我创建了一个BindingHelper来设置样式设置器中的绑定，就像这个例子......
UWP Binding in Style Setter not working
但它不起作用。 any anyon可以帮助我完成示例或找到我的错误吗？
<Page
x:Class="eve.TerminView"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:eve"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d">
<Page.Resources>
<ResourceDictionary Source="Styles.xaml" />
</Page.Resources>
<Grid Background="{StaticResource ResourceKey=StyleBackground}">
<ItemsControl ItemsSource="{Binding Path=termindata}">
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<Grid HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Margin="50" BorderBrush="White" BorderThickness="1">
<Grid.RowDefinitions>
<RowDefinition Height="*"></RowDefinition>
<RowDefinition Height="*"></RowDefinition>
<RowDefinition Height="*"></RowDefinition>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"></ColumnDefinition>
<ColumnDefinition Width="*"></ColumnDefinition>
<ColumnDefinition Width="*"></ColumnDefinition>
</Grid.ColumnDefinitions>
</Grid>
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
<ItemsControl.ItemTemplate>
<DataTemplate>
<Border Background="Green">
<TextBlock Text="{Binding text}"></TextBlock>
</Border>
</DataTemplate>
</ItemsControl.ItemTemplate>
<ItemsControl.ItemContainerStyle>
<Style TargetType="ContentPresenter">
<Setter Property="local:BindingHelper.GridColumnBindingPath" Value="column"/>
<Setter Property="local:BindingHelper.GridRowBindingPath" Value="row"/>
</Style>
</ItemsControl.ItemContainerStyle>
</ItemsControl>
</Grid>
这里是公共类BindingHelper
背后的代码namespace test
{
public sealed partial class TerminView : Page
{
public List<TerminDate> termindata;
public TerminView()
{
this.InitializeComponent();
termindata = new List<TerminDate>();
termindata.Add(new TerminDate(1, 1, "Test 1"));
termindata.Add(new TerminDate(1, 2, "Test 2"));
}
}
public class TerminDate
{
public TerminDate(int row, int column, string text)
{
this.row = row;
this.column = column;
this.text = text;
}
public int row { get; set; }
public int column { get; set; }
public string text { get; set; }
}
public class BindingHelper
{
public static readonly DependencyProperty GridColumnBindingPathProperty =
DependencyProperty.RegisterAttached(
"GridColumnBindingPath", typeof(string), typeof(BindingHelper),
new PropertyMetadata(null, GridBindingPathPropertyChanged));
public static readonly DependencyProperty GridRowBindingPathProperty =
DependencyProperty.RegisterAttached(
"GridRowBindingPath", typeof(string), typeof(BindingHelper),
new PropertyMetadata(null, GridBindingPathPropertyChanged));
public static string GetGridColumnBindingPath(DependencyObject obj)
{
return (string)obj.GetValue(GridColumnBindingPathProperty);
}
public static void SetGridColumnBindingPath(DependencyObject obj, string value)
{
obj.SetValue(GridColumnBindingPathProperty, value);
}
public static string GetGridRowBindingPath(DependencyObject obj)
{
return (string)obj.GetValue(GridRowBindingPathProperty);
}
public static void SetGridRowBindingPath(DependencyObject obj, string value)
{
obj.SetValue(GridRowBindingPathProperty, value);
}
private static void GridBindingPathPropertyChanged(
DependencyObject obj, DependencyPropertyChangedEventArgs e)
{
var propertyPath = e.NewValue as string;
if (propertyPath != null)
{
var gridProperty =
e.Property == GridColumnBindingPathProperty
? Grid.ColumnProperty
: Grid.RowProperty;
BindingOperations.SetBinding(
obj,
gridProperty,
new Binding { Path = new PropertyPath(propertyPath) });
}
}
}
}
答案 0 :(得分：-1)
感谢您的解决方案！它有效......
