Hi. I'm creating a series of MapTools to sketch a line on the map that will represent a new feature. A criteria of the sketch is that the first node of the sketch must intersect a line feature. So for example, to create a hydrant lateral the first click must intersect a watermain....the second click will represent the hydrant valve and the last the hydrant. I have created a routine for checking for the intersection of the first click to a given layer, but I am getting mixed results. With certain layers it works (ie. my sewer layer for my sewer connection tool), but other layers (ie. my watermain layer for my hydrant tool). Here is the code: public static bool IntersectsLayer ( MapPoint point , FeatureLayer layer ) { try { SpatialQueryFilter spatialFilter = new SpatialQueryFilter ( ) ; spatialFilter . FilterGeometry = point ; spatialFilter . SpatialRelationship = SpatialRelationship . Intersects ; RowCursor theCursor = layer . Search ( spatialFilter ) ; Feature feature ; while ( theCursor . MoveNext ( ) ) { using ( feature = ( Feature ) theCursor . Current ) { return true ; } } } catch ( Exception ex ) { ArcGIS . Desktop . Framework . Dialogs . MessageBox . Show ( ex . ToString ( ) ) ; } return false ; } And here is the code that calls it: protected override Task bool > OnSketchCompleteAsync ( Geometry geometry ) { //use the sketch geometry to create the connectionPoint, valve and hydrant var pointCollection = ( ( Multipart ) geometry ) . Points ; MapPoint connectionPoint = pointCollection [ 0 ] ; MapPoint hydrantPoint = pointCollection [ pointCollection . Count - 1 ] ; MapPoint valvePoint = pointCollection [ 1 ] ; //start creating the features QueuedTask . Run ( ( ) = > { if ( Global . IntersectsLayer ( connectionPoint , waterMainLayer ) == false ) { ArcGIS . Desktop . Framework . Dialogs . MessageBox . Show ( connectionPoint . X . ToString ( ) + ", " + connectionPoint . Y . ToString ( ) , "Error" ) ; ArcGIS . Desktop . Framework . Dialogs . MessageBox . Show ( "The starting point must intersect the WaterMain or Water Service layer." , "Error" ) ; return ; } . . . . . . . Can anyone see anything wrong in the code? For some reason it always returns false when using the watermain layer. I have snapping turned on, and it always works when using my similarly coded sewer connection tool. Any ideas are appreciated.

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Help with finding intersecting layer

BrianBulla

Hi. I'm creating a series of MapTools to sketch a line on the map that will represent a new feature. A criteria of the sketch is that the first node of the sketch must intersect a line feature. So for example, to create a hydrant lateral the first click must intersect a watermain....the second click will represent the hydrant valve and the last the hydrant.

I have created a routine for checking for the intersection of the first click to a given layer, but I am getting mixed results. With certain layers it works (ie. my sewer layer for my sewer connection tool), but other layers (ie. my watermain layer for my hydrant tool). Here is the code:

<SPAN class="keyword token">public</SPAN> <SPAN class="keyword token">static</SPAN> <SPAN class="keyword token">bool</SPAN> <SPAN class="token function">IntersectsLayer</SPAN><SPAN class="punctuation token">(</SPAN>MapPoint point<SPAN class="punctuation token">,</SPAN> FeatureLayer layer<SPAN class="punctuation token">)</SPAN>
        <SPAN class="punctuation token">{</SPAN>
            <SPAN class="keyword token">try</SPAN>
            <SPAN class="punctuation token">{</SPAN>
                SpatialQueryFilter spatialFilter <SPAN class="operator token">=</SPAN> <SPAN class="keyword token">new</SPAN> <SPAN class="token class-name">SpatialQueryFilter</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
                spatialFilter<SPAN class="punctuation token">.</SPAN>FilterGeometry <SPAN class="operator token">=</SPAN> point<SPAN class="punctuation token">;</SPAN>
                spatialFilter<SPAN class="punctuation token">.</SPAN>SpatialRelationship <SPAN class="operator token">=</SPAN> SpatialRelationship<SPAN class="punctuation token">.</SPAN>Intersects<SPAN class="punctuation token">;</SPAN>

