ArcGIS Engine 开发中一些常用的语句

迈不过友情╰ 2022-08-21 03:09 188阅读 0赞

1  
ESRI.ArcGIS.RuntimeManager.Bind(ESRI.ArcGIS.ProductCode.EngineOrDesktop);  
ESRI.ArcGIS.RuntimeManager.BindLicense(ESRI.ArcGIS.ProductCode.Engine);  
  
  
2  
axMapControl1.MousePointer = esriControlsMousePointer.esriPointerHourglass;  
axMapControl1.LoadMxFile(filePath, 0, Type.Missing);  
axMapControl1.MousePointer = esriControlsMousePointer.esriPointerDefault;  
  
  
layer = axMapControl1.Map.get\_Layer(i);  
  
  
3  
  
  
IFeatureLayer featureLayer = layer as IFeatureLayer;  
IFeatureClass featureClass = featureLayer.FeatureClass;  
IDataset dataset = (IDataset)featureClass;  
IWorkspace workspace = dataset.Workspace;  
  
  
IWorkspaceEdit workspaceEdit = (IWorkspaceEdit)workspace;  
workspaceEdit.StartEditing(true);  
workspaceEdit.StartEditOperation();  
IFeatureBuffer featureBuffer = featureClass.CreateFeatureBuffer();  
IFeatureCursor featureCursor;  
  
  
featureCursor = featureClass.Search(null, true);  
IFeature feature;  
feature = featureCursor.NextFeature();  
while (feature!=null)  
\{  
        feature.Delete();  
        feature = featureCursor.NextFeature();  
\}  
  
  
featureCursor = featureClass.Insert(true);  
featureBuffer.Shape = geometry;  
object featureOID = featureCursor.InsertFeature(featureBuffer);  
  
  
featureCursor.Flush();  
  
  
workspaceEdit.StopEditOperation();  
workspaceEdit.StopEditing(true);  
System.Runtime.InteropServices.Marshal.ReleaseComObject (featureCursor);  
  
  
4  
  
  
IGeometryCollection geometryCollection = new MultipointClass();  
IMultipoint multipoint;  
object missing = Type.Missing;  
IPoint point;  
for (int i = 0; i < 10; i++)  
\{  
        point = new PointClass();  
        point.PutCoords(i \* 2, i \* 2);  
  
  
        geometryCollection.AddGeometry(point as IGeometry, ref missing, ref missing);  
\}  
multipoint = geometryCollection as IMultipoint;  
addFeature("multipoint", multipoint as IGeometry);  
this.axMapControl1.Extent = multipoint.Envelope;  
this.axMapControl1.Refresh();    
  
  
5  
IRgbColor rgbColor;  
rgbColor = new RgbColorClass();  
rgbColor.Red = 255;  
rgbColor.Green = 255;  
rgbColor.Blue = 0;  
object symbol = null;  
if (geometry.GeometryType == esriGeometryType.esriGeometryPolyline ||  
                geometry.GeometryType == esriGeometryType.esriGeometryLine)  
            \{  
                ISimpleLineSymbol simpleLineSymbol;  
                simpleLineSymbol = new SimpleLineSymbolClass();  
                simpleLineSymbol.Color = rgbColor;  
                simpleLineSymbol.Width = 5;  
                symbol = simpleLineSymbol;  
            \}  
            else  
            \{  
                ISimpleFillSymbol simpleFillSymbol;  
                simpleFillSymbol = new SimpleFillSymbolClass();  
                simpleFillSymbol.Color = rgbColor;  
                symbol = simpleFillSymbol;  
            \}  
axMapControl1.DrawShape(geometry, ref symbol);  
  
  
6  
  
  
            ISimpleLineSymbol simpleLineSymbol = new SimpleLineSymbolClass();  
              
            switch (style)  
            \{  
                case "Solid":  
                    simpleLineSymbol.Style = esriSimpleLineStyle.esriSLSSolid;  
                    break;  
                case "Dashed":  
                    simpleLineSymbol.Style = esriSimpleLineStyle.esriSLSDash;  
                    break;  
                case "Dotted":  
                    simpleLineSymbol.Style = esriSimpleLineStyle.esriSLSDot;  
                    break;  
                case "Dash-Dot":  
                    simpleLineSymbol.Style = esriSimpleLineStyle.esriSLSDashDot;  
                    break;  
                case "Dash-Dot-Dot":  
                    simpleLineSymbol.Style = esriSimpleLineStyle.esriSLSDashDotDot;  
                    break;  
                case "null":  
                    simpleLineSymbol.Style = esriSimpleLineStyle.esriSLSNull;  
                    break;  
            \}  
            simpleLineSymbol.Width = width;  
            IRgbColor rgbColor = getRGB(color.R, color.G, color.B);  
            simpleLineSymbol.Color = rgbColor;  
            return simpleLineSymbol;