2

大家好,我在解决方案上使用带有 mvvm 的 WPF,但我遇到了一个问题。我有我在 viewModel 上使用的这个对象:

public class SuperCharacter : INotifyPropertyChanged
{
    public List<Character> Characters { get; set; }
    public string Name { get; set; }
    private Character charactersExp;
    private const string currentCharacterExpandedString = "CurrentCharacterExp";
    public Character CurrentCharacterExpanded
    {
        get { return this.charactersExp; }
        set
        {
            this.charactersExp = value;
            this.OnPropertyChanged(currentCharacterExpandedString);
        }
    }

    public string CalcSize { get; set; }

    public void OnPropertyChanged(string propertyName)
    {


        if (this.PropertyChanged != null)
        {
            this.PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
        }

    }

    public event PropertyChangedEventHandler PropertyChanged;
}

我有这样的看法:

    Window.Resources>


    <DataTemplate x:Key="TrackPointUserSavedSearchDtoTemplate" DataType="{x:Type src:Character}">
        <StackPanel >
            <TextBlock x:Name="caption" Margin="1" 
        Text="{Binding First}" MaxWidth="{Binding ElementName=image, Path=ActualWidth}" MaxHeight="40" />
        </StackPanel>
    </DataTemplate>

    <DataTemplate x:Key="DynamicUserSaveSearchesTemplate" DataType="{x:Type src:Character}">
        <ContentPresenter x:Name="content" ContentTemplate="{StaticResource TrackPointUserSavedSearchDtoTemplate    }"/>
    </DataTemplate>

    <DataTemplate x:Key="IconoTrackPointUSTemplate" DataType="{x:Type src:SuperCharacter}">
        <ScrollViewer Grid.Row="2" HorizontalScrollBarVisibility="Auto" VerticalScrollBarVisibility="Auto">
            <Expander Height="180" Margin="12,0,0,-127" >

                <Expander.Header>
                    <Binding Path="Name"></Binding>
                </Expander.Header>                   

                    <ListView Name="ProblemListView" HorizontalContentAlignment="Stretch"  ItemsSource="{Binding Characters}" SelectedItem="{Binding CurrentCharacterExpanded}"  ItemTemplate="{StaticResource DynamicUserSaveSearchesTemplate}" Panel.ZIndex="20">
                    </ListView>                       
            </Expander>
        </ScrollViewer>
    </DataTemplate>

    <DataTemplate x:Key="DynamicTrackPointUSTemplate" DataType="{x:Type src:SuperCharacter}" >
        <ContentPresenter x:Name="content" ContentTemplate="{StaticResource IconoTrackPointUSTemplate    }"/>
    </DataTemplate>
</Window.Resources>
<Grid>
    <Grid.RowDefinitions>
        <RowDefinition Height="42"></RowDefinition>
        <RowDefinition Height="Auto"></RowDefinition>           
    </Grid.RowDefinitions>
    <Label Content="Entitty's TrackPoint list:" Margin="12,5,76,9" Name="labelName" />
    <ListView Grid.Row="1" ItemsSource="{Binding SuperCharacters}" SelectedItem="{Binding CurrentSuperCharacterExpanded}" ItemTemplate="{StaticResource DynamicTrackPointUSTemplate}">
    </ListView>
<Grid/>

问题是当我展开扩展器时,Listview 调用 ProblemListView 中的元素位于下一个扩展器下方。

我想知道如何使这个扩展列表看起来正确?如果我展开扩展器,problemListView 会正确显示。

请记住,列表是动态的,可以有不同数量的元素

4

1 回答 1

0

首先,我认为设置Grid.Row="2"in ScrollVieweryourDataTemplate没有多大意义。其次,margin您的Expander正在造成麻烦,我不太明白您为什么要设置底部边距(-127)。

您需要Height为您的 指定 a ScrollViewer,否则网格行将随着ListView增长而扩展。

尝试对 `IconoTrackPointUSTemplate 进行以下更改:

<DataTemplate x:Key="IconoTrackPointUSTemplate" DataType="{x:Type WpfApplication1:SuperCharacter}">
    <ScrollViewer Height="50" HorizontalScrollBarVisibility="Auto" VerticalScrollBarVisibility="Auto">
        <Expander Margin="12,0,0,0" Header="{Binding Name}">
            <ListView Name="ProblemListView" 
                        HorizontalContentAlignment="Stretch" 
                        ItemsSource="{Binding Characters}" 
                        SelectedItem="{Binding CurrentCharacterExpanded}" 
                        ItemTemplate="{StaticResource DynamicUserSaveSearchesTemplate}" 
                        Panel.ZIndex="20" />
        </Expander>
    </ScrollViewer>
</DataTemplate>

作为提示,请注意我如何更改扩展器标头的绑定,您可以在执行内联时节省相当多的空间:

Header="{Binding Name}"
于 2012-12-04T17:41:12.110 回答