C#

private void button1_Click(object sender, EventArgs e)
{
   PdfReader reader = new PdfReader(@"C:\Original.pdf");
   PdfReaderContentParser parser = new PdfReaderContentParser(reader);
   int numberOfPages = reader.NumberOfPages;

   for (int num = 1; num <= numberOfPages; num++)
   {
       TextWithFontExtractionStategy S = new TextWithFontExtractionStategy();
       string F = iTextSharp.text.pdf.parser.PdfTextExtractor.GetTextFromPage(reader, num, S);
   }
}
public class TextInfo
    {
        private double x;
        private double y;
        private double iwidth;
        private double iheight;
        private string strtext;
        public double left
        {
            get
            {
                return x;
            }
            set
            {
                x = value;
            }
        }
        public double top
        {
            get
            {
                return y;
            }
            set
            {
                y = value;
            }
        }
        public double width
        {
            get
            {
                return iwidth;
            }
            set
            {
                iwidth = value;
            }
        }
        public double height
        {
            get
            {
                return iheight;
            }
            set
            {
                iheight = value;
            }
        }
        public string Text
        {
            get
            {
                return strtext;
            }
            set
            {
                strtext = value;
            }
        }
        public StringBuilder strXML = new StringBuilder();
        public string getTextInfo()//out string xmlString)
        {
            string strTextInfo = "";

            strTextInfo = "top:" + y.ToString() + "left:" + x.ToString() + "width:" + iwidth.ToString() + "height:" + iheight.ToString() + "Text:" + strtext;

            string xmlString = "<text top=\""+y.ToString()+" left=\""+x.ToString()+" width=\""+iwidth.ToString()+" height=\""+iheight.ToString()+" font=\"0\">" + strtext +"</text>";

            return strTextInfo;
        }   
    }
public class TextWithFontExtractionStategy : iTextSharp.text.pdf.parser.ITextExtractionStrategy
    {  
        private List<TextInfo> lstTextInfo = new List<TextInfo>();
        private StringBuilder result = new StringBuilder(); 
        //Store last used properties   
        private enum TextRenderMode  
        {
            FillText = 0,  
            StrokeText = 1,
            FillThenStrokeText = 2,    
            Invisible = 3,  
            FillTextAndAddToPathForClipping = 4,  
            StrokeTextAndAddToPathForClipping = 5, 
            FillThenStrokeTextAndAddToPathForClipping = 6,
            AddTextToPaddForClipping = 7 
        } 

        public void RenderText(iTextSharp.text.pdf.parser.TextRenderInfo renderInfo)
        {
            TextInfo txtInfo = getTextInfo(renderInfo);
            Console.WriteLine(txtInfo.getTextInfo());
            lstTextInfo.Add(txtInfo);
        }

        private TextInfo getTextInfo(iTextSharp.text.pdf.parser.TextRenderInfo renderInfo)
        {
            TextInfo txtInfo = new TextInfo();
            Vector asStartpoint = renderInfo.GetAscentLine().GetStartPoint();
            Vector asEndpoint = renderInfo.GetAscentLine().GetEndPoint();
            Vector dsStartPoint = renderInfo.GetDescentLine().GetEndPoint();
            txtInfo.left = Math.Round(asStartpoint[0]);
            txtInfo.top = Math.Round(612-asStartpoint[1]);
            txtInfo.height = Math.Round(asStartpoint[1] - dsStartPoint[1]);
            txtInfo.width = Math.Round(asEndpoint[0] - asStartpoint[0]);
            txtInfo.Text = renderInfo.GetText();
            if (txtInfo.Text.Contains("closin")) { }
            return txtInfo;
        }
        
        public string GetResultantText()
        {
            return result.ToString(); 
        }
        
        public List<TextInfo> GetTextInfo()
        {
            return lstTextInfo;
        }
        //Not needed 
        public void BeginTextBlock() { }   
        public void EndTextBlock() { }
        public void RenderImage(ImageRenderInfo renderInfo) { }
    } 

// assume all three NumericUpDowns have "Minimum" and "Maximum"
// values set to: Decimal.MinValue, and Decimal.MaxValue
private Func<decimal, decimal, decimal> PE;

private decimal x, y;

private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
    x = numericUpDown1.Value;
    y = numericUpDown2.Value;

    switch (comboBox1.SelectedIndex)
    {
        case 0: // multiply
            PE = (d1, d2) => d1*d2;
            break;
        case 1: // divide
            // probably better to handle divisor == 0 here ?
            PE = (d1, d2) => d1/ d2;
            break;
        case 2: // power
            // need to handle case of raising to the 0th. power here ?
            // as is: zero to the zeroth. power will be returned as #1 !
            PE = (d1, d2) => (decimal) Math.Pow((double) d1, (double) d2);
            break;
        default:
            // throw error here during development
            break;
    }

    try { numericUpDown3.Value = PE(x, y); }
        // handle System.DivideByZero exception
        catch (DivideByZeroException dZero) { }
        // handle System.Overflow exception: Decimal.MinValue or Decimal MaxValue
        catch (OverflowException oFlow) {}
}