                RowCursor theCursor <SPAN class="operator token">=</SPAN> layer<SPAN class="punctuation token">.</SPAN><SPAN class="token function">Search</SPAN><SPAN class="punctuation token">(</SPAN>spatialFilter<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
                Feature feature<SPAN class="punctuation token">;</SPAN>
                <SPAN class="keyword token">while</SPAN> <SPAN class="punctuation token">(</SPAN>theCursor<SPAN class="punctuation token">.</SPAN><SPAN class="token function">MoveNext</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">using</SPAN> <SPAN class="punctuation token">(</SPAN>feature <SPAN class="operator token">=</SPAN> <SPAN class="punctuation token">(</SPAN>Feature<SPAN class="punctuation token">)</SPAN>theCursor<SPAN class="punctuation token">.</SPAN>Current<SPAN class="punctuation token">)</SPAN>
                    <SPAN class="punctuation token">{</SPAN>
                        <SPAN class="keyword token">return</SPAN> <SPAN class="keyword token">true</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">catch</SPAN> <SPAN class="punctuation token">(</SPAN><SPAN class="token class-name">Exception</SPAN> ex<SPAN class="punctuation token">)</SPAN>
            <SPAN class="punctuation token">{</SPAN>
                ArcGIS<SPAN class="punctuation token">.</SPAN>Desktop<SPAN class="punctuation token">.</SPAN>Framework<SPAN class="punctuation token">.</SPAN>Dialogs<SPAN class="punctuation token">.</SPAN>MessageBox<SPAN class="punctuation token">.</SPAN><SPAN class="token function">Show</SPAN><SPAN class="punctuation token">(</SPAN>ex<SPAN class="punctuation token">.</SPAN><SPAN class="token function">ToString</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">return</SPAN> <SPAN class="keyword token">false</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>

And here is the code that calls it:

<SPAN class="keyword token">protected</SPAN> <SPAN class="keyword token">override</SPAN> Task<SPAN class="operator token"><</SPAN><SPAN class="keyword token">bool</SPAN><SPAN class="operator token">></SPAN> <SPAN class="token function">OnSketchCompleteAsync</SPAN><SPAN class="punctuation token">(</SPAN>Geometry geometry<SPAN class="punctuation token">)</SPAN>
        <SPAN class="punctuation token">{</SPAN>
            <SPAN class="comment token">//use the sketch geometry to create the connectionPoint, valve and hydrant</SPAN>
            <SPAN class="keyword token">var</SPAN> pointCollection <SPAN class="operator token">=</SPAN> <SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">(</SPAN>Multipart<SPAN class="punctuation token">)</SPAN>geometry<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">.</SPAN>Points<SPAN class="punctuation token">;</SPAN>
            MapPoint connectionPoint <SPAN class="operator token">=</SPAN> pointCollection<SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">;</SPAN>
            MapPoint hydrantPoint <SPAN class="operator token">=</SPAN> pointCollection<SPAN class="punctuation token">[</SPAN>pointCollection<SPAN class="punctuation token">.</SPAN>Count <SPAN class="operator token">-</SPAN> <SPAN class="number token">1</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">;</SPAN>
            MapPoint valvePoint <SPAN class="operator token">=</SPAN> pointCollection<SPAN class="punctuation token">[</SPAN><SPAN class="number token">1</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">;</SPAN>

