private bool NewExport(IActiveView activeView, string pathFileName, int pOutDPI)

{

if (activeView == null || !(pathFileName.EndsWith(.tif)))

{

return false;

}

IExport pExport = new ExportTIFFClass(); //創(chuàng)建輸出對象

pExport.ExportFileName = pathFileName; //定義輸出圖片位置

int screenResolution = 96; //屏幕分辨率

int outputResulotion = pOutDPI;

pExport.Resolution = outputResulotion; //定義輸出圖片分辨率

tagRECT exportRECT;

exportRECT.left = 0;

exportRECT.top = 0;

exportRECT.right = activeView.ExportFrame.right * (outputResulotion / screenResolution);

exportRECT.bottom = activeView.ExportFrame.bottom * (outputResulotion / screenResolution); //獲取當前要輸出的區(qū)域

// Set up the PixelBounds envelope to match the exportRECT

IEnvelope pExportEnv = new EnvelopeClass();

pExportEnv.PutCoords(exportRECT.left, exportRECT.top, exportRECT.right, exportRECT.bottom);

pExport.PixelBounds = pExportEnv; //設置輸出圖片大小

IExportTIFF exportTiff = pExport as IExportTIFF;

exportTiff.GeoTiff = true;

exportTiff.CompressionType = esriTIFFCompression.esriTIFFCompressionLZW;

IWorldFileSettings worldFileSet = pExport as IWorldFileSettings;

worldFileSet.MapExtent = activeView.Extent;

int hDC = pExport.StartExporting();

activeView.Output(hDC, Convert.ToInt32(outputResulotion), ref exportRECT, null, null); //輸出圖片

pExport.FinishExporting(); //結束輸出

pExport.Cleanup(); //清理臨時文件、釋放內(nèi)存

return true;

}

總結

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