RectangleConverter.CreateInstance(ITypeDescriptorContext, IDictionary) 方法
定义
已知对象的属性值集,创建此类型的实例。Creates an instance of this type given a set of property values for the object. 这对于不可变但仍要提供可变属性的对象很有用。This is useful for objects that are immutable but still want to provide changeable properties.
public:
override System::Object ^ CreateInstance(System::ComponentModel::ITypeDescriptorContext ^ context, System::Collections::IDictionary ^ propertyValues);
public override object CreateInstance (System.ComponentModel.ITypeDescriptorContext context, System.Collections.IDictionary propertyValues);
override this.CreateInstance : System.ComponentModel.ITypeDescriptorContext * System.Collections.IDictionary -> obj
Public Overrides Function CreateInstance (context As ITypeDescriptorContext, propertyValues As IDictionary) As Object
参数
- context
- ITypeDescriptorContext
通过其可提供附加上下文的 ITypeDescriptorContext。A ITypeDescriptorContext through which additional context can be provided.
- propertyValues
- IDictionary
新属性值的字典。A dictionary of new property values. 该字典包含一系列名称-值对,分别与对 GetProperties(ITypeDescriptorContext, Object, Attribute[]) 方法的调用所返回的每个属性相对应。The dictionary contains a series of name-value pairs, one for each property returned from a call to the GetProperties(ITypeDescriptorContext, Object, Attribute[]) method.
返回
新创建的对象;如果未能创建该对象,则为 null。The newly created object, or null if the object could not be created. 默认实现返回 null。The default implementation returns null.