/// <summary>
/// 按指定的压缩质量及格式保存图片（微软的Image.Save方法保存到图片压缩质量为75)
/// </summary>
/// <param name="sourceImage">要保存的图片的Image对象</param>
/// <param name="savePath">图片要保存的绝对路径</param>
/// <param name="imageQualityValue">图片要保存的压缩质量，该参数的值为1至100的整数，数值越大，保存质量越好</param>
/// <returns>保存成功，返回true；反之，返回false</returns>
public bool SaveImageForSpecifiedQuality(System.Drawing.Image sourceImage, string savePath, int imageQualityValue)
{
//以下代码为保存图片时，设置压缩质量
EncoderParameters encoderParameters = new EncoderParameters();
EncoderParameter encoderParameter = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, imageQualityValue);
encoderParameters.Param[0] = encoderParameter;
try
{
ImageCodecInfo[] ImageCodecInfoArray = ImageCodecInfo.GetImageEncoders();
ImageCodecInfo jpegImageCodecInfo = null;
for (int i = 0; i < ImageCodecInfoArray.Length; i++)
{
if (ImageCodecInfoArray[i].FormatDescription.Equals("JPEG"))
{
jpegImageCodecInfo = ImageCodecInfoArray[i];
break;
}
}
sourceImage.Save(savePath, jpegImageCodecInfo, encoderParameters);
return true;
}
catch
{
return false;
}
}
C#中按指定质量保存图片的实例代码 24位深度
原文：http://www.cnblogs.com/zhangruisoldier/p/4655164.html
