使用DocXToPdfConverter把Docx转成Pdf文件

1、安装DocXToPdfConverter

Install-Package DocXToPdfConverter

2、下载LibreOffice

https://www.libreoffice.org/download/portable-versions/

下载后安装软件。

3、编写代码进行转换

var fileDialog = new OpenFileDialog();
fileDialog.Filter = "所有文件(*.*)|*.*";
if (fileDialog.ShowDialog() == true)
{
    var fileName = fileDialog.FileName;

    // initialize LibreOffice soffice.exe filepath
    string locationOfLibreOfficeSoffice = @"D:\Program Files\LibreOfficePortable\App\libreoffice\program\soffice.exe";
    // define placeholders
    var placeholders = new Placeholders();
    placeholders.NewLineTag = "<br/>";
    placeholders.TextPlaceholderStartTag = "##";
    placeholders.TextPlaceholderEndTag = "##";
    placeholders.TablePlaceholderStartTag = "==";
    placeholders.TablePlaceholderEndTag = "==";
    placeholders.ImagePlaceholderStartTag = "++";
    placeholders.ImagePlaceholderEndTag = "++";
    // initialize report generator
    var test = new ReportGenerator(locationOfLibreOfficeSoffice);

    // convert DOCX to PDF
    test.Convert(fileName, fileName + ".pdf", placeholders);
    Process.Start("explorer.exe", "/select," + fileName + ".pdf");
}

其中locationOfLibreOfficeSoffice参数的路径换成你自己LibreOffice的安装路径。