arcgisengine+C#新建點圖層，添加要素并且給要素賦值

        int bz = 0;

        private IWorkspace2 pWorkspace2;

        private IWorkspaceFactory wf;

        private IFeatureWorkspace fws;

        private IFields pFields;

        private IFieldsEdit pFieldsEdit;

        private IFeatureClass pFeatClass;

        private void button9_Click(object sender, EventArgs e)

        {

           

            object text = this.comboBox1.Text;

            //IWorkspaceFactory wf = new ShapefileWorkspaceFactoryClass();

            //IWorkspaceName wname = wf.Create("C:\\temp\\", "biaozhu", null, 0);

            //IName name_ = wname as IName;

            //IWorkspace workspace = (IWorkspace)name_.Open();

            if (bz == 0)

            {

                 wf = new ShapefileWorkspaceFactoryClass();

                IWorkspaceName wName = wf.Create(Application.StartupPath, "bz", null, 0);

                 fws = (IFeatureWorkspace)wf.OpenFromFile(Application.StartupPath + "\\bz", 0);

                 pWorkspace2 = fws as IWorkspace2;

                //設定欄位集   

                 pFields = new FieldsClass();

                 pFieldsEdit = (IFieldsEdit)pFields;



                //設定欄位   

                IField pField = new FieldClass();

                IFieldEdit pFieldEdit = (IFieldEdit)pField;



                //創建型別為幾何型別的欄位   

                pFieldEdit.Name_2 = "shape";

                pFieldEdit.Type_2 = esriFieldType.esriFieldTypeGeometry;



                ////設定投影坐標系為51N

                //ISpatialReferenceFactory spatialReferenceFactory = new SpatialReferenceEnvironmentClass();

                //IProjectedCoordinateSystem pcs = spatialReferenceFactory.CreateProjectedCoordinateSystem((int)esriSRProjCSType.esriSRProjCS_WGS1984UTM_51N);



                //設定地理坐標系為WGS84

                ISpatialReferenceFactory spatialReferenceFactory = new SpatialReferenceEnvironmentClass();

                IGeographicCoordinateSystem pcs = spatialReferenceFactory.CreateGeographicCoordinateSystem((int)esriSRGeoCSType.esriSRGeoCS_WGS1984);



                //設定幾何型別為點型別， 坐標系為上述

                IGeometryDef pGeoDef = new GeometryDefClass();

                IGeometryDefEdit pGeoDefEdit = (IGeometryDefEdit)pGeoDef;

                pGeoDefEdit.GeometryType_2 = esriGeometryType.esriGeometryPoint;

                pGeoDefEdit.SpatialReference_2 = pcs;

                //pGeoDefEdit.SpatialReference_2 = geographicCoordinateSystem;

                pFieldEdit.GeometryDef_2 = pGeoDef;

                pFieldsEdit.AddField(pField);



                //添加其他的欄位   

                pField = new FieldClass();

                pFieldEdit = (IFieldEdit)pField;

                pFieldEdit.Name_2 = "biaozhu";

                pFieldEdit.Type_2 = esriFieldType.esriFieldTypeString;

                pFieldsEdit.AddField(pField);



                //創建shapefile   

                 pFeatClass = fws.CreateFeatureClass("bz", pFields, null, null, esriFeatureType.esriFTSimple, "shape", "");

                bz = 1;

      }

           

            

         

            IWorkspaceEdit wedit;

            //IFeatureCursor featurecursor;

            wedit = pWorkspace2 as IWorkspaceEdit;

            wedit.StartEditing(false);

            wedit.StartEditOperation();

            //IFeature pFeature = pFeatClass.CreateFeature();

            IFeatureBuffer featureBuffer = pFeatClass.CreateFeatureBuffer();

            IFeatureCursor featurecursor = pFeatClass.Insert(true);

            IPoint pt = new PointClass();

            pt.X = Convert.ToDouble(this.textBox2.Text);

            pt.Y = Convert.ToDouble(this.textBox1.Text);

            pt.PutCoords(pt.X, pt.Y);

            int fieldIndex = pFields.FindField("biaozhu");

            object featureOID;    

            featureBuffer.Shape = pt;

            featureBuffer.set_Value(fieldIndex, text);

            featureOID = featurecursor.InsertFeature(featureBuffer);

            featurecursor.Flush();

            wedit.StopEditOperation();

            wedit.StopEditing(true);

            System.Runtime.InteropServices.Marshal.ReleaseComObject(pFields);

            System.Runtime.InteropServices.Marshal.ReleaseComObject(pFieldsEdit);

            System.Runtime.InteropServices.Marshal.ReleaseComObject(fws);

            System.Runtime.InteropServices.Marshal.ReleaseComObject(wf);



          

        }

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