Array.GetUpperBound メソッドとは何？わかりやすく解説 Weblio辞書

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.NET Framework クラスライブラリリファレンス

索引トップ用語の索引ランキング

Array.GetUpperBound メソッド

Array 内の指定した次元の上限を取得します。

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

Visual Basic (宣言)

Public Function GetUpperBound ( _
    dimension As Integer _
) As Integer

Visual Basic (使用法)

Dim instance As Array
Dim dimension As Integer
Dim returnValue As Integer

returnValue = instance.GetUpperBound(dimension)

public int GetUpperBound (
    int dimension
)

C++

public:
int GetUpperBound (
    int dimension
)

public int GetUpperBound (
    int dimension
)

JScript

public function GetUpperBound (
    dimension : int
) : int

パラメータ

dimension: 上限を指定する Array の 0 から始まる次元。

戻り値
Array 内の指定した次元の上限。

例外

例外の種類	条件
IndexOutOfRangeException	dimension が 0 未満です。または dimension が Rank 以上です。

例外の種類

条件

IndexOutOfRangeException

dimension が 0 未満です。

または

dimension が Rank 以上です。

解説

GetUpperBound(0) は Array の最初の次元のインデックスの上限を返します。GetUpperBound(Rank - 1) は Array の最後の次元の上限を返します。

このメソッドは O(1) 操作です。

使用例

GetLowerBound と GetUpperBound を使用して 1 次元配列と多次元配列の 2 つの配列を初期化する方法を次のコード例に示します。

Visual Basic

Imports System
Imports Microsoft.VisualBasic

Public Class SamplesArray    
    
    Public Shared Sub Main()
        
        ' Creates a new one-dimensional Array of type Int32.
        Dim my1DIntArray As Array = Array.CreateInstance(GetType(Int32),
 5)
        
        ' Uses GetLowerBound and GetUpperBound in the for loop.
        Dim i As Integer
        For i = my1DIntArray.GetLowerBound(0) To
 my1DIntArray.GetUpperBound(0)
            my1DIntArray.SetValue(i + 1, i)
        Next i 
        ' Displays the bounds and values of the one-dimensional Array.
        Console.WriteLine("One-dimensional Array:")
        Console.WriteLine("Rank" + ControlChars.Tab
 + "Lower" _
           + ControlChars.Tab + "Upper")
        Console.WriteLine("{0}" + ControlChars.Tab
 + "{1}" _
           + ControlChars.Tab + "{2}", 0, my1DIntArray.GetLowerBound(0),
 _
           my1DIntArray.GetUpperBound(0))
        Console.WriteLine("Values:")
        PrintValues(my1DIntArray)
        Console.WriteLine()
        
        ' Creates a new three-dimensional Array of type Int32.
        Dim my3DIntArray As Array = _
           Array.CreateInstance(GetType(Int32), 2, 3, 4)
        
        ' Uses GetLowerBound and GetUpperBound in the for loop.
        Dim j, k As Integer
        For i = my3DIntArray.GetLowerBound(0) _
        To my3DIntArray.GetUpperBound(0)
            For j = my3DIntArray.GetLowerBound(1) _
            To my3DIntArray.GetUpperBound(1)
                For k = my3DIntArray.GetLowerBound(2) _
                To my3DIntArray.GetUpperBound(2)
                    my3DIntArray.SetValue(i * 100 + j * 10 + k, i, j, k)
                Next k
            Next j 
        Next i

        ' Displays the bounds and values of the multidimensional Array.
        Console.WriteLine("Multidimensional Array:")
        Console.WriteLine("Rank" + ControlChars.Tab
 + "Lower" _
           + ControlChars.Tab + "Upper")
        For i = 0 To my3DIntArray.Rank - 1
            Console.WriteLine("{0}" + ControlChars.Tab
 + "{1}" _
               + ControlChars.Tab + "{2}", i, my3DIntArray.GetLowerBound(i),
 _
               my3DIntArray.GetUpperBound(i))
        Next i
        Console.WriteLine("Values:")
        PrintValues(my3DIntArray)
    End Sub
    
    
    Public Shared Sub PrintValues(myArr
 As Array)
        Dim myEnumerator As System.Collections.IEnumerator
 = _
           myArr.GetEnumerator()
        Dim i As Integer
 = 0
        Dim cols As Integer
 = myArr.GetLength(myArr.Rank - 1)
        While myEnumerator.MoveNext()
            If i < cols Then
                i += 1
            Else
                Console.WriteLine()
                i = 1
            End If
            Console.Write(ControlChars.Tab + "{0}",
 myEnumerator.Current)
        End While
        Console.WriteLine()
    End Sub
End Class

