String.ToUpper String.ToUpper String.ToUpper String.ToUpper Method

Definizione

Restituisce una copia di questa stringa convertita in caratteri maiuscoli.Returns a copy of this string converted to uppercase.

Overload

ToUpper(CultureInfo) ToUpper(CultureInfo) ToUpper(CultureInfo) ToUpper(CultureInfo)

Restituisce una copia di questa stringa convertita in caratteri maiuscoli, usando le regole relative all'utilizzo di maiuscole e minuscole proprie delle impostazioni cultura specificate.Returns a copy of this string converted to uppercase, using the casing rules of the specified culture.

ToUpper() ToUpper() ToUpper() ToUpper()

Restituisce una copia di questa stringa convertita in caratteri maiuscoli.Returns a copy of this string converted to uppercase.

ToUpper(CultureInfo) ToUpper(CultureInfo) ToUpper(CultureInfo) ToUpper(CultureInfo)

Restituisce una copia di questa stringa convertita in caratteri maiuscoli, usando le regole relative all'utilizzo di maiuscole e minuscole proprie delle impostazioni cultura specificate.Returns a copy of this string converted to uppercase, using the casing rules of the specified culture.

public:
 System::String ^ ToUpper(System::Globalization::CultureInfo ^ culture);
public string ToUpper (System.Globalization.CultureInfo culture);
member this.ToUpper : System.Globalization.CultureInfo -> string
Public Function ToUpper (culture As CultureInfo) As String

Parametri

culture
CultureInfo CultureInfo CultureInfo CultureInfo

Oggetto che fornisce le regole specifiche delle impostazioni cultura sull'uso di maiuscole e minuscole.An object that supplies culture-specific casing rules.

Restituisce

Equivalente in caratteri maiuscoli della stringa corrente.The uppercase equivalent of the current string.

Eccezioni

Esempi

Nell'esempio seguente converte una stringa di caratteri minuscoli in due stringhe di caratteri maiuscoli mediante le impostazioni cultura inglese degli Stati e turco di Turchia, quindi confronta le stringhe in maiuscolo.The following example converts a string of lowercase characters to two strings of uppercase characters using the English-United States and Turkish-Turkey cultures, then compares the uppercase strings. Le stringhe in maiuscolo sono identiche ad eccezione del fatto che per ogni occorrenza di Unicode LATINO lettera maiuscola ricerca per categorie in un'unica stringa, l'altra stringa contiene ALFABETO LATINO I con punto precedente.The uppercase strings are identical except that for each occurrence of the Unicode LATIN CAPITAL LETTER I in one string, the other string contains LATIN CAPITAL LETTER I WITH DOT ABOVE.

using System;
using System.Globalization;

class Example 
{
    public static void Main() 
    {
       string str1 = "indigo";
       string str2, str3;
   
       // str2 is an uppercase copy of str1, using English-United States culture.
       str2 = str1.ToUpper(new CultureInfo("en-US", false));
   
       // str3 is an uppercase copy of str1, using Turkish-Turkey culture.
       str3 = str1.ToUpper(new CultureInfo("tr-TR", false));
   
       // Compare the code points and compare the uppercase strings.
       ShowCodePoints("str1", str1);
       ShowCodePoints("str2", str2);
       ShowCodePoints("str3", str3);
       Console.WriteLine("str2 is {0} to str3.", 
            String.CompareOrdinal(str2, str3) == 0 ? "equal" : "not equal");
    }

    public static void ShowCodePoints(string varName, string s)
    {
       Console.Write("{0} = {1}: ", varName, s);
       foreach (ushort u in s)
         Console.Write("{0:x4} ", u);
       Console.WriteLine();
    }
}
// This example displays the following output:
//       str1 = indigo: 0069 006e 0064 0069 0067 006f
//       str2 = INDIGO: 0049 004e 0044 0049 0047 004f
//       str3 = INDIGO: 0130 004e 0044 0130 0047 004f
//       str2 is not equal to str3.
Imports System.Globalization

