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Get Annotations from PDF via .NET SDK
API for getting annotations from PDF documents with .NET.
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How to get annotations from PDF documents using Cloud .NET SDK
In order to work with annotations in PDF documents via Cloud .NET SDK , 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 get annotations By Id using .NET SDK
Aspose.PDF Cloud developers can easily load & append annotations to PDF documents in just a few lines of code.
- Uploads the PDF.
- Creates a styled text box (with fonts, colors, alignment).
- Submits the annotation to the specified page.
- Downloads the modified document for local use.
This sample code shows removing Annotations from PDF document via C#
public async static Task GetTextAnnotation()
{
const string localPdfDocument = @"C:\Samples\sample.pdf";
const string storageFileName = "sample.pdf";
const string annotationId = "GE5TAOZRGAYCYNBVGAWDINJQFQ2TAMA";
// 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]);
}
TextAnnotationResponse response = await pdfApi.GetTextAnnotationAsync(storageFileName, annotationId);
if (response == null)
Console.WriteLine("GetTextAnnotation(): Unexpected error!");
else if (response.Code < 200 || response.Code > 299)
Console.WriteLine("GetTextAnnotation(): Failed to get annotations from the document.");
else
{
Console.WriteLine(JsonConvert.SerializeObject(response.Annotation, Formatting.Indented));
}
}