带有ItemsControl的网格中的Gridsplitter
作者：互联网
我正在尝试制作PropertyGrid自定义控件. PropertyGrid将与Visual Studio中使用的PropertyGrid非常相似.我尝试使用扩展WPF工具包的PropertyGrid,但是必须使用属性指定属性的类别,并且我们需要更改类别运行时.据我所知,属性是不可能的.
因此,我自己制作了PropertyGrid.到目前为止,这是我的代码：
Generic.xaml：
<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:HomeMadePropertyGrid"
xmlns:System="clr-namespace:System;assembly=mscorlib">
<BooleanToVisibilityConverter x:Key="BoolToVisConverter"></BooleanToVisibilityConverter>
<SolidColorBrush x:Key="GlyphBrush" Color="#444" />
<ControlTemplate x:Key="toggleButtonTemplate" TargetType="ToggleButton">
<Grid Width="15" Height="13" Background="Transparent">
<Path x:Name="ExpandPath" Fill="{StaticResource GlyphBrush}" Data="M 4 0 L 8 4 L 4 8 Z" HorizontalAlignment="Left" VerticalAlignment="Center" Margin="1,1,1,1" />
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsChecked" Value="True">
<Setter Property="Data" TargetName="ExpandPath" Value="M 0 4 L 8 4 L 4 8 Z"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
<Style x:Key="toggleButtonStyle" TargetType="ToggleButton">
<Setter Property="Template" Value="{StaticResource toggleButtonTemplate}" />
</Style>
<Style TargetType="{x:Type local:PropertyGrid}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type local:PropertyGrid}">
<Border Background="{TemplateBinding Background}"
BorderBrush="{TemplateBinding BorderBrush}"
BorderThickness="{TemplateBinding BorderThickness}">
<ItemsControl ItemsSource="{TemplateBinding ItemsSource}">
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<VirtualizingStackPanel/>
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
<ItemsControl.ItemTemplate>
<DataTemplate>
<StackPanel Background="{Binding GridColor, RelativeSource={RelativeSource AncestorType=local:PropertyGrid}}">
<StackPanel Orientation="Horizontal">
<ToggleButton x:Name="toggleButton" Height="20" Width="20" Style="{StaticResource toggleButtonStyle}"/>
<TextBlock Text="{Binding Name}" FontWeight="Bold"></TextBlock>
</StackPanel>
<ItemsControl ItemsSource="{Binding Items}">
<ItemsControl.ItemTemplate>
<DataTemplate>
<Grid Visibility="{Binding ElementName=toggleButton, Path=IsChecked, Converter={StaticResource BoolToVisConverter}}"
Grid.IsSharedSizeScope="True">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Border BorderThickness="1" BorderBrush="{Binding GridColor, RelativeSource={RelativeSource AncestorType=local:PropertyGrid}}">
<TextBlock Background="White" Text="{Binding Path=Name}"/>
</Border>
<GridSplitter Width="1"
Grid.RowSpan="4" Grid.Column="1"
HorizontalAlignment="Stretch" VerticalAlignment="Stretch"
Background="{Binding GridColor, RelativeSource={RelativeSource AncestorType=local:PropertyGrid}}"/>
<Border Grid.Column="2" BorderThickness="1" BorderBrush="{Binding GridColor, RelativeSource={RelativeSource AncestorType=local:PropertyGrid}}">
<ContentPresenter Grid.Column="2" Content="{Binding Value}">
<ContentPresenter.Resources>
<DataTemplate DataType="{x:Type System:String}">
<TextBox Text="{Binding Path=Content, RelativeSource={RelativeSource AncestorType={x:Type ContentPresenter}}}"
BorderThickness="0"/>
</DataTemplate>
<DataTemplate DataType="{x:Type System:Int32}">
<TextBox Text="{Binding Path=Content, RelativeSource={RelativeSource AncestorType={x:Type ContentPresenter}}}"
TextAlignment="Right"
BorderThickness="0"/>
</DataTemplate>
<DataTemplate DataType="{x:Type System:Double}">
<TextBox Text="{Binding Path=Content, RelativeSource={RelativeSource AncestorType={x:Type ContentPresenter}}}"
TextAlignment="Right"
BorderThickness="0"/>
</DataTemplate>
<DataTemplate DataType="{x:Type System:Boolean}">
<CheckBox IsChecked="{Binding Path=Content, RelativeSource={RelativeSource AncestorType={x:Type ContentPresenter}}}"