Public Module Example
   Public Sub Main()
      Dim str1 As String = "indigo"
      Dim str2, str3 As String
      
      ' str2 is an uppercase copy of str1, using English-United States culture.
      str2 = str1.ToUpper(New CultureInfo("en-US", False))
      
      ' str3 is an uppercase copy of str1, using Turkish-Turkey culture.
      str3 = str1.ToUpper(New CultureInfo("tr-TR", False))
      
      ' Compare the code points and compare the uppercase strings.
      ShowCodePoints("str1", str1)
      ShowCodePoints("str2", str2)
      ShowCodePoints("str3", str3)
      Console.WriteLine("str2 is {0} to str3.", _
                        IIf(String.CompareOrdinal(str2, str3) = 0, "equal", "not equal"))
   End Sub
   
   Public Sub ShowCodePoints(varName As String, s As String)
      Console.Write("{0} = {1}: ", varName, s)
      For Each c In s
         Console.Write("{0:X4} ", AscW(c))
      Next
      Console.WriteLine() 
   End Sub 
End Module
' The example displays the following output:
'       str1 = indigo: 0069 006E 0064 0069 0067 006F
'       str2 = INDIGO: 0049 004E 0044 0049 0047 004F
'       str3 = İNDİGO: 0130 004E 0044 0130 0047 004F
'       str2 is not equal to str3.

Commenti

Le regole delle impostazioni cultura specificate per il culture parametro determinano il modo nel caso di una stringa vengono modificati.The casing rules of the culture specified by the culture parameter determine the way the case of a string is changed.

Nota

Questo metodo non modifica il valore dell'istanza corrente.This method does not modify the value of the current instance. Al contrario, restituisce una nuova stringa in cui tutti i caratteri nell'istanza corrente sono stati convertiti in caratteri maiuscoli.Instead, it returns a new string in which all characters in the current instance are converted to uppercase.

Considerazioni sulla sicurezzaSecurity Considerations

Se si passa il ToUpper(CultureInfo) metodo una CultureInfo oggetto diverso da CultureInfo.InvariantCulture, l'operazione di maiuscole e minuscole per considerare le regole specifiche delle impostazioni cultura.If you pass the ToUpper(CultureInfo) method a CultureInfo object other than CultureInfo.InvariantCulture, the casing operation will take culture-specific rules into account. Se è necessaria la versione maiuscola o minuscola di un identificatore di sistema operativo, ad esempio un nome file, named pipe o una chiave del Registro di sistema, utilizzare il ToLowerInvariant o ToUpperInvariant (metodo).If you need the lowercase or uppercase version of an operating system identifier, such as a file name, named pipe, or registry key, use the ToLowerInvariant or ToUpperInvariant method. Ciò produce lo stesso risultato in tutte le impostazioni cultura ed esegue in modo più efficiente.This produces the same result in every culture and performs more efficiently.

Vedi anche

ToUpper() ToUpper() ToUpper() ToUpper()

Restituisce una copia di questa stringa convertita in caratteri maiuscoli.Returns a copy of this string converted to uppercase.

public:
 System::String ^ ToUpper();
public string ToUpper ();
member this.ToUpper : unit -> string
Public Function ToUpper () As String

Restituisce

Equivalente in caratteri maiuscoli della stringa corrente.The uppercase equivalent of the current string.

Esempi

L'esempio seguente chiama il ToUpper metodo per convertire una serie di stringhe solo carattere che contengono ogni carattere nei set di caratteri esteso latino di base, Supplemento latino 1 e latina.The following example calls the ToUpper method to convert a series of one-character strings that contain each character in the Basic Latin, Latin-1 Supplement, and Latin Extended-A character sets. Visualizza quindi ogni stringa con caratteri maiuscoli sono diverso dal carattere minuscolo.It then displays each string whose uppercase character is different from its lowercase character.

