Convert.ToString メソッド (Int64, Int32)

2008-03-28

64 ビット符号付き整数の値を、指定した基数で等価の String 形式に変換します。

Overloads Public Shared Function ToString( _
   ByVal value As Long, _   ByVal toBase As Integer _) As String
[C#]
public static string ToString(longvalue,inttoBase);
[C++]
public: static String* ToString(__int64value,inttoBase);
[JScript]
public static function ToString(
   value : long,toBase : int) : String;

パラメータ

value
64 ビット符号付き整数。
toBase
戻り値の基数。これは 2、8、10、または 16 である必要があります。

戻り値

基数 toBase での value の String 形式。

例外

例外の種類	条件
ArgumentException	toBase が 2、8、10、または 16 ではありません。

使用例

[Visual Basic, C#, C++] ToString メソッドを使用し、このメソッドがサポートする基数に従って、複数の Int64 (64 ビット整数) を String に変換するコード例を次に示します。

 
' Example of the Convert.ToString( Long, Integer ) method.
Imports System
Imports Microsoft.VisualBasic

Module ConvertRadixLongDemo
    
    Sub RunToStringDemo( )

        Dim values as Long( ) = { _
            Long.MinValue, _
            -112233445566778899, _
            4294967296, _
            999999999999999999, _
            Long.MaxValue }
        Dim radices as Integer( ) = { 2, 8, 10, 16 }

        ' Iterate through the values array.
        Dim value as Long
        For Each value in values

            ' Iterate through the radices.
            Dim radix as Integer
            For Each radix in radices

                ' Convert a value with a radix.
                Dim valueString As String = _
                    Convert.ToString( value, radix )

                ' Display the results; use two lines, if necessary.
                If valueString.Length > 50 Then
                    Console.WriteLine( "{0,20} {1,3} " & _
                        vbCrLf & "          {2}", _
                        value, radix, valueString )
                Else
                    Console.WriteLine( "{0,20} {1,3}   {2}", _
                        value, radix, valueString )
                End If
            Next radix
        Next value
    End Sub 

    Sub Main()

        Console.WriteLine( _
            "This example of Convert.ToString( Long, Integer ) " & _ 
            "generates " & vbCrLf & "the following output. It " & _
            "converts several Long values to " & vbCrLf & "strings " & _
            "using the radixes supported by the method." ) 
        Console.WriteLine( vbCrLf & _
            "          Value      Radix     String" & vbCrLf & _
            "          -----      -----     ------" )

        RunToStringDemo( )

    End Sub
End Module 

' This example of Convert.ToString( Long, Integer ) generates
' the following output. It converts several Long values to
' strings using the radixes supported by the method.
' 
'           Value      Radix     String
'           -----      -----     ------
' -9223372036854775808   2
'           1000000000000000000000000000000000000000000000000000000000000000
' -9223372036854775808   8   1000000000000000000000
' -9223372036854775808  10   -9223372036854775808
' -9223372036854775808  16   8000000000000000
'  -112233445566778899   2
'           1111111001110001010001000100011010100001000100101111000111101101
'  -112233445566778899   8   1771612104324104570755
'  -112233445566778899  10   -112233445566778899
'  -112233445566778899  16   fe714446a112f1ed
'           4294967296   2   100000000000000000000000000000000
'           4294967296   8   40000000000
'           4294967296  10   4294967296
'           4294967296  16   100000000
'   999999999999999999   2
'           110111100000101101101011001110100111011000111111111111111111
'   999999999999999999   8   67405553164730777777
'   999999999999999999  10   999999999999999999
'   999999999999999999  16   de0b6b3a763ffff
'  9223372036854775807   2
'           111111111111111111111111111111111111111111111111111111111111111
'  9223372036854775807   8   777777777777777777777
'  9223372036854775807  10   9223372036854775807
'  9223372036854775807  16   7fffffffffffffff

[C#] 
// Example of the Convert.ToString( long, int ) method.
using System;

class ConvertRadixLongDemo
{
    static void RunToStringDemo( )
    {
        long[ ] values = {
            long.MinValue,
            -112233445566778899, 
            4294967296, 
            999999999999999999, 
            long.MaxValue };
        int[ ]  radices = { 2, 8, 10, 16 };

        // Iterate through the values array.
        foreach( long value in values )
        {
            // Iterate through the radices.
            foreach( int radix in radices )
            {
                // Convert a value with a radix.
                string valueString = 
                    Convert.ToString( value, radix );

                // Display the results; use two lines, if necessary.
                if( valueString.Length > 50 )
                    Console.WriteLine( 
                        "{0,20} {1,3} \n          {2}", 
                        value, radix, valueString );
                else
                    Console.WriteLine( "{0,20} {1,3}   {2}", 
                        value, radix, valueString );
            }
        }
    } 

    static void Main( )
    {
        Console.WriteLine(
            "This example of Convert.ToString( long, int ) " +
            "generates \nthe following output. It converts several " +
            "long values to \nstrings using the radixes supported " +
            "by the method." );
        Console.WriteLine( 
            "\n          Value      Radix     String" +
            "\n          -----      -----     ------" );

        RunToStringDemo( );
    } 
} 

/*
This example of Convert.ToString( long, int ) generates
the following output. It converts several long values to
strings using the radixes supported by the method.

