Latest Contributions by GaryBroyd

Hi everybody, I'm in the process of moving our VB6 code which integrates with ArcMap to .Net and have run into a problem trying to add some PolyLines into a shape file.  We use very similar code for adding points into a shape file but can't work out why it's coming up with the error: No support for this geometry type We are creating a Shape File and populating it with PolyLine features from a series of coordinates (these are used to symbolise a link between two other map items "Points" that exist in a separate layer) Here is the basic code (some variables etc are defined elsewhere but it the basic ArcObjects interaction is there).  It throws the exception on the last line of code: //Create a Shape file workspace factory ESRI.ArcGIS.DataSourcesFile.ShapefileWorkspaceFactory shapefileWorkspaceFactory = CreateObject( "esriDataSourcesFile.ShapefileWorkspaceFactory" ) as ESRI.ArcGIS.DataSourcesFile.ShapefileWorkspaceFactory; ESRI.ArcGIS.Geodatabase.IFeatureWorkspace featureWorkspace = shapefileWorkspaceFactory.OpenFromFile( System.IO.Path.GetDirectoryName( linksDataFilePath ), 0 ) as IFeatureWorkspace; IWorkspace workspace = featureWorkspace as IWorkspace; ESRI.ArcGIS.Geodatabase.IFields fields = new ESRI.ArcGIS.Geodatabase.Fields(); ESRI.ArcGIS.Geodatabase.IFieldsEdit fieldsEdit = fields as ESRI.ArcGIS.Geodatabase.IFieldsEdit; IField shapeField = new ESRI.ArcGIS.Geodatabase.Field(); IFieldEdit shapeFieldEdit = shapeField as IFieldEdit; shapeFieldEdit.Name_2 = "Shape"; shapeFieldEdit.Type_2 = esriFieldType.esriFieldTypeGeometry; IGeometryDef geometryDef = CreateObject( "esriGeoDatabase.GeometryDef" ) as IGeometryDef; IGeometryDefEdit geometryDefEdit = geometryDef as IGeometryDefEdit; geometryDefEdit.GeometryType_2 = esriGeometryType.esriGeometryPolyline; ISpatialReference spatialReference = CreateObject( "esriDataSourcesFile.UnknownCoordinateSystem" ) as ISpatialReference; geometryDefEdit.SpatialReference_2 = spatialReference; shapeFieldEdit.GeometryDef_2 = geometryDef; fieldsEdit.AddField( shapeField ); IFeatureClass featureClass = featureWorkspace.CreateFeatureClass( filenameOnly, fields, null, null, esriFeatureType.esriFTSimple, shapeFieldEdit.Name, "" ); CreateFields( headerLine, featureClass ); ITable table = featureClass as ITable; ICursor cursor = table.Insert( false ); IRowBuffer rowBuffer = table.CreateRowBuffer(); IFeature lineFeature = rowBuffer as IFeature; IPoint startPoint = CreateObject( "esriGeometry.Point" ) as IPoint; IPoint endPoint = CreateObject( "esriGeometry.Point" ) as IPoint; ILine line = CreateObject( "esriGeometry.Line" ) as ILine; IGeometryCollection polyLine = CreateObject( "esriGeometry.PolyLine" ) as IGeometryCollection; ISegmentCollection path = CreateObject( "esriGeometry.Path" ) as ISegmentCollection; //Coordinate variables (of type double) defined elsewhere startPoint.PutCoords( x1, y1 ); endPoint.PutCoords( x2, y2 ); line.PutCoords( startPoint, endPoint ); object missing1 = Type.Missing; object missing2 = Type.Missing; path.AddSegment( (ISegment)line, ref missing1, ref missing2 ); polyLine.AddGeometry( (IGeometry)path, ref missing1, ref missing2 ); //Set the field values in rowBuffer.set_Value( 3, mapId ); rowBuffer.set_Value( 4, mapColour ); rowBuffer.set_Value( 5, mapDirection ); rowBuffer.set_Value( 6, x1 ); rowBuffer.set_Value( 7, y1 ); rowBuffer.set_Value( 8, x2 ); rowBuffer.set_Value( 9, y2 ); cursor.InsertRow( rowBuffer ); //*************************************** //THROW THE EXCEPTION HERE lineFeature.Shape = (IGeometry)path; //*************************************** ... View more

