UserControl
    {
        public MainPage()
        {
            InitializeComponent();
            addResults();
        }

        private void addResults()
        {
            IDictionary<string, object> dataDictionary = new Dictionary<string, object>();
            dataDictionary.Add("Test", "Testado");
            dataDictionary.Add("ID", 10);
            dataDictionary.Add("id", "hhotbh");
            dataDictionary.Add("ThisGoesOnTop", "Qqr coisa");
            dataDictionary.Add("ThisGoesOnBottom", "oiyggfq");
            dadios.ItemsSource = order(dataDictionary);
            
        }

        public IDictionary<string, object> order(IDictionary<string, object> dataDictionary)
        {
            IDictionary<string,object> destiny = new Dictionary<string,object>();
            Dictionary<string, object> source = dataDictionary as Dictionary<string, object>;
            object value;
            
            if (source.TryGetValue("ThisGoesOnTop", out value)) destiny.Add("ThisGoesOnTop",value);
            if (source.TryGetValue("ID", out value)) destiny.Add("ID", value);
            if (source.TryGetValue("Test", out value)) destiny.Add("Test", value);
            if (source.TryGetValue("id", out value)) destiny.Add("id", value);
            if (source.TryGetValue("ThisGoesOnBottom", out value)) destiny.Add("ThisGoesOnBottom", value);

            return destiny;
        }
    }
}

Re: Obtaining Results from a IdentifyResult

JenniferNery — Sat, 11 Dec 2021 08:02:42 GMT

Ahh, you mean you want the results displayed in certain order according to their field names (not their values), where if results came back with Cell > Name > Number, you want to change the order to Number > Name > Cell.

In this sample: http://help.arcgis.com/en/webapi/silverlight/samples/start.htm#Identify, you need to modify ShowFeatures() where Data can no longer be set directly to feature.Attributes.

Without any change to this sample, click on Denver. For simplicity let's look at only 3 fields. Notice the order of these 3 fields: ObjectID > NAME > STATE_NAME. If you want to change the order in which they appear, you will need something like this to force them to be in a certain order.

private IDictionary<string, object> OrderedAttributes(IDictionary<string, object> source)
{
 IDictionary<string, object> result = new Dictionary<string, object>();
 List<string> orderedFields = new List<string>() { "STATE_NAME", "NAME", "ObjectID" };
 foreach (var f in orderedFields)
 {
  if (source.ContainsKey(f))
  {
   var item = source;
   result.Add(f, item);
  }    
 }
 return result;
}