#region 判断图片是否一致

       /// <summary>

       /// 判断图片是否一致

       /// </summary>

       /// <param name="img">图片一

       /// <param name="bmp">图片二

       /// <returns>是否一致</returns>

       public bool IsSameImg(Bitmap img, Bitmap bmp)

       {

           //大小一致

           if (img.Width == bmp.Width && img.Height == bmp.Height)

           {

               //将图片一锁定到内存

               BitmapData imgData_i = img.LockBits(new Rectangle(, , img.Width, img.Height), ImageLockMode.ReadOnly, PixelFormat.Format24bppRgb);

               IntPtr ipr_i = imgData_i.Scan0;

               int length_i = imgData_i.Width * imgData_i.Height * ;

               byte[] imgValue_i = new byte[length_i];

               Marshal.Copy(ipr_i, imgValue_i, , length_i);

               img.UnlockBits(imgData_i);

               //将图片二锁定到内存

               BitmapData imgData_b = img.LockBits(new Rectangle(, , img.Width, img.Height), ImageLockMode.ReadOnly, PixelFormat.Format24bppRgb);

               IntPtr ipr_b = imgData_b.Scan0;

               int length_b = imgData_b.Width * imgData_b.Height * ;

               byte[] imgValue_b = new byte[length_b];

               Marshal.Copy(ipr_b, imgValue_b, , length_b);

               img.UnlockBits(imgData_b);

               //长度不相同

               if (length_i != length_b)

               {

                   return false;

               }

               else

               {

                   //循环判断值

                   for (int i = ; i < length_i; i++)

                   {

                       //不一致

                       if (imgValue_i[i] != imgValue_b[i])

                       {

                           return false;

                       }

                   }

                   return true;

               }

           }

           else

           {

               return false;

           }

       }

       #endregion