static memberAsyncAppendText(path)= UnblockViaNewThread(fun()-> System.IO.File.AppendText(path))

static memberAsyncOpenRead(path)= UnblockViaNewThread(fun()-> System.IO.File.OpenRead(path))

static memberAsyncOpenWrite(path)= UnblockViaNewThread(fun()-> System.IO.File.OpenWrite(path))

#if FX_NO_FILE_OPTIONS

letaccess=match accesswith Some v-> v| None-> System.IO.FileAccess.ReadWrite

letshare=match sharewith Some v-> v| None-> System.IO.FileShare.None

#if!FX_NO_FILE_OPTIONS

letoptions=match optionswith Some v-> v| None-> System.IO.FileOptions.None

letbufferSize=match bufferSizewith Some v-> v| None->0x1000

UnblockViaNewThread(fun()->

#if FX_NO_FILE_OPTIONS

new System.IO.FileStream(path,mode,access,share,bufferSize))

new System.IO.FileStream(path,mode,access,share,bufferSize, options))

static memberOpenTextAsync(path)= System.IO.File.AsyncOpenText(path)

static memberAppendTextAsync(path)= System.IO.File.AsyncAppendText(path)

static memberOpenReadAsync(path)= System.IO.File.AsyncOpenRead(path)

static memberOpenWriteAsync(path)= System.IO.File.AsyncOpenWrite(path)

#if FX_NO_FILE_OPTIONS

System.IO.File.AsyncOpen(path, mode, ?access=access, ?share=share,?bufferSize=bufferSize)

System.IO.File.AsyncOpen(path, mode, ?access=access, ?share=share,?bufferSize=bufferSize,?options=options)