/// <summary>
/// 地图输出栅格图片的简单方法，返回输出的文件名by yl landgis@126.com
/// </summary>
/// <param name="pActiveView"></param>
/// <returns></returns>
public static string ExportImage(IActiveView pActiveView)
{
SaveFileDialog pSaveFileDialog = new SaveFileDialog();
pSaveFileDialog.Filter = "JPEG(*.jpg)|*.jpg|AI(*.ai)|*.ai|BMP(*.BMP)|*.bmp|EMF(*.emf)|*.emf|GIF(*.gif)|*.gif|PDF(*.pdf)|*.pdf|PNG(*.png)|*.png|EPS(*.eps)|*.eps|SVG(*.svg)|*.svg|TIFF(*.tif)|*.tif";
pSaveFileDialog.Title = "输出地图";
pSaveFileDialog.RestoreDirectory = true;
pSaveFileDialog.FilterIndex = 1;
if (pSaveFileDialog.ShowDialog() != System.Windows.Forms.DialogResult.OK)
{
return null;
}
string FileName = pSaveFileDialog.FileName;
IExport pExporter = null;
switch (pSaveFileDialog.FilterIndex)
{
case 1:
pExporter = new ExportJPEGClass();
break;
case 2:
pExporter = new ExportBMPClass();
break;
case 3:
pExporter = new ExportEMFClass();
break;
case 4:
pExporter = new ExportGIFClass();
break;
case 5:
pExporter = new ExportAIClass();
break;
case 6:
pExporter = new ExportPDFClass();
break;
case 7:
pExporter = new ExportPNGClass();
break;
case 8:
pExporter = new ExportPSClass();
break;
case 9:
pExporter = new ExportSVGClass();
break;
case 10:
pExporter = new ExportTIFFClass();
break;
default:
MessageBox.Show("输出格式错误");
return null;
}
IEnvelope pEnvelope = new EnvelopeClass();
ITrackCancel pTrackCancel = new CancelTrackerClass();
tagRECT ptagRECT;
ptagRECT.left = 0;
ptagRECT.top = 0;
ptagRECT.right = (int)pActiveView.Extent.Width;
ptagRECT.bottom = (int)pActiveView.Extent.Height;
int pResolution = (int)(pActiveView.ScreenDisplay.DisplayTransformation.Resolution);
pEnvelope.PutCoords(ptagRECT.left, ptagRECT.bottom, ptagRECT.right, ptagRECT.top);
pExporter.Resolution = pResolution;
pExporter.ExportFileName = FileName;
pExporter.PixelBounds = pEnvelope;
pActiveView.Output(pExporter.StartExporting(), pResolution, ref ptagRECT, pActiveView.Extent, pTrackCancel);
pExporter.FinishExporting();
//释放资源
pSaveFileDialog.Dispose();
System.Runtime.InteropServices.Marshal.ReleaseComObject(pExporter);
return FileName;
}