public async void Save_as(IStorageFile file, Excuse excuseToWrite)
{
using (IRandomAccessStream stream = await file.OpenAsync(FileAccessMode.ReadWrite))
using(Stream outputStream = stream.AsStreamForWrite())
{
DataContractSerializer serializer = new DataContractSerializer(typeof(Excuse));
serializer.WriteObject(outputStream, excuseToWrite);
}
OnPropertyChanged("excuseToWrite");
}
public async Task<Excuse> OpenFile(IStorageFile file, Excuse excuseToRead)
{
using (IRandomAccessStream stream = await file.OpenAsync(FileAccessMode.Read))
using(Stream inputStream = stream.AsStreamForRead())
{
DataContractSerializer serializer = new DataContractSerializer(typeof(Excuse));
excuseToRead = serializer.ReadObject(inputStream) as Excuse;
}
return excuseToRead;
}
private async void randomExcuse_Click(object sender, RoutedEventArgs e)
{
loading = true;
IReadOnlyList<IStorageFile> items = await folder.GetFilesAsync();
List<IStorageFile> files=new List<IStorageFile>();
foreach(IStorageFile item in items)
{
if (item.FileType == ".xml")
files.Add(item);
}
if (files.Count < 1)
currentExcuse = await currentExcuse.OpenFile(files[rand.Next(files.Count)], currentExcuse);
else {
MessageDialog dialog= new MessageDialog("В папке нету сохраненных извинений");
await dialog.ShowAsync();
}
ReBindingData();
}
private async void Open_Click(object sender, RoutedEventArgs e)
{
loading = true;
FileOpenPicker picker = new FileOpenPicker
{
SuggestedStartLocation = PickerLocationId.DocumentsLibrary,
ViewMode=PickerViewMode.List
};
picker.FileTypeFilter.Add(".xml");
file = await picker.PickSingleFileAsync();
string s=file.Path;
if (file != null)
{
try {
currentExcuse = await currentExcuse.OpenFile(file, currentExcuse);
}
catch(SerializationException ex)
{
MessageDialog dialog = new MessageDialog("Ошибка при чтении файла. Убедитесь что открываемый файл является сохраненным извинением \n");
await dialog.ShowAsync();
}
if (currentExcuse.Description != null)
ReBindingData();
else
return;
loading = true;
Save.IsEnabled = true;
save_as.IsEnabled = true;
}
}