918博天堂

?#pragma checksum "D:\wwwroot\zgyzd233com\wwwroot\App_Code\ImgHelper.cs" "{406ea660-64cf-4c82-b6f0-42d48172a799}" "64C2884309DD88998D30051D956A2714"

#line 1 "D:\wwwroot\zgyzd233com\wwwroot\App_Code\ImgHelper.cs"
using System;
using System.Web;
using System.Web.UI.WebControls;
public class ImgHelper
{
    public static string UpOriginalAndThumbnail_img(FileUpload uploadImage, double intimgWidth, double intimgHeight, string folderurl, string s_folderurl)
    {
        string imgname = DateTime.Now.ToString("yyyy-MM-dd-hh-mm-ss-fff");
        HttpPostedFile hpf = uploadImage.PostedFile;
        //获得文件名
        string Filename = hpf.FileName;
        if (hpf.FileName.Length < 1)
        {
            return ("*请选择你要上传的图片文件");
        }
        if (hpf.ContentType != "image/pjpeg" && hpf.ContentType != "image/gif")
        {
            return ("*只允许上传JPEG GIF文件");
        }
        else
        {
            System.Text.StringBuilder sb = new System.Text.StringBuilder();
            sb.Append(imgname);
            if (Filename.ToLower().EndsWith("gif"))
                sb.Append(".gif");
            else if (Filename.ToLower().EndsWith("jpg"))
                sb.Append(".jpg");
            else if (Filename.ToLower().EndsWith("jpeg"))
                sb.Append(".jpeg");
            Filename = sb.ToString();
            //保留图片到服务器上
            try
            {
                hpf.SaveAs(folderurl + Filename);
            }
            catch (Exception ee)
            {
                return ("*上传图片失败，原因：" + ee.Message);
            }

            //天生缩略图
            //从文件获取图片对象
            System.Drawing.Image image = System.Drawing.Image.FromStream(hpf.InputStream,true);

            Double Width = intimgWidth;
            Double Height = intimgHeight;
            System.Double newWidth, newHeight;
            if (image.Width > image.Height)
            {
                newWidth = Width;
                newHeight = image.Height * (newWidth / image.Width);
            }
            else
            {
                newHeight = Height;
                newWidth = image.Width * (newHeight / image.Height);
            }
            if (newWidth > Width)
                newWidth = Width;
            if (newHeight > Height)
                newHeight = Height;
            System.Drawing.Size size = new System.Drawing.Size((int)newWidth, (int)newHeight); //设置图片的宽度和高度
            System.Drawing.Image bitmap = new System.Drawing.Bitmap(size.Width, size.Height);  //新建bmp图片
            System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(bitmap);  //新建画板
            g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;  //造订高质量插值法
            g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;   //设置高质量、低快率出现滑润水平
            g.Clear(System.Drawing.Color.White);    //清空画布
            //在造订地位画图
            g.DrawImage(image, new System.Drawing.Rectangle(0, 0, bitmap.Width, bitmap.Height), new System.Drawing.Rectangle(0, 0, image.Width, image.Height), System.Drawing.GraphicsUnit.Pixel);

            try
            {
                bitmap.Save(s_folderurl + Filename, System.Drawing.Imaging.ImageFormat.Jpeg);
            }
            catch (Exception ex)
            {
                return ("*保留缩略图失败" + ex.Message);
            }
            //开释资源
            g.Dispose();
            bitmap.Dispose();
            image.Dispose();
            return Filename;
        }
    }
    public static void UpOriginalAndThumbnail_img(string originalImagePath, string thumbnailPath, double intimgWidth, double intimgHeight)
    {
        System.Drawing.Image image = System.Drawing.Image.FromFile(originalImagePath,true);

        Double Width = intimgWidth;
        Double Height = intimgHeight;
        System.Double newWidth, newHeight;
        if (image.Height > Height || image.Width > Width)
        {
            if (image.Width > image.Height)
            {
                newWidth = Width;
                newHeight = image.Height * (newWidth / image.Width);
            }
            else
            {
                newHeight = Height;
                newWidth = image.Width * (newHeight / image.Height);
            }
            if (newWidth > Width)
                newWidth = Width;
            if (newHeight > Height)
                newHeight = Height;
        }
        else
        {
            newWidth = image.Width;
            newHeight = image.Height;
        }
        System.Drawing.Size size = new System.Drawing.Size((int)newWidth, (int)newHeight); //设置图片的宽度和高度
        System.Drawing.Image bitmap = new System.Drawing.Bitmap(size.Width, size.Height);  //新建bmp图片
        System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(bitmap);  //新建画板
        g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;  //造订高质量插值法
        g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;   //设置高质量、低快率出现滑润水平
        g.Clear(System.Drawing.Color.Transparent);    //清空画布
        //在造订地位画图
        g.DrawImage(image, new System.Drawing.Rectangle(0, 0, bitmap.Width, bitmap.Height), new System.Drawing.Rectangle(0, 0, image.Width, image.Height), System.Drawing.GraphicsUnit.Pixel);

        try
        {
            bitmap.Save(thumbnailPath, System.Drawing.Imaging.ImageFormat.Jpeg);
        }
        catch (Exception ex)
        {
            throw ex;
        }
        finally
        {
            //开释资源
            g.Dispose();
            bitmap.Dispose();
            image.Dispose();
        }
    }
}


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