Question

我有代码在存储到数据库之前转换图像由于此图像是存储但其大小不变，因此我的数据库变得太大帮助减小其大小

请将我的代码放在我的第一条评论中

Answer 1

以下是调整图片大小的好方法：

    /// <summary> 
    /// Reduce image by reducing quality
    /// </summary> 
    /// <param name="path"> Initially img. </param> 
    /// <param name="quality"> An integer from 0 to 100, with 100 being the highest quality. </param> 
    public static Image ReduceImg(Image img, int quality)
    {
        if (quality < 0 || quality > 100)
            throw new ArgumentOutOfRangeException("Quality is between 0 and 100");

        // Encoder parameter for image quality 
        EncoderParameter qualityParam = new EncoderParameter(Encoder.Quality, quality);
        // JPEG image codec 
        ImageCodecInfo jpegCodec = GetEncoderInfo("image/jpeg");
        EncoderParameters encoderParams = new EncoderParameters(1);
        encoderParams.Param[0] = qualityParam;

        using (var stream = new MemoryStream())
        {
            img.Save(stream, jpegCodec, encoderParams);
            var b = new Bitmap(stream);
            return new Bitmap(b);
        }
    }

    /// <summary> 
    /// Returns the image codec with the given mime type 
    /// </summary> 
    private static ImageCodecInfo GetEncoderInfo(string mimeType)
    {
        // Get image codecs for all image formats 
        ImageCodecInfo[] codecs = ImageCodecInfo.GetImageEncoders();

        // Find the correct image codec 
        for (int i = 0; i < codecs.Length; i++)
            if (codecs[i].MimeType == mimeType)
                return codecs[i];

        return null;
    }

使用：

var yourNewImage = ReduceImg(yourImage, 50); // 50 for example. It's quality of new image

如何在c＃中存储到数据库之前减小图像大小

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