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Type.GetConstructorImpl Method

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

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

'Declaration
Protected MustOverride Function GetConstructorImpl ( _
	bindingAttr As BindingFlags, _
	binder As Binder, _
	callConvention As CallingConventions, _
	types As Type(), _
	modifiers As ParameterModifier() _
) As ConstructorInfo
'Usage
Dim bindingAttr As BindingFlags 
Dim binder As Binder 
Dim callConvention As CallingConventions 
Dim types As Type()
Dim modifiers As ParameterModifier()
Dim returnValue As ConstructorInfo 

returnValue = Me.GetConstructorImpl(bindingAttr, _
	binder, callConvention, types, modifiers)

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 Nothing.

binder
Type: System.Reflection.Binder

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

-or-

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

callConvention
Type: System.Reflection.CallingConventions

The CallingConventions object that specifies the set of rules to use regarding the order and layout of arguments, how the return value is passed, what registers are used for arguments, and the stack is cleaned up.

types
Type: System.Type()

An array of Type objects representing the number, order, and type of the parameters for the constructor to get.

-or-

An empty array of the type Type (that is, Type[] types = new Type[0]) to get a constructor that takes no parameters.

modifiers
Type: System.Reflection.ParameterModifier()

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

Type: System.Reflection.ConstructorInfo
A ConstructorInfo object representing the constructor that matches the specified requirements, if found; otherwise, Nothing.

ExceptionCondition
ArgumentNullException

types is Nothing.

-or-

One of the elements in types is Nothing.

ArgumentException

types is multidimensional.

-or-

modifiers is multidimensional.

-or-

types and modifiers do not have the same length.

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.

If an exact match does not exist, the binder will attempt to coerce the parameter types specified in the types array in order to select a match. If the binder is unable to select a match, then Nothing is returned.

The following BindingFlags filter flags can be used to define which constructors 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 constructors in the search.

  • Specify BindingFlags.NonPublic to include non-public constructors (that is, private and protected constructors) in the search.

See System.Reflection.BindingFlags for more information.

This method implements GetConstructor.

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.

.NET Framework

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

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

XNA Framework

Supported in: 3.0, 2.0, 1.0

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