Windows Phone - how display two items on ListBox

Question

In my project, i have two ListBox. The first is populated from JSON file. So de user select one item and click "Add" button, the item is added to ListBox 2. But, I have an "amount" TextBox and I want that its content appears on ListBox 2 also.

Following example:

How is it my screen:

_{(source: infassteste.url.ph)}

As it should be:

_{(source: infassteste.url.ph)}

My code:

    private void AddProd(object sender, RoutedEventArgs e)
    {

        if (ListBoxx.SelectedItem != null)
        {
            Fields fi = (Fields)this.ListBoxx.SelectedItem;

            ListBoxx2.Items.Add(fi);

        }
        else
        {
            MessageBox.Show("Selecione um item para adicionar!");
        }
    }

My XAML:

<ListBox Name="ListBoxx"
         FontSize="30"
         HorizontalContentAlignment="Stretch"
         ItemsSource="{Binding Items}" Margin="10,10,10,411" BorderBrush="Red">
                    <ListBox.Background>
                        <SolidColorBrush Color="#FFC3C3C3" Opacity="0.51"/>
                    </ListBox.Background>

                    <!-- Template to display each item -->
                    <ListBox.ItemTemplate>
                        <DataTemplate>
                            <Grid>
                                <Grid.ColumnDefinitions>
                                    <ColumnDefinition Width="200" />
                                    <ColumnDefinition Width="Auto" />
                                </Grid.ColumnDefinitions>

                                <TextBlock Grid.Column="0" Text="{Binding FNome}"/>
                                <TextBlock Grid.Column="1" Text="{Binding FEstado}"/>
                            </Grid>
                        </DataTemplate>
                    </ListBox.ItemTemplate>
                </ListBox>

<ListBox x:Name="ListBoxx2"
                    FontSize="30"
                    HorizontalContentAlignment="Stretch"
                     Margin="10,311,10,10" BorderBrush="Red">
                    <ListBox.Background>
                        <SolidColorBrush Color="#FFC3C3C3" Opacity="0.51"/>
                    </ListBox.Background>

                    <!-- Template to display each item -->
                    <ListBox.ItemTemplate>
                        <DataTemplate>
                            <Grid>
                                <Grid.ColumnDefinitions>
                                    <ColumnDefinition Width="200" />
                                    <ColumnDefinition Width="Auto" />
                                </Grid.ColumnDefinitions>

                                <TextBlock Grid.Column="0" Text="{Binding FNome}"/>
                                <TextBlock Grid.Column="1" Text="{Binding FEstado}"/>
                            </Grid>
                        </DataTemplate>
                    </ListBox.ItemTemplate>
                </ListBox>

Answer 1

Add a property to your Fields class to hold the quantity. Lets call it Quantity. The Modify the ListBoxx2 ItemTemplate like this.

<ListBox.ItemTemplate>
    <DataTemplate>
        <Grid>
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="200" />
                <ColumnDefinition Width="Auto" />
                <ColumnDefinition Width="Auto" />
             </Grid.ColumnDefinitions>
             <TextBlock Grid.Column="0" Text="{Binding FNome}"/>
             <TextBlock Grid.Column="1" Text="{Binding FEstado}"/>
             <TextBlock Grid.Column="2" Text="{Binding Quantity}"/>
         </Grid>
     </DataTemplate>
 </ListBox.ItemTemplate>

Then in the click event of the Button, add the following..

private void AddProd(object sender, RoutedEventArgs e)
{
    if (ListBoxx.SelectedItem != null)
    {
        Fields fi = (Fields)this.ListBoxx.SelectedItem;
        fi.Quantity = txtQuantity.Text; // SET THE Quantity..
        ListBoxx2.Items.Add(fi);
    }
    else
    {
        MessageBox.Show("Selecione um item para adicionar!");
    }
}

Then the value in the textbox is added to the object and it is bound to the ListBox ItemTemplate