Hi Everybody, I`ve a new question regarding a new Add-In I`m writing. It`s still for ArcGIS Pro 1.4 and SDK version 1.3.0.5861 because it extents another system on that state. Basically it monitors a local GPS device via serial port and shows the data in different ways. Everything works as desired at the moment but I`m experiencing the behaviour that my ArcGIS Pro buttons from time to time grey out /disable for a short moment. I know this may have something to do that my UI-thread is blocked somehow but I can`t imagine the reason. Because my Add-In has already some code in it I decided to attach the complete project as attachment. It will not run as stand-alone because it expects another add-in to be present but maybe the full code will be helpful. Additionally I`ll try to explain what I`m doing in simplified pseudo code here: protected GpsPanelViewModel ( ) { _gpsReader = new GPSReader ( ) ; _gpsReader . RaiseGpsValuesReceivedEvent + = HandleNewGPSValuesReceivedEvent ; } private async void HandleNewGPSValuesReceivedEvent ( object sender , GpsValueReceivedEventArgs e ) { var disposable = await QueuedTask . Run ( ( ) = > { // Do something with received GPS-Data // Add map point and update view model parameters for UI update } } public void DoSomethingWhenGPSButtonIsClicked ( object obj ) { if ( _gpsIsActive == false ) { _gpsReader . StartReading ( ) ; } else { _gpsReader . StopReading ( ) ; } } public class GPSReader { private Thread _readGpsThread ; private Thread _parseGpsThread ; private System . Threading . Timer _timerReader ; private System . Threading . Timer _timerParser ; private BlockingCollection GpsRawData > _gpsDataBuffer ; } public void StartReading ( ) { _readGpsThread = new Thread ( StartGpsReaderLoop ) ; _parseGpsThread = new Thread ( StartGpsParserLoop ) ; _readGpsThread . Start ( ) ; _parseGpsThread . Start ( ) ; } public void StopReading ( ) { ClosePort ( ) ; _timerReader . Change ( Timeout . Infinite , Timeout . Infinite ) ; _timerParser . Change ( Timeout . Infinite , Timeout . Infinite ) ; _readGpsThread . Abort ( ) ; _parseGpsThread . Abort ( ) ; } private void StartGpsReaderLoop ( ) { _timerReader = new System . Threading . Timer ( ( e ) = > { GetData ( ) ; // GET data from GPS and store in _gpsDataBuffer } , null , 0 , 1000 ) ; } private void StartGpsParserLoop ( ) { _timerParser = new System . Threading . Timer ( ( e ) = > { ParseData ( ) ; // Get raw data from _gpsDataBuffer and raise event when finished } , null , 0 , 500 ) ; } The main question for me is, where does the probem occur? Is it because I`m running two additional threads in my GPS-Reader? Any help would be very appreciated. Best regards Richard GPS.zip DougBrowning_3-1643141150913.png

nav[aria-label="Primary Navigation"] { padding: 0; & ul { list-style: none; width: 100%; display: flex; flex-direction: row; justify-content: start; align-items: start; gap: 30px; padding: 0; & li { margin: 0; } & ul li { list-style: none; } } }

UI-Buttons shortly greyed out during GPS-Tracking

RichardReinicke

Hi Everybody,

I`ve a new question regarding a new Add-In I`m writing. It`s still for ArcGIS Pro 1.4 and SDK version 1.3.0.5861 because it extents another system on that state. Basically it monitors a local GPS device via serial port and shows the data in different ways. Everything works as desired at the moment but I`m experiencing the behaviour that my ArcGIS Pro buttons from time to time grey out /disable for a short moment.

I know this may have something to do that my UI-thread is blocked somehow but I can`t imagine the reason.

Because my Add-In has already some code in it I decided to attach the complete project as attachment. It will not run as stand-alone because it expects another add-in to be present but maybe the full code will be helpful.