            <SPAN class="comment token">//start creating the features</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="keyword token">if</SPAN> <SPAN class="punctuation token">(</SPAN>Global<SPAN class="punctuation token">.</SPAN><SPAN class="token function">IntersectsLayer</SPAN><SPAN class="punctuation token">(</SPAN>connectionPoint<SPAN class="punctuation token">,</SPAN> waterMainLayer<SPAN class="punctuation token">)</SPAN> <SPAN class="operator token">==</SPAN> <SPAN class="keyword token">false</SPAN><SPAN class="punctuation token">)</SPAN>
                <SPAN class="punctuation token">{</SPAN>
                    ArcGIS<SPAN class="punctuation token">.</SPAN>Desktop<SPAN class="punctuation token">.</SPAN>Framework<SPAN class="punctuation token">.</SPAN>Dialogs<SPAN class="punctuation token">.</SPAN>MessageBox<SPAN class="punctuation token">.</SPAN><SPAN class="token function">Show</SPAN><SPAN class="punctuation token">(</SPAN>connectionPoint<SPAN class="punctuation token">.</SPAN>X<SPAN class="punctuation token">.</SPAN><SPAN class="token function">ToString</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="operator token">+</SPAN> <SPAN class="string token">", "</SPAN> <SPAN class="operator token">+</SPAN> connectionPoint<SPAN class="punctuation token">.</SPAN>Y<SPAN class="punctuation token">.</SPAN><SPAN class="token function">ToString</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="string token">"Error"</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
                    ArcGIS<SPAN class="punctuation token">.</SPAN>Desktop<SPAN class="punctuation token">.</SPAN>Framework<SPAN class="punctuation token">.</SPAN>Dialogs<SPAN class="punctuation token">.</SPAN>MessageBox<SPAN class="punctuation token">.</SPAN><SPAN class="token function">Show</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="string token">"The starting point must intersect the WaterMain or Water Service layer."</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="string token">"Error"</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
                    <SPAN class="keyword token">return</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="punctuation token">.</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>

Can anyone see anything wrong in the code? For some reason it always returns false when using the watermain layer. I have snapping turned on, and it always works when using my similarly coded sewer connection tool.

Any ideas are appreciated.

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Accepted answers

Wolf

You are using indexof to find the layer by name. Did you validate the returned feature layer? indexof can return > 0 for any name that starts with

<SPAN class="" style="color: #669900; border: 0px; font-weight: inherit;">"GISWRKS1.WORKS.WaterMain"</SPAN>

All comments

BrianBulla

Hi Wolfgang,

Just to follow up on this, I did work with esri Canada on this and the end result is that the TEST environment I was using must have some flaw in it. esri Canada also could not reproduce the issue, and after trying the exact same code in our PRODUCTION environment there were no issues.

So I guess a rebuild of our TEST environment is in order, which should happen soon.

Thanks for all your help with this.

YassineKha

Hi sir,

I really want a help from you if it is possible.

currently Im working on Asp.Net MVC web Application and it consume some Arcgis services such as tileLayer ..

and my object is to draw Line on the map and get the intersect with the TileLayer with the geometry engine if possible?

Could you please share with me a link or some sample code that I can start from?

Many thanks

Wolf

You are using indexof to find the layer by name. Did you validate the returned feature layer? indexof can return > 0 for any name that starts with

<SPAN class="" style="color: #669900; border: 0px; font-weight: inherit;">"GISWRKS1.WORKS.WaterMain"</SPAN>

BrianBulla

Yes, the tool has it turned on too.

<SPAN class="keyword token">public</SPAN> <SPAN class="token function">HydrantTool</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN>
        <SPAN class="punctuation token">{</SPAN>
            IsSketchTool <SPAN class="operator token">=</SPAN> <SPAN class="keyword token">true</SPAN><SPAN class="punctuation token">;</SPAN>
            SketchType <SPAN class="operator token">=</SPAN> SketchGeometryType<SPAN class="punctuation token">.</SPAN>Line<SPAN class="punctuation token">;</SPAN>
            SketchOutputMode <SPAN class="operator token">=</SPAN> SketchOutputMode<SPAN class="punctuation token">.</SPAN>Map<SPAN class="punctuation token">;</SPAN>
            UseSnapping <SPAN class="operator token">=</SPAN> <SPAN class="keyword token">true</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>

Also, this is how I am getting the watermain layer, but I don't see any issues here either:

