[收藏].Net 图象质量控制,关键代码.

 long level; //level指定质量，0到100，0 最差，100 最佳

ImageCodecInfo myImageCodecInfo;Encoder myEncoder;EncoderParameter myEncoderParameter;EncoderParameters myEncoderParameters;

myImageCodecInfo = GetEncoderInfo("image/jpeg");

myEncoder = Encoder.Quality;

myEncoderParameters = new EncoderParameters(1);         myEncoderParameter = new EncoderParameter(myEncoder, level);myEncoderParameters.Param[0] = myEncoderParameter;srcBitmap.Save(destStream, myImageCodecInfo, myEncoderParameters);