' This code produces the following output.
' 
' One-dimensional Array:
' Rank    Lower    Upper
' 0    0    4
' Values:
'     1    2    3    4    5
' 
' Multidimensional Array:
' Rank    Lower    Upper
' 0    0    1
' 1    0    2
' 2    0    3
' Values:
'     0    1    2    3
'     10    11    12    13
'     20    21    22    23
'     100    101    102    103
'     110    111    112    113
'     120    121    122    123

 using System;
 public class SamplesArray  {
 
    public static void Main()
  {
 
       // Creates a new one-dimensional Array of type Int32.
       Array my1DIntArray = Array.CreateInstance( typeof(Int32), 5 );
 
       // Uses GetLowerBound and GetUpperBound in the for loop.
       for ( int i = my1DIntArray.GetLowerBound(0);
 i <= my1DIntArray.GetUpperBound(0); i++ )
          my1DIntArray.SetValue( i+1, i );
 
       // Displays the bounds and values of the one-dimensional Array.
       Console.WriteLine( "One-dimensional Array:" );
       Console.WriteLine( "Rank\tLower\tUpper" );
       Console.WriteLine( "{0}\t{1}\t{2}", 0, my1DIntArray.GetLowerBound(0),
 my1DIntArray.GetUpperBound(0) );
       Console.WriteLine( "Values:" );
       PrintValues( my1DIntArray );
       Console.WriteLine();
 
       // Creates a new three-dimensional Array of type Int32.
       Array my3DIntArray = Array.CreateInstance( typeof(Int32), 2, 3, 4 );
 
       // Uses GetLowerBound and GetUpperBound in the for loop.
       for ( int i = my3DIntArray.GetLowerBound(0);
 i <= my3DIntArray.GetUpperBound(0); i++ )
          for ( int j = my3DIntArray.GetLowerBound(1);
 j <= my3DIntArray.GetUpperBound(1); j++ )
             for ( int k = my3DIntArray.GetLowerBound(2);
 k <= my3DIntArray.GetUpperBound(2); k++ )  {
                my3DIntArray.SetValue( (i*100)+(j*10)+k, i, j, k );
             }
 
       // Displays the bounds and values of the multidimensional Array.
       Console.WriteLine( "Multidimensional Array:" );
       Console.WriteLine( "Rank\tLower\tUpper" );
       for ( int i = 0; i < my3DIntArray.Rank;
 i++ )
          Console.WriteLine( "{0}\t{1}\t{2}", i, my3DIntArray.GetLowerBound(i),
 my3DIntArray.GetUpperBound(i) );
       Console.WriteLine( "Values:" );
       PrintValues( my3DIntArray );
    }
 
 
    public static void PrintValues(
 Array myArr )  {
       System.Collections.IEnumerator myEnumerator = myArr.GetEnumerator();
       int i = 0;
       int cols = myArr.GetLength( myArr.Rank - 1 );
       while ( myEnumerator.MoveNext() )  {
          if ( i < cols )  {
             i++;
          } else  {
             Console.WriteLine();
             i = 1;
          }
          Console.Write( "\t{0}", myEnumerator.Current );
       }
       Console.WriteLine();
    }
 }
 /*
 This code produces the following output.
 
 One-dimensional Array:
 Rank    Lower    Upper
 0    0    4
 Values:
     1    2    3    4    5
 
 Multidimensional Array:
 Rank    Lower    Upper
 0    0    1
 1    0    2
 2    0    3
 Values:
     0    1    2    3
     10    11    12    13
     20    21    22    23
     100    101    102    103
     110    111    112    113
     120    121    122    123
*/

C++

using namespace System;
void PrintValues( Array^ myArr );
void main()
{
   // Creates a new one-dimensional Array instance of type Int32.
   Array^ my1DIntArray = Array::CreateInstance( Int32::typeid, 5 );

   // Uses GetLowerBound and GetUpperBound in the for loop.
   for ( int i = my1DIntArray->GetLowerBound(
 0 ); i <= my1DIntArray->GetUpperBound( 0 ); i++ )
      my1DIntArray->SetValue( i + 1, i );

   // Displays the bounds and values of the one-dimensional Array.
   Console::WriteLine(  "One-dimensional Array:" );
   Console::WriteLine(  "Rank\tLower\tUpper" );
   Console::WriteLine(  "{0}\t{1}\t{2}", nullptr, my1DIntArray->GetLowerBound(
 0 ), my1DIntArray->GetUpperBound( 0 ) );
   Console::WriteLine(  "Values:" );
   PrintValues( my1DIntArray );
   Console::WriteLine();