Additionally I`ll try to explain what I`m doing in simplified pseudo code here:

<SPAN class="keyword token">protected</SPAN> <SPAN class="token function">GpsPanelViewModel</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN>
<SPAN class="punctuation token">{</SPAN>
 _gpsReader <SPAN class="operator token">=</SPAN> <SPAN class="keyword token">new</SPAN> <SPAN class="token class-name">GPSReader</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
 _gpsReader<SPAN class="punctuation token">.</SPAN>RaiseGpsValuesReceivedEvent <SPAN class="operator token">+</SPAN><SPAN class="operator token">=</SPAN> HandleNewGPSValuesReceivedEvent<SPAN class="punctuation token">;</SPAN>
<SPAN class="punctuation token">}</SPAN>
<SPAN class="keyword token">private</SPAN> <SPAN class="keyword token">async</SPAN> <SPAN class="keyword token">void</SPAN> <SPAN class="token function">HandleNewGPSValuesReceivedEvent</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="keyword token">object</SPAN> sender<SPAN class="punctuation token">,</SPAN> GpsValueReceivedEventArgs e<SPAN class="punctuation token">)</SPAN>
<SPAN class="punctuation token">{</SPAN>
 <SPAN class="keyword token">var</SPAN> disposable <SPAN class="operator token">=</SPAN> <SPAN class="keyword token">await</SPAN> QueuedTask<SPAN class="punctuation token">.</SPAN><SPAN class="token function">Run</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="operator token">=</SPAN><SPAN class="operator token">></SPAN>
 <SPAN class="punctuation token">{</SPAN>
 <SPAN class="comment token">// Do something with received GPS-Data</SPAN>
 <SPAN class="comment token">// Add map point and update view model parameters for UI update</SPAN>
 <SPAN class="punctuation token">}</SPAN>
<SPAN class="punctuation token">}</SPAN>
<SPAN class="keyword token">public</SPAN> <SPAN class="keyword token">void</SPAN> <SPAN class="token function">DoSomethingWhenGPSButtonIsClicked</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="keyword token">object</SPAN> obj<SPAN class="punctuation token">)</SPAN>
<SPAN class="punctuation token">{</SPAN>
 <SPAN class="keyword token">if</SPAN> <SPAN class="punctuation token">(</SPAN>_gpsIsActive <SPAN class="operator token">==</SPAN> <SPAN class="keyword token">false</SPAN><SPAN class="punctuation token">)</SPAN>
 <SPAN class="punctuation token">{</SPAN>
 _gpsReader<SPAN class="punctuation token">.</SPAN><SPAN class="token function">StartReading</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
 <SPAN class="punctuation token">}</SPAN>
 <SPAN class="keyword token">else</SPAN>
 <SPAN class="punctuation token">{</SPAN>
 _gpsReader<SPAN class="punctuation token">.</SPAN><SPAN class="token function">StopReading</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
 <SPAN class="punctuation token">}</SPAN>
<SPAN class="punctuation token">}</SPAN>
<SPAN class="keyword token">public</SPAN> <SPAN class="keyword token">class</SPAN> <SPAN class="token class-name">GPSReader</SPAN>
<SPAN class="punctuation token">{</SPAN>
 <SPAN class="keyword token">private</SPAN> Thread _readGpsThread<SPAN class="punctuation token">;</SPAN>
 <SPAN class="keyword token">private</SPAN> Thread _parseGpsThread<SPAN class="punctuation token">;</SPAN>
 <SPAN class="keyword token">private</SPAN> System<SPAN class="punctuation token">.</SPAN>Threading<SPAN class="punctuation token">.</SPAN>Timer _timerReader<SPAN class="punctuation token">;</SPAN>
 <SPAN class="keyword token">private</SPAN> System<SPAN class="punctuation token">.</SPAN>Threading<SPAN class="punctuation token">.</SPAN>Timer _timerParser<SPAN class="punctuation token">;</SPAN>
 <SPAN class="keyword token">private</SPAN> BlockingCollection<SPAN class="operator token"><</SPAN>GpsRawData<SPAN class="operator token">></SPAN> _gpsDataBuffer<SPAN class="punctuation token">;</SPAN> 
<SPAN class="punctuation token">}</SPAN>
<SPAN class="keyword token">public</SPAN> <SPAN class="keyword token">void</SPAN> <SPAN class="token function">StartReading</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN> 
<SPAN class="punctuation token">{</SPAN>
 _readGpsThread <SPAN class="operator token">=</SPAN> <SPAN class="keyword token">new</SPAN> <SPAN class="token class-name">Thread</SPAN><SPAN class="punctuation token">(</SPAN>StartGpsReaderLoop<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
 _parseGpsThread <SPAN class="operator token">=</SPAN> <SPAN class="keyword token">new</SPAN> <SPAN class="token class-name">Thread</SPAN><SPAN class="punctuation token">(</SPAN>StartGpsParserLoop<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
 _readGpsThread<SPAN class="punctuation token">.</SPAN><SPAN class="token function">Start</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
 _parseGpsThread<SPAN class="punctuation token">.</SPAN><SPAN class="token function">Start</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
<SPAN class="punctuation token">}</SPAN>
 
