windows8开发学习笔记

• XAML行列定义

  <Grid Background="{StaticResource ApplicationPageBackgroundThemeBrush}">
          <Grid.RowDefinitions>
              <RowDefinition></RowDefinition>
              <RowDefinition Height="Auto"></RowDefinition>
              <RowDefinition Height="Auto"></RowDefinition>
          </Grid.RowDefinitions>
         <Grid.ColumnDefinitions>
                  <ColumnDefinition></ColumnDefinition>
                  <ColumnDefinition></ColumnDefinition>
  	</Grid.ColumnDefinitions>
   </Grid>

• 保存配置数据

  //恢复数据
  protected override void OnNavigatedTo(NavigationEventArgs e)
  {
  	ApplicationDataContainer container = ApplicationData.Current.LocalSettings;
  	if (container.Values.ContainsKey("ListBoxIndex"))
  	{
  		MyListBox.SelectedIndex = (int)ApplicationData.Current.LocalSettings.Values["ListBoxIndex"];
  	}
  }
  //保存数据
  private void MyListBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
  {
  	ListBox list = sender as ListBox;
  	if (list != null)
  	{
  		if (list.SelectedIndex > -1)
  		{
  			ApplicationDataContainer myContainer = ApplicationData.Current.LocalSettings;
  			myContainer.Values["ListBoxIndex"] = list.SelectedIndex;
  		}
  	}
  }

• MessageDialog

  private /*async*/ void TextBlock_Tapped(object sender, TappedRoutedEventArgs e)
          {
              MessageDialog msg = new MessageDialog("测试成功.");
              msg.Commands.Add(new UICommand("Yes"));
              msg.Commands.Add(new UICommand("No"));
              msg.Commands.Add(new UICommand("林武"));
              /*IUICommand result =await*/ msg.ShowAsync();
          }

  去掉其中的注释后，需要等待对话框显示后，函数才会执行完，使用的是异步机制同步化的方法。此外，MessageBox最多只支持3个按钮。非必要时不建议使用该方法显示消息。