Wie wählt man die Listbox Werte in Windows Phone 7?

Question

Ich mache eine Beispiel-App für Geburtstagskalender. In diesem verwende ich drei Listbox-Steuerelement wie Datum, Monat und Jahr. Mit listboxitem habe ich Daten hinzugefügt.

<ListBox Height="56" HorizontalAlignment="Left" Margin="243,171,0,0" Name="listBox1" VerticalAlignment="Top" Width="207"> 
      <ListBoxItem Content="01" HorizontalContentAlignment="Center" IsSelected="True" VerticalContentAlignment="Center" FontSize="32" FontWeight="Bold" FontFamily="Segoe WP Bold" BorderThickness="5" /> 
      <ListBoxItem Content="02" HorizontalContentAlignment="Center" IsSelected="True" VerticalContentAlignment="Center" FontSize="32" FontWeight="Bold" FontFamily="Segoe WP Bold" BorderThickness="5"/> 
      <ListBoxItem Content="03" HorizontalContentAlignment="Center" IsSelected="True" VerticalContentAlignment="Center" FontSize="32" FontWeight="Bold" FontFamily="Segoe WP Bold" BorderThickness="5" /> 
      <ListBoxItem Content="04" HorizontalContentAlignment="Center" IsSelected="True" VerticalContentAlignment="Center" FontSize="32" FontWeight="Bold" FontFamily="Segoe WP Bold" BorderThickness="5" /> 
      <ListBoxItem Content="05" HorizontalContentAlignment="Center" IsSelected="True" VerticalContentAlignment="Center" FontSize="32" FontWeight="Bold" FontFamily="Segoe WP Bold" BorderThickness="5" /> 
      <ListBoxItem Content="06" HorizontalContentAlignment="Center" IsSelected="True" VerticalContentAlignment="Center" FontSize="32" FontWeight="Bold" FontFamily="Segoe WP Bold" BorderThickness="5" /> 
      <ListBoxItem Content="07" HorizontalContentAlignment="Center" IsSelected="True" VerticalContentAlignment="Center" FontSize="32" FontWeight="Bold" FontFamily="Segoe WP Bold" BorderThickness="5" /> 
      <ListBoxItem Content="08" HorizontalContentAlignment="Center" IsSelected="True" VerticalContentAlignment="Center" FontSize="32" FontWeight="Bold" FontFamily="Segoe WP Bold" BorderThickness="5" /> 
      <ListBoxItem Content="09" HorizontalContentAlignment="Center" IsSelected="True" VerticalContentAlignment="Center" FontSize="32" FontWeight="Bold" FontFamily="Segoe WP Bold" BorderThickness="5" /> 
      <ListBoxItem Content="10" HorizontalContentAlignment="Center" IsSelected="True" VerticalContentAlignment="Center" FontSize="32" FontWeight="Bold" FontFamily="Segoe WP Bold" BorderThickness="5" /> 
      <ListBoxItem Content="11" HorizontalContentAlignment="Center" IsSelected="True" VerticalContentAlignment="Center" FontSize="32" FontWeight="Bold" FontFamily="Segoe WP Bold" BorderThickness="5" /> 
      <ListBoxItem Content="12" HorizontalContentAlignment="Center" IsSelected="True" VerticalContentAlignment="Center" FontSize="32" FontWeight="Bold" FontFamily="Segoe WP Bold" BorderThickness="5" /> 
      <ListBoxItem Content="13" HorizontalContentAlignment="Center" IsSelected="True" VerticalContentAlignment="Center" FontSize="32" FontWeight="Bold" FontFamily="Segoe WP Bold" BorderThickness="5" /> 
      <ListBoxItem Content="14" HorizontalContentAlignment="Center" IsSelected="True" VerticalContentAlignment="Center" FontSize="32" FontWeight="Bold" FontFamily="Segoe WP Bold" BorderThickness="5" /> 
      <ListBoxItem Content="15" HorizontalContentAlignment="Center" IsSelected="True" VerticalContentAlignment="Center" FontSize="32" FontWeight="Bold" FontFamily="Segoe WP Bold" BorderThickness="5" /> 
      <ListBoxItem Content="16" HorizontalContentAlignment="Center" IsSelected="True" VerticalContentAlignment="Center" FontSize="32" FontWeight="Bold" FontFamily="Segoe WP Bold" BorderThickness="5" /> 
