把图片转成二进制证picturebox控件读取

类

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using System;
using System.IO;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
namespace WindowsFormsApplication2
{
  public  class Class1
    {

        #region 将文件转换成流
        //public byte[] SetImageToByteArray(string fileName, ref string fileSize)
        /// <summary>
        /// 将文件转换成流
        /// </summary>
        /// <param name="fileName">文件全路径</param>
        /// <returns></returns>
        public byte[] SetImageToByteArray(string fileName)
        {
            byte[] image = null;
            try
            {
                FileStream fs = new FileStream(fileName, FileMode.Open);
                FileInfo fileInfo = new FileInfo(fileName);
                //fileSize = Convert.ToDecimal(fileInfo.Length / 1024).ToString("f2") + " K";
                int streamLength = (int)fs.Length;
                image = new byte[streamLength];
                fs.Read(image, 0, streamLength);
                fs.Close();
                return image;
            }
            catch
            {
                return image;
            }
        }
        #endregion

        #region 将byte转换成MemoryStream类型
        /// <summary>
        /// 将byte转换成MemoryStream类型
        /// </summary>
        /// <param name="mybyte">byte[]变量</param>
        /// <returns></returns>
        public MemoryStream ByteToStream(byte[] mybyte)
        {
            MemoryStream mymemorystream = new MemoryStream(mybyte, 0, mybyte.Length);
            return mymemorystream;
        }
        #endregion

        #region 将byte转换成Image文件
        /// <summary>
        /// 将byte转换成Image文件
        /// </summary>
        /// <param name="mybyte">byte[]变量</param>
        /// <returns></returns>
        public Image SetByteToImage(byte[] mybyte)
        {
            Image image;
            MemoryStream mymemorystream = new MemoryStream(mybyte, 0, mybyte.Length);
            image = Image.FromStream(mymemorystream);
            return image;
        }
        #endregion

    }
}

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调用类名：

 

 this.pictureBox1.Image =Image.FromStream(cls.ByteToStream(cls.SetImageToByteArray("d://1.jpg")));