因此，对于我正在研究的这个项目，我们决定使用.NET PropertyGrid控件。根据用户在ListView控件中选择的项目，将根据运行时构建的对象填充propertygrid。
因此，如果他们选择ListView中的第一个项目（如“Base”），PropertyGrid将显示该组件的属性，例如其尺寸。然后他们选择“Top”，它将在PropertyGrid中显示颜色。无论哪种方式，列表中的每个项目都是一个“组件”对象。
基本上，当选择ListView项时，循环遍历数据集以查找与所选组件对象关联的属性，然后被抛入propertygrid中显示的propertybag类。
我想弄清楚，因为这些组件和属性都是一个类，我如何动态确定哪些属性应该显示为下拉菜单，图像框或文本字段。< / p>
我正在使用Visual Studios 2010 / C＃.NET，而对于动态属性生成，我正在使用Tony Allowatt在CodeProject上发现的显然很受欢迎的“Property Bag”类。我唯一能想到的可能是为数据库添加一个额外的列来获取属性，并使用它来告诉PropertyBag要添加哪些数据类型？这似乎是一个热门话题，但我很难找到如何与动态构建的对象一起完成它。
答案 0 :(得分：7)
它本身并不是一个答案，但我也一直在努力建立这样一个野兽。这是stackoverflow对该主题的最大热门......
How to modify PropertyGrid at runtime (add/remove property and dynamic types/enums)
How to display a dynamic object in property grid?
PropertyGrid and Dynamic Types of Objects
起初我虽然实际上需要基于Expando对象的动态对象，但事实证明并非如此。你可能想确保不要陷入陷阱。
在我的情况下，我真正需要的是一组自定义对象，可以添加一组可变属性。其中每个属性都是三种自定义类型之一（stringType，rangeType或enumType）的实例化。一旦我意识到＆＃34;动态＆＃34;属性不会是任意类类型，项目变得容易扭曲三个stackoverflow示例中讨论的代码。问题How to modify PropertyGrid at runtime (add/remove property and dynamic types/enums)几乎就是我最终的例子。
希望我的随意帮助你找到自己的道路......
答案 1 :(得分：1)
对于wpf，这可以解决整个问题： 链接到来源https://xceed.com/forums/topic/propertygrid-dictionary-not-displaying-values-using-icustomtypedescriptor/
using System;
using System.Collections;
using System.Collections.Generic;
using System.ComponentModel;
using System.Runtime.CompilerServices;
[RefreshProperties(RefreshProperties.All)]
public class DictionaryPropertyGridAdapter<TKey, TValue> : ICustomTypeDescriptor, INotifyPropertyChanged
{
#region Fields
private readonly IDictionary<TKey, PropertyAttributes> propertyAttributeDictionary;
private readonly IDictionary<TKey, TValue> propertyValueDictionary;
#endregion
#region Constructors and Destructors
public DictionaryPropertyGridAdapter(
IDictionary<TKey, TValue> propertyValueDictionary,
IDictionary<TKey, PropertyAttributes> propertyAttributeDictionary = null)
{
this.propertyValueDictionary = propertyValueDictionary;
this.propertyAttributeDictionary = propertyAttributeDictionary;
}
#endregion
#region Events
public event PropertyChangedEventHandler PropertyChanged;
#endregion
public AttributeCollection GetAttributes()
{
return TypeDescriptor.GetAttributes(this, true);
}
public string GetClassName()
{
return TypeDescriptor.GetClassName(this, true);
}
public string GetComponentName()
{
return TypeDescriptor.GetComponentName(this, true);
}
public TypeConverter GetConverter()
{
return TypeDescriptor.GetConverter(this, true);
}
public EventDescriptor GetDefaultEvent()
{
return TypeDescriptor.GetDefaultEvent(this, true);
}
public PropertyDescriptor GetDefaultProperty()
{
return null;
}
public object GetEditor(Type editorBaseType)
{
return TypeDescriptor.GetEditor(this, editorBaseType, true);
}
public EventDescriptorCollection GetEvents(Attribute[] attributes)
{
return TypeDescriptor.GetEvents(this, attributes, true);
}
public PropertyDescriptorCollection GetProperties(Attribute[] attributes)
{
ArrayList properties = new ArrayList();
foreach (var kvp in this.propertyValueDictionary)
{
properties.Add(
new DictionaryPropertyDescriptor(
kvp.Key,
this.propertyValueDictionary,
this.propertyAttributeDictionary));
}
PropertyDescriptor[] props = (PropertyDescriptor[])properties.ToArray(typeof(PropertyDescriptor));
return new PropertyDescriptorCollection(props);
}
public object GetPropertyOwner(PropertyDescriptor pd)
{
return this;
}
EventDescriptorCollection ICustomTypeDescriptor.GetEvents()
{
return TypeDescriptor.GetEvents(this, true);
}
PropertyDescriptorCollection ICustomTypeDescriptor.GetProperties()
{
return ((ICustomTypeDescriptor)this).GetProperties(new Attribute[0]);
}
//[NotifyPropertyChangedInvocator]
protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)
