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In the solution, two methods are mainly called to perform the task of adding attachments. The first method is byte[] ReadAllBytes(string path) which is applied to load the certain file that you want to attach in PDF. The other method isPdfAttachmentAnnotation(RectangleF rectangle, string fileName, byte[] data) that is used to add PDF attachment with attachment annotation.
This article will describe solutions of adding attachments, deleting and extract attachments in PDF mainly in C#, VB.NET. Both the adding and deleting attachment solutions can be realized by a .NET PDF component. Without any external library, this PDF library can edit, read, write and manipulate PDF files. Now first let us see how to add and delete attachment in PDF without Adobe Acrobat.