using namespace System;

void main()
{
   int n = 0;
   for (int ctr = 0x20; ctr <= 0x017F; ctr++) {
      String^ string1 = Convert::ToChar(ctr).ToString();
      String^ upperString = string1->ToUpper();
      if (string1 != upperString) {
         Console::Write(L"{0} (\u+{1}) --> {2} (\u+{3})         ",
                       string1, 
                       Convert::ToUInt16(string1[0]).ToString("X4"),
                       upperString, 
                       Convert::ToUInt16(upperString[0]).ToString("X4"));
         n++;
         if (n % 2 == 0) Console::WriteLine();
      }
   } 
}
// The example displays the following output:
//    a (\u+0061) --> A (\u+0041)         b (\u+0062) --> B (\u+0042)
//    c (\u+0063) --> C (\u+0043)         d (\u+0064) --> D (\u+0044)
//    e (\u+0065) --> E (\u+0045)         f (\u+0066) --> F (\u+0046)
//    g (\u+0067) --> G (\u+0047)         h (\u+0068) --> H (\u+0048)
//    i (\u+0069) --> I (\u+0049)         j (\u+006A) --> J (\u+004A)
//    k (\u+006B) --> K (\u+004B)         l (\u+006C) --> L (\u+004C)
//    m (\u+006D) --> M (\u+004D)         n (\u+006E) --> N (\u+004E)
//    o (\u+006F) --> O (\u+004F)         p (\u+0070) --> P (\u+0050)
//    q (\u+0071) --> Q (\u+0051)         r (\u+0072) --> R (\u+0052)
//    s (\u+0073) --> S (\u+0053)         t (\u+0074) --> T (\u+0054)
//    u (\u+0075) --> U (\u+0055)         v (\u+0076) --> V (\u+0056)
//    w (\u+0077) --> W (\u+0057)         x (\u+0078) --> X (\u+0058)
//    y (\u+0079) --> Y (\u+0059)         z (\u+007A) --> Z (\u+005A)
//    à (\u+00E0) --> À (\u+00C0)         á (\u+00E1) --> Á (\u+00C1)
//    â (\u+00E2) --> Â (\u+00C2)         ã (\u+00E3) --> Ã (\u+00C3)
//    ä (\u+00E4) --> Ä (\u+00C4)         å (\u+00E5) --> Å (\u+00C5)
//    æ (\u+00E6) --> Æ (\u+00C6)         ç (\u+00E7) --> Ç (\u+00C7)
//    è (\u+00E8) --> È (\u+00C8)         é (\u+00E9) --> É (\u+00C9)
//    ê (\u+00EA) --> Ê (\u+00CA)         ë (\u+00EB) --> Ë (\u+00CB)
//    ì (\u+00EC) --> Ì (\u+00CC)         í (\u+00ED) --> Í (\u+00CD)
//    î (\u+00EE) --> Î (\u+00CE)         ï (\u+00EF) --> Ï (\u+00CF)
//    ð (\u+00F0) --> Ð (\u+00D0)         ñ (\u+00F1) --> Ñ (\u+00D1)
//    ò (\u+00F2) --> Ò (\u+00D2)         ó (\u+00F3) --> Ó (\u+00D3)
//    ô (\u+00F4) --> Ô (\u+00D4)         õ (\u+00F5) --> Õ (\u+00D5)
//    ö (\u+00F6) --> Ö (\u+00D6)         ø (\u+00F8) --> Ø (\u+00D8)
//    ù (\u+00F9) --> Ù (\u+00D9)         ú (\u+00FA) --> Ú (\u+00DA)
//    û (\u+00FB) --> Û (\u+00DB)         ü (\u+00FC) --> Ü (\u+00DC)