<SPAN class="keyword token">public</SPAN> <SPAN class="keyword token">void</SPAN> <SPAN class="token function">StopReading</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN>
<SPAN class="punctuation token">{</SPAN>
 <SPAN class="token function">ClosePort</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
 _timerReader<SPAN class="punctuation token">.</SPAN><SPAN class="token function">Change</SPAN><SPAN class="punctuation token">(</SPAN>Timeout<SPAN class="punctuation token">.</SPAN>Infinite<SPAN class="punctuation token">,</SPAN> Timeout<SPAN class="punctuation token">.</SPAN>Infinite<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
 _timerParser<SPAN class="punctuation token">.</SPAN><SPAN class="token function">Change</SPAN><SPAN class="punctuation token">(</SPAN>Timeout<SPAN class="punctuation token">.</SPAN>Infinite<SPAN class="punctuation token">,</SPAN> Timeout<SPAN class="punctuation token">.</SPAN>Infinite<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
 _readGpsThread<SPAN class="punctuation token">.</SPAN><SPAN class="token function">Abort</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
 _parseGpsThread<SPAN class="punctuation token">.</SPAN><SPAN class="token function">Abort</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
<SPAN class="punctuation token">}</SPAN>
<SPAN class="keyword token">private</SPAN> <SPAN class="keyword token">void</SPAN> <SPAN class="token function">StartGpsReaderLoop</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN>
<SPAN class="punctuation token">{</SPAN>
 _timerReader <SPAN class="operator token">=</SPAN> <SPAN class="keyword token">new</SPAN> <SPAN class="token class-name">System<SPAN class="punctuation token">.</SPAN>Threading<SPAN class="punctuation token">.</SPAN>Timer</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">(</SPAN>e<SPAN class="punctuation token">)</SPAN> <SPAN class="operator token">=</SPAN><SPAN class="operator token">></SPAN>
 <SPAN class="punctuation token">{</SPAN>
 <SPAN class="token function">GetData</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN> <SPAN class="comment token">// GET data from GPS and store in _gpsDataBuffer</SPAN>
 <SPAN class="punctuation token">}</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="keyword token">null</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="number token">0</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="number token">1000</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
<SPAN class="punctuation token">}</SPAN>
<SPAN class="keyword token">private</SPAN> <SPAN class="keyword token">void</SPAN> <SPAN class="token function">StartGpsParserLoop</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN>
<SPAN class="punctuation token">{</SPAN>
 _timerParser <SPAN class="operator token">=</SPAN> <SPAN class="keyword token">new</SPAN> <SPAN class="token class-name">System<SPAN class="punctuation token">.</SPAN>Threading<SPAN class="punctuation token">.</SPAN>Timer</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">(</SPAN>e<SPAN class="punctuation token">)</SPAN> <SPAN class="operator token">=</SPAN><SPAN class="operator token">></SPAN>
 <SPAN class="punctuation token">{</SPAN>
 <SPAN class="token function">ParseData</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN> <SPAN class="comment token">// Get raw data from _gpsDataBuffer and raise event when finished</SPAN>
 <SPAN class="punctuation token">}</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="keyword token">null</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="number token">0</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="number token">500</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
<SPAN class="punctuation token">}</SPAN>‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍<SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

The main question for me is, where does the probem occur? Is it because I`m running two additional threads in my GPS-Reader?