Hi Everybody, I'm in the process of trying to port our VB6 code (which worked fine with 9.3) to .Net for use with ArcGIS 10 and am having problems.  I had an earlier post which dealt with some other problems but have now run into further issues. It is to do with trying creating a feature class which is populated with a number of records (e.g. locations on a map) which is then added to a feature layer (supposedly fine but can't confirm this yet - but one problem at a time!!!)  I then create a UniqueValueRenderer (to attach to the featureLayer) and add a multi-field symbol to it and this is where I'm having problems.  The following code seems to run through fine without erroring and I can confirm things like file paths are valid etc) private void SymbolLayer( IFeatureLayer featureLayer, string mapDataFilePath, IDictionary<string, Symbol> symbols ) { IFields fields = featureLayer.FeatureClass.Fields; //Get indexes of certain fields int mapStyle = fields.FindField( "MAP_STYLE" ); int mapBMP = fields.FindField( "MAP_BMP" ); int mapSymbol = fields.FindField( "MAP_SYMBOL" ); IGeoFeatureLayer geoFeatureLayer = featureLayer as IGeoFeatureLayer; IPictureMarkerSymbol pictureMarkSymbol; IUniqueValueRenderer uniqueValueRenderer; UID uid = new UID(); IObjectFactory objectFactory = mApplication as IObjectFactory; uid.Value = "esriCarto.UniqueValueRenderer"; uniqueValueRenderer = objectFactory.Create( uid ) as IUniqueValueRenderer; //The fields which are used to map to the symbol uniqueValueRenderer.FieldCount = 3; uniqueValueRenderer.FieldDelimiter = ","; uniqueValueRenderer.set_Field( 0, fields.get_Field( mapBMP ).Name ); uniqueValueRenderer.set_Field( 1, fields.get_Field( mapStyle ).Name ); uniqueValueRenderer.set_Field( 2, fields.get_Field( mapSymbol ).Name ); //Create the symbol string bmpFile = "C:\ArcGIS Tests\place.bmp" ); IPictureMarkerSymbol pictureMarkerSymbol = new PictureMarkerSymbolClass(); IRgbColor transparencyColour = new RgbColorClass(); //Make the colour white transparencyColour.Blue = 255; transparencyColour.Green = 255; transparencyColour.Red = 255; //Generate the marker symbol from the bitmap filename pictureMarkerSymbol.CreateMarkerSymbolFromFile( esriIPictureType.esriIPictureBitmap, bmpFile ); pictureMarkerSymbol.Angle = 0; pictureMarkerSymbol.BitmapTransparencyColor = transparencyColour; pictureMarkerSymbol.Size = symbol.MapSize; pictureMarkerSymbol.XOffset = 0; pictureMarkerSymbol.YOffset = 0; ISymbol iSymbol = pictureMarkerSymbol as ISymbol; uniqueValueRenderer.AddValue( "place,0,0", null, iSymbol ); geoFeatureLayer.Renderer = uniqueValueRenderer as IFeatureRenderer; } What then happens in ArcMap is that I can see the feature layer listed in the Table of Contents pane, but there isn't an icon.  If I then edit the icon to bring up the "Symbol Selector" dialog and I notice that there isn't an image in the "Current Symbol" frame.  Clicking "Edit Symbol" seems to bring up an Open File dialog asking for the location of the bitmap - which I select before it continues onto the "Symbol Properties Editor" dialog.  Next to the "Picture..." button it says "No Picture Loaded" and again clicking on Picture asks for the bitmap location but when having chosen the correct file, it still doesn't update.  The only way I can get it to pick up the bitmap is to change the type of the symbol (e.g. to Simple Marker Symbol) and then back again and can then select the bitmap successfully.  This implies that something is missing when I'm creating my Symbol and adding it to the UniqueValueRenderer via AddValue().  Are the symptoms I described in ArcMap familar to anyone as to what is going wrong for it to not know where the bitmap is.  Or is there some update code I need to call before it will work (I'm alread calling "document.UpdateContents()" followed by "document.ActiveView.Refresh()" at the end anyway) Thanks, Gary ... View more

