摇一摇优惠券开源码/51wsb_weijuan/app_code/imgphoto.cs

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using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Text.RegularExpressions;
using System.Collections.Generic;
using System.IO;
using System.Net;
using System.Drawing;
using System.Drawing.Imaging;

public class imgphoto
{
    /**/
    /// <summary>  
    /// 按比例缩小图片，自动计算高度  
    /// </summary>  
    /// <param name="strOldPic">源图文件名(包括路径)</param>  
    /// <param name="strNewPic">缩小后保存为文件名(包括路径)</param>  
    /// <param name="intWidth">缩小至宽度</param>  
    public void SmallPic(string PicPath, int intWidth)
    {

        System.Drawing.Bitmap objPic, objNewPic;
        try
        {
            objPic = new System.Drawing.Bitmap(PicPath);

            if (objPic.Width >= objPic.Height)
            {
                if (objPic.Width > intWidth)
                {
                    double tempbl = (double)objPic.Width / objPic.Height;
                    int intHeight = Convert.ToInt32(Convert.ToDouble(intWidth) / tempbl);
                    objNewPic = new System.Drawing.Bitmap(objPic, intWidth, intHeight);
                    objPic.Dispose();
                    SaveAsJPEG(objNewPic, PicPath, 90);  //90图片压缩品质
                    objNewPic.Dispose();
                }
                else
                {
                    objPic.Dispose();
                }
            }
            else
            {
                if (objPic.Height > intWidth)
                {
                    double tempbl = (double)objPic.Height / objPic.Width;
                    int intHeight = Convert.ToInt32(Convert.ToDouble(intWidth) / tempbl);
                    objNewPic = new System.Drawing.Bitmap(objPic, intHeight, intWidth);
                    objPic.Dispose();