Type.IsByRef 속성
Type이 참조로 전달되는지 여부를 나타내는 값을 가져옵니다.
네임스페이스: System
어셈블리: mscorlib(mscorlib.dll)
구문
‘선언
Public ReadOnly Property IsByRef As Boolean
‘사용 방법
Dim instance As Type
Dim value As Boolean
value = instance.IsByRef
public bool IsByRef { get; }
public:
virtual property bool IsByRef {
bool get () sealed;
}
/** @property */
public final boolean get_IsByRef ()
public final function get IsByRef () : boolean
속성 값
Type이 참조로 전달되면 true이고, 그렇지 않으면 false입니다.
설명
실제 형식을 얻으려면 참조에 의해 전달된 형식을 역참조하고 이 형식에 대해 GetElementType을 호출합니다.
예제
다음 예제에서는 IsByRef 속성을 사용하여 지정된 형식이 참조에 의해 전달되는지 여부를 확인하는 방법을 보여 줍니다. 또한 HasElementTypeImpl 메서드를 재정의하는 MyTypeDelegator 클래스를 정의합니다. 기본 클래스는 HasElementType 속성을 확인하고 요소 형식을 표시합니다.
Imports System
Imports System.Reflection
Imports Microsoft.VisualBasic
Public Class MyTypeDelegator
Inherits TypeDelegator
Public myElementType As String = Nothing
Private myType As Type = Nothing
Public Sub New(ByVal myType As Type)
MyBase.New(myType)
Me.myType = myType
End Sub 'New
' Override Type.HasElementTypeImpl().
Protected Overrides Function HasElementTypeImpl() As Boolean
' Determine whether the type is an array.
If myType.IsArray Then
myElementType = "array"
Return True
End If
' Determine whether the type is a reference.
If myType.IsByRef Then
myElementType = "reference"
Return True
End If
' Determine whether the type is a pointer.
If myType.IsPointer Then
myElementType = "pointer"
Return True
End If
' The type is not a reference, array, or pointer type.
Return False
End Function 'HasElementTypeImpl
End Class 'MyTypeDelegator
Public Class Type_HasElementTypeImpl
Public Shared Sub Main()
Try
Dim myInt As Integer = 0
Dim myArray(4) As Integer
Dim myType As New MyTypeDelegator(myArray.GetType())
Console.WriteLine(ControlChars.NewLine + "Determine whether a variable refers to an array or pointer or reference type." + ControlChars.NewLine)
' Determine whether myType is an array, pointer, reference type.
If myType.HasElementType Then
Console.WriteLine("The type of myArray is {0}.", myType.myElementType.ToString())
Else
Console.WriteLine("myArray is not an array, pointer, or reference type.")
End If
myType = New MyTypeDelegator(myInt.GetType())
' Determine whether myType is an array, pointer, reference type.
If myType.HasElementType Then
Console.WriteLine("The type of myInt is {0}.", myType.myElementType.ToString())
Else
Console.WriteLine("myInt is not an array, pointer, or reference type.")
End If
Catch e As Exception
Console.WriteLine("Exception: {0}", e.Message.ToString())
End Try
End Sub 'Main
End Class 'Type_HasElementTypeImpl
using System;
using System.Reflection;
public class MyTypeDelegator : TypeDelegator
{
public string myElementType = null;
private Type myType = null ;
public MyTypeDelegator(Type myType) : base(myType)
{
this.myType = myType;
}
// Override Type.HasElementTypeImpl().
protected override bool HasElementTypeImpl()
{
// Determine whether the type is an array.
if(myType.IsArray)
{
myElementType = "array";
return true;
}
// Determine whether the type is a reference.
if(myType.IsByRef)
{
myElementType = "reference";
return true;
}
// Determine whether the type is a pointer.
if(myType.IsPointer)
{
myElementType = "pointer";
return true;
}
// Return false if the type is not a reference, array, or pointer type.
return false;
}
}
public class Type_HasElementTypeImpl
{
public static void Main()
{
try
{
int myInt = 0 ;
int[] myArray = new int[5];
MyTypeDelegator myType = new MyTypeDelegator(myArray.GetType());
// Determine whether myType is an array, pointer, reference type.