   // Creates a new three-dimensional Array instance of type Int32.
   Array^ my3DIntArray = Array::CreateInstance( Int32::typeid, 2, 3, 4 );

   // Uses GetLowerBound and GetUpperBound in the for loop.
   for ( int i = my3DIntArray->GetLowerBound(
 0 ); i <= my3DIntArray->GetUpperBound( 0 ); i++ )
      for ( int j = my3DIntArray->GetLowerBound(
 1 ); j <= my3DIntArray->GetUpperBound( 1 ); j++ )
         for ( int k = my3DIntArray->GetLowerBound(
 2 ); k <= my3DIntArray->GetUpperBound( 2 ); k++ )
         {
            my3DIntArray->SetValue( (i * 100) + (j * 10) + k, i, j, k );
         }

   // Displays the bounds and values of the multidimensional Array.
   Console::WriteLine(  "Multidimensional Array:" );
   Console::WriteLine(  "Rank\tLower\tUpper" );
   for ( int i = 0; i < my3DIntArray->Rank;
 i++ )
      Console::WriteLine(  "{0}\t{1}\t{2}", i, my3DIntArray->GetLowerBound(
 i ), my3DIntArray->GetUpperBound( i ) );
   Console::WriteLine(  "Values:" );
   PrintValues( my3DIntArray );
}

void PrintValues( Array^ myArr )
{
   System::Collections::IEnumerator^ myEnumerator = myArr->GetEnumerator();
   int i = 0;
   int cols = myArr->GetLength( myArr->Rank - 1 );
   while ( myEnumerator->MoveNext() )
   {
      if ( i < cols )
      {
         i++;
      }
      else
      {
         Console::WriteLine();
         i = 1;
      }

      Console::Write(  "\t{0}", myEnumerator->Current );
   }

   Console::WriteLine();
}

/*
 This code produces the following output.
 
One-dimensional Array:
Rank    Lower   Upper
0       0       4
Values:
        1       2       3       4       5

Multidimensional Array:
Rank    Lower   Upper
0       0       1
1       0       2
2       0       3
Values:
        0       1       2       3
        10      11      12      13
        20      21      22      23
        100     101     102     103
        110     111     112     113
        120     121     122     123
*/

import System.*;

public class SamplesArray
{
    public static void main(String[]
 args)
    {
        // Creates a new one-dimensional Array of type Int32.
        Array my1DIntArray = Array.CreateInstance(Int32.class.ToType(),
 5);
        // Uses GetLowerBound and GetUpperBound in the for loop.
        for (int i = my1DIntArray.GetLowerBound(0);
 i <= my1DIntArray.
            GetUpperBound(0); i++) {
            my1DIntArray.SetValue((Int32)(i + 1), i);
        }
        // Displays the bounds and values of the one-dimensional Array.
        Console.WriteLine("One-dimensional Array:");
        Console.WriteLine("Rank\tLower\tUpper");
        Console.WriteLine("{0}\t{1}\t{2}", (Int32)0, (Int32)my1DIntArray.
            GetLowerBound(0), (Int32)my1DIntArray.GetUpperBound(0));
        Console.WriteLine("Values:");
        PrintValues(my1DIntArray);
        Console.WriteLine();
        // Creates a new three-dimensional Array of type Int32.
        Array my3DIntArray = Array.CreateInstance(Int32.class.ToType(),
 2, 3, 4);
        // Uses GetLowerBound and GetUpperBound in the for loop.
        for (int i = my3DIntArray.GetLowerBound(0);
 i <= my3DIntArray.
            GetUpperBound(0); i++) {
            for (int j = my3DIntArray.GetLowerBound(1);
 j <= my3DIntArray.
                GetUpperBound(1); j++) {
                for (int k = my3DIntArray.GetLowerBound(2);
 k <= my3DIntArray.
                    GetUpperBound(2); k++) {
                    my3DIntArray.SetValue((Int32)(i * 100 + j * 10 + k), i, j, k);
                }
            }
        }  // Displays the bounds and values of the multidimensional
 Array.
        Console.WriteLine("Multidimensional Array:");
        Console.WriteLine("Rank\tLower\tUpper");
        for (int i = 0; i < my3DIntArray.get_Rank();
 i++) {
            Console.WriteLine("{0}\t{1}\t{2}", (Int32)i, (Int32)my3DIntArray.
                GetLowerBound(i), (Int32)my3DIntArray.GetUpperBound(i));
        }
        Console.WriteLine("Values:");
        PrintValues(my3DIntArray);
    } //main

    public static void PrintValues(Array
 myArr)
    {
        System.Collections.IEnumerator myEnumerator = myArr.GetEnumerator();
        int i = 0;
        int cols = myArr.GetLength(myArr.get_Rank() - 1);
        while (myEnumerator.MoveNext()) {
            if (i < cols) {
                i++;
            }
            else {
                Console.WriteLine();
                i = 1;
            }
            Console.Write("\t{0}", myEnumerator.get_Current());
        }
        Console.WriteLine();
    } //PrintValues
} //SamplesArray

/*
 This code produces the following output.
 
