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Delete text annotations from PDF documents via .NET SDK

API for removing text annotations from PDF documents with Aspose.PDF Cloud .NET SDK.

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Aspose.PDF Cloud SDK for .NET Aspose.PDF Cloud SDK for .NET

Overview

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How to delete text annotations from PDF documents using Cloud .NET SDK

For removing text annotations from PDF documents, we’ll use Aspose.PDF Cloud .NET SDK This Cloud SDK allows you to easily build cloud-based PDF creator, editor & converter apps in C#, ASP.NET, or other .NET languages for various cloud platforms. Open NuGet package manager, search for Aspose.PDF Cloud and install. You may also use the following command from the Package Manager Console.

Package Manager Console Command


    PM> Install-Package Aspose.Pdf-Cloud
     

Steps to remove annotations using .NET SDK

Aspose.PDF Cloud developers can easily load & delete annotations to PDF documents in just a few lines of code.

  1. Uploads the document to the cloud.
  2. Deletes a specific annotation using DeleteTextAnnotation().
  3. Handles the response to ensure success.
  4. Removes any related popup annotations.
  5. Downloads the updated document.
 

This sample code shows removing Text Annotations from PDF document via C#


    public async static Task DeleteTextAnnotation()
    {
        const string localPdfDocument = @"C:\Samples\sample.pdf";
        const string storageFileName = "sample.pdf";
        const string localFolder = @"C:\\Samples";
        const string resultFileName = "output_del_annotations.pdf";
        const string annotationId = "GE5TMOZRGAYCYMZVGAWDINJQFQ2DAMA";

        // Get your AppSid and AppSecret from https://dashboard.aspose.cloud (free registration required).            
        var pdfApi = new PdfApi(AppSecret, AppSid);

        var filesOnStorage = await pdfApi.GetFilesListAsync("");
        if (filesOnStorage.Value.All(f => f.Name != storageFileName))
        {
            using var file = File.OpenRead(localPdfDocument);
            var uploadResult = await pdfApi.UploadFileAsync(storageFileName, file);
            Console.WriteLine(uploadResult.Uploaded[0]);
        }

        AsposeResponse response = await pdfApi.DeleteAnnotationAsync(storageFileName, annotationId);
        if (response == null)
            Console.WriteLine("DeleteTextAnnotation(): Unexpected error!");
        else if (response.Code < 200 || response.Code > 299)
            Console.WriteLine("DeleteTextAnnotation(): Failed to delete annotation from the document.");
        else
        {
            using Stream downloadStream = await pdfApi.DownloadFileAsync(storageFileName);
            using FileStream localStream = File.Create(Path.Combine(localFolder, resultFileName));
            await downloadStream.CopyToAsync(localStream);
            Console.WriteLine("DeleteTextAnnotation(): annotation deleted from the document '{0}.", resultFileName);
        }
    }