How to Convert Doc To Docx in C# without any Dll ?

Question

Without any Dll

Amit Mohanty · Answer

You can use the Microsoft Word 14.0 Object Library . Then it's really easy to convert from doc to docx. public void ConvertDocToDocx( string docPath) { Application wordApp = new Application(); if ( string .IsNullOrEmpty(docPath)) { var sourceFile = new FileInfo(docPath); var document = wordApp.Documents.Open(sourceFile.FullName); string newFileName = sourceFile.FullName.Replace( ".doc" , ".docx" ); document.SaveAs2(newFileName, WdSaveFormat.wdFormatXMLDocument, CompatibilityMode: WdCompatibilityMode.wdWord2010); wordApp.ActiveDocument.Close(); wordApp.Quit(); File.Delete(docPath); } }

Marvin Reid · Answer

You can use the DocumentConverter class, by adding the Leadtools.Document.Sdk nuget package, to convert your doc files to docx. This will bypass your need to reference Dlls. You can use the following code to do this: using (DocumentConverter documentConverter = new DocumentConverter()) { var input = @ "C:\Input\word.doc" ); var output = @ "C:\Output\output.docx" ); var jobData = DocumentConverterJobs.CreateJobData(input, output, DocumentFormat.Docx); jobData.JobName = "conversion job" ; var documentWriter = new DocumentWriter(); documentConverter.SetDocumentWriterInstance(documentWriter); var renderingEngine = new AnnWinFormsRenderingEngine(); documentConverter.SetAnnRenderingEngineInstance(renderingEngine); var job = documentConverter.Jobs.CreateJob(jobData); documentConverter.Jobs.RunJob(job); } https://www.leadtools.com/help/sdk/tutorials/dotnet-core-convert-files-with-the-document-converter.html

Leon D · Answer

It would be hard to implement this task without a dll. You can install Free Spire.Doc via NuGet and use the following code to achieve this feature with ease. using Spire.Doc; namespace DoctoDocx { class Program { static void Main( string [] args) { Document doc = new Document(); doc.LoadFromFile(@ "Sample.doc" ); doc.SaveToFile(@ "ToDocx.docx" , FileFormat.Docx) } } }