请教下我这byte获取stream的数据是0获取到长度但里边内容没获取到这是为什么
JpegBitmapEncoder encoder = new JpegBitmapEncoder();
encoder.Frames.Add(BitmapFrame.Create(BitmapFrame.Create(image1.Source as BitmapSource))); string fileName = "t.jpg";
using (FileStream stream = new FileStream(fileName, FileMode.Create))
{
encoder.Save(stream);
byte[] abc = new byte[stream.Length];
stream.Read(abc, 0, Convert.ToInt32(abc.Length));
stream.Flush();
stream.Close();
st = Convert.ToBase64String(abc);
}
abc获取到stream的长度但内容全是0;
JpegBitmapEncoder encoder = new JpegBitmapEncoder();
encoder.Frames.Add(BitmapFrame.Create(BitmapFrame.Create(image1.Source as BitmapSource))); string fileName = "t.jpg";
using (FileStream stream = new FileStream(fileName, FileMode.Create))
{
encoder.Save(stream);
byte[] abc = new byte[stream.Length];
stream.Read(abc, 0, Convert.ToInt32(abc.Length));
stream.Flush();
stream.Close();
st = Convert.ToBase64String(abc);
}
abc获取到stream的长度但内容全是0;
{
byte[] abc = new byte[fs.Length];
BinaryReader br = new BinaryReader(fs);
abc = br.ReadBytes(Convert.ToInt32(fs.Length));
}
using(MemoryStream ms = new MemoryStream())
{
encoder.Save(ms);
ms.Position = 0; //<---
st = Convert.ToBase64String( ms.ToArray() );
}
stream.Seek(0, SeekOrigin.Begin);