Any help would be very appreciated.

Best regards

Richard

GPS.zip

DougBrowning_3-1643141150913.png

Find more posts tagged with

Accepted answers

vanesch

By default, buttons on the ribbon automatically become disabled whenever something is running on the main worker thread (the thread associated with QueuedTask.Run). Buttons can opt out of this by setting their DAML disableIfBusy attribute to false. However, if your task is using ArcObjects it should use QueuedTask and it should probably keep disableIfBusy = true. If your task isn't running ArcObjects (maybe you'll pulling something down from the web or using your own objects to do something), you might want to consider using a thread from the .NET thread pool (Task.Run) and disableIfBusy=false.

<button id="acme_ShowWiz" caption="Show Wizard" className="ShowWizardCMD" loadOnClick="true" disableIfBusy="false"

All comments

Wolf

I didn't try your sample, however, Buttons on the ArcGIS Pro ribbon are usually tied to a 'Condition' (which in turn is tied to a State in ArcGIS Pro). You can read more about that here: https://github.com/Esri/arcgis-pro-sdk/wiki/ProGuide-Buttons.

You can try to override your GPS button's condition by addition the following attribute to your 'button' tag in the config.daml:

condition="esri_mapping_openProjectCondition"

This condition should always be true as long as a Project is open, meaning your button should be enabled when a project is open. Here is an example with the condition attribute in the last line:

<SPAN class="token tag"><SPAN class="token tag"><SPAN class="punctuation token"><</SPAN>button</SPAN> <SPAN class="attr-name token">id</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>WorkwithProjects_WorkWithProjects_ShowButton<SPAN class="punctuation token">"</SPAN></SPAN> 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <SPAN class="attr-name token">caption</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>Show Work With Projects<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="attr-name token">className</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>WorkWithProjects_ShowButton<SPAN class="punctuation token">"</SPAN></SPAN> 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <SPAN class="attr-name token">loadOnClick</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>true<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="attr-name token">keytip</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>W1<SPAN class="punctuation token">"</SPAN></SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <SPAN class="attr-name token">smallImage</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>Images\Dino16.png<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="attr-name token">largeImage</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>Images\Dino32.png<SPAN class="punctuation token">"</SPAN></SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <SPAN class="attr-name token">condition</SPAN><SPAN class="attr-value token"><SPAN class="punctuation token">=</SPAN><SPAN class="punctuation token">"</SPAN>esri_mapping_openProjectCondition<SPAN class="punctuation token">"</SPAN></SPAN> <SPAN class="punctuation token">></SPAN></SPAN><SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

Conditions are defined here: https://github.com/Esri/arcgis-pro-sdk/wiki/Condition-DAML-ID-Reference

vanesch

<button id="acme_ShowWiz" caption="Show Wizard" className="ShowWizardCMD" loadOnClick="true" disableIfBusy="false"

RichardReinicke

Thank you for your ideas.

Steve Van Esch
You`re right, the effect occurs in the last part of my process in HandleNewGPSValuesReceivedEvent(). Inside QueuedTask.Run I

1. Create a mapPoint and add it as overlay to show GPS position

<SPAN class="keyword token">var</SPAN> mapPoint <SPAN class="operator token">=</SPAN> MapPointBuilder<SPAN class="punctuation token">.</SPAN><SPAN class="token function">CreateMapPoint</SPAN><SPAN class="punctuation token">(</SPAN>e<SPAN class="punctuation token">.</SPAN>GPSData<SPAN class="punctuation token">.</SPAN>GPGGA<SPAN class="punctuation token">.</SPAN>Longitude<SPAN class="punctuation token">,</SPAN> e<SPAN class="punctuation token">.</SPAN>GPSData<SPAN class="punctuation token">.</SPAN>GPGGA<SPAN class="punctuation token">.</SPAN>Latitude<SPAN class="punctuation token">,</SPAN> _wgs84<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
MapView<SPAN class="punctuation token">.</SPAN>Active<SPAN class="punctuation token">.</SPAN><SPAN class="token function">AddOverlay</SPAN><SPAN class="punctuation token">(</SPAN>mapPoint<SPAN class="punctuation token">,</SPAN> _gpsPositionSymbol<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN><SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

