public static async Task<Stream> OpenWriteStream(string filePath, bool overwrite = true, ApplicationDataLocation location = ApplicationDataLocation.Local)
{
StorageFolder folder = GetApplicationDataFolder(location);
folder = await folder.CreateFolderLazy(filePath);
var fileName = Path.GetFileName(filePath);
CreationCollisionOption createOption = (overwrite ? CreationCollisionOption.ReplaceExisting : CreationCollisionOption.OpenIfExists);
try
{
var file = await folder.CreateFileAsync(fileName, createOption);
if (file == null)
{
return null;
}
return await file.OpenStreamForWriteAsync();
}
catch (IOException)
{
return null;
}
catch (UnauthorizedAccessException)
{
return null;
}
}
public static async Task <StorageFile> OpenFile(string filePath, bool overwrite = true, ApplicationDataLocation location = ApplicationDataLocation.Local)
{
if (string.IsNullOrEmpty(filePath))
{
return(null);
}
StorageFolder folder = GetApplicationDataFolder(location);
folder = await folder.CreateFolderLazy(filePath);
var fileName = Path.GetFileName(filePath);
CreationCollisionOption createOption = (overwrite ? CreationCollisionOption.ReplaceExisting : CreationCollisionOption.OpenIfExists);
try
{
return(await folder.CreateFileAsync(fileName, createOption));
}
catch (IOException)
{
return(null);
}
catch (UnauthorizedAccessException)
{
return(null);
}
}