          Value      Radix     String
          -----      -----     ------
-9223372036854775808   2
          1000000000000000000000000000000000000000000000000000000000000000
-9223372036854775808   8   1000000000000000000000
-9223372036854775808  10   -9223372036854775808
-9223372036854775808  16   8000000000000000
 -112233445566778899   2
          1111111001110001010001000100011010100001000100101111000111101101
 -112233445566778899   8   1771612104324104570755
 -112233445566778899  10   -112233445566778899
 -112233445566778899  16   fe714446a112f1ed
          4294967296   2   100000000000000000000000000000000
          4294967296   8   40000000000
          4294967296  10   4294967296
          4294967296  16   100000000
  999999999999999999   2
          110111100000101101101011001110100111011000111111111111111111
  999999999999999999   8   67405553164730777777
  999999999999999999  10   999999999999999999
  999999999999999999  16   de0b6b3a763ffff
 9223372036854775807   2
          111111111111111111111111111111111111111111111111111111111111111
 9223372036854775807   8   777777777777777777777
 9223372036854775807  10   9223372036854775807
 9223372036854775807  16   7fffffffffffffff
*/

[C++] 
// Example of the Convert::ToString( Int64, Int32 ) method.
#using <mscorlib.dll>
using namespace System;
using namespace System::Collections;

void RunToStringDemo( )
{
    __int64 values __gc [ ] = {
        Int64::MinValue, 
        -112233445566778899, 
        4294967296, 
        999999999999999999, 
        Int64::MaxValue };
    int  radices[ 4 ] = { 2, 8, 10, 16 };

    // Implement foreach( __int64 value in values ).
    IEnumerator*    myEnum = values->GetEnumerator( );
    while( myEnum->MoveNext( ) )
    {
       __int64 value = Convert::ToInt64( myEnum->Current );

        // Iterate through the radices.
        for( int i = 0; i < 4; i++ )
        {
            // Convert a value with a radix.
            int radix = radices[ i ];
            String* valueString = 
                Convert::ToString( value, radix );

            // Display the results; use two lines, if necessary.
            if( valueString->Length > 50 )
                Console::WriteLine( 
                    S"{0,20} {1,3} \n          {2}", 
                    __box( value ), __box( radix ), valueString );
            else
                Console::WriteLine( S"{0,20} {1,3}   {2}", 
                    __box( value ), __box( radix ), valueString );
        }
    }
} 

void main()
{
    Console::WriteLine(
        S"This example of Convert::ToString( __int64, int ) " 
        S"generates \nthe following output. It converts several " 
        S"__int64 values to \nstrings using the radixes supported " 
        S"by the method." );
    Console::WriteLine( 
        S"\n          Value      Radix     String" 
        S"\n          -----      -----     ------" );

    RunToStringDemo( );
} 

/*
This example of Convert::ToString( __int64, int ) generates
the following output. It converts several __int64 values to
strings using the radixes supported by the method.

          Value      Radix     String
          -----      -----     ------
-9223372036854775808   2
          1000000000000000000000000000000000000000000000000000000000000000
-9223372036854775808   8   1000000000000000000000
-9223372036854775808  10   -9223372036854775808
-9223372036854775808  16   8000000000000000
 -112233445566778899   2
          1111111001110001010001000100011010100001000100101111000111101101
 -112233445566778899   8   1771612104324104570755
 -112233445566778899  10   -112233445566778899
 -112233445566778899  16   fe714446a112f1ed
          4294967296   2   100000000000000000000000000000000
          4294967296   8   40000000000
          4294967296  10   4294967296
          4294967296  16   100000000
  999999999999999999   2
          110111100000101101101011001110100111011000111111111111111111
  999999999999999999   8   67405553164730777777
  999999999999999999  10   999999999999999999
  999999999999999999  16   de0b6b3a763ffff
 9223372036854775807   2
          111111111111111111111111111111111111111111111111111111111111111
 9223372036854775807   8   777777777777777777777
 9223372036854775807  10   9223372036854775807
 9223372036854775807  16   7fffffffffffffff
*/

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必要条件

プラットフォーム: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 ファミリ, .NET Compact Framework - Windows CE .NET

参照

Convert クラス | Convert メンバ | System 名前空間 | Convert.ToString オーバーロードの一覧

次の方法で共有

Convert.ToString メソッド (Int64, Int32)

パラメータ

戻り値

例外

使用例

必要条件

参照

その他のリソース