[WP-WS] Save file, HELP!

Target Platforms Desktop
1

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!!

2

What is WPS? How are you writing to binary file?

3

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

4

Still the question remains, how are you writing/reading.

5

I have used FileStream but at runtime the application crashes…

6

What is the callstack of the crash? Also show some code

7

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

8

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!

9

How the error looks like and what line throws it, there are multiple places here which output an “error”

10

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

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

11

There are many methods on how to write/read file, from my perspective this code looks complicated, but looks okey.

There are easier ways on how to do it though, for ex., try using Unity - Scripting API: File

12

Thanks! I try it!