Nasosoft.Documents.Pdf offers the capability to extract text content from PDF documents. You can use PdfTextReader to read text content easily. For example:

[C#]

            using (PdfTextReader r = new PdfTextReader(FileName))
            {
                System.Console.WriteLine(r.ReadToEnd());
            }

[VB]

            Dim reader As PdfTextReader
            reader = New PdfTextReader(FileName)
            System.Console.WriteLine(reader.ReadToEnd())