BitmapSource to byte[] 互转
2018-12-03 本文已影响0人
残月星辰梦
private static BitmapImage ConvertToBitmap(byte[] bytes)
{
var bitmapImage = new BitmapImage();
bitmapImage.BeginInit();
bitmapImage.StreamSource = new MemoryStream(bytes);
bitmapImage.EndInit();
return bitmapImage;
}
private byte[] ConvertToBytes(BitmapSource bitmapSource)
{
byte[] buffer = null;
JpegBitmapEncoder encoder = new JpegBitmapEncoder();
MemoryStream memoryStream = new MemoryStream();
encoder.Frames.Add(BitmapFrame.Create(bitmapSource));
encoder.Save(memoryStream);
memoryStream.Position = 0;
if (memoryStream.Length > 0)
{
using (BinaryReader br = new BinaryReader(memoryStream))
{
buffer = br.ReadBytes((int)memoryStream.Length);
}
}
memoryStream.Close();
return buffer;
}
private static BitmapImage ConvertToBitmap(BitmapSource bitmapSource)
{
JpegBitmapEncoder encoder = new JpegBitmapEncoder();
MemoryStream memoryStream = new MemoryStream();
BitmapImage bImg = new BitmapImage();
encoder.Frames.Add(BitmapFrame.Create(bitmapSource));
encoder.Save(memoryStream);
memoryStream.Position = 0;
bImg.BeginInit();
bImg.StreamSource = memoryStream;
bImg.EndInit();
memoryStream.Close();
return bImg;
}
public static byte[] BitmapImageToBytes(BitmapImage bmp)
{
byte[] buffer = null;
try
{
Stream stream = bmp.StreamSource;
if (stream != null && stream.Length > 0)
{
//很重要,因为Position经常位于Stream的末尾,导致下面读取到的长度为0。
stream.Position = 0;
using (BinaryReader br = new BinaryReader(stream))
{
buffer = br.ReadBytes((int)stream.Length);
}
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
return buffer;
}