ArcObjects is a set of COM-based APIs from ESRI Inc. that are used in several of their products including ArcGIS Desktop, ArcGIS Engine and ArcGIS Server.

learn more… | top users | synonyms (3)

6
votes
5answers
3k views

What is hierarchy (object model) of features in ArcGIS?

I'm new to GIS. My understanding of shapefiles is that they are (contain?) featureclasses, that contain features (points, polylines, polygons). Is there a clear hierarchy for these files. Would the ...
6
votes
4answers
417 views

Storing ArcObject inside BLOB or XML field of geodatabase?

Is it possible to store an ESRI object inside a blob field inside a geodatabase? If not, perhaps a serialized XML representation? I'm thinking about storing IFeatureRenderers inside these fields. ...
6
votes
2answers
382 views

How do I query a string in Arcobjects that has a single quote in it?

I'm trying to query values using a cursor and loop for the process of removing diacritics. The problem I am running in to is that when I try to create a WhereClause like so... qf.WhereClause = ...
6
votes
4answers
1k views

Deriving separate polylines from coded points using ArcObjects (Figure inside)

I have a single point featureclass that represents the left and right sides of a landform (the points are coded as either 'right' or 'left'). Visually I can pick out and digitize two lines along these ...
6
votes
6answers
1k views

How do I remove a join (between a standalone table and a feature layer) with ArcObjects?

I already know how to do a table join with ArcObjects, via the IDisplayTable, IMemoryRelationshipClassFactory etc. interfaces. Here are some links to resources that have example code for this: ...
6
votes
6answers
9k views

ArcObjects - Create and Draw a Transparent Polygon

I'm trying to create a transparent Polygon in ArcMap; however, it's never transparent. Here's the code I have. // Create polygon IPolygon polygon = new PolygonClass(); // create & add ...
6
votes
3answers
3k views

What is the target .NET Framework of ESRI ArcObjects SDK 10.2

I had ArcMap 10 Add-In project built with ArcObjects SDK for .NET 10.1 where I could not reference external COM DLL build on .NET 4.0 due to a .NET forward compatibility issue. (ArcObjects SDK 10.1 ...
6
votes
2answers
2k views

ArcObjects + comtypes at 10.1 and newer

Has anyone played around with using ArcObjects in Python at version 10.1? I am having all sorts of problems, such as TypeErrors when wrapping the ESRI OLB modules and AttributeErrors when attempting ...
6
votes
2answers
2k 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 ...
6
votes
3answers
4k views

ArcObjects 10 - copying fields (table structure) to a new feature class

I'm creating a new feature class with the attribute table schema (field names, types etc.) copied from another feature class. Then, I'd like to modify this schema slightly (e.g. add an additional ...
6
votes
2answers
818 views

Alternatives to ArcGIS Extensions using ArcObjects?

I was wondering if there are any projects based around using ArcObjects and external libraries to create open source alternatives to extensions in ArcGIS. For example 3D Analyst, Spatial Analyst etc ...
6
votes
3answers
4k views

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 ...
6
votes
2answers
1k views

Does anyone know a function to determine if a Point exists within a polygon?

Does anyone know a function to determine if a Point exists within a polygon? Edit: I'm using C# with ArcEngine10.
6
votes
1answer
3k views

Selecting the MAX value from a feature using ArcObjects?

I have a feature (point) with a field called 'Sequence'. The values in this column range from 1 to n. I can use IQueryFilter to get the first value, 1. Dim pQry As IQueryFilter = ...
6
votes
2answers
1k views

MapScale not being persisted properly in mxd when programmatically changed outside of ArcMap environment

I am trying to change the scale of a map in an mxd OUTSIDE of ArcMap in a standalone Windows application. The problem is the scale is never persisted - the best code I have come up with is the ...
6
votes
6answers
2k 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 ...
6
votes
1answer
739 views

Getting table Name from IObjectClass using ArcObjects?

I'm using IRelationshipClass.DestinationClass to get an IObjectClass. From here, I want to be able to get the table name, but can only access the AliasName. Any ideas? The IObjectClass can be ...
6
votes
3answers
2k views

Is it possible to target an ArcMap add-in to an earlier version?

My development environment is Visual studio 2010 with ArcGIS Desktop 10.1 installed. I need my add-in to support 10.0 AND 10.1. Right now, if I try to install it on ArcMap 10.0, it fails. Is it ...
6
votes
2answers
173 views

What event is fired when a feature is edited?

When the user draws a new feature (line, point, etc.) in ArcMap, there are null attributes. If the user enters values in these null fields what is the event that is fired? I want to control the ...
6
votes
2answers
1k views

How are Class Extensions associated with a Feature Class in ArcGIS v10?

In ArcGIS 9.x if a Feature Class is registered with a Class Extension the CLSID of the extension is recorded in a table in the sde schema called sde.GDB_OBJECTCLASSES (EXTCLSID field). However in ...
6
votes
1answer
607 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 ...
6
votes
1answer
798 views

Automating ArcMap with ArcObjects for unit testing?

I need to run unit tests against ArcMap extension which closely coupled with specific edit workspace and map state. When I try to initialize ArcMap 10 application with code like this: ...
6
votes
2answers
985 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 ...
6
votes
1answer
2k views

Zooming to first queried feature using ArcObjects?

I'm attempting to query a feature class for all features that meet a certain criterion (in this case, the Status field is NULL). However, I'm not getting very far into the attempted method before ...
6
votes
2answers
4k views

Exporting selected features to a new shape file

I have a street layer and I only need to export a subset of features to a new shape file where the "TestDone" attribute field is not '0' (Zero). My current code ( which is pasted below ) exports the ...
6
votes
2answers
2k views

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 ...
6
votes
2answers
675 views

Calculating projected distance using ArcObjects?

