Geographic Information Systems

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An object-oriented programming language from Microsoft. It is the .NET version of the Visual Basic (VB) programming language.

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Re-projection issues with Azimuthal Equidistant

When reprojecting country-border polygons from longlat: +proj=longlat +datum=WGS84 +no_defs to Azimuthal Equidistant: +proj=aeqd +lat_0=26 +lon_0=126 +x_0=0 +y_0=0 +a=6371000 +b=6371000 +units=m +...
2
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0answers
21 views

OGR2OGR - cannot save to ShapeFile

I am trying to fix a bug in some software that exports to Shapefile and/or MapInfo files. I am struggling to wrap my head around this OGR2OGR stuff. The software will not export to shapefile and I ...
1
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1answer
25 views

ArcMap - ArcObjects IGeoFeatureLayer Renderer is giving a NullReferenceException

Refactoring a VBA add-in into VB.NET add-in. I'm getting: An unhandled exception of type ' System.NullReferenceException' occured in MyAddin.dll Additional information: Object reference not ...
1
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1answer
39 views

ArcMap - ArcObjects Text in Layout mode not showing

Refactoring VBA to VB.NET and most parts of the code is working expect for the part where I want to show the layername with today's date in the layout mode (pTextElement.Text) Any ideas why the text ...
0
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2answers
166 views

Using Open GIS’s KML Schema Definition (ogckml22.xsd), Microsoft.Net XML Schema Definition Tool Fails

In brief, on one hand, I expect Open GIS’s KML Schema Definition, i.e. ogckml22.xsd, to be rock solid; fully debugged. Likewise, Microsoft.Net’s XSD XML Schema Definition tool (https://docs....
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0answers
68 views

BC30456 'ITableSelection_SelectionChanged' is not a member of 'StandaloneTableClass'

I am seeing this error BC30456 when building this DLL for VB.Net ArcMap extension. I see the following in the ESRI.ArcGIS.Carto.xml which confuses me with the error. <member name="M:ESRI.ArcGIS....
1
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1answer
46 views

ArcMap / ArcObjects - Type “OLEDBWorkspaceFactory” is not defined when creating a new workspace

Making an Add-In for ArcMap, refactoring old VBA code into VB.NET. Trying to create a new workspace with ArcObjects in VB.NET. I am getting the error: BC30002 Type "OLEDBWorkspaceFactory" is not ...
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0answers
59 views

System.TypeLoadException: Types extending from COM objects should override all methods of an interface implemented by the base COM class

Ok, here is the situation. I am looking to get a custom arcobjects vb.net extension running correctly on ArcMap10.5. When loading nodes in an attachment viewer I receive the following error once ...
3
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3answers
350 views

Getting Layername from selected feature using ArcObjects?

I have a IEnumFeature list of selected Features obtained through IApplication.Document.ActiveView.Selection. From this selection I want to delete some feature, more specifically the features from one ...
1
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1answer
201 views

View and edit land parcels in MapWinGIS

I am developing a GIS_desktop application with VB.NET and MapWinGIS. When I load a shapefile into the application, it is displaying blocks instead of the actual polygons . The shapefile is supposed ...
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0answers
148 views

ArcMap add-in to make connection and load the database on VB.NET

I'm new at Arcobjects programming. Currently I'm trying to make an ArcMap Add-in which can connect and load a database into ArcMap. I have found samples on the Esri website, but it seems not to be ...
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0answers
157 views

ArcObjects queries using selection set

I'm new to ArcObjects and I'm finding it difficult to work with the ArcObjects 'Feature classes'. Coming to my problem, I have a Map with few layers. I have coded for the layer names to display in the ...
0
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1answer
90 views

How to get the column header of attribute table

I have a simple vb.net code which gets all the layer names present in the ArcMap and displays it in a vb form combobox. My question is if I select a layer name that is present in my combobox it should ...
0
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0answers
400 views

EPSG 4326 to 3857 works on X axis but not Y with PROJ4NET

I am trying to convert a EPSG:4326 Lat Long into a EPSG:3857 reference. I have looked all around and have found slight differences in WKTs but nothing with different values. The following code ...
1
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3answers
287 views

Why does DotSpatial return NaN for point reprojection?

From the master branch and examples @ https://github.com/DotSpatial/DotSpatial the following fills the xy array with NaN but we expect 1755668,5922511 Dim x As Double() = {2666109} Dim y As Double() =...
1
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1answer
162 views

Getting all aliasnames of featureClassLayer in ArcObjects?

