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我试图从xaml实例化一个对象。该对象的类继承自基类。除了基类属性(“Key”)没有从xaml正确设置以外,一切都很好。它始终为空。该对象的属性本身在xaml中设置为OK。另外,当我从代码中设置Key属性时,它会设置好。从xaml创建对象时,基类属性始终为空
我在MainWindow方法的左括号上放置了一个断点来查看对象数据。悬停细节告诉我,Key属性始终为空。
任何想法我做错了什么?
<?xml version="1.0" encoding="utf-8" ?>
<GroupUiItem xmlns="clr-namespace:Configurator.UiCore"
Key="key_grp1" UserName="grp1">
<ParameterUiItem Key="key_par1" UserName="par1"/>
<GroupUiItem Key="key_grp2" UserName="grp2">
<ParameterUiItem Key="key_par2" UserName="par2"/>
<ParameterUiItem Key="key_par3" UserName="par3"/>
</GroupUiItem>
<ParameterUiItem Key="key_par4" UserName="par4"/>
<ParameterUiItem Key="key_par5" UserName="par5"/>
<ParameterUiItem Key="key_par6" UserName="par6"/>
</GroupUiItem>
public partial class MainWindow : Window
{
public MainWindow()
{
GroupUiItem ConfigUi = new GroupUiItem();
InitializeComponent();
using (FileStream stream = new FileStream("XMLFile1.xaml", FileMode.Open, FileAccess.Read))
{
ConfigUi = XamlReader.Load(stream) as GroupUiItem;
}
ConfigUi.Key = "key_grp1"; // this works OK
CategoryList.ItemsSource = ConfigUi.Children;
}
}
// These are in the Configurator.UiCore namespace:
public class ConfiguratorUiItem
{
protected string _Key;
public string Key
{
get { return _Key; }
set { _Key = value; }
}
}
[ContentProperty("Children")]
public class GroupUiItem : ConfiguratorUiItem
{
private ObservableCollection<ConfiguratorUiItem> _Children = new ObservableCollection<ConfiguratorUiItem>();
public ObservableCollection<ConfiguratorUiItem> Children
{ get { return _Children; }
set { _Children = value; }
}
private string _UserName;
public string UserName
{ get { return _UserName; }
set { _UserName = value; }
}
}
public class ParameterUiItem : ConfiguratorUiItem
{
private string _ParameterType;
public string ParameterType
{
get { return _ParameterType; }
set { _ParameterType = value; }
}
private string _UserName;
public string UserName
{
get { return _UserName; }
set { _UserName = value; }
}
}