update a Label-Content from values found in a QueuedTask

ChristianPagel1 — Tue, 16 Jan 2024 09:28:41 GMT

Hi, I want to update a Label-Content from values found in a QueuedTask.
How can I access the GUI?

ArcGISpro 2.9, VS2019, .NET 4.8

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Data;

using System.Windows.Documents;

using System.Windows.Input;

using System.Windows.Media;

using System.Windows.Media.Imaging;

using System.Windows.Navigation;

using System.Windows.Shapes;

using ArcGIS.Core.Data;

using ArcGIS.Desktop.Core;

using ArcGIS.Desktop.Framework.Threading.Tasks;

using ArcGIS.Desktop.Mapping;

using System.Windows.Threading;

namespace AttributeValues

{

/// <summary>

/// Interaction logic for ProWindow1.xaml

/// </summary>

public partial class ProWindow1 : ArcGIS.Desktop.Framework.Controls.ProWindow

{

public ProWindow1()

{

InitializeComponent();

}

private void Button_1_Click(object sender, RoutedEventArgs e)

{

var map = MapView.Active?.Map;

FeatureLayer layer = map.FindLayers("streets").FirstOrDefault() as FeatureLayer;

getNames(layer);

}

private static async Task getNames(FeatureLayer layer)

{

QueuedTask.Run(() =>

{

try

{

string sWhereClause = "42 = 42";

string sPostfixClause = "ORDER BY name";

string sSubFields = "name";

QueryFilter queryFilter = new QueryFilter();

queryFilter.WhereClause = sWhereClause;

queryFilter.PostfixClause = sPostfixClause;

queryFilter.SubFields = sSubFields;

RowCursor rows = layer.Search(queryFilter);

while (rows.MoveNext())

{

var curRow = rows.Current;

string sName = curRow.GetOriginalValue(curRow.FindField("name")).ToString();

// Write sName to Label_1 in ProWindow1 to see the progress!!!

// DO SOMETHING WITH THE STREET ...

System.Diagnostics.Debug.Print(sName);

} // while

return true;

} // try

catch (Exception exc) { System.Windows.MessageBox.Show(exc.Message); return false; }

}).Wait();

}

Re: update a Label-Content from values found in a QueuedTask

GKmieliauskas — Tue, 16 Jan 2024 10:04:21 GMT

Hi,

Look at the question .

Main idea would be to switch to GUI thread and set Label_1 Content property:

Application.Current.Dispatcher.Invoke(() => { Label_1.Content = "some text"; });

Re: update a Label-Content from values found in a QueuedTask

ChristianPagel1 — Tue, 16 Jan 2024 11:35:02 GMT

Hi, thank you for your response. I will try ...

topic update a Label-Content from values found in a QueuedTask in ArcGIS Pro SDK Questions

update a Label-Content from values found in a QueuedTask

Re: update a Label-Content from values found in a QueuedTask

Re: update a Label-Content from values found in a QueuedTask