private void AsyncReadCallback(IAsyncResult asyncResult)
{
this.CurrentAsyncState = (AsyncState)asyncResult.AsyncState;
try
{
int readCn = this.CurrentAsyncState.FS.EndRead(asyncResult);
//判断是否读到内容
if (readCn > 0)
{
this.CurrentAsyncState.currentFrag.bytesLength = readCn;
var newbuffer = this.CurrentAsyncState.currentFrag.bytes.Take(readCn).ToArray();
this.CurrentAsyncState.currentFrag.bytes = newbuffer;
//输出读取内容值
this.onReadFrag?.Invoke(this, this);
}
//
if (readCn < Params.flagSize)
{
this.onEndReadFrag?.Invoke(this, this);
this.CurrentAsyncState.FS.Close();
this.CurrentAsyncState.FS.Dispose();
}
}
catch (Exception ex)
{
this.onReadFragError?.Invoke(this, this);
}
}
public bool SelectFileToFragSend()
{
var fraginfo = ChooseFileAndPath.selectFile();
if (fraginfo == null)
{
return(false);
}
var fileinfo = File.OpenRead(fraginfo.filePath);
var frag = new FileFrag
{
currentFragIndex = 0,
fileGuid = fraginfo.fileGuid,
bytes = new byte[Params.flagSize]
};
//构造BeginRead需要传递的状态
this.CurrentAsyncState = new AsyncState {
FS = fileinfo, currentFrag = frag, fileFragInfo = fraginfo
};
return(true);
}