Type.GetProperty Method (String, Type, Type, ParameterModifier)
Updated: September 2009
Searches for the specified public property whose parameters match the specified argument types and modifiers.
Assembly: mscorlib (in mscorlib.dll)
public final function GetProperty( name : String, returnType : Type, types : Type, modifiers : ParameterModifier ) : PropertyInfo
- Type: System.Type
The return type of the property.
- Type: System.Type
An array of Type objects representing the number, order, and type of the parameters for the indexed property to get.
An empty array of the type Type (that is, Type types = new Type) to get a property that is not indexed.
Return ValueType: System.Reflection.PropertyInfo
A PropertyInfo object representing the public property that matches the specified requirements, if found; otherwise, a null reference (Nothing in Visual Basic).
Implements_Type.GetProperty(String, Type, Type, ParameterModifier)
More than one property is found with the specified name and matching the specified argument types and modifiers.
name is a null reference (Nothing in Visual Basic).
types is a null reference (Nothing in Visual Basic).
types is multidimensional.
modifiers is multidimensional.
types and modifiers do not have the same length.
An element of types is a null reference (Nothing in Visual Basic).
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.
Although the default binder does not process ParameterModifier (the modifiers parameter), you can use the abstract System.Reflection.Binder class to write a custom binder that does process modifiers. ParameterModifier is only used when calling through COM interop, and only parameters that are passed by reference are handled.
The search for name is case-sensitive. The search includes public static and public instance properties.
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.
Indexers and Default Properties
Visual Basic 2005, Visual C# 2005, and Visual C++ 2005 have simplified syntax for accessing indexed properties and allow one indexed property to be a default for its type. For example, if the variable myList refers to an ArrayList, the syntax myList (myList(3) in Visual Basic) retrieves the element with the index of 3. You can overload the property.
In C#, this feature is called an indexer and cannot be refered to by name. By default, a C# indexer appears in metadata as an indexed property named "Item". However, a class library developer can use the IndexerNameAttribute attribute to change the name of the indexer in the metadata. For example, the String class has an indexer named Chars. Indexed properties created using languages other than C# can have names other than Item, as well.
To determine whether a type has a default property, use the GetCustomAttributes(Type, Boolean) method to test for the DefaultMemberAttribute attribute. If the type has DefaultMemberAttribute, the MemberName property returns the name of the default property.
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.