1、#region C#图片处理功能 - BY DREAMDLM/* C#图片处理功能-DREAMDLM */#endregionusing System;using System.Collections.Generic;using System.Text;using System.Drawing;using System.Drawing.Imaging;using System.IO;using System.Windows.Forms;namespace EU.EUClassclass ImgGDIpublic ImgGDI()/构造函数/ / Bitmap 转换 byte数组/ / / pu
2、blic byte Bmptobyte(Bitmap bmp)MemoryStream ms = new MemoryStream();bmp.Save(ms, ImageFormat.Jpeg);ms.Flush();byte buffer = ms.GetBuffer();ms.Close();return buffer;/ / byte数组转换 Bitmap/ / / public Bitmap bytetobmp(byte buffer)MemoryStream ms = new MemoryStream();ms.Write(buffer, 0, buffer.Length);Bit
3、map bmp = new Bitmap(ms);ms.Close();return bmp;/ / 返回默认图片/ / public Bitmap getInstance()Bitmap bmp = DefaultPic();return bmp;/ / 选取本地图片/ / / public Bitmap LocalIMG(string IMG)FileStream fs = new FileStream(IMG, FileMode.Open);Bitmap bmp = new Bitmap(fs);fs.Close();return bmp;/ / 返回流状态图片/ / / public
4、Bitmap ImgFromBase64(string Img)Bitmap bmp;byte buffer = Convert.FromBase64String(Img);if (buffer.Length 0)MemoryStream ms = new MemoryStream();ms.Write(buffer, 0, buffer.Length);bmp = new Bitmap(ms);ms.Close();return bmp;elsebmp = DefaultPic() ;return bmp;/ / 默认图片/ / private Bitmap DefaultPic()File
5、Stream fs = new FileStream(Application.StartupPath + “Goodr.jpg“, FileMode.Open);Bitmap bmp = new Bitmap(fs);fs.Close();return bmp;/ / GDI 压缩图片/ / 传入参数 Bitmap/ public byte ImageGdi(Bitmap bmp)Bitmap xbmp = new Bitmap(bmp);MemoryStream ms = new MemoryStream();xbmp.Save(ms, ImageFormat.Jpeg);byte buff
6、er;ms.Flush();if (ms.Length 95000)/buffer = ms.GetBuffer();double new_width = 0;double new_height = 0;Image m_src_image = Image.FromStream(ms);if (m_src_image.Width = m_src_image.Height)new_width = 1024;new_height = new_width * m_src_image.Height / (double)m_src_image.Width;else if (m_src_image.Heig
7、ht = m_src_image.Width)new_height = 768;new_width = new_height * m_src_image.Width / (double)m_src_image.Height;Bitmap bbmp = new Bitmap(int)new_width, (int)new_height, m_src_image.PixelFormat);Graphics m_graphics = Graphics.FromImage(bbmp);m_graphics.SmoothingMode = System.Drawing.Drawing2D.Smoothi
8、ngMode.HighQuality;m_graphics.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;m_graphics.DrawImage(m_src_image, 0, 0, bbmp.Width, bbmp.Height);ms = new MemoryStream();bbmp.Save(ms, ImageFormat.Jpeg);buffer = ms.GetBuffer();ms.Close();return buffer;elsebuffer = ms.GetBuffer();ms.Close();return buffer;
