How to validate a PowerPoint PPTX Presentation using C# in .NET Framework

PowerPoint file validation is very useful in a variety of mobile app and website applications; for example in filtering out junk files from user submissions to a website, or to prevent issues in a PowerPoint editing app when the wrong type of file is loaded. Programming this functionality from scratch is a headache, but today we are going to accomplish it in two quick steps using an API.

First let’s install Cloudmersive’s Document client using NuGet:

Install-Package Cloudmersive.APIClient.NET.DocumentAndDataConvert -Version 1.3.4

Next call ValidateDocumentPptxValidation with the file that needs to be validated.

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 ValidateDocumentPptxValidationExample
    {
        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 ValidateDocumentApi();
            var inputFile = new System.IO.Stream(); // System.IO.Stream | Input file to perform the operation on.
try
            {
                // Validate a PowerPoint presentation (PPTX)
                DocumentValidationResult result = apiInstance.ValidateDocumentPptxValidation(inputFile);
                Debug.WriteLine(result);
            }
            catch (Exception e)
            {
                Debug.Print("Exception when calling ValidateDocumentApi.ValidateDocumentPptxValidation: " + e.Message );
            }
        }
    }
}

That’s it! You’re done. Your output will look something like this:

{
  "DocumentIsValid": true,
  "ErrorCount": 0,
  "WarningCount": 0,
  "ErrorsAndWarnings": [
    {
      "Description": "string",
      "Path": "string",
      "Uri": "string",
      "IsError": true
    }
  ]
}

This API contains sister functions that cover DOCX and XLSX files should you need them. There are also functions that allow you to manipulate documents and websites in a variety of ways, as well as convert files between formats (for example between PPTX and PDF).\