您可以使用 aListView
而不是Grid
in a ScrollViewer
,因为它默认支持虚拟化。除此之外 - 拥有更好的用户体验可能比要填写的可怕的长文本框列表更好 - 可能将您的表单分解为多个页面或使用 aFlipView
在字段组之间翻转。
*编辑 - 示例
XAML
<Page
x:Class="App10.MainPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:App10"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d">
<Page.Resources>
<DataTemplate
x:Key="TextFieldTemplate">
<Grid>
<Grid.RowDefinitions>
<RowDefinition
Height="Auto" />
<RowDefinition
Height="Auto" />
</Grid.RowDefinitions>
<TextBlock
Text="{Binding Label}" />
<TextBox
Text="{Binding Value, Mode=TwoWay}"
Grid.Row="1" />
</Grid>
</DataTemplate>
<DataTemplate
x:Key="BoolFieldTemplate">
<CheckBox
Content="{Binding Label}"
IsChecked="{Binding Value, Mode=TwoWay}" />
</DataTemplate>
<local:FieldTemplateSelector
x:Key="FieldTemplateSelector"
TextTemplate="{StaticResource TextFieldTemplate}"
BoolTemplate="{StaticResource BoolFieldTemplate}" />
</Page.Resources>
<Grid
Background="{StaticResource ApplicationPageBackgroundThemeBrush}">
<ListView
x:Name="lv"
ItemTemplateSelector="{StaticResource FieldTemplateSelector}" />
</Grid>
</Page>
C#
using System.Collections.Generic;
using App10.Common;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Navigation;
namespace App10
{
public sealed partial class MainPage : Page
{
public MainPage()
{
this.InitializeComponent();
this.lv.ItemsSource =
new List<object>(
new object[]
{
new BoolFieldViewModel { Label = "Some bool field" },
new TextFieldViewModel { Label = "Some text field" },
new TextFieldViewModel { Label = "Some text field" },
new BoolFieldViewModel { Label = "Some bool field" },
new BoolFieldViewModel { Label = "Some bool field" },
new TextFieldViewModel { Label = "Some text field" },
});
}
/// <summary>
/// Invoked when this page is about to be displayed in a Frame.
/// </summary>
/// <param name="e">Event data that describes how this page was reached. The Parameter
/// property is typically used to configure the page.</param>
protected override void OnNavigatedTo(NavigationEventArgs e)
{
}
}
public abstract class FieldViewModel<T> : BindableBase
{
public string Label { get; set; }
#region Value
private T _value;
public T Value
{
get { return _value; }
set { this.SetProperty(ref _value, value); }
}
#endregion
}
public class BoolFieldViewModel : FieldViewModel<bool> { }
public class TextFieldViewModel : FieldViewModel<string> { }
public class FieldTemplateSelector : DataTemplateSelector
{
public DataTemplate BoolTemplate { get; set; }
public DataTemplate TextTemplate { get; set; }
protected override DataTemplate SelectTemplateCore(object item, DependencyObject container)
{
if (item is BoolFieldViewModel) return BoolTemplate;
if (item is TextFieldViewModel) return TextTemplate;
return base.SelectTemplateCore(item, container);
}
}
}