转换后如何将图像保存到文件夹？ [英] How do I save an image to a folder after converting it?

问题描述

我正在尝试将图像保存到内存并转换后保存到文件夹中。我无法找到如何完成这件事。



我尝试了什么：



私有静态图像ScaleImage（图像，int maxHeight）

{

双刻度;

if（image.Height > = maxHeight）{scale = maxHeight /（double）image.Height; }

else {scale = 1; }



位图bmp =新位图（图像，Convert.ToInt32（image.Width * scale），Convert.ToInt32（image.Height * scale））;



ImageCodecInfo jpgEncoder = GetEncoder（ImageFormat.Jpeg）;

EncoderParameters jpgEncoderParameters = new EncoderParameters（1）;

jpgEncoderParameters .Param [0] = new EncoderParameter（System.Drawing.Imaging.Encoder.Quality，100L）;



MemoryStream ms = new MemoryStream（）;



bmp.Save（ms，jpgEncoder，jpgEncoderParameters）;







返回Image.FromStream（ms）;

}



私有静态ImageCodecInfo GetEncoder（ImageFormat格式）

{

ImageCodecInfo [] codecs = ImageCodecInfo.GetImageDecoders（）;



foreach（编码解码器中的ImageCodecInfo编解码器） ）

{

if（codec.FormatID == format.Guid）{return codec; }

}

返回null;

}

#endregion

private static void Job_UpdateStaffDBPics（string loc）

{

DirectoryInfo diSource = new DirectoryInfo（loc）;





byte [] Pic = null;

byte [] StaffPicThumb = null;



foreach（文件信息在diSource中） .GetFiles（））

{

试试

{

FileStream fs = fi.OpenRead（）;

Image imgSource = Image.FromStream（fs）;

ImageConverter converter = new ImageConverter（）;

Pic =（byte []）converter。 ConvertTo（ScaleImage（imgSource，600），typeof（byte []））;

StaffPicThumb =（byte []）converter.ConvertTo（ScaleImage（imgSource，128）， typeof（byte []））;



MemoryStream ms = new MemoryStream（StaffPicThumb）;

Image returnImage = Image.FromStream（ms） ;



returnImage.Save（ConvertedImage，ImageFormat.Jpeg）;



//文件。复制（returnImage）



foreach（图片中的var项目）

{



}



MessageBox.Show（测试）;

}

catch（Exception ex） {MessageBox.Show（ex.Message）; }

}

}

}

I'm trying to save an image to a folder after having it in memory and converted. I can't find out how to get that done.

What I have tried:

private static Image ScaleImage(Image image, int maxHeight)
{
double scale;
if (image.Height >= maxHeight) { scale = maxHeight / (double)image.Height; }
else { scale = 1; }

Bitmap bmp = new Bitmap(image, Convert.ToInt32(image.Width * scale), Convert.ToInt32(image.Height * scale));

ImageCodecInfo jpgEncoder = GetEncoder(ImageFormat.Jpeg);
EncoderParameters jpgEncoderParameters = new EncoderParameters(1);
jpgEncoderParameters.Param[0] = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, 100L);

MemoryStream ms = new MemoryStream();

bmp.Save(ms, jpgEncoder, jpgEncoderParameters);



return Image.FromStream(ms);
}

private static ImageCodecInfo GetEncoder(ImageFormat format)
{
ImageCodecInfo[] codecs = ImageCodecInfo.GetImageDecoders();

foreach (ImageCodecInfo codec in codecs)
{
if (codec.FormatID == format.Guid) { return codec; }
}
return null;
}
#endregion
private static void Job_UpdateStaffDBPics(string loc)
{
DirectoryInfo diSource = new DirectoryInfo(loc);


byte[] Pic = null;
byte[] StaffPicThumb = null;

foreach (FileInfo fi in diSource.GetFiles())
{
try
{
FileStream fs = fi.OpenRead();
Image imgSource = Image.FromStream(fs);
ImageConverter converter = new ImageConverter();
Pic = (byte[])converter.ConvertTo(ScaleImage(imgSource, 600), typeof(byte[]));
StaffPicThumb = (byte[])converter.ConvertTo(ScaleImage(imgSource, 128), typeof(byte[]));

MemoryStream ms = new MemoryStream(StaffPicThumb);
Image returnImage = Image.FromStream(ms);

returnImage.Save("ConvertedImage", ImageFormat.Jpeg);

//File.Copy(returnImage)

foreach (var item in Pic)
{

}

MessageBox.Show("Test");
}
catch (Exception ex) { MessageBox.Show(ex.Message); }
}
}
}

推荐答案

你可以这样做：< br $> b $ b

You could do:

returnImage.Save("C:\image.ext", ImageFormat.Jpeg);

或绕过此位并将流直接写入文件

or bypass this bit and write the stream straight to a file

using (var fileStream = File.Create("C:\image.ext"))
{
    ms.InputStream.Seek(0, SeekOrigin.Begin);
    ms.InputStream.CopyTo(fileStream);
}

这篇关于转换后如何将图像保存到文件夹？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！