arcgis engine 二次开发考试指导文档.docx

0颜色方法 public IRgbColor GetRgbColor(int intR, int intG, int intB) { IRgbColor pRgbColor = null; if (intR 0 || intR 255 || intG 0 || intG 255 || intB 0 || intB 255) { return pRgbColor; } pRgbColor = new RgbColorClass(); pRgbColor.Red = intR; pRgbColor.Green = intG; pRgbColor.Blue = intB; return pRgbColor; }1IMapdocument加载mxdif (openFileDialog.ShowDialog() == DialogResult.OK) { string sFileName = openFileDialog.FileName; if (string.IsNullOrEmpty(sFileName)) { return; } if (axMapControl.CheckMxFile(sFileName)) { ClearAllData(); IMapDocument pMapDoc = new MapDocumentClass(); pMapDoc.Open(sFileName, ); axMapControl.Map = pMapDoc.ActiveView.FocusMap; axMapControl.ActiveView.Refresh(); } else { MessageBox.Show(选择了无效的地图文档【 + sFileName + 】！); }2加载mdb文件private void AddMdbFile(string sAccessFilePath) { if (string.IsNullOrEmpty(sAccessFilePath))return;ry { IWorkspaceFactory pWksFac = new AccessWorkspaceFactory(); IWorkspace pWks = pWksFac.OpenFromFile(sAccessFilePath, 0);IEnumDataset pEnumDs = pWks.get_Datasets(esriDatasetType.esriDTAny); pEnumDs.Reset(); IDataset pDs = pEnumDs.Next(); while (pDs != null) { if (pDs is IFeatureDataset) { IEnumDataset pEnumDs2 = pDs.Subsets; pEnumDs2.Reset(); IDataset pDs2 = pEnumDs2.Next(); while (pDs2 != null) { IFeatureClass pFeaCls = pDs2 as IFeatureClass; IFeatureLayer pFeaLyr = new FeatureLayerClass(); pFeaLyr.FeatureClass = pFeaCls; pFeaLyr.Name = pFeaCls.AliasName; axMapControl.Map.AddLayer(pFeaLyr); pDs2 = pEnumDs2.Next(); } } else if (pDs is IFeatureClass) { IFeatureClass pFeaCls = pDs as IFeatureClass; IFeatureLayer pFeaLyr = new FeatureLayerClass(); pFeaLyr.FeatureClass = pFeaCls; pFeaLyr.Name = pFeaCls.AliasName; axMapControl.Map.AddLayer(pFeaLyr); } pDs = pEnumDs.Next(); } axMapControl.ActiveView.Refresh(); } catch (Exception ex) { } 3加载shapfileprivate void AddShapeFile(string sShpFilePath) { if (string.IsNullOrEmpty(sShpFilePath)) { return; } try {string sFolderPath = sShpFilePath.Substring(0, sShpFilePath.LastIndexOf(\\));tri