C#: 根据指定压缩比率压缩图片

直接上代码：
    /// <summary>

    /// 根据指定压缩比率压缩图片

    /// </summary>

    /// <param name="original"></param>

    /// <param name="imagePath"></param>

    /// <param name="quality"></param>

    public static void CompressToQuality(Image original, String imagePath, int quality)

    {

        ImageCodecInfo jpgEncoder = null;

        ImageCodecInfo[] codecs = ImageCodecInfo.GetImageEncoders();

        foreach (ImageCodecInfo codec in codecs)

        {

            if (codec.FormatID == ImageFormat.Jpeg.Guid)

            {

                jpgEncoder = codec;

                break;

            }

        }

        if (jpgEncoder != null)

        {

            System.Drawing.Imaging.Encoder encoder = System.Drawing.Imaging.Encoder.Quality;

            EncoderParameters encoderParameters = new EncoderParameters(1);

            EncoderParameter encoderParameter = new EncoderParameter(encoder, quality);

            encoderParameters.Param[0] = encoderParameter;

            FileStream ms = new FileStream(imagePath, FileMode.Create, FileAccess.Write);

            original.Save(ms, jpgEncoder, encoderParameters);

            ms.Flush();

            ms.Close();

        }

    }
巴特西

C#: 根据指定压缩比率压缩图片

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