propertygrid多个对象怎么显示

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作者
猴君
阅读量:4

在PropertyGrid中显示多个对象可以通过两种方式实现:

  1. 使用属性类别:
  • 创建一个父对象,其中包含多个子对象。

  • 给每个子对象添加一个属性类别,以便在PropertyGrid中显示不同的分组。

  • 在PropertyGrid中设置SelectedObject属性为父对象。

示例代码如下:

public class ParentObject { [Category("Group 1")] public string Property1 { get; set; } [Category("Group 1")] public int Property2 { get; set; } [Category("Group 2")] public bool Property3 { get; set; } } ParentObject parentObject = new ParentObject(); propertyGrid1.SelectedObject = parentObject; 
  1. 使用属性描述器:
  • 创建一个自定义的属性描述器类,继承自ICustomTypeDescriptor接口,并实现相关方法。

  • 在GetProperties方法中,返回包含多个对象属性的PropertyDescriptorCollection。

  • 将实例化的属性描述器对象设置为PropertyGrid的SelectedObject属性。

示例代码如下:

public class CustomTypeDescriptor : ICustomTypeDescriptor { private List<object> objects; public CustomTypeDescriptor(List<object> objects) { this.objects = objects; } 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 TypeDescriptor.GetDefaultProperty(this, true); } public object GetEditor(Type editorBaseType) { return TypeDescriptor.GetEditor(this, editorBaseType, true); } public EventDescriptorCollection GetEvents(Attribute[] attributes) { return TypeDescriptor.GetEvents(this, attributes, true); } public EventDescriptorCollection GetEvents() { return TypeDescriptor.GetEvents(this, true); } public PropertyDescriptorCollection GetProperties(Attribute[] attributes) { // 返回包含多个对象属性的PropertyDescriptorCollection List<PropertyDescriptor> properties = new List<PropertyDescriptor>(); foreach (var obj in objects) { PropertyDescriptorCollection collection = TypeDescriptor.GetProperties(obj, attributes); foreach (PropertyDescriptor descriptor in collection) { properties.Add(new CustomPropertyDescriptor(descriptor, obj)); } } return new PropertyDescriptorCollection(properties.ToArray()); } public PropertyDescriptorCollection GetProperties() { return GetProperties(null); } public object GetPropertyOwner(PropertyDescriptor pd) { return this; } } public class CustomPropertyDescriptor : PropertyDescriptor { private PropertyDescriptor descriptor; private object obj; public CustomPropertyDescriptor(PropertyDescriptor descriptor, object obj) : base(descriptor) { this.descriptor = descriptor; this.obj = obj; } public override object GetValue(object component) { return descriptor.GetValue(obj); } public override void SetValue(object component, object value) { descriptor.SetValue(obj, value); } public override void ResetValue(object component) { descriptor.ResetValue(obj); } public override bool CanResetValue(object component) { return descriptor.CanResetValue(obj); } public override bool ShouldSerializeValue(object component) { return descriptor.ShouldSerializeValue(obj); } public override Type ComponentType { get { return descriptor.ComponentType; } } public override bool IsReadOnly { get { return descriptor.IsReadOnly; } } public override Type PropertyType { get { return descriptor.PropertyType; } } } List<object> objects = new List<object> { new object1(), new object2(), new object3() }; CustomTypeDescriptor typeDescriptor = new CustomTypeDescriptor(objects); propertyGrid1.SelectedObject = typeDescriptor; 

以上两种方式都可以在PropertyGrid中显示多个对象的属性,并根据需要进行分组和组织。

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