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CollectionConverter.GetProperties Method (ITypeDescriptorContext, Object, Attribute[])

Gets a collection of properties for the type of array specified by the value parameter using the specified context and attributes.

Namespace:  System.ComponentModel
Assembly:  System (in System.dll)

public override PropertyDescriptorCollection GetProperties(
	ITypeDescriptorContext context,
	Object value,
	Attribute[] attributes
)

Parameters

context
Type: System.ComponentModel.ITypeDescriptorContext

An ITypeDescriptorContext that provides a format context.

value
Type: System.Object

An Object that specifies the type of array to get the properties for.

attributes
Type: System.Attribute[]

An array of type Attribute that will be used as a filter.

Return Value

Type: System.ComponentModel.PropertyDescriptorCollection
A PropertyDescriptorCollection with the properties that are exposed for this data type, or null if there are no properties. This method always returns null.

The context parameter can be used to extract additional information about the environment this converter is being invoked from. This can be null, so always check. Also, properties on the context object can return null.

The attributes array that you pass in will be used to filter the array. The attributes can have a mix of Type and Attribute objects. Filtering is defined by the following rules:

  • A Type object will be treated as a wildcard; it will match any property that has the Type in its set of attributes.

  • If a property does not have an Attribute of the same class, the property will not be included in the returned array.

  • If the attribute is an instance of Attribute, the property must be an exact match or it will not be included in the returned array.

  • If an Attribute instance is specified and it is the default property, it will be included in the returned array even if there is no instance of the Attribute in the property.

Collections do not support properties; therefore, this method always returns null.

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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