.net core 调用打印机打印pdf文件 FreeSpire.PDF

首先，参考了https://stackoverflow.com/questions/63941980/is-it-possible-to-print-documents-from-a-net-core-3-1-windows-service中的说明，

声明：我用的是core 3.1测试的

先下载了FreeSpire.PDF的NuGet包，可以看出来简介上是支持print的：

 然后我的测试直接在controller中：

[HttpPost("[action]")]
        public async Task<IActionResult> PrintPDF()
        {
            bool printedOK = true;
            string printErrorMessage = "";
            try
            {
                PdfDocument pdf = new PdfDocument("E:/Project/Testzq.pdf");//pdf file complete path
                pdf.PrintSettings.PrinterName = "NPIAA6432 (HP LaserJet MFP M132snw)";//printer complete name
                pdf.PrintSettings.DocumentName = "testDocumentName";//display name
                pdf.PrintSettings.PaperSize = new System.Drawing.Printing.PaperSize("A4", 8, 11);//The size of the paper, in hundredths of an inch.
                pdf.PrintSettings.SetPaperMargins(2, 2, 2, 2);
                pdf.PrintSettings.SelectSinglePageLayout(Spire.Pdf.Print.PdfSinglePageScalingMode.FitSize, true);
                //_logger.LogDebug($"Paper Size - Width:{pdf.PrintSettings.PaperSize.Width} Height:{pdf.PrintSettings.PaperSize.Height} Name:{pdf.PrintSettings.PaperSize.PaperName} Kind:{pdf.PrintSettings.PaperSize.Kind} RawKind:{pdf.PrintSettings.PaperSize.RawKind}");
                pdf.Print();//execute print 
            }
            catch (Exception ex)
            {
                printErrorMessage = "Printing Error: " + ex.ToString();
                printedOK = false;
            }

            return null;
        }

 

测试成功！！！！！！！