windows 8 store app- authorize exception

Question

Hellow

i am tring to write simple json file localy

in my windows 8 store app

but i get an exception : UnauthorizedAccessException

this is the code:

 internal async static void Save(List<RecipeDataGroup> list)
        {
           
            string json = JsonConvert.SerializeObject(list);
          
             var _file = await Package.Current.InstalledLocation.CreateFileAsync("Data\\Recipes2.txt");

            await Windows.Storage.FileIO.WriteTextAsync(_file ,json );
            
          

        }

How to solve it ?

---

m.sh

Answer 1

You posted to the wpf forum.

.

I think I know what the problem is though.

You're limited to where you can write.

The simplest option is to use LocalFolder

Like:

StorageFolder folder =
    Windows.Storage.ApplicationData.Current.LocalFolder;

https://msdn.microsoft.com/en-us/library/windows/apps/xaml/hh758325.aspx

.

Please post any further windows store app questions to one of the forums for that:

https://social.msdn.microsoft.com/Forums/windowsapps/en-us/home?category=windowsapps

---

Hope that helps.
Recent Technet articles: Property List Editing ;   Dynamic XAML

Answer 2

You cannot create a file in the installation folder of the app because it is a read-only location as documented here:  https://msdn.microsoft.com/en-us/library/windows/apps/hh967755.aspx

You could try to create the file in the local folder:

 var _file = await ApplicationData.Current.LocalFolder.CreateFileAsync("Recipes2.txt");
 await Windows.Storage.FileIO.WriteTextAsync(_file ,json );

But please ask any questions related to Windows Store Apps here: https://social.msdn.microsoft.com/Forums/windowsapps/en-us/home?category=windowsapps

Please remember to mark helpful posts as answer to close your threads.

Answer 3

Or you could use local folder.

Oh wait.

I already suggested that.

---

Hope that helps.
Recent Technet articles: Property List Editing ;   Dynamic XAML

Answer 4

Thanks you all, it work.

but i got for any build- new directory...

how can i use the file in development time ?

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m.sh