C#

private void resizeimage(Image my, Size sz1)
    {
        double ratio = 0d;
        double myThumbWidth = 0d;
        double myThumbHeight = 0d;
        int x = 0;
        int y = 0;
        Bitmap bp;
        if (f == false)
        {
            if ((my.Width / Convert.ToDouble(sz1.Width)) > (my.Height /
            Convert.ToDouble(sz1.Height)))
                ratio = Convert.ToDouble(my.Width) / Convert.ToDouble(sz1.Width);
            else
                ratio = Convert.ToDouble(my.Height) / Convert.ToDouble(sz1.Height);
        }
        else if (f == true)
        {
            if ((Convert.ToDouble(sz1.Width) / my.Width) > (Convert.ToDouble(sz1.Height)) / my.Height)
                ratio = Convert.ToDouble(my.Width) / Convert.ToDouble(sz1.Width);
            else
                ratio = Convert.ToDouble(my.Height) / Convert.ToDouble(sz1.Height);
        }
        myThumbHeight = Math.Ceiling(my.Height / ratio);
        myThumbWidth = Math.Ceiling(my.Width / ratio);
        Size thumbSize = new Size((int)myThumbWidth, (int)myThumbHeight);
        bp = new Bitmap(sz1.Width, sz1.Height);
        x = (sz1.Width - thumbSize.Width) / 2;
        y = (sz1.Height - thumbSize.Height);
        System.Drawing.Graphics g = Graphics.FromImage(bp);
        g.SmoothingMode = SmoothingMode.HighQuality;
        g.InterpolationMode = InterpolationMode.HighQualityBicubic;
        g.PixelOffsetMode = PixelOffsetMode.HighQuality;
        rect = new Rectangle(x, y, thumbSize.Width, thumbSize.Height);
        g.DrawImage(my, rect, 0, 0, my.Width, my.Height, GraphicsUnit.Pixel);
        pictureBox1.Image = bp;

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Drawing;
using System.Diagnostics;

public partial class ErrorTestLog : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void cmdCompute_Click(object sender, EventArgs e)
    {
        try
        {
            decimal a, b, result;
            a = Decimal.Parse(txtA.Text);
            b = Decimal.Parse(txtB.Text);
            result = a / b;
            lblResult.Text = result.ToString();
            lblResult.ForeColor = Color.Black;
        }
        catch (Exception err)
        {
            lblResult.Text = "<b>Message:</b> " + err.Message + "<br /><br />";
            lblResult.Text += "<b>Source:</b> " + err.Source + "<br /><br />";
            lblResult.Text += "<b>Stack Trace:</b> " + err.StackTrace;
            lblResult.ForeColor = Color.Red;

            // Write the information to the event log.
            EventLog log = new EventLog();
            log.Source = "DivisionPage";
            log.WriteEntry(err.Message, EventLogEntryType.Error);
        }


    }
}