1 SaveFileDialog dialog = new SaveFileDialog(); 2 dialog.Title = "保存输出图片"; 3 dialog.Filter = "JPG文件(*.jpg)|*.jpg|BMP文件(*.bmp)|*.bmp||"; 4 if (dialog.ShowDialog() == DialogResult.OK) 5 { 6 tagRECT grect; 7 string str = System.IO.Path.GetExtension(dialog.FileName).ToLower(); 8 IExport export = null; 9 if (str == ".jpg") 10 { 11 export = new ExportJPEGClass(); 12 } 13 else 14 { 15 export = new ExportBMPClass(); 16 } 17 export.ExportFileName = dialog.FileName; 18 int num = 0x60; 19 int num2 = 300; 20 export.Resolution = num2; 21 grect.left = 0; 22 grect.top = 0; 23 tagRECT deviceFrame = this.m_pMapControl.ActiveView.ScreenDisplay.DisplayTransformation.get_DeviceFrame();//.DeviceFrame; 24 grect.right = (int) (((deviceFrame.right - deviceFrame.left) * num2) / ((double) num)); 25 grect.bottom = (int) (((deviceFrame.bottom - deviceFrame.top) * num2) / ((double) num)); 26 IEnvelope envelope = new EnvelopeClass(); 27 envelope.PutCoords((double) grect.left, (double) grect.top, (double) grect.right, (double) grect.bottom); 28 export.PixelBounds = envelope; 29 int hdc = export.StartExporting(); 30 double resolution = export.Resolution; 31 this.m_pMapControl.ActiveView.Output(hdc, (int) resolution, ref grect, null, null); 32 export.FinishExporting(); 33 export.Cleanup(); 34 }