[WP-WS] Save file, HELP!!!

Hi, I am trying to convert my work to Windows Phone and Windows Store, but I cannot write a routine to write and read a binary file for save game and save the status game. There is an documentations to do this? There are samples?

Thanks!!

 

sorry I have wrong word. WP and WS, Windows Phone and Windows Store!

 

I have used FileStream but at runtime the application crashes...

 

I could be wrong, but I think you have to use a different api for windows store apps... (yes?)

https://msdn.microsoft.com/en-us/library/windows/apps/windows.storage.storagefile.aspx

 

Sorry for late:

this is the code test to write a file... but when I try to read I have an error:

#if NETFX_CORE

public async void WriteBuffer() {

var _Name = _fileName;
var _Folder = Windows.Storage.ApplicationData.Current.LocalFolder;
var _Option = Windows.Storage.CreationCollisionOption.ReplaceExisting;
var _File = await _Folder.CreateFileAsync(_Name, _Option);
if (_File != null)
{

Debug.Log("*** Create file: " + _Name);​

}
else

return;​

byte[] buffer = new byte[_length];
System.Buffer.BlockCopy(_buffer, 0, buffer, 0, _length);
await Windows.Storage.FileIO.WriteBytesAsync(_File, buffer);​

}

#endif

for read:

#if NETFX_CORE

public async void ReadBuffer() {

var _Name = _fileName;
var _Folder = Windows.Storage.ApplicationData.Current.LocalFolder;
var _File = await _Folder.GetFileAsync(_Name);

if (_File != null)
{

Debug.Log("*** Open file: " + _Name);​

}
else {

Debug.LogError("*** Error open file: " + _Name); <<<< this is the error message. So GetFileAsync fails.
return;​

}

IBuffer buffer = await FileIO.ReadBufferAsync(_File);
using (DataReader dataReader = DataReader.FromBuffer(buffer))
{

dataReader.ReadBytes(_buffer);
if(_buffer == null) {

Debug.LogError("*** Cannot open file for read: " + _Name);​

}​

}​

}

#endif

Thanks for help!

 

inside ReadBuffer() fails _Folder.GetFileAsync(_Name);

but, my questione is: is it a right way to save and write a file? Thanks!!!

 

Thanks! I try it!