更新：
我做了更多的阅读和思考，决定重新实现我的解决方案。
问题背景：我有一个类，其中包含静态属性和一个属性，该属性是通过字典实现的动态属性集合。我想将我的类数据绑定到wpf数据表格中，其中每个静态属性应该是一个列，每个字典条目都应该是网格中的一列。
经过更多的研究，我决定实现一个PropertyBag类，该类将包含我的属性和值的字典。现在几乎所有的东西都能正常工作了。我的表格已经显示出所有正确的列，并且静态属性值已经被正确应用。
然而，现在我无法使字典中的任何值应用到网格中，也不确定接下来该怎么做。
更多信息：
我的数据库有三个表：plate、category和categoryplateassociation。每个plate可以拥有0到多个categories。目前，我正在为每个plate填充所有的categories并将字符串设置为空。然后，在返回关联（一个plate和category之间的关系）时，我会将真实值设置在特定的category名称上。这都发生在网格创建之前。
属性包：
public class PropertyBag
{
private readonly Dictionary<string, string> values = new Dictionary<string, string>();
public string this[string key]
{
get
{
string value;
values.TryGetValue(key, out value);
return value;
}
set
{
if (value == null) values.Remove(key);
else values[key] = value;
}
}
}
修订后的板块类
[TypeDescriptionProvider(typeof(PlateTypeDescriptionProvider))]
public class Plate : INotifyPropertyChanged
{
public int ID;
private string name;
private string status;
private string creator;
private Uri location;
private string description;
public Plate()
{
CustomCategories = new PropertyBag();
}
public PropertyBag CustomCategories { get; set; }
public string Name
{
get { return name;}
set
{
name = value;
NotifyPropertyChanged("Name");
}
}
public string Status
{
get { return status; }
set
{
status = value;
NotifyPropertyChanged("Status");
}
}
public string Creator
{
get { return creator; }
set
{
creator = value;
NotifyPropertyChanged("Creator");
}
}
public Uri Location
{
get { return location; }
set
{
location = value;
NotifyPropertyChanged("Location");
}
}
public string Description
{
get { return description; }
set
{
description = value;
NotifyPropertyChanged("Description");
}
}
public static Plate ConvertDataPlateToBusinessPlate(TestPlate dataPlate)
{
var plate = new Plate
{
Name = dataPlate.Name,
Status = dataPlate.Status,
Creator = dataPlate.Creator,
Description = dataPlate.Description,
Location = new Uri(dataPlate.Location)
};
return plate;
}
public event PropertyChangedEventHandler PropertyChanged;
private void NotifyPropertyChanged(string propertyName)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
}
}
}
修订后的CustomTypeDescriptor：
public override PropertyDescriptorCollection GetProperties()
{
return GetProperties(null);
}
public override PropertyDescriptorCollection GetProperties(Attribute[] attributes)
{
var properties = new ArrayList();
foreach (PropertyDescriptor propertyDescriptor in base.GetProperties(attributes))
{
if(propertyDescriptor.PropertyType.Equals(typeof(PropertyBag)))
{
//Static list of all category names
var categoryNames = Categories.GetAll();
foreach (var categoryName in categoryNames)
{
properties.Add(new PropertyBagPropertyDescriptor(categoryName));
}
}
else
{
properties.Add(propertyDescriptor);
}
}
var props = (PropertyDescriptor[])properties.ToArray(typeof(PropertyDescriptor));
return new PropertyDescriptorCollection(props);
}
修改后的PropertyDescriptor
public class PropertyBagPropertyDescriptor : PropertyDescriptor
{
public PropertyBagPropertyDescriptor(string name) : base(name, null)
{}
public override bool CanResetValue(object component)
{
return true;
}
public override object GetValue(object component)
{
return ((PropertyBag) component)[Name];
}
public override void ResetValue(object component)
{
((PropertyBag)component)[Name] = null;
}
public override void SetValue(object component, object value)
{
((PropertyBag) component)[Name] = (string) value;
}
public override bool ShouldSerializeValue(object component)
{
return ((PropertyBag)component)[Name] != null;
}
public override Type ComponentType
{
get { return typeof(PropertyBag); }
}
public override bool IsReadOnly
{
get { return false; }
}
public override Type PropertyType
{
get { return typeof(string); }
}
}
简单的视图模型
public TestPlateAdministratorViewModel()
{
CommandAggregator = new TestPlateAdministratorCommandAggregator(this);
LoadData();
}
public static TestPlateAdministratorCommandAggregator CommandAggregator { get; set; }
public ObservableCollection<Plate> TestPlates{ get; set; }
private static void LoadData()
{
CommandAggregator.LoadPlatesCommand.Execute(null);
CommandAggregator.LoadCategoriesCommand.Execute(null);
}
}