Type.MakeByRefType メソッドとは? わかりやすく解説

Weblio 辞書 > コンピュータ > .NET Framework クラス ライブラリ リファレンス > Type.MakeByRefType メソッドの意味・解説 

Type.MakeByRefType メソッド

メモ : このメソッドは、.NET Framework version 2.0 で新しく追加されたものです。

ref パラメータ (Visual Basic の場合は ByRef) として渡されるときに現在の型を表す Type オブジェクトを返します。

名前空間: System
アセンブリ: mscorlib (mscorlib.dll 内)
構文構文

Public Overridable Function
 MakeByRefType As Type
public virtual Type MakeByRefType ()
public:
virtual Type^ MakeByRefType ()
public Type MakeByRefType ()
public function MakeByRefType () : Type

戻り値
ref パラメータ (Visual Basic の場合は ByRef) として渡されるときに現在の型を表す Type オブジェクト。

解説解説
使用例使用例

Test クラスの配列、ref (Visual Basic の場合は ByRef)、およびポインタ型を作成するコード例を次に示します。

Imports System
Imports System.Reflection
Imports Microsoft.VisualBasic

Public Class Example
    Public Shared Sub Main()
        ' Create a Type object that represents a one-dimensional
        ' array of Example objects.
        Dim t As Type = GetType(Example).MakeArrayType()
        Console.WriteLine(vbCrLf & "Array of Example: "
 & t.ToString())

        ' Create a Type object that represents a two-dimensional
        ' array of Example objects.
        t = GetType(Example).MakeArrayType(2)
        Console.WriteLine(vbCrLf & "Two-dimensional array
 of Example: " & t.ToString())

        ' Demonstrate an exception when an invalid array rank is
        ' specified.
        Try
            t = GetType(Example).MakeArrayType(-1)
        Catch ex As Exception
            Console.WriteLine(vbCrLf & ex.ToString())
        End Try

        ' Create a Type object that represents a ByRef parameter
        ' of type Example.
        t = GetType(Example).MakeByRefType()
        Console.WriteLine(vbCrLf & "ByRef Example: "
 & t.ToString())

        ' Get a Type object representing the Example class, a
        ' MethodInfo representing the "Test" method, a ParameterInfo
        ' representing the parameter of type Example, and finally
        ' a Type object representing the type of this ByRef parameter.
        ' Compare this Type object with the Type object created using
        ' MakeByRefType.
        Dim t2 As Type = GetType(Example)
        Dim mi As MethodInfo = t2.GetMethod("Test")
        Dim pi As ParameterInfo = mi.GetParameters()(0)
        Dim pt As Type = pi.ParameterType
        Console.WriteLine("Are the ByRef types equal? "
 & (t Is pt))

        ' Create a Type object that represents a pointer to an
        ' Example object.
        t = GetType(Example).MakePointerType()
        Console.WriteLine(vbCrLf & "Pointer to Example: "
 & t.ToString())
    End Sub

    ' A sample method with a ByRef parameter.
    '
    Public Sub Test(ByRef
 e As Example)
    End Sub
End Class

' This example produces output similar to the following:
'
'Array of Example: Example[]
'
'Two-dimensional array of Example: Example[,]
'
'System.IndexOutOfRangeException: Index was outside the bounds of the
 array.
'   at System.RuntimeType.MakeArrayType(Int32 rank) in c:\vbl\ndp\clr\src\BCL\System\RtType.cs:line
 2999
'   at Example.Main()
'
'ByRef Example: Example&
'Are the ByRef types equal? True
'
'Pointer to Example: Example*
using System;
using System.Reflection;

public class Example
{
    public static void Main()
    {
        // Create a Type object that represents a one-dimensional
        // array of Example objects.
        Type t = typeof(Example).MakeArrayType();
        Console.WriteLine("\r\nArray of Example: {0}", t);

        // Create a Type object that represents a two-dimensional
        // array of Example objects.
        t = typeof(Example).MakeArrayType(2);
        Console.WriteLine("\r\nTwo-dimensional array of Example: {0}",
 t);

        // Demonstrate an exception when an invalid array rank is
        // specified.
        try
        {
            t = typeof(Example).MakeArrayType(-1);
        }
        catch(Exception ex)
        {
            Console.WriteLine("\r\n{0}", ex);
        }

        // Create a Type object that represents a ByRef parameter
        // of type Example.
        t = typeof(Example).MakeByRefType();
        Console.WriteLine("\r\nByRef Example: {0}", t);

        // Get a Type object representing the Example class, a
        // MethodInfo representing the "Test" method, a ParameterInfo
        // representing the parameter of type Example, and finally
        // a Type object representing the type of this ByRef parameter.
        // Compare this Type object with the Type object created using
        // MakeByRefType.
        Type t2 = typeof(Example);
        MethodInfo mi = t2.GetMethod("Test");
        ParameterInfo pi = mi.GetParameters()[0];
        Type pt = pi.ParameterType;
        Console.WriteLine("Are the ByRef types equal? {0}", (t == pt));

        // Create a Type object that represents a pointer to an
        // Example object.
        t = typeof(Example).MakePointerType();
        Console.WriteLine("\r\nPointer to Example: {0}", t);
    }

    // A sample method with a ByRef parameter.
    //
    public void Test(ref Example e)
    {
    }
}

/* This example produces output similar to the following:

Array of Example: Example[]

Two-dimensional array of Example: Example[,]

System.IndexOutOfRangeException: Index was outside the bounds of the array.
   at System.RuntimeType.MakeArrayType(Int32 rank) in c:\vbl\ndp\clr\src\BCL\System\RtType.cs:line
 2999
   at Example.Main()