FeatureLayer waterMainLayer<SPAN class="punctuation token">;</SPAN>

waterMainLayer <SPAN class="operator token">=</SPAN> map<SPAN class="punctuation token">.</SPAN><SPAN class="token function">GetLayersAsFlattenedList</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">.</SPAN>OfType<SPAN class="operator token"><</SPAN>FeatureLayer<SPAN class="operator token">></SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="token function">Where</SPAN><SPAN class="punctuation token">(</SPAN>l <SPAN class="operator token">=</SPAN><SPAN class="operator token">></SPAN> l<SPAN class="punctuation token">.</SPAN>Name<SPAN class="punctuation token">.</SPAN><SPAN class="token function">IndexOf</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="string token">"GISWRKS1.WORKS.WaterMain"</SPAN><SPAN class="punctuation token">,</SPAN> StringComparison<SPAN class="punctuation token">.</SPAN>CurrentCultureIgnoreCase<SPAN class="punctuation token">)</SPAN> <SPAN class="operator token">>=</SPAN> <SPAN class="number token">0</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="token function">FirstOrDefault</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>

Wolf

And the tool has snapping turned on too:

UseSnapping <SPAN class="operator token">=</SPAN> <SPAN class="keyword token">true</SPAN><SPAN class="punctuation token">;</SPAN><SPAN class="line-numbers-rows"><SPAN>‍</SPAN></SPAN>

BrianBulla

Hi Wolfgang Kaiser‌,

Yes, within OnToolActivateAsync I have the tool turn it on, just in case the user doesn't. And in my testing it is definitely turned on.

<SPAN class="comment token">//turn on snapping in case the user does not have it set in their map</SPAN>
Snapping<SPAN class="punctuation token">.</SPAN>IsEnabled <SPAN class="operator token">=</SPAN> <SPAN class="keyword token">true</SPAN><SPAN class="punctuation token">;</SPAN>
Snapping<SPAN class="punctuation token">.</SPAN><SPAN class="token function">SetSnapMode</SPAN><SPAN class="punctuation token">(</SPAN>SnapMode<SPAN class="punctuation token">.</SPAN>Edge<SPAN class="punctuation token">,</SPAN> <SPAN class="keyword token">true</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
Snapping<SPAN class="punctuation token">.</SPAN><SPAN class="token function">SetSnapMode</SPAN><SPAN class="punctuation token">(</SPAN>SnapMode<SPAN class="punctuation token">.</SPAN>End<SPAN class="punctuation token">,</SPAN> <SPAN class="keyword token">true</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>

Wolf

Hi Brian,

I would take a look at the 'snapping' settings in your add-in. You should see snapping enabled when you activate the tool - so with my sample I see this under the crosshair cursor:

If you can't see the 'snapping' indicator, look at all 'snapping' settings in my add-in sample code. Actually I think Vertex and Intersection snapping are not really needed (this was copy/paste inheritance).

<SPAN class="keyword token">public</SPAN> <SPAN class="token function">SnapPointsToLine</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN>
<SPAN class="punctuation token">{</SPAN>
  IsSketchTool <SPAN class="operator token">=</SPAN> <SPAN class="keyword token">true</SPAN><SPAN class="punctuation token">;</SPAN>
  UseSnapping <SPAN class="operator token">=</SPAN> <SPAN class="keyword token">true</SPAN><SPAN class="punctuation token">;</SPAN>
  SketchType <SPAN class="operator token">=</SPAN> SketchGeometryType<SPAN class="punctuation token">.</SPAN>Line<SPAN class="punctuation token">;</SPAN>
  SketchOutputMode <SPAN class="operator token">=</SPAN> SketchOutputMode<SPAN class="punctuation token">.</SPAN>Map<SPAN class="punctuation token">;</SPAN>
<SPAN class="punctuation token">}</SPAN>

