topic Re: Query in Silverlight? in ArcGIS Viewer for Silverlight Questions

Query in Silverlight?

LauraMellem — Fri, 20 Jan 2012 13:27:50 GMT

I want to add a query tool that does not require the user to type in an sql expression. Is there a way to list domain values using the tool to make it easier?

Re: Query in Silverlight?

KatherineDalton — Fri, 20 Jan 2012 14:19:59 GMT

Hi Laura,

This is a situation where you would need to write a custom add-in. You might take a look at the Attribute Query sample in our [url=http://help.arcgis.com/en/webapps/silverlightviewer/samples/start.html]Samples[/url] page for information/ideas.

Katy

Re: Query in Silverlight?

JesseRaymond — Wed, 15 Aug 2012 21:02:16 GMT

Hi Laura,

This is a situation where you would need to write a custom add-in. You might take a look at the Attribute Query sample in our Samples page for information/ideas.

Katy

Hi Katy,

We would like to use this tool, but we're not clear why it isn't offered as a pre-made add-in? What makes it require custom development? It seems rather cumbersome for users to have to re-invent the wheel on something that is already built in the samples...

Thanks,
Jesse

Re: Query in Silverlight?

Maral_CanEmre — Tue, 20 Nov 2012 13:16:29 GMT

Totally agree with Jesse, it's a backward step for those users who want to build simple web applcations without any coding background and once able to do it in ArcGIS Server 10 with Web Applications module.

Re: Query in Silverlight?

TomMagdaleno — Wed, 21 Nov 2012 16:57:15 GMT

Because you can now use your own custom locator I'm experimenting with making a custom address locator using General - Single Field style, then using it to query the field I need to search (facilityID field in my Sewer Line feature class). I'll let you know if I get it working.

Re: Query in Silverlight?

TomMagdaleno — Tue, 27 Nov 2012 15:58:57 GMT

I made an address locator with General Single Field style and it works perfectly in ArcMap. But in Silverlight it cannot connect to it for some reason. I think their may be a bug with that style address locator.

Re: Query in Silverlight?

nakulmanocha — Thu, 29 Nov 2012 17:04:17 GMT

I made an address locator with General Single Field style and it works perfectly in ArcMap. But in Silverlight it cannot connect to it for some reason. I think their may be a bug with that style address locator.

Please download the latest version of the search tool if you haven't already

http://www.arcgis.com/home/item.html?id=a236f090e28e4254b96a8a138cf3c46a

I tested with General Single Field style locator service to search parcels. It found the parcels correctly using the ArcGIS Viewer for Silverlight 3.0 and the latest search tool as mentioned above.

If you having trouble connecting to Geocoding service please use fiddler, IE or chrome developer tools and see if you get any errors under network or console tab. Please also try browsing directly to the REST Geocoding service to see if you can access it.

Re: Query in Silverlight?

Ariharan — Thu, 06 Dec 2012 03:29:04 GMT

Hi Laura,

This is a situation where you would need to write a custom add-in. You might take a look at the Attribute Query sample in our Samples page for information/ideas.

Katy

Hi Katy,
Am also in the same situation, to create a Custom add-in for the query. Even the sample is available, this is not user fiendly. In the sample we need to type the entire query, with the proper attribute names and field values. But that is not possible at all.

So, please guide me to read the attribute field names and unique values of attributes from the selected layer. Is therer any build-in function to read those fields and values of the fields?

Re: Query in Silverlight?

YurongTan — Mon, 10 Dec 2012 14:32:19 GMT

How to bind a query returns/results to a textblock in XAML? See below. Thanks

<TextBlock x:Name="textLabel" Forground="White" Text="Total records/features found: " />
<TextBlock x:Name="featuresFound" Foreground="Red" Text="{Binding ... }" />

Re: Query in Silverlight?

TomMagdaleno — Mon, 10 Dec 2012 15:02:38 GMT

Thank you Nakul for pointing me to the latest Search Tool. It works as I expected.

Re: Query in Silverlight?

KatherineDalton — Tue, 11 Dec 2012 13:20:56 GMT

Hi Katy,
Am also in the same situation, to create a Custom add-in for the query. Even the sample is available, this is not user fiendly. In the sample we need to type the entire query, with the proper attribute names and field values. But that is not possible at all.

So, please guide me to read the attribute field names and unique values of attributes from the selected layer. Is therer any build-in function to read those fields and values of the fields?

Hi Ariharan,

This thread actually contains discussion of two different Search-type tools/operations. The Search tool that we have released is designed to search for content on the web, ArcGIS Online, an ArcGIS Server instance, or a place using a custom locator. The type of Search you are referring to where you can input a Query and find records in your data is not yet available. We are working on this latter functionality for our March release.

Hope that helps,
Katy

Re: Query in Silverlight?

KatherineDalton — Sat, 11 Dec 2021 13:41:04 GMT

How to bind a query returns/results to a textblock in XAML? See below. Thanks

<TextBlock x:Name="textLabel" Forground="White" Text="Total records/features found: " />
<TextBlock x:Name="featuresFound" Foreground="Red" Text="{Binding ... }" />

Hi Yurong,

We take an Model-View-ViewModel (MVVM) approach with this type of binding, and I've included some code below that should help get you started. This code is from the QueryRelatedRecords tool we will be releasing shortly. Note that you do not need to use a ListBox, but it shows the pattern for binding.

RelationshipSelectionView.xaml:

 <ListBox HorizontalAlignment="Stretch" x:Name="RelationshipsListBox" Background="Transparent" BorderBrush="Transparent" Margin="5,2,-5,0" ItemsSource="{Binding RelationshipList}"
            VerticalAlignment="Stretch" DisplayMemberPath="Name" Width="300" FontFamily="SegoeUI" Grid.Row="2" Grid.ColumnSpan="3">
        </ListBox>

QueryRelatedTool.cs (the tool clicked):

relationshipList = new List<Relationship>();
QueryRelatedViewModel vm = new QueryRelatedViewModel(relationshipList, MapApplication.Current.Map);
RelationshipSelectionView relationshipView = new RelationshipSelectionView();
relationshipView.DataContext = vm;

int relCount = relatesLayer.LayerInfo.Relationships.Count();
            if (relCount > 1) // Layer has more than one relationship
            {
                foreach (Relationship rel in relatesLayer.LayerInfo.Relationships)
                {
                    relationshipList.Add(rel);
                }

            }

QueryRelatedViewModel.cs:

 public QueryRelatedViewModel(List<Relationship> relationships, Map Map)
        {
            RelationshipList = relationships;
            map = Map;
        }

 private List<Relationship> relationshipList;
        /// <summary>
        /// Gets or sets the list of Relationships associated with a layer
        /// </summary>
        public List<Relationship> RelationshipList
        {
            get { return relationshipList; }
            private set
            {
                if (relationshipList != value)
                    relationshipList = value;
            }
        }

Hope that helps,
Katy