      <ListBoxItem Content="17" HorizontalContentAlignment="Center" IsSelected="True" VerticalContentAlignment="Center" FontSize="32" FontWeight="Bold" FontFamily="Segoe WP Bold" BorderThickness="5" /> 
      <ListBoxItem Content="18" HorizontalContentAlignment="Center" IsSelected="True" VerticalContentAlignment="Center" FontSize="32" FontWeight="Bold" FontFamily="Segoe WP Bold" BorderThickness="5" /> 
      <ListBoxItem Content="19" HorizontalContentAlignment="Center" IsSelected="True" VerticalContentAlignment="Center" FontSize="32" FontWeight="Bold" FontFamily="Segoe WP Bold" BorderThickness="5" /> 
      <ListBoxItem Content="20" HorizontalContentAlignment="Center" IsSelected="True" VerticalContentAlignment="Center" FontSize="32" FontWeight="Bold" FontFamily="Segoe WP Bold" BorderThickness="5" /> 
      <ListBoxItem Content="21" HorizontalContentAlignment="Center" IsSelected="True" VerticalContentAlignment="Center" FontSize="32" FontWeight="Bold" FontFamily="Segoe WP Bold" BorderThickness="5" /> 
      <ListBoxItem Content="22" HorizontalContentAlignment="Center" IsSelected="True" VerticalContentAlignment="Center" FontSize="32" FontWeight="Bold" FontFamily="Segoe WP Bold" BorderThickness="5" /> 
      <ListBoxItem Content="23" HorizontalContentAlignment="Center" IsSelected="True" VerticalContentAlignment="Center" FontSize="32" FontWeight="Bold" FontFamily="Segoe WP Bold" BorderThickness="5" /> 
      <ListBoxItem Content="24" HorizontalContentAlignment="Center" IsSelected="True" VerticalContentAlignment="Center" FontSize="32" FontWeight="Bold" FontFamily="Segoe WP Bold" BorderThickness="5" /> 
      <ListBoxItem Content="25" HorizontalContentAlignment="Center" IsSelected="True" VerticalContentAlignment="Center" FontSize="32" FontWeight="Bold" FontFamily="Segoe WP Bold" BorderThickness="5" /> 
      <ListBoxItem Content="26" HorizontalContentAlignment="Center" IsSelected="True" VerticalContentAlignment="Center" FontSize="32" FontWeight="Bold" FontFamily="Segoe WP Bold" BorderThickness="5" /> 
      <ListBoxItem Content="27" HorizontalContentAlignment="Center" IsSelected="True" VerticalContentAlignment="Center" FontSize="32" FontWeight="Bold" FontFamily="Segoe WP Bold" BorderThickness="5"/> 
      <ListBoxItem Content="28" HorizontalContentAlignment="Center" IsSelected="True" VerticalContentAlignment="Center" FontSize="32" FontWeight="Bold" FontFamily="Segoe WP Bold" BorderThickness="5" /> 
      <ListBoxItem Content="29" HorizontalContentAlignment="Center" IsSelected="True" VerticalContentAlignment="Center" FontSize="32" FontWeight="Bold" FontFamily="Segoe WP Bold" BorderThickness="5" /> 
      <ListBoxItem Content="30" HorizontalContentAlignment="Center" IsSelected="True" VerticalContentAlignment="Center" FontSize="32" FontWeight="Bold" FontFamily="Segoe WP Bold" BorderThickness="5" /> 
      <ListBoxItem Content="31" HorizontalContentAlignment="Center" IsSelected="True" VerticalContentAlignment="Center" FontSize="32" FontWeight="Bold" FontFamily="Segoe WP Bold" BorderThickness="5" /> 
    </ListBox> 

so, ich will diese Listbox Werte auszuwählen und ich muss hinzufügen (zB: 24-MAR-1988 Mittel = 24 + 03 + 88). Ich habe Indexwert.

int a = int.Parse ((listBox1.SelectedIndex + 1) .ToString());

I coudn't ausgewählten Wert erhalten:

String b = listBox1.SelectedItem.ToString(); MessageBox.Show (b);

Answer 1

Ich empfehle Ihnen wirklich Silverlight Toolkit for Windows Phone zu verwenden. Es hat eine DatePicker Kontrolle.

Wenn Sie wirklich Ihre eigenen ComboBox-Steuerelemente verwenden möchten, empfehle ich Sie mindestens verwenden DateTime Typ in C# verfügbar, um die Dinge zu erleichtern.