使用绑定从列表创建菜单项会导致空白项 [英] Creating menuitems from list with bindings results in blank items

问题描述

我有一个Menuitem，该菜单项应显示为子项的数量列表，该菜单项显示为此数量定义的子项的单位列表.数量列表是在MenuItem的ItemsSource的代码后面设置的.

I have a Menuitem which is supposed to show a list of quantities as children which show a list of the units defined for this quantity as children. The list of quantities is set in code-behind to the ItemsSource of the MenuItem.

<MenuItem Header="common.unitsystem" Name="mnuItemUnits">
    <MenuItem.Resources>
        <DataTemplate DataType="{x:Type guidev:Measurement}">
            <StackPanel>
                <TextBlock Text="Measurement"/>
                <TextBlock Text="{Binding Name}"/>
            </StackPanel>
        </DataTemplate>
        <HierarchicalDataTemplate DataType="{x:Type guidev:Quantity}" ItemsSource="{Binding Measurements}">
            <StackPanel>
                <TextBlock Text="Quantity "/>
                <TextBlock Text="{Binding Name}"/>
            </StackPanel>
        </HierarchicalDataTemplate>
    </MenuItem.Resources>
</MenuItem>

结果是带有弹出菜单的MenuItem，但是子项(数量)上没有任何绑定文本.子项目的数量是正确的，但是它们本身没有子级.因此，我认为绑定存在问题，因为我添加了用于检查DataTemplates是否实际工作的固定文本(数量").

The result is my MenuItem with a popup, but the subitems (quantities) don't have any bound text on them. The number of subitems is correct, but they have no children themselves. So i suppose there is a problem with the bindings, as the fixed Text i added to check if the DataTemplates actually work is showing ("Quantity").

我认为我不能将ItemTemplate用于MenuItem，因为这是具有2种不同类型的分层结构...

I think i can't use ItemTemplate for the MenuItem as this is hierarchical with 2 different types...

我的数据模型如下:

public class Quantity
{
    [XmlAttribute]
    public string Name;

    [XmlElement]
    public List<Measurement> Measurement;
}


public class Measurement
{
    [XmlAttribute]
    public string Name;

    [XmlAttribute]
    public string Symbol;

    [XmlAttribute]
    public string System;

    public string ToBaseFormula;

    public string FromBaseFormula;
}

推荐答案

哦，很高兴您问到有关数据模型的信息……现在我知道了:

Oh man, glad you asked about the data model... now i figured it out:

解决方案是:使用数据模型中的属性"，而不是字段"！

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