using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
using System.IO;
using System.Drawing.Imaging;
using System.Drawing.Drawing2D;



public class ImageResize
{
    public System.Drawing.Image ScaleByPercent(System.Drawing.Image imgPhoto, float Percent, int targetCanvasWidth, int targetCanvasHeight)
    {
        float nPercent = (((float)(Percent)) / 100);
        int sourceWidth = imgPhoto.Width;
        int sourceHeight = imgPhoto.Height;
        int sourceX = 0;
        int sourceY = 0;
        int destWidth = ((int)((sourceWidth * nPercent)));
        int destHeight = ((int)((sourceHeight * nPercent)));
        int destX = (targetCanvasWidth - destWidth) / 2;
        int destY = (targetCanvasHeight - destHeight) / 2;
        Bitmap bmPhoto = new Bitmap(targetCanvasWidth, targetCanvasHeight, PixelFormat.Format24bppRgb);
        bmPhoto.SetResolution(imgPhoto.HorizontalResolution, imgPhoto.VerticalResolution);
        Graphics grPhoto = Graphics.FromImage(bmPhoto);
        grPhoto.InterpolationMode = InterpolationMode.HighQualityBicubic;
        grPhoto.Clear(System.Drawing.Color.FromArgb(34, 54, 70));
        grPhoto.DrawImage(imgPhoto, new Rectangle(destX, destY, destWidth, destHeight), new Rectangle(sourceX, sourceY, sourceWidth, sourceHeight), GraphicsUnit.Pixel);
        grPhoto.Dispose();
        return bmPhoto;
    }
    public System.Drawing.Image CreateThumbNail(Bitmap postedFile, int width, int height)
    {
        
        System.Drawing.Image imgBanner;
        ImageFormat Format = postedFile.RawFormat;
        Decimal Ratio;
        int NewWidth;
        int NewHeight;
        // *** If the image is smaller than a thumbnail just return it
       
        if ((postedFile.Width > postedFile.Height))
        {
            Ratio = Convert.ToDecimal((Convert.ToDecimal(width) / postedFile.Width));
            NewWidth = width;
            Decimal Temp = (postedFile.Height * Ratio);
            NewHeight = Convert.ToInt32(Temp);
        }
        else
        {
            Ratio = Convert.ToDecimal((Convert.ToDecimal(height) / postedFile.Height));
            NewHeight = height;
            Decimal Temp = (postedFile.Width * Ratio);
            NewWidth = Convert.ToInt32(Temp);
        }
        float per = (float)(Ratio * 100);
      
        imgBanner = NewScaleByPercent(postedFile, per, width, height);
        return imgBanner;
    }
public static System.Drawing.Image NewScaleByPercent(System.Drawing.Image imgPhoto, float Percent, int targetCanvasWidth, int targetCanvasHeight)
        {
            float nPercent = ((float)Percent / 100);

            int sourceWidth = imgPhoto.Width;
            int sourceHeight = imgPhoto.Height;
            int sourceX = 0;
            int sourceY = 0;

            int destWidth = (int)(sourceWidth * nPercent);
            int destHeight = (int)(sourceHeight * nPercent);
            int destX = (targetCanvasWidth - destWidth) / 2;
            int destY = (targetCanvasHeight - destHeight) / 2;

            Bitmap bmPhoto = new Bitmap(targetCanvasWidth, targetCanvasHeight, PixelFormat.Format24bppRgb);
            bmPhoto.SetResolution(imgPhoto.HorizontalResolution, imgPhoto.VerticalResolution);

            Graphics grPhoto = Graphics.FromImage(bmPhoto);
            grPhoto.InterpolationMode = InterpolationMode.HighQualityBicubic;
            grPhoto.Clear(Color.White);

            grPhoto.DrawImage(imgPhoto,
                new Rectangle(destX, destY, destWidth, destHeight),
                new Rectangle(sourceX, sourceY, sourceWidth, sourceHeight),
                GraphicsUnit.Pixel);

            grPhoto.Dispose();
            return bmPhoto;
        }
}