这里我添加了完整的代码
public sealed partial class TerminView : Page
{
public TerminView()
{
this.InitializeComponent();
(this.Content as FrameworkElement).DataContext = this;
TerminData = new List<TerminDate>();
TerminData.Add(new TerminDate(1, 1, "Test 1"));
TerminData.Add(new TerminDate(1, 2, "Test 2"));
}
public List<TerminDate> TerminData
{
get { return (List<TerminDate>)GetValue(TerminDataProperty); }
set { SetValue(TerminDataProperty, value); }
}
public static readonly DependencyProperty TerminDataProperty = DependencyProperty.Register(
"TerminData", typeof(List<TerminDate>), typeof(TerminView), new PropertyMetadata(default(List<TerminDate>), TerminDataPropertyChanged));
private static void TerminDataPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
var control = d as TerminView;
}
public event PropertyChangedEventHandler PropertyChanged;
private void OnPropertyChanged([CallerMemberName] string propertyName = null)
{
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
}
}
public class TerminDate
{
public TerminDate(int row, int column, string text)
{
this.row = row;
this.column = column;
this.text = text;
}
public int row { get; set; }
public int column { get; set; }
public string text { get; set; }
}
public class BindingHelper
{
public static readonly DependencyProperty GridColumnBindingPathProperty =
DependencyProperty.RegisterAttached(
"GridColumnBindingPath", typeof(string), typeof(BindingHelper),
new PropertyMetadata(null, GridBindingPathPropertyChanged));
public static readonly DependencyProperty GridRowBindingPathProperty =
DependencyProperty.RegisterAttached(
"GridRowBindingPath", typeof(string), typeof(BindingHelper),
new PropertyMetadata(null, GridBindingPathPropertyChanged));
public static string GetGridColumnBindingPath(DependencyObject obj)
{
return (string)obj.GetValue(GridColumnBindingPathProperty);
}
public static void SetGridColumnBindingPath(DependencyObject obj, string value)
{
obj.SetValue(GridColumnBindingPathProperty, value);
}
public static string GetGridRowBindingPath(DependencyObject obj)
{
return (string)obj.GetValue(GridRowBindingPathProperty);
}
public static void SetGridRowBindingPath(DependencyObject obj, string value)
{
obj.SetValue(GridRowBindingPathProperty, value);
}
private static void GridBindingPathPropertyChanged(
DependencyObject obj, DependencyPropertyChangedEventArgs e)
{
var propertyPath = e.NewValue as string;
if (propertyPath != null)
{
var gridProperty =
e.Property == GridColumnBindingPathProperty
? Grid.ColumnProperty
: Grid.RowProperty;
BindingOperations.SetBinding(
obj,
gridProperty,
new Binding { Path = new PropertyPath(propertyPath) });
}
}
}
这里是为了完整性XAML
<Page.Resources>
<ResourceDictionary Source="Styles.xaml" />
</Page.Resources>
<Grid Background="{StaticResource ResourceKey=StyleBackground}">
<ItemsControl ItemsSource="{Binding Path=TerminData}">
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<Grid HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Margin="50" BorderBrush="White" BorderThickness="1">
<Grid.RowDefinitions>
<RowDefinition Height="*"></RowDefinition>
<RowDefinition Height="*"></RowDefinition>
<RowDefinition Height="*"></RowDefinition>
<RowDefinition Height="*"></RowDefinition>
<RowDefinition Height="*"></RowDefinition>
<RowDefinition Height="*"></RowDefinition>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"></ColumnDefinition>
<ColumnDefinition Width="*"></ColumnDefinition>
<ColumnDefinition Width="*"></ColumnDefinition>
<ColumnDefinition Width="*"></ColumnDefinition>
<ColumnDefinition Width="*"></ColumnDefinition>
<ColumnDefinition Width="*"></ColumnDefinition>
<ColumnDefinition Width="*"></ColumnDefinition>
</Grid.ColumnDefinitions>
</Grid>
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
<ItemsControl.ItemTemplate>
<DataTemplate>
<Border Background="Green">
<TextBlock Text="{Binding text}"></TextBlock>
</Border>
</DataTemplate>
</ItemsControl.ItemTemplate>
<ItemsControl.ItemContainerStyle>
<Style TargetType="ContentPresenter">
<Setter Property="local:BindingHelper.GridColumnBindingPath" Value="column"/>
<Setter Property="local:BindingHelper.GridRowBindingPath" Value="row"/>
</Style>
</ItemsControl.ItemContainerStyle>
</ItemsControl>
</Grid>