Type.GetProperties Method (BindingFlags)
When overridden in a derived class, searches for the properties of the current Type, using the specified binding constraints.
Assembly: mscorlib (in mscorlib.dll)
Public MustOverride Function GetProperties ( bindingAttr As BindingFlags ) As PropertyInfo()
Parameters
- bindingAttr
-
Type:
System.Reflection.BindingFlags
A bitmask comprised of one or more BindingFlags that specify how the search is conducted.
-or-
Zero, to return null.
Return Value
Type: System.Reflection.PropertyInfo()An array of PropertyInfo objects representing all properties of the current Type that match the specified binding constraints.
-or-
An empty array of type PropertyInfo, if the current Type does not have properties, or if none of the properties match the binding constraints.
A property is considered public to reflection if it has at least one accessor that is public. Otherwise the property is considered private, and you must use BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.Static (in Visual Basic, combine the values using Or) to get it.
The GetProperties method does not return properties in a particular order, such as alphabetical or declaration order. Your code must not depend on the order in which properties are returned, because that order varies.
The following BindingFlags filter flags can be used to define which nested types to include in the search:
You must specify either BindingFlags.Instance or BindingFlags.Static in order to get a return.
Specify BindingFlags.Public to include public properties in the search.
Specify BindingFlags.NonPublic to include non-public properties (that is, private, internal, and protected properties) in the search. Only protected and internal properties on base classes are returned; private properties on base classes are not returned.
Specify BindingFlags.FlattenHierarchy to include public and protected static members up the hierarchy; private static members in inherited classes are not included.
The following BindingFlags modifier flags can be used to change how the search works:
BindingFlags.DeclaredOnly to search only the properties declared on the Type, not properties that were simply inherited.
See System.Reflection.BindingFlags for more information.
A property is considered public to reflection if it has at least one accessor that is public. Otherwise the property is considered private, and you must use BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.Static (in Visual Basic, combine the values using Or) to get it.
If the current T:System.Type represents a constructed generic type, this method returns the PropertyInfo objects with the type parameters replaced by the appropriate type arguments.
If the current Type represents a type parameter in the definition of a generic type or generic method, this method searches the properties of the class constraint.
The following example defines a class named PropertyClass that includes six properties: two are public, one is private, one is protected, one is internal (Friend in Visual Basic), and one is protected internal (Protected Friend in Visual Basic). It then displays some basic property information (the property name and type, whether it is read/write, and the visibility of its get and set accessors) for the properties that match the specified binding constraints.
Imports System.Reflection ' Create a class having six properties. Public Class PropertyClass Public ReadOnly Property Property1() As String Get Return "hello" End Get End Property Public ReadOnly Property Property2() As String Get Return "hello" End Get End Property Protected ReadOnly Property Property3() As String Get Return "hello" End Get End Property Private ReadOnly Property Property4 As Integer Get Return 32 End Get End Property Friend ReadOnly Property Property5 As String Get Return "value" End Get End Property Protected Friend ReadOnly Property Property6 As String Get Return "value" End Get End Property End Class Public Module Example Public Sub Main() Dim t As Type = GetType(PropertyClass) ' Get the public properties. Dim propInfos As PropertyInfo() = t.GetProperties(BindingFlags.Public Or BindingFlags.Instance) Console.WriteLine("The number of public properties: {0}", propInfos.Length) Console.WriteLine() ' Display the public properties. DisplayPropertyInfo(propInfos) ' Get the non-public properties. Dim propInfos1 As PropertyInfo() = t.GetProperties(BindingFlags.NonPublic Or BindingFlags.Instance) Console.WriteLine("The number of non-public properties: {0}", propInfos1.Length) Console.WriteLine() ' Display all the non-public properties. DisplayPropertyInfo(propInfos1) End Sub Public Sub DisplayPropertyInfo(ByVal propInfos() As PropertyInfo) ' Display information for all properties. For Each propInfo In propInfos Dim readable As Boolean = propInfo.CanRead Dim writable As Boolean = propInfo.CanWrite Console.WriteLine(" Property name: {0}", propInfo.Name) Console.WriteLine(" Property type: {0}", propInfo.PropertyType) Console.WriteLine(" Read-Write: {0}", readable And writable) If readable Then Dim getAccessor As MethodInfo = propInfo.GetMethod Console.WriteLine(" Visibility: {0}", GetVisibility(getAccessor)) End If If writable Then Dim setAccessor As MethodInfo = propInfo.SetMethod Console.WriteLine(" Visibility: {0}", GetVisibility(setAccessor)) End If Console.WriteLine() Next End Sub Public Function GetVisibility(accessor As MethodInfo) As String If accessor.IsPublic Then Return "Public" ElseIf accessor.IsPrivate Then Return "Private" Else If accessor.IsFamily Then Return "Protected" Else If accessor.IsAssembly Then Return "Internal/Friend" Else Return "Protected Internal/Friend" End If End Function End Module ' The example displays the following output: ' The number of public properties: 2 ' ' Property name: Property1 ' Property type: System.String ' Read-Write: False ' Visibility: Public ' ' Property name: Property2 ' Property type: System.String ' Read-Write: False ' Visibility: Public ' ' The number of non-public properties: 4 ' ' Property name: Property3 ' Property type: System.String ' Read-Write: False ' Visibility: Protected ' ' Property name: Property4 ' Property type: System.Int32 ' Read-Write: False ' Visibility: Private ' ' Property name: Property5 ' Property type: System.String ' Read-Write: False ' Visibility: Internal/Friend ' ' Property name: Property6 ' Property type: System.String ' Read-Write: False ' Visibility: Protected Internal/Friend
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0