如何選擇Windows Phone 7中的列表框值？

Question

我正在做生日日曆的一個示例應用程序。在這我使用三個列表框控件，如日期，月份和年份。使用listboxitem我將數據添加到它。

<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> 

所以，我想選擇那些列表框值，我必須添加（如：24-MAR-1988手段= 24 + 03 + 88）。我有索引值。

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

我coudn't得到選擇的值：

串B = listBox1.SelectedItem.ToString（）; MessageBox.Show（b）;

Answer 1

我真的建議你使用Silverlight Toolkit for Windows Phone。它有一個DatePicker控制。

如果你真的想用你自己的ComboBox控件，我推薦你至少用C＃中的DateTime類型來使事情更容易。