BitmapImage to byte[] - C# web
BitmapImage to byte[] - C# web
提问于 2017-08-24 09:22:42
我需要在一个BitmapImage中转换一个byte[]，但是我找不到如何在C# web中实现它。我找到了一些示例，但它们都不起作用(JpegBitmapEncoder不存在，BitmapImageObject.StreamSource不存在，没有以BitmapImage作为参数的WriteableBitmap构造函数，Extensions.SaveJpeg(参数)不存在.)。
我发现的例子：
构造函数新WriteableBitmap(bitmapImage)不存在。
public static byte[] ConvertToBytes(this BitmapImage bitmapImage)
{
byte[] data;
// Get an Image Stream
using (MemoryStream ms = new MemoryStream())
{
WriteableBitmap btmMap = new WriteableBitmap(bitmapImage);
// write an image into the stream
Extensions.SaveJpeg(btmMap, ms,
bitmapImage.PixelWidth, bitmapImage.PixelHeight, 0, 100);
// reset the stream pointer to the beginning
ms.Seek(0, 0);
//read the stream into a byte array
data = new byte[ms.Length];
ms.Read(data, 0, data.Length);
}
//data now holds the bytes of the image
return data;
}新的System.Windows.Media.Imaging.Extensions.SaveJpeg (WriteableBitmap)并不存在。
public static byte[] ImageToBytes(BitmapImage img)
{
using (MemoryStream ms = new MemoryStream())
{
WriteableBitmap btmMap = new WriteableBitmap(img);
System.Windows.Media.Imaging.Extensions.SaveJpeg(btmMap, ms, img.PixelWidth, img.PixelHeight, 0, 100);
img = null;
return ms.ToArray();
}
}imageSource.StreamSource不存在。
public static byte[] ImageToByte(BitmapImage imageSource)
{
Stream stream = imageSource.StreamSource;
Byte[] buffer = null;
if (stream != null && stream.Length > 0)
{
using (BinaryReader br = new BinaryReader(stream))
{
buffer = br.ReadBytes((Int32)stream.Length);
}
}
return buffer;
}JpegBitmapEncoder不存在。
byte[] data;
JpegBitmapEncoder encoder = new JpegBitmapEncoder();
encoder.Frames.Add(BitmapFrame.Create(bitmapImage));
using(MemoryStream ms = new MemoryStream())
{
encoder.Save(ms);
data = ms.ToArray();
}Stack Overflow用户
发布于 2017-08-24 09:30:23
byte[] foo = System.IO.File.ReadAllBytes("bitmap path");或
byte[] foo;
Object obj = YourBitmap;
BinaryFormatter bf = new BinaryFormatter();
using (var ms = new MemoryStream())
{
bf.Serialize(ms, obj);
foo = ms.ToArray();
}或
ImageConverter foocon = new ImageConverter();
byte[] foo = (byte[])foocon.ConvertTo(YourBitmap, typeof(byte[]));或
MemoryStream ms = new MemoryStream();
Bitmap.Save(ms, YourBitmap.RawFormat);
byte[] foo = ms.ToArray();页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/45857745
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