ArcObjects is a set of COM-based APIs from ESRI Inc. that are used in several of their products, ArcGIS Desktop, ArcGIS Engine and ArcGIS Server.
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When is it better to use 64 bit File GDB access?
The beta 2 release File Geodatabase API includes 64 bit support.
Esri says arcobjects is still the "preferred" method to interact with the file gdb. However, arcobjects has no 64 bit support.
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No constructor defined?
In my C# Console Application, Visual Studio 2010 highlights new FeatureClassNameClass() in my below line of code and states "ESRI.ArcGIS.Geodatabase.FeatureClassNameClass has No constructors defined" ...
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118 views
How long should I hold onto (cache) references to IWorkspace, ITable, IFeatureClass?
After many months of programming with ArcObjects, I still feel somewhat unsure about two related issues:
For some operations, workspaces and datasets must be explicitly opened before they can be ...
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324 views
What does it mean to QI and how is it done?
I'm new to Esri's Arc* interfaces, and trying to figure out how to register an existing table using the ArcObjects API. The following question answers this to some extent:
Is there any way to write a ...
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How to use ArcObjects to choose GeoTransformation?
I’m currently building a Desktop add-in tool with ArcObjects that:
Asks a user to select a feature class
Reprojects the feature class to Web Mercator
Executes some geoprocessing
The initial ...
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1answer
505 views
Drag a Feature in ESRI, ArcObjects Engine (AxMapControl)
I'm trying to implement moving a point feature in a custom C# ArcGIS Engine application on an AxMapControl. I've already created a custom tool to do some other things. And I can track when the user is ...
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2answers
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How to convert Distance, Azimuth, Dip to XYZ?
I have an excel spreadsheet with header and survey drill data. Header data contains hole ID, and location coordinates, and the survey data contains related downhole survey with Distance, Azimuth and ...
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642 views
How to set a map's extent to the envelope in miles
I want to set extent of the map into envelope which sizes are defined by user in miles(kilometers, whatever human readable unit). How to make it? I wrote the following code:
static void ...
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2answers
993 views
Where is the feature cache in ArcMap?
It seems that ArcMap keeps a cache for every layer which contains features data and every time wants to refresh layer or apply a change,uses tis cache.As I found,when ArcMap wants to draw a layer from ...
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6answers
810 views
Access Violation in ArcObject Multi-threaded Application
I think I have figured it out. The most probable cause of exception in Multithreaded application may be:
When both threads trying to open same featureclass it breaks: coz one of the thread is ...
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2answers
202 views
Why esriSpatialRelTouches relation does not work?
I have two feature layers. The first one is just a polygon and the other one consists of a series of polygons which are enclosed by the first one. Thus, some polygons of the second feature layer touch ...
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304 views
What is an IFeatureClassName?
I'm currently attempting to export a selected set of data from a feature class in a database to another database as a new feature class. I understand everything perfectly right up to the ...
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393 views
Is it permissible to update features after the feature cursor has been released?
In ArcObjects, is it permissible to modify and update a feature after the feature cursor (which was used to retrieve the feature) has been released?
That is, do features in any way retain a link to ...
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216 views
Stubbing IFeature for unittests
I am trying to stub an IFeature with RhinoMocks, but I am having so much trouble doing it. Does anyone have experience with it?
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1answer
292 views
GDAL and ArcObjects in The Same Project - A Recipe For Disaster?
I am working on a project where I am attempting to use GDAL and ArcObjects together in the same project. Although the project itself is nothing more than a toolbar in ArcMap, I would like to use some ...
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2answers
415 views
Detect Table of Contents Changes in ArcMap using ArcObjects
What is the preferred and/or most efficient method for detecting a change in the table of contents in ArcMap using ArcObjects? My current implementation relies on a dictionary with the names and ...
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2answers
236 views
ArcObjects Class Extension - core events not being fired by an editing tool
I think I've just hit a major limitation with how ArcMap (10) deals with class extensions on a Feature Class but I would first like to make sure I'm not missing something or seeing a bug.
