ArcGIS Engine 导出图片格式（代码示例）

  

    private void MenuItemExportJPEG_Click(object sender, EventArgs e)
        {
            try
            {
                SaveFileDialog exportJPGDialog = new SaveFileDialog();
                exportJPGDialog.Title = "导出JPEG图像";
                exportJPGDialog.Filter = "Jpeg Files(*.jpg,*.jpeg)|*.jpg,*.jpeg";
                exportJPGDialog.RestoreDirectory = true;
                exportJPGDialog.ValidateNames = true;
                exportJPGDialog.OverwritePrompt = true;
                exportJPGDialog.DefaultExt = "jpg";

                if (exportJPGDialog.ShowDialog() == DialogResult.OK)
                {
                    double lScreenResolution;
                    lScreenResolution = axMapControl1.ActiveView.ScreenDisplay.DisplayTransformation.Resolution;

                    IExport pExporter = new ExportJPEGClass() as IExport;
                    //IExport pExporter = new ExportPDFClass() as IExport;//直接可以用！！
                    pExporter.ExportFileName = exportJPGDialog.FileName;
                    pExporter.Resolution = lScreenResolution;

                    tagRECT deviceRECT;
                    //用这句的话执行到底下的ｏｕｔｐｕｔ（）时就会出现错误：Not enough memory to create requested bitmap
                    //MainaxMapControl.ActiveView.ScreenDisplay.DisplayTransformation.set_DeviceFrame(ref deviceRECT);
                    deviceRECT = axMapControl1.ActiveView.ExportFrame;

                    IEnvelope pDriverBounds = new EnvelopeClass();
                    //pDriverBounds = MainaxMapControl.ActiveView.FullExtent;

                    pDriverBounds.PutCoords(deviceRECT.left, deviceRECT.bottom, deviceRECT.right, deviceRECT.top);

                    pExporter.PixelBounds = pDriverBounds;

                    ITrackCancel pCancel = new CancelTrackerClass();
                    axMapControl1.ActiveView.Output(pExporter.StartExporting(), (int)lScreenResolution, ref deviceRECT, axMapControl1.ActiveView.Extent, pCancel);
                    pExporter.FinishExporting();
                    pExporter.Cleanup();
                    MessageBox.Show("导出Jpeg图像成功！图像保存在" + exportJPGDialog.FileName, "保存成功", MessageBoxButtons.OK, MessageBoxIcon.Information);
                }
            }
            catch (Exception ex)
            { MessageBox.Show(ex.Message); return; }
        }