Load document from stream

There might be the case when source or target document is not physically located on the disk. Instead, you have the document in the form of a stream. In this case, to avoid the overhead of saving stream as a file on disk, GroupDocs.Annotation provides a way to work with document streams directly. 

The following are the steps to be followed:

  • Obtain document stream; 
  • Pass opened source document stream to Annotator class constructor.

Following code snippet describes this case.

using (documentStream = File.OpenRead("input.pdf"))
using (Annotator annotator = new Annotator(documentStream))
     	AreaAnnotation area = new AreaAnnotation()
       	Box = new Rectangle(100, 100, 100, 100),
       	BackgroundColor = 65535,
       annotator.Save("result.pdf", new SaveOptions());

More resources

GitHub Examples

You may easily run the code above and see the feature in action in our GitHub examples:

Free Online App

Along with full-featured .NET library we provide simple but powerful free Apps. You are welcome to annotate your PDF, DOC or DOCX, XLS or XLSX, PPT or PPTX, PNG and other documents with free to use online GroupDocs Annotation App.