Console.WriteLine("\nDetermine whether a variable is an array, pointer, or reference type.\n");
if( myType.HasElementType)
Console.WriteLine("The type of myArray is {0}.", myType.myElementType);
else
Console.WriteLine("myArray is not an array, pointer, or reference type.");
myType = new MyTypeDelegator(myInt.GetType());
// Determine whether myType is an array, pointer, reference type.
if( myType.HasElementType)
Console.WriteLine("The type of myInt is {0}.", myType.myElementType);
else
Console.WriteLine("myInt is not an array, pointer, or reference type.");
}
catch( Exception e )
{
Console.WriteLine("Exception: {0}", e.Message);
}
}
}
using namespace System;
using namespace System::Reflection;
public ref class MyTypeDelegator: public TypeDelegator
{
public:
String^ myElementType;
private:
Type^ myType;
public:
MyTypeDelegator( Type^ myType )
: TypeDelegator( myType )
{
this->myType = myType;
}
protected:
// Override Type::HasElementTypeImpl().
virtual bool HasElementTypeImpl() override
{
// Determine whether the type is an array.
if ( myType->IsArray )
{
myElementType = "array";
return true;
}
// Determine whether the type is a reference.
if ( myType->IsByRef )
{
myElementType = "reference";
return true;
}
// Determine whether the type is a pointer.
if ( myType->IsPointer )
{
myElementType = "pointer";
return true;
}
// Return false if the type is not a reference, array, or pointer type.
return false;
}
};
int main()
{
try
{
int myInt = 0;
array<Int32>^myArray = gcnew array<Int32>(5);
MyTypeDelegator^ myType = gcnew MyTypeDelegator( myArray->GetType() );
// Determine whether myType is an array, pointer, reference type.
Console::WriteLine( "\nDetermine whether a variable is an array, pointer, or reference type.\n" );
if ( myType->HasElementType )
Console::WriteLine( "The type of myArray is {0}.", myType->myElementType );
else
Console::WriteLine( "myArray is not an array, pointer, or reference type." );
myType = gcnew MyTypeDelegator( myInt.GetType() );
// Determine whether myType is an array, pointer, reference type.
if ( myType->HasElementType )
Console::WriteLine( "The type of myInt is {0}.", myType->myElementType );
else
Console::WriteLine( "myInt is not an array, pointer, or reference type." );
}
catch ( Exception^ e )
{
Console::WriteLine( "Exception: {0}", e->Message );
}
}
import System.*;
import System.Reflection.*;
public class MyTypeDelegator extends TypeDelegator
{
public String myElementType = null;
private Type myType = null;
public MyTypeDelegator(Type myType)
{
super(myType);
this.myType = myType;
} //MyTypeDelegator
// Override Type.HasElementTypeImpl().
protected boolean HasElementTypeImpl()
{
// Determine whether the type is an array.
if (myType.get_IsArray()) {
myElementType = "array";
return true;
}
// Determine whether the type is a reference.
if (myType.get_IsByRef()) {
myElementType = "reference";
return true;
}
// Determine whether the type is a pointer.
if (myType.get_IsPointer()) {
myElementType = "pointer";
return true;
}
// Return false if the type is not a reference, array, or pointer type.
return false;
} //HasElementTypeImpl
} //MyTypeDelegator
public class Type_HasElementTypeImpl
{
public static void main(String[] args)
{
try {
int myInt = 0;
int myArray[] = new int[5];
MyTypeDelegator myType = new MyTypeDelegator(myArray.GetType());
// Determine whether myType is an array, pointer, reference type.
Console.WriteLine("\nDetermine whether a variable is an array, pointer,"
+ " or reference type.\n");
if (myType.get_HasElementType()) {
Console.WriteLine("The type of myArray is {0}.", myType.
myElementType);
}
else {
Console.WriteLine("myArray is not an array, pointer,"
+ "or reference type.");
}
myType = new MyTypeDelegator(((System.Int32)myInt).GetType());
// Determine whether myType is an array, pointer, reference type.
if (myType.get_HasElementType()) {
Console.WriteLine("The type of myInt is {0}.", myType.
myElementType);
}
else {
Console.WriteLine("myInt is not an array, pointer,"
+ " or reference type.");
}
}
catch (System.Exception e) {
Console.WriteLine("Exception: {0}", e.get_Message());
}
} //main
} //Type_HasElementTypeImpl
플랫폼
Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
.NET Framework에서 모든 플래폼의 모든 버전을 지원하지는 않습니다. 지원되는 버전의 목록은 시스템 요구 사항을 참조하십시오.
버전 정보
.NET Framework
2.0, 1.1, 1.0에서 지원
.NET Compact Framework
2.0, 1.0에서 지원