.NET环境下c#实现图片PNG、JPG转ico,可用于程序logo图标

public static byte[] ConvertImageToIcon(this Image origin, int size)
{
     if (size > 255 || size > 255)
     {
         return null;
     }
     Size iconSize = new Size(size, size);
     using (Image image = new Bitmap(origin, iconSize))
     {
          using (MemoryStream bitMapStream = new MemoryStream())
          {
               using (MemoryStream iconStream = new MemoryStream())
               {
                   image.Save(bitMapStream, ImageFormat.Png); //将原图读取为png格式并存入原图内存流
                   using (Stream iconFileStream = new MemoryStream())
                   {
                       using (BinaryWriter iconWriter = new BinaryWriter(iconStream))
                       {
                           //vs识别读取不出来可能就是因为这里
                           iconWriter.Write((short)0);
                           iconWriter.Write((short)1);
                           iconWriter.Write((short)1);
                           iconWriter.Write((byte)image.Width);
                           iconWriter.Write((byte)image.Height);
                           iconWriter.Write((short)0);
                           iconWriter.Write((short)0);
                           iconWriter.Write((short)32);
                           iconWriter.Write((int)bitMapStream.Length);
                           iconWriter.Write(22);
                           //写入图像体至目标图标内存流
                           iconWriter.Write(bitMapStream.ToArray());
                           //保存流，并将流指针定位至头部以Icon对象进行读取输出为文件
                           iconWriter.Flush();
                           iconWriter.Seek(0, SeekOrigin.Begin);
                           Icon icon = new Icon(iconStream);
                           icon.Save(iconFileStream); //储存图像
                           iconFileStream.Seek(0, SeekOrigin.Begin);
                           /**下面开始释放资源**/
                           iconStream.Close();
                           bitMapStream.Close();
                           icon.Dispose();
                           image.Dispose();
                           return iconFileStream.ConvertToBytes();
                       }
                   }
               }
          }
     }
}