C# 图片和字节数组byte[]互转

图像转字节数组时有时会遇到无法识别图片格式的情况，造成无法转换，此时强制传入图片格式参数进行强制转换即可。

/// <summary>
/// 将字节数组转为图片
/// </summary>
/// <param name=" b">字节数组</param>
/// <returns>返回图片</returns>
public static Image ByteToImage(byte[] b)
{
    try
    {
        MemoryStream ms = new MemoryStream(b);
        return Bitmap.FromStream(ms, true);
    }
    catch { return null; }
}
/// <summary>
/// 图像转字节数组
/// </summary>
/// <param name="image">图像</param>
/// <param name="f">特殊情况下无法识别图片格式，手动传入图片格式进行强制转换</param>
/// <returns></returns>
public static byte[] ImageToBytes(Image image, ImageFormat f = null)
{
    ImageFormat format = image.RawFormat;
    using (MemoryStream ms = new MemoryStream())
    {
        if (f == null)
        {
            if (format.Equals(ImageFormat.Jpeg))
            {
                image.Save(ms, ImageFormat.Jpeg);
            }
            else if (format.Equals(ImageFormat.Png))
            {
                image.Save(ms, ImageFormat.Png);
            }
            else if (format.Equals(ImageFormat.Bmp))
            {
                image.Save(ms, ImageFormat.Bmp);
            }
            else if (format.Equals(ImageFormat.Gif))
            {
                image.Save(ms, ImageFormat.Gif);
            }
            else if (format.Equals(ImageFormat.Icon))
            {
                image.Save(ms, ImageFormat.Icon);
            }
            else if (format.Equals(ImageFormat.Tiff))
            {
                image.Save(ms, ImageFormat.Tiff);
            }
        }
        else
        {
            image.Save(ms, f);
        }
        byte[] buffer = new byte[ms.Length];
        ms.Seek(0, SeekOrigin.Begin);
        ms.Read(buffer, 0, buffer.Length);
        return buffer;
    }
}