<SPAN class="keyword token">protected</SPAN> <SPAN class="keyword token">override</SPAN> Task <SPAN class="token function">OnToolActivateAsync</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="keyword token">bool</SPAN> active<SPAN class="punctuation token">)</SPAN>
<SPAN class="punctuation token">{</SPAN>
  <SPAN class="keyword token">var</SPAN> lineLayerName <SPAN class="operator token">=</SPAN> <SPAN class="string token">"TestLines"</SPAN><SPAN class="punctuation token">;</SPAN>
  <SPAN class="keyword token">var</SPAN> lineLayer <SPAN class="operator token">=</SPAN> MapView<SPAN class="punctuation token">.</SPAN>Active<SPAN class="punctuation token">.</SPAN>Map<SPAN class="punctuation token">.</SPAN><SPAN class="token function">GetLayersAsFlattenedList</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">.</SPAN>OfType<SPAN class="operator token"><</SPAN>FeatureLayer<SPAN class="operator token">></SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="token function">Where</SPAN><SPAN class="punctuation token">(</SPAN>fl <SPAN class="operator token">=</SPAN><SPAN class="operator token">></SPAN> fl<SPAN class="punctuation token">.</SPAN>Name<SPAN class="punctuation token">.</SPAN><SPAN class="token function">Equals</SPAN><SPAN class="punctuation token">(</SPAN>lineLayerName<SPAN class="punctuation token">,</SPAN> StringComparison<SPAN class="punctuation token">.</SPAN>OrdinalIgnoreCase<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="token function">FirstOrDefault</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
  <SPAN class="keyword token">if</SPAN> <SPAN class="punctuation token">(</SPAN>lineLayer <SPAN class="operator token">!=</SPAN> <SPAN class="keyword token">null</SPAN><SPAN class="punctuation token">)</SPAN>
  <SPAN class="punctuation token">{</SPAN>
    Snapping<SPAN class="punctuation token">.</SPAN>IsEnabled <SPAN class="operator token">=</SPAN> <SPAN class="keyword token">true</SPAN><SPAN class="punctuation token">;</SPAN>
    Snapping<SPAN class="punctuation token">.</SPAN><SPAN class="token function">SetLayerSnapModes</SPAN><SPAN class="punctuation token">(</SPAN>lineLayer<SPAN class="punctuation token">,</SPAN> SnapMode<SPAN class="punctuation token">.</SPAN>Vertex<SPAN class="punctuation token">,</SPAN> <SPAN class="keyword token">true</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
    Snapping<SPAN class="punctuation token">.</SPAN><SPAN class="token function">SetLayerSnapModes</SPAN><SPAN class="punctuation token">(</SPAN>lineLayer<SPAN class="punctuation token">,</SPAN> SnapMode<SPAN class="punctuation token">.</SPAN>Edge<SPAN class="punctuation token">,</SPAN> <SPAN class="keyword token">true</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
    Snapping<SPAN class="punctuation token">.</SPAN><SPAN class="token function">SetLayerSnapModes</SPAN><SPAN class="punctuation token">(</SPAN>lineLayer<SPAN class="punctuation token">,</SPAN> SnapMode<SPAN class="punctuation token">.</SPAN>Intersection<SPAN class="punctuation token">,</SPAN> <SPAN class="keyword token">true</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
  <SPAN class="punctuation token">}</SPAN>
  <SPAN class="keyword token">return</SPAN> <SPAN class="keyword token">base</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="token function">OnToolActivateAsync</SPAN><SPAN class="punctuation token">(</SPAN>active<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>

BrianBulla

Hi Wolfgang Kaiser‌. Thanks for creatign that.

After running your tool, it is working with all of my layers. Did you do something different in yours?? I still don't understand why the exact same code is returning false when I run it.

I renamed the layer causing problems to TestLines, and it worked with yours.

Wolf

Hi Brian,

I made a small sample add-in that includes your method and was not able to duplicate your problem. I attached the sample (please make sure to run the "pro fix references" tool to fix the Pro assembly references before you build). When I run the sample with UseSnapping set to true, I can't get IntersectsLayer to fail. With snapping off, I can see IntersectsLayer return false which is expected. I am using overlay graphics to allow zooming in closely into the start point area to see if the watermain line and start point intersect:

The sample requires a TestLines feature class since i used the C:\Data\FeatureTest sample data from community samples.

SnappingPointsToLine.zip

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