public void MoveNext()
{
switch (_state)
{
case 1:
{
buffer = new byte[BUFFER_SIZE * 128];
Random ran = new Random();
ran.NextBytes(buffer);
fs = new FileStream(fileName, FileMode.Create, FileAccess.Write, FileShare.None, BUFFER_SIZE, FileOptions.Asynchronous);
//await fs.WriteAsync(buffer, 0, buffer.Length);
_awaiter = fs.WriteAsync(buffer, 0, buffer.Length).GetAwaiter();
if (_awaiter.IsCompleted)
{
goto case 2;
}
else
{
_state = 2;
_self = this;
_builder.AwaitUnsafeOnCompleted(ref _awaiter, ref _self);
}
}
break;
case 2:
{
Console.WriteLine("Write finished!");
fs?.Dispose();
_builder.SetResult();
}
break;
}
}
public Task Start()
{
_self = this;
_builder.Start(ref _self);
return(_builder.Task);
}
public static Task Case1()
{
AsyncMethodStateMachine stateMachine = new AsyncMethodStateMachine();
return(stateMachine.Start());
}