 One-dimensional Array:
 Rank    Lower    Upper
 0    0    4
 Values:
     1    2    3    4    5
 
 Multidimensional Array:
 Rank    Lower    Upper
 0    0    1
 1    0    2
 2    0    3
 Values:
     0    1    2    3
     10    11    12    13
     20    21    22    23
     100    101    102    103
     110    111    112    113
     120    121    122    123
*/

JScript

import System;

// Creates a new one-dimensional Array of type Int32.
var my1DIntArray : System.Array = System.Array.CreateInstance(
 Int32, 5 );

// Uses GetLowerBound and GetUpperBound in the for loop.
for ( var m : int = my1DIntArray.GetLowerBound(0);
 m <= my1DIntArray.GetUpperBound(0); m++ )
  my1DIntArray.SetValue( Int32(m+1), m );

// Displays the bounds and values of the one-dimensional Array.
Console.WriteLine( "One-dimensional Array:" );
Console.WriteLine( "Rank\tLower\tUpper" );
Console.WriteLine( "{0}\t{1}\t{2}", 0, my1DIntArray.GetLowerBound(0), my1DIntArray.GetUpperBound(0)
 );
Console.WriteLine( "Values:" );
PrintValues( my1DIntArray );
Console.WriteLine();

// Creates a new three-dimensional Array of type Int32.
var my3DIntArray : System.Array = System.Array.CreateInstance(
 Int32, 2, 3, 4 );

// Uses GetLowerBound and GetUpperBound in the for loop.
for ( var i : int = my3DIntArray.GetLowerBound(0);
 i <= my3DIntArray.GetUpperBound(0); i++ )
  for ( var j : int = my3DIntArray.GetLowerBound(1);
 j <= my3DIntArray.GetUpperBound(1); j++ )
     for ( var k : int =
 my3DIntArray.GetLowerBound(2); k <= my3DIntArray.GetUpperBound(2); k++ )  {
        my3DIntArray.SetValue( Int32((i*100)+(j*10)+k), i, j, k );
     }

// Displays the bounds and values of the multidimensional Array.
Console.WriteLine( "Multidimensional Array:" );
Console.WriteLine( "Rank\tLower\tUpper" );
for ( var l : int = 0; l
 < my3DIntArray.Rank; l++ )
  Console.WriteLine( "{0}\t{1}\t{2}", l, my3DIntArray.GetLowerBound(l),
 my3DIntArray.GetUpperBound(l) );
Console.WriteLine( "Values:" );
PrintValues( my3DIntArray );
 
 
function PrintValues( myArr : System.Array)  {
   var myEnumerator : System.Collections.IEnumerator  = myArr.GetEnumerator();
   var i : int = 0;
   var cols : int = myArr.GetLength( myArr.Rank
 - 1 );
   while ( myEnumerator.MoveNext() )  {
      if ( i < cols )  {
         i++;
      } else  {
         Console.WriteLine();
         i = 1;
      }
      Console.Write( "\t{0}", myEnumerator.Current );
   }
   Console.WriteLine();
}
 /*
 This code produces the following output.
 
 One-dimensional Array:
 Rank    Lower    Upper
 0    0    4
 Values:
     1    2    3    4    5
 
 Multidimensional Array:
 Rank    Lower    Upper
 0    0    1
 1    0    2
 2    0    3
 Values:
     0    1    2    3
     10    11    12    13
     20    21    22    23
     100    101    102    103
     110    111    112    113
     120    121    122    123
*/

プラットフォーム

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

開発プラットフォームの中には、.NET Framework によってサポートされていないバージョンがあります。サポートされているバージョンについては、「システム要件」を参照してください。

バージョン情報

.NET Framework
サポート対象 : 2.0、1.1、1.0
.NET Compact Framework
サポート対象 : 2.0、1.0

参照

関連項目
Array クラス
Array メンバ
System 名前空間
GetLowerBound
Rank

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Array.GetUpperBound メソッドとは？ わかりやすく解説

Array.GetUpperBound メソッド

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Array.GetUpperBound メソッドとは？わかりやすく解説