I have a ...
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1answer
687 views
How to persist a polygon to SQL Server database and vice versa?
How do I extract all the points from a Polygon drawn in ArcMAP and then persist that data into a SQLServer database table containing a geometry column and then when I've got the data persisted read ...
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425 views
ArcObjects - Get units from ISpatialReference
How do I get the units (meter/feet) from an ISpatialReference object in ArcObjects?
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How to identify polylines with multiple end/starting points?
I'm looking for a way to programmatically identify polyline features which do not represent a 'simple' line from A to B but instead have several starting and/or end points. These are called complex ...
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2answers
607 views
How to insert data to a table?
I have Table in ArcCatalog, table name: (WorkOrderAss) .
This table contains 3 columns : (OBJECTID , FeatureName , Name) .
I want to insert data to this table from the code behind in C#.
Any help ...
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2answers
1k views
Remove Shapefile lock
I have an ArcObject Dissolve procedure that creates a shp in a directory. This dissolved layer is a temp layer and is not added into ArcMap. I would like to delete it when the user clicks a button ...
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1answer
1k views
First attempt using ArcObjects: ESRI's Add-ins example unclear
I've come to realize that scripting ArcGIS 10.0 with Python imposes too many limitations for my goals with ArcGIS, so I've decided to bite the bullet and delve into ArcObjects.
Apparently, using ...
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1answer
988 views
ArcObjects: modifying feature field value
I'm developing an ArcMap extension and looking for a way to change feature attributes knowing its feature class and OID (and, presumably, everything else that there is in IFeature). All layers use ...
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4answers
567 views
Is accessing an mxd from an Msd based SOE safe?
I have a server object extension (SOE) that returns a list of legend items based on symbols that fall within a specified extent. This allows the client to update a legend to reflect on the symbols ...
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1answer
306 views
How can I pass a WorkspaceName to another thread for opening?
My winforms app gets an IWorkspaceName from an IDatasetName via the GxObject selected in a GxDialog. I want to pass it across to a worker thread for opening.
I know how to write multithreaded ...
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How to catch when scale is changed in ArcGIS?
We want to update a combobox so that it always shows the correct scale. If the user zooms-in, out or resizes the control hosting the map. What is the best event or events to catch and use in ArcGIS to ...
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209 views
When a class in an ArcGIS extension should be an ArcGIS class
Visual Studio templates provided by the ArcGIS SDK offer a "ArcGIS Class" which is a simple C# class that has the attributes Guid, ClassInterface, and ProgId before the class declaration.
While adding ...
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4answers
217 views
Need help to convert 9.3 code for registering .dll to 10.1
This is my code to register my DLL (im using ArcMap 9.3)
Private Sub regDLL(ByVal dllName As String)
Dim asm As System.Reflection.Assembly = System.Reflection.Assembly.LoadFile(dllName)
...
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3answers
673 views
How to let the user select a spatial reference using ArcObjects?
I need to build a tool where the user selects a coordinate system for a given CAD file. What is the easiest way to do this with ArcObjects?
Obviously, I could populate a list with the hundreds of ...
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1answer
1k views
ArcGIS 10 add-in: Bring dockable window to front
I have an ArcGIS 10 ArcMap add-in written in C# .NET 3.5 that implements an ESRI.ArcGIS.Desktop.AddIns.DockableWindow (which also inherits from UserControl) and an ESRI.ArcGIS.Desktop.AddIns.Tool that ...
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2answers
141 views
Calculating a projected distance
I am pretty new to this and I am not sure I understand all the concepts, so I might be using words wrongly or obviously not getting some details right. Here goes.
We mean to do those calculations ...
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2answers
137 views
Is it possible to modify the ArcObjects IProgressDialog2?
It turns out that the best way to run long tasks in ArcMap is to use the IProgressDialog2. The BackgroundWorker in combination with ArcObjects (STA Threads) is a mess.
However, it seems that the only ...
