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

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DateTimeFormatInfo.GetShortestDayName 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。

現在の DateTimeFormatInfo オブジェクトに関連付けられた、指定した曜日の最も短い省略名を取得します。

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

Visual Basic (宣言)

<ComVisibleAttribute(False)> _
Public Function GetShortestDayName ( _
    dayOfWeek As DayOfWeek _
) As String

Visual Basic (使用法)

Dim instance As DateTimeFormatInfo
Dim dayOfWeek As DayOfWeek
Dim returnValue As String

returnValue = instance.GetShortestDayName(dayOfWeek)

[ComVisibleAttribute(false)] 
public string GetShortestDayName (
    DayOfWeek dayOfWeek
)

C++

[ComVisibleAttribute(false)] 
public:
String^ GetShortestDayName (
    DayOfWeek dayOfWeek
)

/** @attribute ComVisibleAttribute(false) */ 
public String GetShortestDayName (
    DayOfWeek dayOfWeek
)

JScript

ComVisibleAttribute(false) 
public function GetShortestDayName (
    dayOfWeek : DayOfWeek
) : String

パラメータ

dayOfWeek: DayOfWeek 値の 1 つ。

戻り値
dayOfWeek パラメータに対応する週の省略名。

使用例

日時の形式パターン、ネイティブな暦名、および月と曜日の完全名と省略名を指定する複数のメソッドとプロパティのコード例を次に示します。

Visual Basic

' This code example demonstrates the DateTimeFormatInfo 
' MonthGenitiveNames, AbbreviatedMonthGenitiveNames, 
' ShortestDayNames, and NativeCalendarName properties, and
' the GetShortestDayName() and SetAllDateTimePatterns() methods.

Imports System
Imports System.Globalization

Class Sample
    Public Shared Sub Main()
 
        Dim myDateTimePatterns() As String
 = {"MM/dd/yy", "MM/dd/yyyy"}
        Dim name As String
 = ""
        
        ' Get the en-US culture.
        Dim ci As New CultureInfo("en-US")
        ' Get the DateTimeFormatInfo for the en-US culture.
        Dim dtfi As DateTimeFormatInfo = ci.DateTimeFormat
        
        ' Display the effective culture.
        Console.WriteLine("This code example uses the {0} culture.",
 ci.Name)
        
        ' Display the native calendar name.    
        Console.WriteLine(vbCrLf & "NativeCalendarName...")
        Console.WriteLine("""{0}""",
 dtfi.NativeCalendarName)
        
        ' Display month genitive names.
        Console.WriteLine(vbCrLf & "MonthGenitiveNames...")
        For Each name In
 dtfi.MonthGenitiveNames
            Console.WriteLine("""{0}""",
 name)
        Next name
        
        ' Display abbreviated month genitive names.
        Console.WriteLine(vbCrLf & "AbbreviatedMonthGenitiveNames...")
        For Each name In
 dtfi.AbbreviatedMonthGenitiveNames
            Console.WriteLine("""{0}""",
 name)
        Next name
        
        ' Display shortest day names.
        Console.WriteLine(vbCrLf & "ShortestDayNames...")
        For Each name In
 dtfi.ShortestDayNames
            Console.WriteLine("""{0}""",
 name)
        Next name
        
        ' Display shortest day name for a particular day of the week.
        Console.WriteLine(vbCrLf & "GetShortestDayName(DayOfWeek.Sunday)...")
        Console.WriteLine("""{0}""",
 dtfi.GetShortestDayName(DayOfWeek.Sunday))
        
        ' Display the initial DateTime format patterns for the 'd' format
 specifier.
        Console.WriteLine(vbCrLf & "Initial DateTime format
 patterns for " & _
                          "the 'd' format specifier...")
        For Each name In
 dtfi.GetAllDateTimePatterns("d"c)
            Console.WriteLine("""{0}""",
 name)
        Next name
        
        ' Change the initial DateTime format patterns for the 'd' DateTime
 format specifier.
        Console.WriteLine(vbCrLf & "Change the initial DateTime
 format patterns for the " & _
                          vbCrLf & "'d' format specifier to
 my format patterns...")
        dtfi.SetAllDateTimePatterns(myDateTimePatterns, "d"c)
        
        ' Display the new DateTime format patterns for the 'd' format
 specifier.
        Console.WriteLine(vbCrLf & _
                          "New DateTime format patterns for
 the 'd' format specifier...")
        For Each name In
 dtfi.GetAllDateTimePatterns("d"c)
            Console.WriteLine("""{0}""",
 name)
        Next name
    
