CAD.NET 批量打印、导出DPF

网上好多使用C#开发CAD.Net打印功能的代码都有问题【特别是CSDN上面的

最后还是参考了官方文档才彻底搞明白

  public static void PrintModelExtents(string dwg文件地址, string s_打印机名称, string s_打印机纸张类型, PlotRotation v_旋转角度, int i_打印份数 = 1, bool b_打印PDF = false, string pdf保存文件夹 = "")
    {
        // 读取DWG文件
        Document acDoc = Application.DocumentManager.Add(dwg文件地址);

        Application.DocumentManager.CurrentDocument = acDoc;
        using (DocumentLock docLock = acDoc.LockDocument())
        {
            Database acExDb = acDoc.Database;
            // 因为我只打印模型,所以这里只写了Model
            string layoutName = "Model";
            //layoutName = "Layout1";
            // Create a transaction for the external drawing
            using Transaction acTransEx = acExDb.TransactionManager.StartTransaction();
            // Get the layouts dictionary
            DBDictionary layoutsEx = acTransEx.GetObject(acExDb.LayoutDictionaryId, OpenMode.ForRead) as DBDictionary;
            if (layoutsEx.Contains(layoutName) != true)
            {
                // Display a message if the layout could not be found in the specified drawing
                MessageBox.Show($"\nLayout '{layoutName}' could not be imported from '{dwg文件地址}'.");
                return;
            }

            // Get the layout and block objects from the external drawing
            Layout acLayout = layoutsEx.GetAt(layoutName).GetObject(OpenMode.ForRead) as Layout;
            LayoutManager.Current.SetCurrentLayoutId(acLayout.Id);

            // 这一句不写的话
            // 在CAD 2018与2020上批量打印的时候会出现打印不出来的情况(测试过)
            // 具体表现在下面判断 PlotFactory.ProcessPlotState 的时候永远不为 NotPlotting
            // 在CAD 2021上是可以正常使用的
            // 所以还是建议写上
            Application.SetSystemVariable("BACKGROUNDPLOT", 0);

            using PlotInfo acPlInfo = new();

            acPlInfo.Layout = acLayout.ObjectId;

            // Get a copy of the PlotSettings from the layout
            using PlotSettings acPlSet = new(acLayout.ModelType);
            acPlSet.CopyFrom(acLayout);

            // Update the PlotSettings object
            PlotSettingsValidator acPlSetVdr = PlotSettingsValidator.Current;

            // Set the plot type
            acPlSetVdr.SetPlotType(acPlSet, Autodesk.AutoCAD.DatabaseServices.PlotType.Extents);

            // Set the plot scale
            acPlSetVdr.SetUseStandardScale(acPlSet, true);
            acPlSetVdr.SetStdScaleType(acPlSet, StdScaleType.ScaleToFit);

            // Center the plot
            acPlSetVdr.SetPlotCentered(acPlSet, true);

            // 部分打印机竖纸打横图的时候需要旋转90°
            // 比如 Microsoft Print to PDF
            acPlSetVdr.SetPlotRotation(acPlSet, v_旋转角度);

            // Set the plot device to use            
            acPlSetVdr.SetPlotConfigurationName(acPlSet, s_打印机名称, s_打印机纸张类型);

            // Set the plot info as an override since it will
            // not be saved back to the layout
            acPlInfo.OverrideSettings = acPlSet;

            // Validate the plot info
            using PlotInfoValidator acPlInfoVdr = new() { MediaMatchingPolicy = MatchingPolicy.MatchEnabled };
            acPlInfoVdr.Validate(acPlInfo);
            //check:
            // Check to see if a plot is already in progress
            if (PlotFactory.ProcessPlotState != ProcessPlotState.NotPlotting)
            {
                MessageBox.Show("ProcessPlotState is not NotPlotting");
                return;
            }


            using PlotEngine acPlEng = PlotFactory.CreatePublishEngine();
            // Track the plot progress with a Progress dialog
            using PlotProgressDialog acPlProgDlg = new(false, 1, true);

            // Define the status messages to display 
            // when plotting starts
            // 这里的信息可以按需修改
            acPlProgDlg.set_PlotMsgString(PlotMessageIndex.DialogTitle, "打印中，请稍候……");
            acPlProgDlg.set_PlotMsgString(PlotMessageIndex.CancelJobButtonMessage, "Cancel Job");
            acPlProgDlg.set_PlotMsgString(PlotMessageIndex.CancelSheetButtonMessage, "Cancel Sheet");
            acPlProgDlg.set_PlotMsgString(PlotMessageIndex.SheetSetProgressCaption, "Sheet Set Progress");
            acPlProgDlg.set_PlotMsgString(PlotMessageIndex.SheetProgressCaption, "Sheet Progress");

            // Set the plot progress range
            acPlProgDlg.LowerPlotProgressRange = 0;
            acPlProgDlg.UpperPlotProgressRange = 100;
            acPlProgDlg.PlotProgressPos = 0;

            // Display the Progress dialog
            acPlProgDlg.OnBeginPlot();
            acPlProgDlg.IsVisible = true;

            // Start to plot the layout
            acPlEng.BeginPlot(acPlProgDlg, null);

            // 核心关键语句
            acPlEng.BeginDocument(acPlInfo, acDoc.Name, null, i_打印份数, b_打印PDF, b_打印PDF ? pdf保存文件夹 : "");

            // Display information about the current plot
            acPlProgDlg.set_PlotMsgString(PlotMessageIndex.Status, $"Plotting: {Path.GetFileNameWithoutExtension(dwg文件地址)}");

            // Set the sheet progress range
            acPlProgDlg.OnBeginSheet();
            acPlProgDlg.LowerSheetProgressRange = 0;
            acPlProgDlg.UpperSheetProgressRange = 100;
            acPlProgDlg.SheetProgressPos = 0;

            // Plot the first sheet/layout
            using PlotPageInfo acPlPageInfo = new();
            acPlEng.BeginPage(acPlPageInfo, acPlInfo, true, null);


            acPlEng.BeginGenerateGraphics(null);
            acPlEng.EndGenerateGraphics(null);

            // Finish plotting the sheet/layout
            acPlEng.EndPage(null);

            // Finish plotting the document
            acPlEng.EndDocument(null);

            // Finish the plot
            acPlEng.EndPlot(null);
        }
        acDoc.CloseAndDiscard();
    }

　　官方文档里的参考代码段