Working calendar control in my app

Question

Hi

How can i bind a text/json file to calendar day in my app so whenever the user choose a date and month it takes them to straight to particular text/json page of that day Exp. if the page title for 23/July is "Showing Mercy" if the user sets the calendar control in the app to the above date it will take the user straight to the above page title.

 Note: My project folder contains 365 text/json files

How can i implement this in my app, see my code below

In the MainPage.xaml:

<Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,0">             <toolkit:DatePicker Name="datapicker"/>  </Grid>

 In the MainPage.xaml.cs:

public MainPage()         {             InitializeComponent();             this.datapicker.ValueChanged += new EventHandler<DateTimeValueChangedEventArgs>(picker_ValueChanged);         }          void picker_ValueChanged(object sender, DateTimeValueChangedEventArgs e)        {              DateTime date = (DateTime)e.NewDateTime;              string s=date.ToString("MM-dd-yyyy");              this.NavigationService.Navigate(new Uri("/" + s + ".xaml", UriKind.Relative));//text/json file for the particular day displayed here        }

Reply soon thank you in advance