ByRef Example: Example&
Are the ByRef types equal? True

Pointer to Example: Example*

 */
using namespace System;
using namespace System::Reflection;

public ref class Example
{
public:
   static void Main()
   {
      // Create a Type object that represents a one-dimensional
      // array of Example objects.
      Type^ t = Example::typeid->MakeArrayType();
      Console::WriteLine( L"\r\nArray of Example: {0}", t );
      
      // Create a Type object that represents a two-dimensional
      // array of Example objects.
      t = Example::typeid->MakeArrayType( 2 );
      Console::WriteLine( L"\r\nTwo-dimensional array of Example: {0}",
 t );
      
      // Demonstrate an exception when an invalid array rank is
      // specified.
      try
      {
         t = Example::typeid->MakeArrayType(  -1 );
      }
      catch ( Exception^ ex ) 
      {
         Console::WriteLine( L"\r\n{0}", ex );
      }
      
      // Create a Type object that represents a ByRef parameter
      // of type Example.
      t = Example::typeid->MakeByRefType();
      Console::WriteLine( L"\r\nByRef Example: {0}", t );
      
      // Get a Type object representing the Example class, a
      // MethodInfo representing the "Test" method, a ParameterInfo
      // representing the parameter of type Example, and finally
      // a Type object representing the type of this ByRef parameter.
      // Compare this Type object with the Type object created using
      // MakeByRefType.
      Type^ t2 = Example::typeid;
      MethodInfo^ mi = t2->GetMethod( L"Test" );
      ParameterInfo^ pi = mi->GetParameters()[ 0 ];
      Type^ pt = pi->ParameterType;
      Console::WriteLine( L"Are the ByRef types equal? {0}", (t == pt)
 );
      
      // Create a Type object that represents a pointer to an
      // Example object.
      t = Example::typeid->MakePointerType();
      Console::WriteLine( L"\r\nPointer to Example: {0}", t );
   }

   // A sample method with a ByRef parameter.
   //
   void Test( interior_ptr<Example^> /*e*/ )
   {
   }
};

int main()
{
   Example::Main();
}

/* This example produces output similar to the following:

Array of Example: Example[]

Two-dimensional array of Example: Example[,]

System.IndexOutOfRangeException: Index was outside the bounds of the array.
   at System.RuntimeType.MakeArrayType(Int32 rank) in c:\vbl\ndp\clr\src\BCL\System\RtType.cs:line
 2999
   at Example.Main()

ByRef Example: Example&
Are the ByRef types equal? True

Pointer to Example: Example*

 */
import System.*;
import System.Reflection.*;

public class Example
{
    public static void main(String[]
 args)
    {
        // Create a Type object that represents a one-dimensional
        // array of Example objects.
        Type t = Example.class.ToType().MakeArrayType();
        Console.WriteLine("\r\nArray of Example: {0}", t);
        // Create a Type object that represents a two-dimensional
        // array of Example objects.
        t = Example.class.ToType().MakeArrayType(2);
        Console.WriteLine("\r\nTwo-dimensional array of Example: {0}",
 t);
        // Demonstrate an exception when an invalid array rank is
        // specified.
        try {
            t = Example.class.ToType().MakeArrayType(-1);
        }
        catch (System.Exception ex) {
            Console.WriteLine("\r\n{0}", ex);
        }
        // Create a Type object that represents a ByRef parameter
        // of type Example.
        t = Example.class.ToType().MakeByRefType();
        Console.WriteLine("\r\nByRef Example: {0}", t);
        // Get a Type object representing the Example class, a
        // MethodInfo representing the "Test" method, a ParameterInfo
        // representing the parameter of type Example, and finally
        // a Type object representing the type of this ByRef parameter.
        // Compare this Type object with the Type object created using
        // MakeByRefType.
        Type t2 = Example.class.ToType();
        MethodInfo mi = t2.GetMethod("Test");
        ParameterInfo pi = mi.GetParameters()[0];
        Type pt = pi.get_ParameterType();
        Console.WriteLine("Are the ByRef types equal? {0}", new
 
            Boolean(t == pt));
        // Create a Type object that represents a pointer to an
        // Example object.
        t = Example.class.ToType().MakePointerType();
        Console.WriteLine("\r\nPointer to Example: {0}", t);
    } //main

    // A sample method with a ByRef parameter.
    //
    public void Test(Example e)
    {
    } //Test
} //Example

/* This example produces output similar to the following:

Array of Example: Example[]

Two-dimensional array of Example: Example[,]

System.IndexOutOfRangeException: Index was outside the bounds of the array.
   at System.RuntimeType.MakeArrayType(Int32 rank) in c:\vbl\ndp\clr\src\BCL\
   System\RtType.jsl:line 2999
   at Example.main()

ByRef Example: Example&
Are the ByRef types equal? false

Pointer to Example: Example*

 */
プラットフォームプラットフォーム
バージョン情報バージョン情報
参照参照



英和和英テキスト翻訳

英語⇒日本語日本語⇒英語

辞書ショートカット

すべての辞書の索引

「Type.MakeByRefType メソッド」の関連用語

Type.MakeByRefType メソッドのお隣キーワード
検索ランキング

   

英語⇒日本語
日本語⇒英語
   



Type.MakeByRefType メソッドのページの著作権

   
日本マイクロソフト株式会社日本マイクロソフト株式会社
© 2026 Microsoft.All rights reserved.

©2026 GRAS Group, Inc.RSS