HorizontalAlignment="Center"/>
</DataTemplate>
</ContentPresenter.Resources>
</ContentPresenter>
</Border>
</Grid>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</StackPanel>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</ResourceDictionary>
PropertyGrid.cs
public class PropertyGrid : ItemsControl
{
public Brush GridColor
{
get { return (Brush)GetValue(GridColorProperty); }
set { SetValue(GridColorProperty, value); }
}
public static readonly DependencyProperty GridColorProperty =
DependencyProperty.Register("GridColor", typeof(Brush), typeof(PropertyGrid), new UIPropertyMetadata(new SolidColorBrush(Colors.Transparent)));
static PropertyGrid()
{
DefaultStyleKeyProperty.OverrideMetadata(typeof(PropertyGrid), new FrameworkPropertyMetadata(typeof(PropertyGrid)));
}
}
物业集团
public class PropertyGroup
{
public string Name { get; set; }
public List<PropertyGridItem> Items { get; set; }
public PropertyGroup()
{
Items = new List<PropertyGridItem>();
Name = "";
}
}
PropertyGridItem
public class PropertyGridItem
{
public string Name { get; set; }
public object Value { get; set; }
public PropertyGridItem(string propertyName, object propertyValue)
{
Name = propertyName;
Value = propertyValue;
}
}
我MainWindow.xaml中的这段代码：
<local:PropertyGrid ItemsSource="{Binding Path=Groups}" GridColor="#f0f0f0"/>
我的ViewModel后面的代码：
public MainWindow()
{
InitializeComponent();
this.DataContext = new ViewModel();
}
ViewModel
public class ViewModel
{
public List<PropertyGroup> Groups { get; set; }
public ViewModel()
{
Groups = new List<PropertyGroup>();
PropertyGroup group1 = new PropertyGroup();
group1.Name = "Group1";
group1.Items.Add(new PropertyGridItem("Item1", "test"));
group1.Items.Add(new PropertyGridItem("Item2", 300));
group1.Items.Add(new PropertyGridItem("Item3", true));
group1.Items.Add(new PropertyGridItem("Item4", 5.2));
Groups.Add(group1);
PropertyGroup group2 = new PropertyGroup();
group2.Name = "Group2";
group2.Items.Add(new PropertyGridItem("Item1", "test"));
group2.Items.Add(new PropertyGridItem("Item2", 300));
group2.Items.Add(new PropertyGridItem("Item3", true));
group2.Items.Add(new PropertyGridItem("Item4", 5.2));
Groups.Add(group2);
}
}
我遇到的问题是GridSplitter应用于每一行.我希望将GridSplitter应用于组的所有行.我知道这是因为我为每个项目都创建了一个新的网格.为了使附加属性起作用,这些项目必须是Grid的直接子级.
也不能选择DataGrid,因为GridSplitter仅在列标题之间可用.
因此,总而言之：我如何在ItemsControl中使用GridSplitter的Grid,如果不可能的话,该GridSplitter适用于理想情况下组的所有行或整个Grid.
解决方法:
我终于找到了解决这个问题的方法.
为了使它起作用,我必须：
>在父ItemsControl上将Grid.IsSharedSizeScope设置为true.
>使用任意名称在名称列上设置SharedSizeGroup属性.
>删除名称列上的星形大小.由于某些原因,第一列和第三列都具有星形大小会导致GridSplitter卡住.
>在GridSplitter上设置固定宽度,将Width设置为2.
>将GridSplitter的ResizeBehaviour设置为PreviousAndNext.
这是所得代码的相关部分：
<ItemsControl ItemsSource="{Binding Items}" Grid.IsSharedSizeScope="True">
<ItemsControl.ItemTemplate>
<DataTemplate>
<Grid Visibility="{Binding ElementName=toggleButton, Path=IsChecked, Converter={StaticResource BoolToVisConverter}}" >
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" SharedSizeGroup="nameColumn"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<Border Grid.Column="0" Style="{StaticResource BodyPropertyGrid_CellBorder}">
<TextBlock Text="{Binding Path=Name}"/>
</Border>
<GridSplitter Grid.Column="1" Width="2"
ResizeBehavior="PreviousAndNext"
Style="{StaticResource BodyPropertyGridSplitter}"/>
<Border Grid.Column="2" Style="{StaticResource BodyPropertyGrid_CellBorder}">
<ContentControl Content="{Binding}"
ContentTemplateSelector="{StaticResource propertyItemTemplateSelector}"/>
</Border>
</Grid>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
标签：wpftoolkit,custom-controls,wpf,c,itemscontrol 来源： https://codeday.me/bug/20191122/2059366.html