I'm a novice in programming: I'm trying to create a code which gives me the alias name from the attribute table. This is the code below that I tried, but it gives me only the layernames instead of ...
0
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1answer
71 views

Creating Hillshade after selecting Raster through pGXDialog

I am trying to create an add-in button which opens a dialog box filtering only rasterdata sets. After that once I select a Raster dataset, the Hill shade operation should be applied to that Raster ...
2
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1answer
187 views

Why does Arcobjects IEditor operation not fire IEditEvents.OnCreateFeature?

I built an Arcobjects add-in in the past that records the username and datetime every time a feature is created or modified: Sub OnStartEditing_Handler() AddHandler Events.OnCreateFeature, ...
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2answers
186 views

Is there an ArcObjects equivalent to the CQL filter when working with WMS layers?

Is there an ArcObjects equivalent to the CQL filter when working with WMS layers? I have reviewed the documentation, but can't identify any way of filtering a WMS service. Can anyone point me in the ...
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0answers
115 views

AddIn button disabled in Data View but enabled in Layout View

VB.NET Addin for ArcMap 10.3 may be causing my Table of Contents to constantly refresh. I have a custom toolbar with a few buttons. I want all of the buttons to be disabled when in Data View and only ...
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0answers
342 views

WMTS request with brutile and sharp map return wrong parameter

I'm using brutile and sharpmap to send wmts request and show maps. here is my code: Public Shared Function Create() As ITileSource Dim uri As New Uri("http://91.98.30.14:8080/geoserver/gwc/...
2
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1answer
1k views

Overlaying an image on a point, on a map in sharpmap?

I can add points to a map but I want to show an image (like a baloon or location sign) instead of the default red circle for the points. how can I do that with Sharpmap? my code to draw points is: ...
1
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1answer
386 views

How to zoom to Feature in VB .net

I'm trying to zoom to a feature just like in Arcmap but in VB.net. I'm using Axmapcontrol to display the map. I've tried the following: Dim pCmdItem As ICommandItem Dim pUID As New UID pUID.Value = "{...
4
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1answer
155 views

ArcObjects add multiple inputs to GeoProcessor

I am trying to send multiples input features to the Geoprocessing.IGeoProcessor (to do an Intersect). I am doing this because I can't add the layer path since one of them is from ArcSDE. The example ...
1
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1answer
194 views

listen to Edit Session in ArcMap

I want listen to Edit Session in ArcMap. But every time when i click on my button in ArcMap, Applicaation crash down. If i debug, it stopped at AddHandler Events.OnStartEditing, AddressOf ...
1
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1answer
534 views

ProjNet Datum Transforms from EPSG:3785 to WGS84 y-error

I'm trying to write a method (in VB.NET) to transform datum from EPSG:3785 to WGS84. I'm currently making use of ProjNet in my solution so I used it to perform this transformation. I thought ...
0
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1answer
344 views

Looking for vb.net code to read and show attributetable fileld alias names in arcgis

have anybody codesnippets or complete code in vb.net to read and show the alias fieldnames of an attribute table of an shapefile in arcgis? To open the Shapefile, I have the following code: Public ...
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0answers
4k views

QGIS with c# or vb.net

Can I add QGIS as a Plugin in .net application and access it using c# or vb.net? As I can see QGIS plugins are consumed using C++ only.
4
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1answer
702 views

Getting feature class names within dataset with vb.net and ArcObjects?

I am totally new to arcobjects. I want to get the feature class names withın a dataset and add them to a listbox. I was able to get the dataset names but i do not know how to iterate through the ...
2
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1answer
502 views

Highlighting Feature From Selection Set using ArcObjects?

Is there a way in ArcObjects 10.4 that I can highlight a specific feature from a selection set. I'd like to give visual feedback to my users when they are highlighting a feature in my form. I want ...
3
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1answer
239 views

Not getting all decimal places when converting numbers to string (ArcObjects with VB .Net)

I would like to build some queries in my addin from layers in my map. I am having problems with double numeric types. esriFieldTypeDouble has 14 - 18 decimal places or more depending on the database ...
0
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1answer
843 views

How to draw line/multiline, polygon/multipolygon with SharpMap from Coordinate Source

I have a list of n points, exactly x objects in GeoJSON from a CouchDB. I want to generate lines/multilines and polygons/mutipolygons with SharpMap and add this to a Layer in VB.NET. For points its ...
1
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1answer
204 views

setting label expressions causing duplicate labels

kind of new to VB.NET. Trying to set my label expression for a layer. Essentially a user picks a layer from a combo box, hits a button, expression is applied on the layer and then the single shp file ...
0
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1answer
116 views

VB.net search for address in Geodatabase in ArcObjects

I am try to search for address in Geodatabase in ArcObjects using VB.NET I tray this sample but my database is large so when I use this sample in TextBox1_TextChanged it is slow ! How can I search ...
1
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0answers
44 views

Problem with MyBase when converting old VB.NET toolbar

I'm working on a project to convert and older set of ArcGIS tools that were developed for 9.x using VB.NET. I'm trying to convert them to an Add-In for 10.4. So far, I have created the Add-In and ...
2
votes
1answer
179 views

Getting reference to existing reference of dockable window in class in ArcMap Addin?

