保存为栅格图片-MapControl截图——保存ActiveView为jpg图片
1 ///<summary>Creates a .jpg (JPEG) file from IActiveView. Default values of 96 DPI are used for the image creation.</summary> 2 /// 3 ///<param name="activeView">An IActiveView interface</param> 4 ///<param name="pathFileName">A System.String that the path and filename of the JPEG you want to create. Example: "C:\temp\test.jpg"</param> 5 /// 6 ///<returns>A System.Boolean indicating the success</returns> 7 /// 8 ///<remarks></remarks> 9 public System.Boolean CreateJPEGFromActiveView(ESRI.ArcGIS.Carto.IActiveView activeView, System.String pathFileName) 10 { 11 //parameter check 12 if (activeView == null || !(pathFileName.EndsWith(".jpg"))) 13 { 14 return false; 15 } 16 ESRI.ArcGIS.Output.IExport export = new ESRI.ArcGIS.Output.ExportJPEGClass(); 17 export.ExportFileName = pathFileName; 18 19 // Microsoft Windows default DPI resolution 20 export.Resolution = 96; 21 ESRI.ArcGIS.Display.tagRECT exportRECT = activeView.ExportFrame; 22 ESRI.ArcGIS.Geometry.IEnvelope envelope = new ESRI.ArcGIS.Geometry.EnvelopeClass(); 23 envelope.PutCoords(exportRECT.left, exportRECT.top, exportRECT.right, exportRECT.bottom); 24 export.PixelBounds = envelope; 25 System.Int32 hDC = export.StartExporting(); 26 activeView.Output(hDC, (System.Int16)export.Resolution, ref exportRECT, null, null); 27 28 // Finish writing the export file and cleanup any intermediate files 29 export.FinishExporting(); 30 export.Cleanup(); 31 32 return true; 33 }
源：http://help.arcgis.com/en/sdk/10.0/arcobjects_net/componenthelp/index.html#/Create_JPEG_from_ActiveView_Snippet/004900000064000000/
