topic Re: Simple code to create a feature class and a feature in File Geodatabase API Questions

Simple code to create a feature class and a feature

mody_buchbinder — Fri, 27 Oct 2023 07:34:48 GMT

Does anybody have a sample in C# that create a GDB, create a feature class in it and add a point to this feature class.

Without using the XML as the example do?

Thanks

Re: Simple code to create a feature class and a feature

lmatteo — Fri, 27 Oct 2023 08:29:03 GMT

Hello,
Make sure to replace "C:\Path\To\Your\Geodatabase.gdb" with the path where you want to create your file geodatabase. This script creates a file geodatabase, a point feature class, and adds a point feature with attributes to it. I'm not using C, but I guess it should work. Let me know 😉

using System; using System.Runtime.InteropServices; using ESRI.ArcGIS.Geodatabase; using ESRI.ArcGIS.Geometry; using ESRI.ArcGIS.esriSystem; using ESRI.ArcGIS.DataSourcesFile; namespace CreateGeodatabase { class Program { [STAThread] static void Main(string[] args) { // Initialize the license IAoInitialize aoInit = new AoInitialize(); esriLicenseStatus licStatus = aoInit.Initialize(esriLicenseProductCode.esriLicenseProductCodeBasic); if (licStatus != esriLicenseStatus.esriLicenseCheckedOut) { Console.WriteLine("License initialization failed, exiting."); return; } try { // Create a file geodatabase IWorkspaceFactory workspaceFactory = new FileGDBWorkspaceFactoryClass(); IWorkspaceName workspaceName = workspaceFactory.Create(@"C:\Path\To\Your\Geodatabase.gdb", "MyGDB", null, 0); IName name = (IName)workspaceName; IWorkspace workspace = (IWorkspace)name.Open(); // Create a point feature class IFeatureWorkspace featureWorkspace = (IFeatureWorkspace)workspace; IFields fields = new FieldsClass(); IFieldsEdit fieldsEdit = (IFieldsEdit)fields; IField field = new FieldClass(); IFieldEdit fieldEdit = (IFieldEdit)field; fieldEdit.Name_2 = "Name"; fieldEdit.Type_2 = esriFieldType.esriFieldTypeString; fieldsEdit.AddField(field); IGeometryDef geometryDef = new GeometryDefClass(); IGeometryDefEdit geometryDefEdit = (IGeometryDefEdit)geometryDef; geometryDefEdit.GeometryType_2 = esriGeometryType.esriGeometryPoint; fieldsEdit.GeometryDef_2 = geometryDef; featureWorkspace.CreateFeatureClass("MyPointFC", fields, null, null, esriFeatureType.esriFTSimple, "Shape", ""); // Create a point feature and add it to the feature class IFeatureClass pointFeatureClass = featureWorkspace.OpenFeatureClass("MyPointFC"); IFeatureBuffer featureBuffer = pointFeatureClass.CreateFeatureBuffer(); IFeatureCursor featureCursor = pointFeatureClass.Insert(true); // Create a point geometry and set it on the feature IPoint point = new PointClass(); point.PutCoords(100.0, 50.0); featureBuffer.Shape = point; // Set attribute values int nameFieldIndex = featureBuffer.Fields.FindField("Name"); featureBuffer.set_Value(nameFieldIndex, "FirstPoint"); featureCursor.InsertFeature(featureBuffer); featureCursor.Flush(); Console.WriteLine("Point feature with attributes created."); Marshal.ReleaseComObject(workspace); Marshal.ReleaseComObject(workspaceFactory); Marshal.ReleaseComObject(aoInit); } catch (Exception ex) { Console.WriteLine("Error: " + ex.Message); } } } }

Re: Simple code to create a feature class and a feature

mody_buchbinder — Fri, 27 Oct 2023 14:55:32 GMT

Thanks but I look for code with geodatabase API that does not need a license

Re: Simple code to create a feature class and a feature

lmatteo — Mon, 30 Oct 2023 08:19:48 GMT

What about this ?

using System; using System.IO; using Esri.FileGDB; namespace CreateFileGDB { class Program { static void Main(string[] args) { // Define the path to your file geodatabase string gdbPath = @"C:\Path\To\Your\Geodatabase.gdb"; try { // Create a new File Geodatabase using (Geodatabase geodatabase = Geodatabase.Open(gdbPath, GeodatabaseOpenMode.Create)) { // Create a point feature class using (FeatureClassDescription fcDescription = new FeatureClassDescription()) { Field[] fields = fcDescription.RequiredFields; GeometryDef geometryDef = fcDescription.DefaultGeometryDef; using (FeatureClass featureClass = geodatabase.CreateFeatureClass("MyPointFC", fields, geometryDef)) { // Create a point feature and add it to the feature class using (RowBuffer rowBuffer = featureClass.CreateRowBuffer()) { using (PointShapeBuffer shapeBuffer = new PointShapeBuffer(geometryDef)) { shapeBuffer.SetPoint(0, 100.0, 50.0); rowBuffer.SetGeometry(shapeBuffer); // Set attribute values rowBuffer["Name"] = "FirstPoint"; using (Row row = featureClass.CreateRow(rowBuffer)) { Console.WriteLine("Point feature with attributes created."); } } } } } } } catch (GdbError e) { Console.WriteLine("Error: " + e.Message); } } } }