2. Conditionally shift map extent if the GPS position moves out

<SPAN class="keyword token">if</SPAN> <SPAN class="punctuation token">(</SPAN>MapView<SPAN class="punctuation token">.</SPAN>Active<SPAN class="punctuation token">.</SPAN>Extent<SPAN class="punctuation token">.</SPAN>XMax <SPAN class="operator token">-</SPAN> mapPoint<SPAN class="punctuation token">.</SPAN>X <SPAN class="operator token"><=</SPAN> <SPAN class="number token">0.003</SPAN> <SPAN class="operator token">||</SPAN> mapPoint<SPAN class="punctuation token">.</SPAN>X <SPAN class="operator token">-</SPAN> MapView<SPAN class="punctuation token">.</SPAN>Active<SPAN class="punctuation token">.</SPAN>Extent<SPAN class="punctuation token">.</SPAN>XMin <SPAN class="operator token"><=</SPAN> <SPAN class="number token">0.003</SPAN>
 <SPAN class="operator token">||</SPAN> mapPoint<SPAN class="punctuation token">.</SPAN>Y <SPAN class="operator token">-</SPAN> MapView<SPAN class="punctuation token">.</SPAN>Active<SPAN class="punctuation token">.</SPAN>Extent<SPAN class="punctuation token">.</SPAN>YMin <SPAN class="operator token"><=</SPAN> <SPAN class="number token">0.003</SPAN> <SPAN class="operator token">||</SPAN> MapView<SPAN class="punctuation token">.</SPAN>Active<SPAN class="punctuation token">.</SPAN>Extent<SPAN class="punctuation token">.</SPAN>YMax <SPAN class="operator token">-</SPAN> mapPoint<SPAN class="punctuation token">.</SPAN>Y <SPAN class="operator token"><=</SPAN> <SPAN class="number token">0.003</SPAN><SPAN class="punctuation token">)</SPAN>
 <SPAN class="punctuation token">{</SPAN>
 newMapExtent <SPAN class="operator token">=</SPAN> mapPoint<SPAN class="punctuation token">.</SPAN>Extent<SPAN class="punctuation token">.</SPAN><SPAN class="token function">Expand</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="number token">0.01</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="number token">0.01</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="keyword token">false</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
 MapView<SPAN class="punctuation token">.</SPAN>Active<SPAN class="punctuation token">.</SPAN><SPAN class="token function">ZoomToAsync</SPAN><SPAN class="punctuation token">(</SPAN>newMapExtent<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
 <SPAN class="punctuation token">}</SPAN><SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

I commented this code out and the disabling disappeared. So I`m glad it`s not because of my GpsReader Stuff. Anyway these actions are needed. I need to show an updated position on the map without blocking. Of course I can set these conditions to the AddIn ribbon button to make it always active but will it have a negative impact? What if someone would click it exact at the same time my ArcObject code is running?

Additionally I also have UI button elements on my DockingPane. These UI-Elements are not part of my Config.daml? I just added them to my GpsPanel.xaml so they are basic WPF but they are also affected which is more complicate because my user should be able to start/stop GPS-Reading no matter if worker thread is adding 1 or 2 last points.

How can I prevent these buttons or other elements on my pane from being disbaled?

<SPAN class="" style="color: #d74444; border: 0px; font-weight: inherit;"></SPAN>

vanesch

Hi. By default RelayCommands (ArcGIS.Desktop.Framework.RelayCommand) also automatically disable whenever the main worker thread is busy. RelayCommands can also opt out of this by setting the displayWhenBusy constructor parameter to false.

new RelayCommand(DoSomethingWhenGPSButtonIsClicked, CanStartGPS, true, false);

RichardReinicke

Thank you very much for your help. So I got rid of this flickering buttons. I`m still not 100% sure how the app will behave when I click the button while app is in busy state but we will see.

Join the Conversation

Signed in members can post, follow updates, and more. New here? Register a free account.

Quick Links

Community Help
Find useful guides, FAQs, and documents to help you navigate and make the most of Esri Community.