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Type.GetPropertyImpl Method

When overridden in a derived class, searches for the specified property whose parameters match the specified argument types and modifiers, using the specified binding constraints.

[Visual Basic]
Protected MustOverride Function GetPropertyImpl( _
   ByVal name As String, _
   ByVal bindingAttr As BindingFlags, _
   ByVal binder As Binder, _
   ByVal returnType As Type, _
   ByVal types() As Type, _
   ByVal modifiers() As ParameterModifier _
) As PropertyInfo
[C#]
protected abstract PropertyInfo GetPropertyImpl(
 string name,
 BindingFlags bindingAttr,
 Binder binder,
 Type returnType,
 Type[] types,
 ParameterModifier[] modifiers
);
[C++]
protected: virtual PropertyInfo* GetPropertyImpl(
 String* name,
 BindingFlags bindingAttr,
 Binder* binder,
 Type* returnType,
 Type* types[],
 ParameterModifier modifiers[]
) = 0;
[JScript]
protected abstract function GetPropertyImpl(
   name : String,
 bindingAttr : BindingFlags,
 binder : Binder,
 returnType : Type,
 types : Type[],
 modifiers : ParameterModifier[]
) : PropertyInfo;

Parameters

name
The String containing the name of the property to get.
bindingAttr
A bitmask comprised of one or more BindingFlags that specify how the search is conducted.

-or-

Zero, to return a null reference (Nothing in Visual Basic).

binder
A Binder object that defines a set of properties and enables binding, which can involve selection of an overloaded member, coercion of argument types, and invocation of a member through reflection.

-or-

A null reference (Nothing in Visual Basic), to use the DefaultBinder.

returnType
The return type of the property.
types
An array of Type objects representing the number, order, and type of the parameters for the indexed property to get.

-or-

An empty array of the type Type (that is, Type[] types = new Type[0]) to get a property that is not indexed.

modifiers
An array of ParameterModifier objects representing the attributes associated with the corresponding element in the types array. The default binder does not process this parameter.

Return Value

A PropertyInfo object representing the property that matches the specified requirements, if found; otherwise, a null reference (Nothing in Visual Basic).

Exceptions

Exception Type Condition
AmbiguousMatchException More than one property is found with the specified name and matching the specified binding constraints.
ArgumentNullException name is a null reference (Nothing in Visual Basic).

-or-

types is a null reference (Nothing).

-or-

One of the elements in types is a null reference (Nothing).

ArgumentException types is multidimensional.

-or-

modifiers is multidimensional.

-or-

types and modifiers do not have the same length.

Remarks

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 types array and the modifiers array have the same length. A parameter specified in the types array can have the following attributes, which are specified in the modifiers array: pdIn, pdOut, pdLcid, pdRetval, pdOptional, and pdHasDefault, which represent [In], [Out], [lcid], [retval], [optional], and a value specifying whether the parameter has a default value. A parameter's associated attributes are stored in the metadata and are used for interoperability.

The following BindingFlags filter flags can be used to define which properties to include in the search:

  • Instance to include instance properties in the search.
  • Static to include static properties in the search.
  • Public to include public properties in the search.
  • NonPublic to include non-public properties (that is, private and protected properties) in the search.

The following BindingFlags modifier flags can be used to change how the search works:

  • IgnoreCase to ignore the case of name.
  • DeclaredOnly to search only the properties declared on the Type, not properties that were simply inherited.

See System.Reflection.BindingFlags for more information.

If the requested type is non-public and the caller does not have ReflectionPermission to reflect non-public objects outside the current assembly, this method returns a null reference (Nothing in Visual Basic).

Requirements

Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family, .NET Compact Framework, Common Language Infrastructure (CLI) Standard

See Also

Type Class | Type Members | System Namespace | PropertyInfo | String | BindingFlags | Binder | DefaultBinder | ParameterModifier | ReflectionPermission | GetProperty | GetProperties

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