    End Sub 'Main
End Class 'Sample
'
'This code example produces the following results:
'
'This code example uses the en-US culture.
'
'NativeCalendarName...
'"Gregorian Calendar"
'
'MonthGenitiveNames...
'"January"
'"February"
'"March"
'"April"
'"May"
'"June"
'"July"
'"August"
'"September"
'"October"
'"November"
'"December"
'""
'
'AbbreviatedMonthGenitiveNames...
'"Jan"
'"Feb"
'"Mar"
'"Apr"
'"May"
'"Jun"
'"Jul"
'"Aug"
'"Sep"
'"Oct"
'"Nov"
'"Dec"
'""
'
'ShortestDayNames...
'"Su"
'"Mo"
'"Tu"
'"We"
'"Th"
'"Fr"
'"Sa"
'
'GetShortestDayName(DayOfWeek.Sunday)...
'"Su"
'
'Initial DateTime format patterns for the 'd' format specifier...
'"M/d/yyyy"
'"M/d/yy"
'"MM/dd/yy"
'"MM/dd/yyyy"
'"yy/MM/dd"
'"yyyy-MM-dd"
'"dd-MMM-yy"
'
'Change the initial DateTime format patterns for the
''d' format specifier to my format patterns...
'
'New DateTime format patterns for the 'd' format specifier...
'"MM/dd/yy"
'"MM/dd/yyyy"
'

// This code example demonstrates the DateTimeFormatInfo 
// MonthGenitiveNames, AbbreviatedMonthGenitiveNames, 
// ShortestDayNames, and NativeCalendarName properties, and
// the GetShortestDayName() and SetAllDateTimePatterns() methods.

using System;
using System.Globalization;

class Sample 
{
    public static void Main()
 
    {
    string[] myDateTimePatterns = new string[]
 {"MM/dd/yy", "MM/dd/yyyy"};

// Get the en-US culture.
    CultureInfo ci = new CultureInfo("en-US");
// Get the DateTimeFormatInfo for the en-US culture.
    DateTimeFormatInfo dtfi = ci.DateTimeFormat;

// Display the effective culture.
    Console.WriteLine("This code example uses the {0} culture.", ci.Name);

// Display the native calendar name.    
    Console.WriteLine("\nNativeCalendarName...");
    Console.WriteLine("\"{0}\"", dtfi.NativeCalendarName);

// Display month genitive names.
    Console.WriteLine("\nMonthGenitiveNames...");
    foreach (string name in
 dtfi.MonthGenitiveNames) 
    {
    Console.WriteLine("\"{0}\"", name);
    }

// Display abbreviated month genitive names.
    Console.WriteLine("\nAbbreviatedMonthGenitiveNames...");
    foreach (string name in
 dtfi.AbbreviatedMonthGenitiveNames) 
    {
    Console.WriteLine("\"{0}\"", name);
    }

// Display shortest day names.
    Console.WriteLine("\nShortestDayNames...");
    foreach (string name in
 dtfi.ShortestDayNames) 
    {
    Console.WriteLine("\"{0}\"", name);
    }

// Display shortest day name for a particular day of the week.
    Console.WriteLine("\nGetShortestDayName(DayOfWeek.Sunday)...");
    Console.WriteLine("\"{0}\"", dtfi.GetShortestDayName(DayOfWeek.Sunday));

// Display the initial DateTime format patterns for the 'd' format specifier.
    Console.WriteLine("\nInitial DateTime format patterns for
 the 'd' format specifier...");
    foreach (string name in
 dtfi.GetAllDateTimePatterns('d')) 
    {
    Console.WriteLine("\"{0}\"", name);
    }

// Change the initial DateTime format patterns for the 'd' DateTime
 format specifier.
    Console.WriteLine("\nChange the initial DateTime format patterns for
 the \n" +
                      "'d' format specifier to my format patterns...");
    dtfi.SetAllDateTimePatterns(myDateTimePatterns, 'd');

// Display the new DateTime format patterns for the 'd' format specifier.
    Console.WriteLine("\nNew DateTime format patterns for
 the 'd' format specifier...");
    foreach (string name in
 dtfi.GetAllDateTimePatterns('d')) 
    {
    Console.WriteLine("\"{0}\"", name);
    }
    }
}
/*
This code example produces the following results:

This code example uses the en-US culture.

NativeCalendarName...
"Gregorian Calendar"

MonthGenitiveNames...
"January"
"February"
"March"
"April"
"May"
"June"
"July"
"August"
"September"
"October"
"November"
"December"
""

AbbreviatedMonthGenitiveNames...
"Jan"
"Feb"
"Mar"
"Apr"
"May"
"Jun"
"Jul"
"Aug"
"Sep"
"Oct"
"Nov"
"Dec"
""

ShortestDayNames...
"Su"
"Mo"
"Tu"
"We"
"Th"
"Fr"
"Sa"

GetShortestDayName(DayOfWeek.Sunday)...
"Su"

Initial DateTime format patterns for the 'd' format specifier...
"M/d/yyyy"
"M/d/yy"
"MM/dd/yy"
"MM/dd/yyyy"
"yy/MM/dd"
"yyyy-MM-dd"
"dd-MMM-yy"

Change the initial DateTime format patterns for the
'd' format specifier to my format patterns...

New DateTime format patterns for the 'd' format specifier...
"MM/dd/yy"
"MM/dd/yyyy"

*/

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

参照

関連項目
DateTimeFormatInfo クラス
DateTimeFormatInfo メンバ
System.Globalization 名前空間

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DateTimeFormatInfo.GetShortestDayName メソッドとは？ わかりやすく解説

DateTimeFormatInfo.GetShortestDayName メソッド

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DateTimeFormatInfo.GetShortestDayName メソッドとは？わかりやすく解説