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. We mean to do those calculations within our ...
6
votes
1answer
756 views

How to programmatically clear all layers from data frame?

I'm trying to create a button using VB.NET and ArcGIS 10 to clear the layers of my data frame. I know how to add layers, but I don't have any idea on how to delete/clear them. Any suggestions? ...
6
votes
1answer
3k 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 ...
6
votes
2answers
1k views

How to convert GML to features in ArcObjects?

How to convert GML to features and features to GML i ArcObjects? We are building an application where we want to communicate with a service with GML but natively in our stand-alone application we ...
6
votes
2answers
691 views

Error: can't display dash lines (broken lines) when zooming PageLayout

I am working with PageLayoutControl, its mapframe include elements: lines, texts. And I am getting an error when zooming: If I zoom the pagelayout to 100% ( smaller than 110%), it can display "Dash ...
6
votes
3answers
448 views

What types of GIS problems does functional programming address?

After reading @ray vernagus post about using ArcObjects with F#, I have been wondering ... what types of GIS problems are better handled by Functional Programming, as opposed to more traditional forms ...
6
votes
1answer
1k views

How to always enable an ArcGIS toolbar?

On ArcMap 9.3.1, is there a way to ensure that a toolbar is always enabled? In my case, I want the Standard toolbar (the one with new/open/save/print icons) to always be visible. I'd like the ...
6
votes
2answers
1k views

Problems when trying to Undo edit operations in ArcGIS

I'm trying to programatically stop/abort/undo an edit operation inside a ArcSDE environment. My environment is currently Oracle, ArcSDE 9.3.1 and in our custom code (I inherited a large ugly portion ...
6
votes
1answer
566 views

Annotation features containing both GraphicElement and TextElement objects not drawing in ArcGIS Server map service?

I am building annotation features with Python/comtypes/ArcObjects. The annotation works great in ArcMap (10.1), but it is does not draw when published to a map service in ArcGIS Server. Each piece ...
6
votes
1answer
215 views

How is IValidate.GetInvalidRules supposed to work?

we are currently trying to programmatically validate features against geodatabase-defined rules. This includes attribute rules as well as connectivity and relationship rules. We have consulted the ...
6
votes
1answer
312 views

Use existing property pages with new IFeatureRenderer

I am trying to override the drawing of a feature within a custom plugin data source. I believe this entails making a custom IFeatureRenderer. However, the "renderer" I'd like to design would be 99% ...
6
votes
1answer
1k views

ArcObjects C#: Create Random Points fails with ERROR 999999: Error executing function

I am having trouble running some ArcObjects C# code that calls create random points. I would not be doing this in ArcObjects, but I am suffering with the same issue using Arcpy as seen here: ...
6
votes
2answers
569 views

How can I add a new field in a raster attribute table and loop through it?

I am working with an existing raster attribute table. I wonder how can I add a new field to it and then loop through the existing records to populate this new field? Of course I have done this many ...
6
votes
2answers
924 views

Display map scale (like 1:20.000) next to ScaleBar

In my PageLayoutControl I add a ScaleBar. Additionaly I like to show the map scale/ratio (e.g. "1:20.000") next to it, but didn't find a way to achieve this with the ScaleBar. Am I missing something ...
6
votes
1answer
911 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 ...
6
votes
1answer
1k 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 ...
6
votes
1answer
254 views

How can I get more verbose messages from a GP service?

When I run a tool I've published as a gp service, the only messages I get are these: esriJobMessageTypeInformative: Submitted. esriJobMessageTypeInformative: Executing... ...
6
votes
1answer
908 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 ...
6
votes
1answer
179 views

How to add a new Parcel inside Parcel Fabric from existing parcel features (ArcObjects)

I want to create a new parcel in a parcel fabric layer. I have the x, y coordinates for the parcels to be created. I searched around a lot and found really nothing that actually "CREATES" a parcel. ...
6
votes
1answer
211 views

How to create ArcSDE Geodatabase in PostgreSQL without ArcGIS Desktop?

I am programming a small application using Arcobjects, and I need to create an ArcSDE geodatabase on PostgreSQL. In ArcSDE at 10.2 there is no Post Installation Wizard. How do I create a Geodatabase ...
6
votes
3answers
329 views

Filtering features using geometric attributes of polygons in ArcGIS Desktop?

Given a polygon featureclass containing many polygons of different sizes and shapes, which geometric attributes (area, perimeter, etc) could be used to filter the polygons? It's probably best to ask ...
6
votes
2answers
983 views

IFeatureClass.Search throws error “0x80041599 The number of points is less than required for feature”

I am creating a buffered geometry around a point feature in order to search for other nearby features. I use the TopologicalOperator to create my buffered geometry. I am attempting to search a feature ...
6
votes
2answers
2k views

How to find all ICommandItem instances of a custom button command in an ArcMap add-in?

I have an ArcMap 10.0 add-in in which I have a button that the user can place (using the Customize dialog in ArcMap) on any toolbar including user-created toolbars as well as standard ones or even 3rd ...
6
votes
1answer
1k views

ArcGIS 10: AddIn Extension loading toolbox issue

I have an extension class in an ArcMap addin project of which loads a custom toolbox into ArcToolbox when the user opens ArcMap or opens a previously created map. My toolbox gets added to ArcToolbox ...