c# 讀取圖片文件

        /// <summary>
        /// 通過FileStream 來打開文件，這樣就可以實現不鎖定Image文件，到時可以讓多用戶同時訪問Image文件
        /// </summary>
        /// <param name="path"></param>
        /// <returns></returns>
        public static Bitmap ReadImageFile(string path)
        {
            FileStream fs = File.OpenRead(path); //OpenRead
            int filelength = 0;
            filelength = (int)fs.Length; //獲得文件長度 
            Byte[] image = new Byte[filelength]; //建立一個字節數組 
            fs.Read(image, 0, filelength); //按字節流讀取 
            System.Drawing.Image result = System.Drawing.Image.FromStream(fs);
            fs.Close();
            Bitmap bit = new Bitmap(result);
            return bit;
        }