How to Convert RTF to DOCX in C# .Net Framework

While RTF is a convenient enough format in many situations, it definitely has its share of flaws. I cannot count the number of times I have accidentally edited an RTF in the wrong program and ended up with a corrupted file. The level of formatting customization and flexibility is also lacking when compared with DOCX. With all that in mind, today’s lesson is going to cover a very simple method by which we can convert between these two formats, all set up in just a few minutes.

First we will need to install our API client, for which we can use the following command:

Install-Package Cloudmersive.APIClient.NET.DocumentAndDataConvert -Version 3.2.8

And now we call the RTF to DOCX conversion function from our library:

using System;
using System.Diagnostics;
using Cloudmersive.APIClient.NET.DocumentAndDataConvert.Api;
using Cloudmersive.APIClient.NET.DocumentAndDataConvert.Client;
using Cloudmersive.APIClient.NET.DocumentAndDataConvert.Model;
namespace Example
{
public class ConvertDocumentRtfToDocxExample
{
public void main()
{
// Configure API key authorization: Apikey
Configuration.Default.AddApiKey("Apikey", "YOUR_API_KEY");
// Uncomment below to setup prefix (e.g. Bearer) for API key, if needed
// Configuration.Default.AddApiKeyPrefix("Apikey", "Bearer");
var apiInstance = new ConvertDocumentApi();
var inputFile = new System.IO.Stream(); // System.IO.Stream | Input file to perform the operation on.
try
{
// Convert Rich Text Format RTF to DOCX Document
byte[] result = apiInstance.ConvertDocumentRtfToDocx(inputFile);
Debug.WriteLine(result);
}
catch (Exception e)
{
Debug.Print("Exception when calling ConvertDocumentApi.ConvertDocumentRtfToDocx: " + e.Message );
}
}
}
}

And you’re done! Easy.