Hi everybody, We have been integrating our VB6 app with ArcMap for quite a few versions of ArcGIS now and have decided to move over to .Net due to VB6 no longer being supported (and we are going to have to do it for the next ArcGIS release anyway!) We are encountering a number of problems while porting our code.  At the moment we have basically translated the code (which worked fine under VB6 up to ArcGIS 9.3) as is with a few tweaks here and there based on other problems we have found (like having to create classes via factories instead of using "new" keyword) The one I'm stuck on now is one that seems to have plagued a few people but I can't seem to find any solutions which fix our problem. You'll have to forgive me, I'm not really familiar with ArcGIS and have been given the job of getting it working with ArcGIS 10 so I'm not really up to speed on the object model of ArcGIS. The error is bascially to do with calling CreateFeatureClass() in that it throws the error: Error: Error HRESULT E_FAIL has been returned from a call to a COM component. Now we have made sure we have the acquired the correct licence (it's an ArcEditor licence which we are using for in-house development purposes) as we have had other problems with this sort of thing while doing our port. Below is some of the code for a routine which is creating a Shape File.  At the bottom of the code snippet there is a try catch which is where the error occurs.  What is odd is when running from the IDE, if I put a break point in the catch, and upon getting the exception, drag it back up and re-run the line that errored again, it then works.  Also sometimes waiting long enough before running the CreateFeatureClass() line will mean it runs ok which makes me wonder if it's some sort of timing issue.  We aren't doing anything fnacy other than starting ArcMap (via IMxDocument object), loading a document (and waiting for the "OpenDocument" event to trigger) and then creating the Shape File (a few bits inbetween but these all work fine) Any way to the code: Type type = Type.GetTypeFromProgID( "esriDataSourcesFile.ShapefileWorkspaceFactory" ); ESRI.ArcGIS.DataSourcesFile.ShapefileWorkspaceFactory shapefileWorkspaceFactory = Activator.CreateInstance( type ) as ESRI.ArcGIS.DataSourcesFile.ShapefileWorkspaceFactory; ESRI.ArcGIS.Geodatabase.IFeatureWorkspace featureWorkspace; featureWorkspace = shapefileWorkspaceFactory.OpenFromFile( System.IO.Path.GetDirectoryName( mapDataFilePath ), 0 ) as IFeatureWorkspace; ESRI.ArcGIS.Geodatabase.IFields fields = new ESRI.ArcGIS.Geodatabase.Fields(); ESRI.ArcGIS.Geodatabase.IFieldsEdit fieldsEdit = fields as ESRI.ArcGIS.Geodatabase.IFieldsEdit; IField shapeField = new ESRI.ArcGIS.Geodatabase.Field(); IFieldEdit fieldEdit = shapeField as IFieldEdit; string filenameOnly = System.IO.Path.GetFileNameWithoutExtension(mapDataFilePath); fieldEdit.Name_2 = "Shape"; fieldEdit.Type_2 = esriFieldType.esriFieldTypeGeometry; IGeometryDef geometryDef = new GeometryDefClass(); IGeometryDefEdit geometryDefEdit = geometryDef as IGeometryDefEdit; geometryDefEdit.GeometryType_2 = esriGeometryType.esriGeometryPoint; geometryDefEdit.SpatialReference_2 = new UnknownCoordinateSystemClass(); fieldEdit.GeometryDef_2 = geometryDef; fieldsEdit.AddField( shapeField ); IFeatureClass featureClass; //********************************************************* //THIS IS WHERE THE EXCEPTION OCCURS //********************************************************* try { featureClass = featureWorkspace.CreateFeatureClass( "Data1", fields, null, null, esriFeatureType.esriFTSimple, "Shape", "" ); } catch ( Exception ex ) { Debug.Print( "Error: " + ex.Message ); }   Thanks, Gary ... View more