在NuGet添加下面幾個包：

前面5個是Crystal Reports在.Net環(huán)境下操作的程序包，第6個是生成PDF的包。??

1	CrystalDecisions.CrystalReports.Engine
2	CrystalDecisions.ReportSource
3	CrystalDecisions.Shared
4	CrystalReports.ReportAppServer.CommLayer
5	CrystalReports.ReportAppServer.CommonObjectModel
6	PDFsharp

代碼也很簡單，就是用ReportDocument打開Crystal Reports模板 → 然后連接數(shù)據(jù)庫把數(shù)據(jù)裝進(jìn)去 → 導(dǎo)出PDF。

具體代碼如下，每個步驟都有說明，相應(yīng)的參數(shù)改成你的就可以了。?

using CrystalDecisions.CrystalReports.Engine; using CrystalDecisions.Shared; using PdfSharp.Pdf; using PdfSharp.Pdf.IO; using PdfSharp.Pdf.Security; using System;namespace ConsoleApp1 {class Program{static void Main(string[] args){string path = @"C:\Template\Temp2021-5.rpt";using (ReportDocument reportDocument = new ReportDocument()){//根據(jù)路徑加載模板reportDocument.Load(path);//寫入Crystal Reports模板所需參數(shù)reportDocument.SetParameterValue("Id", 101);//創(chuàng)建數(shù)據(jù)庫連接對象ConnectionInfo connectInfo = new ConnectionInfo(){ServerName = "10.10.10.10",DatabaseName = "DBTest",UserID = "sa",Password = "abc123"};//登錄到數(shù)據(jù)庫reportDocument.SetDatabaseLogon(connectInfo.UserID, connectInfo.Password);foreach (Table tbl in reportDocument.Database.Tables){tbl.LogOnInfo.ConnectionInfo = connectInfo;tbl.ApplyLogOnInfo(tbl.LogOnInfo);}//導(dǎo)出數(shù)據(jù)System.IO.Stream stream = reportDocument.ExportToStream(ExportFormatType.PortableDocFormat);byte[] bytes = new byte[stream.Length];stream.Read(bytes, 0, bytes.Length);stream.Seek(0, System.IO.SeekOrigin.Begin);//把數(shù)據(jù)裝到PDFPdfDocument document = PdfReader.Open(stream);PdfSecuritySettings securitySettings = document.SecuritySettings;securitySettings.UserPassword = "user";securitySettings.OwnerPassword = "owner";securitySettings.PermitAccessibilityExtractContent = false;securitySettings.PermitAnnotations = false;securitySettings.PermitAssembleDocument = false;securitySettings.PermitExtractContent = false;securitySettings.PermitFormsFill = true;securitySettings.PermitFullQualityPrint = false;securitySettings.PermitModifyDocument = true;securitySettings.PermitPrint = false;//保存文件string savePath = @"C:\test file\" + DateTime.Now.ToString("yyyyMMddhhmmss") + ".pdf";document.Save(savePath);document.Close();}}} }

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有一點，如果你報錯了，說找不到某個版本的程序集，可能是你引用的跟實際的包的版本不一致，在引用里面刪掉，然后再添加你實際用的包就行了。

Could not load file or assembly 'CrystalDecisions.CrystalReports.Engine, Version=13.0.2000.0, Culture=neutral, PublicKeyToken=692fbea5521e1304' or one of its dependencies. The system cannot find the file specified.'

總結(jié)

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