Questions tagged [vb.net]

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

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17
votes
2answers
7k views

Create weighted Thiessen polygons?

I have a point shapefile and I create Thiessen (Voronoi) polygons programmatically using this scripting syntax: CreateThiessenPolygons_analysis (in_features, out_feature_class, fields_to_copy) ...
17
votes
6answers
8k views

How can I find the farthest point from a set of existing points?

I have a set of points as a shapefile and I want to find (the coordinates) of a new point which will have the longest possible distance from each of the existing points. Is that possible? If yes, is ...
12
votes
3answers
5k views

Connecting line features and determining the length of the longest line

I have a line feature (see image) representing a river that I created using the Stream_to_Feature tool. The attribute table contains several records representing different lines - the problem is the ...
10
votes
4answers
740 views

Does SHAPE_Length take into account elevation values?

Does the Shape_Length attribute take into account the elevation? For instance, if I have 3 points: A, B, and C A.X = 10 A.Y = 10 A.Z = 10 B.X = 10 B.Y = 10 B.Z = 50 C.X = 0 C.Y = 0 C.Z = 10 Then I ...
7
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 ...
7
votes
3answers
4k 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 = ...
7
votes
1answer
1k views

Turn off field programmatically in ArcMap via VB.Net

I'm creating an addin button in Arcmap via VB.net that when clicked, runs the identify tool. But I want only selected fields to appear in the identify dialog. My idea is to hide the unnecessary fields ...
6
votes
4answers
710 views

Migrate in a new programming GIS language

The last five years I have been working with VBA and ArcObjects for developing a specific application within ArcGIS. That project that began around 2008-2009 carried out with VBA and ArcObjects which ...
6
votes
3answers
1k views

Numbering polygons according to their spatial relationships?

I have, for example, this layer in postgresql (polygons): table : poly (objectid: integer, num: integer, shape: geometry) I want to enumerate the polygons from left to right and top to bottom like ...
6
votes
1answer
2k views

Unable to create .esriAddin; missing ESRI ArcGIS Add-in SDK components(s)?

What am I missing? I upgraded to ArcGIS 10.3 succesfully recompiled all other 20 or so addins after encountering a similar issue and renaming "ESRI.ArcGIS.AddIns.11.targets" to "ESRI.ArcGIS.AddIns....
6
votes
1answer
1k views

Creating button to clear all layers from data frame using ArcObjects and VB.NET? [closed]

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 how do I delete/clear them?
6
votes
1answer
632 views

Spatial Query works while stepping through debugger but not otherwise

ORIGINAL POST: I'm not actually sure whether this is a VB.net problem or an ESRI problem...but given the number of really odd ESRI quirks I've encountered, my money's on the latter... I have a piece ...
6
votes
1answer
535 views

Creating a VB.net Dataset in Visual Studio 2010 from an SDE Geodatabase

I am building an ArcMap Addin that contains several Windows Forms with controls that need to be bound to a database. I am trying to decide whether or not to use a native SQL Server Database or an SDE ...
5
votes
2answers
13k views

How do I change the targeted .NET 4.0 Framework to version 3.5 in an existing VS 2010 EXPRESS project?

I am upgrading from ArcGIS desktop 10.0 to 10.1 and I have a bunch of addins developed in VS 2008 Express using ArcObjects 10.0. I would like to upgrade everything to 10.1 using VS 2010 Express. I ...
5
votes
2answers
631 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 ...
5
votes
2answers
1k views

Visual Basic editor command icon is always disabled

I recently installed ArcGIS 9.3 in a PC with Windows 7.0. I opened an existing mxd file within which I developed some toolbars for a project. Each icon of a toolbar has behind it a VBA and ArcObjects ...
5
votes
1answer
2k views

Refresh Currently Open ArcMap Attribute Table using ArcObjects

I have written an ArcMap Addin (ArcMap 10.0) that allows a user to perform a join between an in-memory table and a feature class (feature layer) added to the TOC. I want the attribute table of the ...
5
votes
3answers
5k 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 ...
5
votes
2answers
5k views

Finding path where add-ins are installed for ArcGIS Desktop?

I see that my add-ins are installed to C:\Users\Me\AppData\Local\ESRI\Desktop10.0\AssemblyCache{6C90269B-D233-4122-3747-C2AE1131E22C} Is it possible to find that file path from within the Add-in ...
4
votes
4answers
2k views

Exploring ArcObjects through C# or VB from Python background

While I understand that this may be off topic to an extent, I am in a bit of a bind and could use some help directing my thought process and research. I have little programming background aside ...
4
votes
4answers
6k views

Sum the values of a single raster and output the value as a number?

I have a floating point raster and have applied a conditional to it in order to only extract the positive values, so there are 'no data' "holes" in the raster. I simply need to sum the values from ...
4
votes
2answers
1k views

ArcObjects VB.Net - Editing in Geodatabase

I have a script in VB.Net for grabbing values from one feature and assigning them to another. It works fine on shapefiles, but upon importing the same shapefiles into a file geodatabase, I get an ...
4
votes
1answer
6k views

Getting feature class from File Geodatabase in ArcObjects using VB.NET?

How do you open up a File GDB and read out a simple feature class? The snippet for retreiving a shapefile from a regular folder on disk works, and I suppose I can use the same code but with a ...
4
votes
2answers
1k views

Is IPolygon2.QueryExteriorRingsEx Method not working in ArcGIS version 10.1 SP1?