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2answers
325 views
ArcGIS - IExtension.Startup() not launching
I have an ArcGIS 10 extension that will not launch .Startup() when ArcMap loads. I can get it to hit when I go to Customize->Extensions and un-check/re-check the extension name.
Is there a setting ...
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1answer
437 views
Geometric Network - Listening to network feature connection changes in the IObjectClassEvents::OnChange event
I need to be able to tell when a particular type of feature, that participates in a geometric network, is having its geometry automatically modified due to the geometric network.
What i mean is that ...
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1answer
329 views
New Snapping while editing vertex's in ArcEngine 10
Is it possible to use the new (not classic) snapping functionality when editing the vertices of a polygon feature in ArcEngine 10. I would like editing vertices to behave exactly the same as editing ...
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2answers
586 views
Identify features
I am new to arcgis.I am building a custom desktop GIS application using arcgis engine 9.3.1 .I want to make a custom identify tool and add it to toolbar control.Any example or code will be helpfull.
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3answers
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finding nearest point to a point
I work in GIS with VBA. I have 2 Points layer.One of them is City points and another is hydro station points.I want write code in vba for selecting one point from station layer and finding closest ...
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3answers
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How can I determine the layer name in an edit session?
I have a problem with an editor extension in an Add-In for ArcGIS 10.
The editor extension listens on different events occuring on shapefile layers via registering listeners:
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1answer
149 views
Can you use ArcObjects in an MVC service at v10.1
I'm slighlty confused with the changes at 10.1 and understand this version no longer supports DCOM or remote arcobjects.
Can you use ArcObjects in a webservice (in my case a .NET MVC 4 service) that ...
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1answer
248 views
ArcObjects 10 Java SDK
I am being tasked with converting a AGS georpocessing toolkit currently written in AO 10 C# SDK to AO 10 Java SDK. Are there any resources out there which show an end to end example of creating an ...
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2answers
196 views
Zoom Commands as Mouse Gestures
Is it possible to use the zoom in, zoom out, and previous extent functions as mouse gestures in ArcMap? For example, say a user held down LShift then left click and dragged diagonally to the lower ...
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1answer
171 views
Reading an Existing Join
Confused again. I was finally able to run ArcCatalog and create a join in my map document (I will do the deed programmatically eventually) but I was interested in how a join looked once it was ...
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1answer
346 views
How to turn an IField from Not Editable to Editable?
so i have turned my ITable into an editable DataGridview from this post
link.
Now i want to set some of the columns to be non editable. So what I can do is initially set my IFieldEdit.Editable_2 to ...
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3answers
515 views
ArcGIS10 Debugging
First ever post to this forum,
I have a C# extension (legacy from another developer) which I am trying to debug in the ArcGIS 10 Environ (64bit machine/Windows7).
I have built the ext in "Debug" ...
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1answer
1k views
How to save a layer file with a relative path
In VBA, how do you save a layer file (.lyr) with a relative path?
I have some code that loads a shapefile into ArcMap but I am unsure of how I go about using this shapefile to then save a layer file ...
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1answer
756 views
Automate export of ArcMap legends
I've been building legends for my javascript websites that use 9.3.1 services. I know there's the ESRI legend tool for older services but I don't feel that it does a good job of producing legend ...
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1answer
250 views
Intersect between Surface and Ray
I am interested in finding the intersection of a Ray and a Surface in ArcObjects.
I already know of two solutions. First solution is to use the Locate method of ISurface:
Dim intersectionPoint As ...
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1answer
284 views
Generate Mobile Map Cache from ArcObjects
As of ArcGIS 10, is there a way to generate a mobile map cache using ArcObjects?
This can be done in a stand-alone Python script:
...
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1answer
728 views
Are there any good resources on WFS support in ArcGIS?
Are there any good resources on WFS support in ArcGIS?
The only documents I found so far are these: How_to_work_with_WFS_using_ArcGIS_Desktop and Consommer des services/données WFS dans ArcGIS 9.2 ...
