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October 16, 2018 20:10
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using System.Drawing; | |
const int size = 150; | |
const int quality = 75; | |
using (var image = new Bitmap(System.Drawing.Image.FromFile(inputPath))) | |
{ | |
int width, height; | |
if (image.Width > image.Height) | |
{ | |
width = size; | |
height = Convert.ToInt32(image.Height * size / (double)image.Width); | |
} | |
else | |
{ | |
width = Convert.ToInt32(image.Width * size / (double)image.Height); | |
height = size; | |
} | |
var resized = new Bitmap(width, height); | |
using (var graphics = Graphics.FromImage(resized)) | |
{ | |
graphics.CompositingQuality = CompositingQuality.HighSpeed; | |
graphics.InterpolationMode = InterpolationMode.HighQualityBicubic; | |
graphics.CompositingMode = CompositingMode.SourceCopy; | |
graphics.DrawImage(image, 0, 0, width, height); | |
using (var output = File.Open( | |
OutputPath(path, outputDirectory, SystemDrawing), FileMode.Create)) | |
{ | |
var qualityParamId = Encoder.Quality; | |
var encoderParameters = new EncoderParameters(1); | |
encoderParameters.Param[0] = new EncoderParameter(qualityParamId, quality); | |
var codec = ImageCodecInfo.GetImageDecoders() | |
.FirstOrDefault(codec => codec.FormatID == ImageFormat.Jpeg.Guid); | |
resized.Save(output, codec, encoderParameters); | |
} | |
} | |
} |
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i found the solution, I added this:
newMs.Position = 0
before:
await _storageService.SaveStreamAsync(newMs, "test.jpg");