I have an addin for ArcMap 10.2 that has a dockable window. For what it's worth, this dockable window has a DataGridView to which the user can add features for review. These features are added from ...
0
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1answer
144 views

Hardwire definition query on layers in mxd VB.net

I am creating a tool that applies definition query to certain layers of the mxd. The user clicks the button and it should hardwire the definition query into the layer. This is useful if there are many ...
2
votes
1answer
221 views

Arcobjects Assign projection transformation to layer file in VB.net

I want to be able to transform a layer from WGS1984 to OSGB1936. I created a tool that extracts layers from several folders on our company network folders, using check boxes that user clicks. One of ...
2
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2answers
310 views

ESRI forms using hooks

This has been bugging me for a while. I can easily call a form from a button using ShowDialog() if I use standard vb.net windows form. However when I use the ESRI addin dockable window which uses ...
2
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1answer
370 views

x, y to decimal degrees on mouse click in ArcObjects?

I am converting an old VBA code I used to use in ArcMap 9.2, into VB.NET for ArcMap 10. It should extract x, y coordinates from OSGB and converts to decimal degrees while copying to clipboard. I ...
2
votes
1answer
573 views

ArcObjects VB.NET forms in ArcMap 10.0

I am trying to create a basic form using ArcObjects (VB.NET) to view in ArcMap 10.0. I have created the form using the designer but can't view it in ArcMap. I have created a button that will call the ...
1
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1answer
957 views

VB.net Converting UTM to Lat/Lon (State Plane with WKID) - ArcGis

I have looked at many libraries. Many simply don't work, others are very poorly documented. I have a very long list of X/Y coordinates (US FT) and an associated WKID. I am trying to convert that to ...
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0answers
30 views

IRasterLayerExport3 doesn't save raster until ArcMap closes [closed]

I'm trying to export raster using IRasterLayerExport3, but it saves raster file only after closing ArcMap. It seams that IRasterLayerExport3 creates placeholders for raster (empty file - 3kb), and it ...
1
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1answer
372 views

Finding Points where two polylines cross in ArcGIS Runtime .NET SDK?

I am using ArcGIS SDK for .NET and have a graphic overlay defined on my mapview. I added two circles to the map (made with polylines) which overlap. I now need to determine the points at which the ...
0
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1answer
270 views

Split by attributes with 2 fields

I am using SplitLayerByAttributes toolbox. It’s a very useful tool for me to process certain activities. As you know, I can split the feature class as per 1 field. What if I want to split the features ...
2
votes
1answer
291 views

I am making a selection with ArcObjects, is there an Issue with iSelectionSet:AddList or do i have an error somewhere?

I collect a set of OIDs into an OID array (long), this happens in a loop and if i find an OID i want to add to the array, I REDIM PRESERVE to expand the array. iOIDListCount = iOIDListCount + 1 ReDim ...
2
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2answers
1k views

Why am I unable to enable my addin extension?

I am working on an ArcObjects addin for Desktop 10.1. I am using the SelectionExtension as a template for my addin. I was unable to listen for events through a dockable window, so at others' ...
1
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1answer
218 views

Comparison between using VB.net or C# in ArcObjects or ArcGIS Server [closed]

Is there any differences between using VB.net or C# in ArcObjects or ArcGIS Server based projects, in functionalities, samples, Q&A community? Is there any comparison which covers these aspects to ...
4
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1answer
410 views

Listening for edit events through dockable window using ArcObjects?

I am creating a dockable window that allows users to select features of a particular featureclass, iterate through records in the featureclass, populate textboxes with certain attributes, and edit ...
-1
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2answers
384 views

Changing datasource of a .lyr file results in empty layer with empty symbology (ArcObjects VB.NET)

I'm having a hard time adding my grid to the map and changing its symbology with an existing lyr file. I have found a great post by Neil Clemmons that explains this, but it doesn't work for me. I ...

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