{
this.PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
}
public class PropertyAttributes
{
public string Category { get; set; }
public string Description { get; set; }
public string DisplayName { get; set; }
public bool IsReadOnly { get; set; }
}
internal class DictionaryPropertyDescriptor : PropertyDescriptor
{
#region Fields
private readonly IDictionary<TKey, PropertyAttributes> attributeDictionary;
private readonly TKey key;
private readonly IDictionary<TKey, TValue> valueDictionary;
#endregion
#region Constructors and Destructors
internal DictionaryPropertyDescriptor(
TKey key,
IDictionary<TKey, TValue> valueDictionary,
IDictionary<TKey, PropertyAttributes> attributeDictionary = null)
: base(key.ToString(), null)
{
this.valueDictionary = valueDictionary;
this.attributeDictionary = attributeDictionary;
this.key = key;
}
#endregion
public override string Category => this.attributeDictionary?[this.key].Category ?? base.Category;
public override Type ComponentType => null;
public override string Description => this.attributeDictionary?[this.key].Description ?? base.Description;
public override string DisplayName => this.attributeDictionary?[this.key].DisplayName ?? base.DisplayName;
public override bool IsReadOnly => this.attributeDictionary?[this.key].IsReadOnly ?? false;
public override Type PropertyType => this.valueDictionary[this.key].GetType();
public override bool CanResetValue(object component)
{
return false;
}
public override object GetValue(object component)
{
return this.valueDictionary[this.key];
}
public override void ResetValue(object component)
{
}
public override void SetValue(object component, object value)
{
this.valueDictionary[this.key] = (TValue)value;
}
public override bool ShouldSerializeValue(object component)
{
return false;
}
}
}
用于视图模型
class classViewModel : INotifyPropertyChanged
{
public event PropertyChangedEventHandler PropertyChanged;
protected void OnPropertyChanged(string propertyName)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
}
}
private IDictionary<string, object> Variables { get; set; } = new ConcurrentDictionary<string, object>();
private DictionaryPropertyGridAdapter<string, object> _selectedObj;
public DictionaryPropertyGridAdapter<string, object> SelectedObj
{
get
{
this.Variables["Bool"] = false;
this.Variables["Int"] = 200;
this.Variables["Float"] = 200.5;
this.Variables["String"] = "help";
_selectedObj = new DictionaryPropertyGridAdapter<string, object>(this.Variables);
return _selectedObj;
}
set {
_selectedObj = value;
OnPropertyChanged(nameof(this.SelectedObj));
}
}
}
和xaml
<Window x:Class="testPropertyGrid.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:testPropertyGrid"
xmlns:wpftoolkit="http://schemas.xceed.com/wpf/xaml/toolkit"
mc:Ignorable="d"
Title="MainWindow" Height="350" Width="525">
<Window.Resources>
<local:classViewModel x:Key="ViewModel"/>
</Window.Resources>
<Grid>
<wpftoolkit:PropertyGrid Name="propertyGrid1" SelectedObject="{Binding SelectedObj ,Source={StaticResource ViewModel}}">
</wpftoolkit:PropertyGrid>
</Grid>
答案 2 :(得分：0)
我相信this link会为您提供体面的输入来解决您的问题。 Hpe有帮助。
修改以包含链接的内容：
动态属性声明：
dynamic employee = new BusinessObject();
employee.FirstName = "John";
employee.LastName = "Doe";
支持动态属性的类：
public class BusinessObject : DynamicObject
{
private readonly IDictionary<string, object> dynamicProperties =
new Dictionary<string, object>();
public override bool TryGetMember(GetMemberBinder binder, out object result)
{
var memberName = binder.Name;
return dynamicProperties.TryGetValue(memberName, out result);
}
public override bool TrySetMember(SetMemberBinder binder, object value)
{
var memberName = binder.Name;
dynamicProperties[memberName] = value;
return true;
}
}