GetPDFContentString

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String GetPDFContentString(String path)
{
	var sb = new StringBuilder();
	var reader = new PdfReader(path);
	{
		for (Int32 i = 1; i <= reader.NumberOfPages; i++)
		{
			PdfDictionary pdfDictionary = reader.GetPageN(i);
			PRIndirectReference objectRef;
			var PName = PdfName.CONTENTS;

			try
			{
				objectRef = pdfDictionary.Get(PName) as PRIndirectReference;
			}
			catch (Exception ex)
			{
				return ex.Message;
			}

			var stream = PdfReader.GetPdfObject(objectRef) as PRStream;
			byte[] SBytes = PdfReader.GetStreamBytes(stream);
			var token = new PRTokeniser(SBytes);
			while ((token.NextToken()))

				switch (token.TokenType)
				{
					case PRTokeniser.TK_STRING:
						sb.Append(token.StringValue);
						break;
					case PRTokeniser.TK_OTHER:
						switch (token.StringValue)
						{
							case "ET":
								sb.Append("\n");
								break;
						}
						break;
				}
			token = null;
			stream = null;
			objectRef = null;
		}
	}
	reader = null;

	return sb.ToString();
}