I am updating my addins from 10.0 to 10.1 and my code is crashing on the IPolygon2.QueryExteriorRingsEx Method. I understand there is something strange going on with this method because Developer ...
4
votes
3answers
2k views

Problem creating a point IFeatureClass

I'm trying to create a point IFeatureClass, but my code doesn't work. Public Function CreatePointFeatureClass(ByVal featureClassName As String, _ ByVal ...
4
votes
1answer
616 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 ...
4
votes
3answers
1k views

ArcObjects Background Process (Thread) Progress Bar?

Using a toolbar, written in ArcObjects, it is possible to push processing to a separate thread so that the GUI does not lock. Is it possible to have the thread update a progress bar in the same ...
4
votes
1answer
395 views

How to use IDatabaseCompact.Compact() on an used IWorkspace, without permission denied

I am writting an ArcMap-AddIn with vb.net. I get an error when trying to compact my IWorkspace(mdb), the error is: COMException You tried to open a database, which was already opened by the ...
4
votes
2answers
1k views

DLL As Embedded Resource ArcMap Add-In? VB.NET

I tried using StackOverflow, but I don't think anyone can answer my question in context(ArcMap Addins). I am currently developing an add-in that needs to load a custom control DLL as a dependency. ...
4
votes
1answer
3k views

Filtering a raster by pixel cluster size in ArcGIS?

I have a raster image representing islands in a river (see image) created using the following process: 1) Clip a water surface DEM and watershed DEM by a bounding polygon (waters' edge). 2) Subtract ...
4
votes
1answer
148 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 ...
4
votes
1answer
392 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 ...
3
votes
3answers
798 views

Enable Add-In Button if One Feature is Selected from Specific Layer

I am trying to enable an add-in button on my toolbar if only one feature is selected from a specifc Layer. For example, when ArMap loads, the button should be disabled. If the user selects one feature ...
3
votes
2answers
2k views

ArcObjects: Getting the properties of a layer that has lost its data source (VB.NET)

When you save an ArcGIS map document (MXD) and then change the data source of a layer in the MXD, you can no longer see the layer in the MXD and you must redefine its data source. But suppose you ...
3
votes
3answers
206 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 ...
3
votes
2answers
479 views

Finding layer based on source name using ArcObjects?

I am relatively new at creating tools with ArcObjects and I am having trouble finding a layer based on the layer's source name by looping through all layers. I've seen here that it is possible, but I ...
3
votes
2answers
714 views

vb.net arcobjects determine whether arcmap is in editing session

I have a vb.net arcmap addin which provide a function to validate geodb topology. But there is a problem, when I am not in editing session and use the function, arcmap will crash. In this case I ...
3
votes
3answers
1k views

Using ArcGIS Geoprocessing and 32/64 bit architecture with ArcObjects?

I am coding a VB.net console application using ArcObjects to call ArcGIS 10.1 geoprocessing tools. I have several geoprocessing calls that actually work, but that pop up an irritating message box when ...
3
votes
1answer
1k views

How do you set a polygon layers transparency in DotSpatial

How do you set a polygon layers transparency in DotSpatial? I'm using vb.net in visual studio express 2013 and using a Dotspatial nugets package which has given me DotSpatial version 1.7. Please see ...
3
votes
2answers
1k views

ArcObjects Geoprocessing Failures

I am working on launching the GenerateNearTable using the ArcObjects Assembly method. I have the advanced license (10.1), so the tool is available. The code to launch geoprocessing is: Private ...
3
votes
1answer
212 views

Field cannot be deleted because it is being used as relationship key?

I want to delete some fields of featureclasses, but when I run the code FeatureClass.DeleteField(Field) it works well for some featureclasses but after some time it gives an error such as: The ...
3
votes
2answers
1k views

How to loop through an array of point features?

I have a set of point features and I wish to find the points that have common coordinates. Now I changed the code as shwon bewlo by using the IPoint and the compare method through a function. I have 2 ...
3
votes
1answer
228 views

Is extrusion of a line (which is curved) into a plane at a certain angle possible in ArcGIS?

I have a polyline shape file which is a fault trace on earth's surface. I want to extrude this into a 3-D plane at a certain angle (which is dip angle of the fault). However, the extruded plane ...
3
votes
1answer
839 views

Counting distinct values in a field of a table stored in pgdb

I need to calculate total count of distinct values of a field . That field contains many duplicate values also. The table which contains that field is stored in pgdb. I want things done in vb .net. ...
3
votes
1answer
226 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 ...
3
votes
1answer
345 views

Row.Value returns rounded SHAPE.area and SHAPE.len values?

I have created a VB.Net Add-In, and am using IRow to get the value of fields in tables in ArcMap to use in a query. But I am encountering a problem when getting the values of the SHAPE.area and ...
3
votes
1answer
933 views

Executing Dissolve method in ArcGIS Engine?

I'm always having a problem in GP.execute() when trying to execute this method. Here is my code: Friend Function DissolveFeatures(ByVal pInFLayer As ESRI.ArcGIS.Carto.IFeatureLayer, ByVal ...
3
votes
1answer
502 views

ArcGIS 10 Addin Code Doesn't Execute on Another Computer? [duplicate]

I've created an ArcGIS 10 Addin that consists of a toolbar containing one button and one tool. The button opens a form, and the tool is disabled until the user enters some information on the form. ...
3
votes
1answer
693 views

Unable to create temporary GeoDatasets in g_g_g folders

I am converting a VBA macro that was written for ArcGIS 9.3 to a VB.NET project using the ArcGIS 10.0 .NET SDK. I am getting the following error whenever the code tries to create a temporary ...
3
votes
2answers
1k views

Add-in; Failure to get code to execute when toolbar button pressed

I had written several VBA routines for ArcGIS up through v9.3 and have since upgraded to 10. Since VBA will be a thing of the past in the next version, I downloaded and installed VB Express 2008 and ...