How to transfer textbox to another page in Windows Phone 8.1-C#

Question

Hi guys I am new to app development and was wondeing how to transfer a textbox that holds a value to another page. My code is below:

Basket Button

 private void Confirm_Click(object sender, RoutedEventArgs e)
    {
        Frame.Navigate(typeof(Confirmation) , Totaltxt_TextChanged = TotalValue); 

    }

The OnNav in which information needs being sent to

   protected override void OnNavigatedTo(NavigationEventArgs e)
    {
        Basket Basket = e.Parameter as Basket;

        if (Basket != null) 
        {
            COsttxt.Text = string.Format("{0:C}", Basket.Totaltxt_TextChanged);
        }
    }

I have tried with just TotalValue which is the main value that needs to be sent but that seem to work I even set it in the textbox of the NavTo page:

        <TextBox x:Name="COsttxt" HorizontalAlignment="Left" Height="58" Margin="229,258,0,0" TextWrapping="Wrap" Text="{Binding TotalValue}" VerticalAlignment="Top" Width="131" TextChanged="COsttxt_TextChanged"/>

So is there a way to just send the Totaltxt textbox from Basket.xaml and make the textbox value display in Confirmation.xaml?

Answer 1

You are passing a parameter to Confirmation page which I am sure is not of type Basket and hence you are getting null when you do as conversion.

You should be simply passing/reading TotalValue this way:

private void Confirm_Click(object sender, RoutedEventArgs e)
{
    Frame.Navigate(typeof(Confirmation) , TotalValue);
}

protected override void OnNavigatedTo(NavigationEventArgs e)
{
    var totalValue = e.Parameter as string; // or 'as' whatever is type of TotalValue

    if (totalValue != null) 
    {
        COsttxt.Text = string.Format("{0:C}", totalValue);
    }
}

Edit: Pass the final textbox value as below and keep rest of the code same:

Frame.Navigate(typeof(Confirmation) , textboxName.Text);