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

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DateTimeFormatInfo.SetAllDateTimePatterns 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。

DateTime 値を形式指定できるすべての標準パターンを設定します。

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

<ComVisibleAttribute(False)> _
Public Sub SetAllDateTimePatterns ( _
    patterns As String(), _
    format As Char _
)
Dim instance As DateTimeFormatInfo
Dim patterns As String()
Dim format As Char

instance.SetAllDateTimePatterns(patterns, format)
[ComVisibleAttribute(false)] 
public void SetAllDateTimePatterns (
    string[] patterns,
    char format
)
[ComVisibleAttribute(false)] 
public:
void SetAllDateTimePatterns (
    array<String^>^ patterns, 
    wchar_t format
)
/** @attribute ComVisibleAttribute(false) */ 
public void SetAllDateTimePatterns (
    String[] patterns, 
    char format
)
ComVisibleAttribute(false) 
public function SetAllDateTimePatterns (
    patterns : String[], 
    format : char
)

パラメータ

patterns

形式パターンの文字列配列。

format

patterns パラメータで指定されたパターンに関連付けられた標準の書式指定子文字。

解説解説
使用例使用例

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。

' 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"

*/
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バージョン情報バージョン情報
参照参照
関連項目
DateTimeFormatInfo クラス
DateTimeFormatInfo メンバ
System.Globalization 名前空間
GetAllDateTimePatterns



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