//    ý (\u+00FD) --> Ý (\u+00DD)         þ (\u+00FE) --> Þ (\u+00DE)
//    ÿ (\u+00FF) --> Ÿ (\u+0178)         ā (\u+0101) --> Ā (\u+0100)
//    ă (\u+0103) --> Ă (\u+0102)         ą (\u+0105) --> Ą (\u+0104)
//    ć (\u+0107) --> Ć (\u+0106)         ĉ (\u+0109) --> Ĉ (\u+0108)
//    ċ (\u+010B) --> Ċ (\u+010A)         č (\u+010D) --> Č (\u+010C)
//    ď (\u+010F) --> Ď (\u+010E)         đ (\u+0111) --> Đ (\u+0110)
//    ē (\u+0113) --> Ē (\u+0112)         ĕ (\u+0115) --> Ĕ (\u+0114)
//    ė (\u+0117) --> Ė (\u+0116)         ę (\u+0119) --> Ę (\u+0118)
//    ě (\u+011B) --> Ě (\u+011A)         ĝ (\u+011D) --> Ĝ (\u+011C)
//    ğ (\u+011F) --> Ğ (\u+011E)         ġ (\u+0121) --> Ġ (\u+0120)
//    ģ (\u+0123) --> Ģ (\u+0122)         ĥ (\u+0125) --> Ĥ (\u+0124)
//    ħ (\u+0127) --> Ħ (\u+0126)         ĩ (\u+0129) --> Ĩ (\u+0128)
//    ī (\u+012B) --> Ī (\u+012A)         ĭ (\u+012D) --> Ĭ (\u+012C)
//    į (\u+012F) --> Į (\u+012E)         ı (\u+0131) --> I (\u+0049)
//    ij (\u+0133) --> IJ (\u+0132)         ĵ (\u+0135) --> Ĵ (\u+0134)
//    ķ (\u+0137) --> Ķ (\u+0136)         ĺ (\u+013A) --> Ĺ (\u+0139)
//    ļ (\u+013C) --> Ļ (\u+013B)         ľ (\u+013E) --> Ľ (\u+013D)
//    ŀ (\u+0140) --> Ŀ (\u+013F)         ł (\u+0142) --> Ł (\u+0141)
//    ń (\u+0144) --> Ń (\u+0143)         ņ (\u+0146) --> Ņ (\u+0145)
//    ň (\u+0148) --> Ň (\u+0147)         ŋ (\u+014B) --> Ŋ (\u+014A)
//    ō (\u+014D) --> Ō (\u+014C)         ŏ (\u+014F) --> Ŏ (\u+014E)
//    ő (\u+0151) --> Ő (\u+0150)         œ (\u+0153) --> Œ (\u+0152)
//    ŕ (\u+0155) --> Ŕ (\u+0154)         ŗ (\u+0157) --> Ŗ (\u+0156)
//    ř (\u+0159) --> Ř (\u+0158)         ś (\u+015B) --> Ś (\u+015A)
//    ŝ (\u+015D) --> Ŝ (\u+015C)         ş (\u+015F) --> Ş (\u+015E)
//    š (\u+0161) --> Š (\u+0160)         ţ (\u+0163) --> Ţ (\u+0162)
//    ť (\u+0165) --> Ť (\u+0164)         ŧ (\u+0167) --> Ŧ (\u+0166)
//    ũ (\u+0169) --> Ũ (\u+0168)         ū (\u+016B) --> Ū (\u+016A)
//    ŭ (\u+016D) --> Ŭ (\u+016C)         ů (\u+016F) --> Ů (\u+016E)
//    ű (\u+0171) --> Ű (\u+0170)         ų (\u+0173) --> Ų (\u+0172)
//    ŵ (\u+0175) --> Ŵ (\u+0174)         ŷ (\u+0177) --> Ŷ (\u+0176)
//    ź (\u+017A) --> Ź (\u+0179)         ż (\u+017C) --> Ż (\u+017B)
//    ž (\u+017E) --> Ž (\u+017D)
using System;

public class Example
{
   public static void Main()
   {
      int n = 0;
      for (int ctr = 0x20; ctr <= 0x017F; ctr++) {
         string string1 = Convert.ToChar(ctr).ToString();
         string upperString = string1.ToUpper();
         if (string1 != upperString) {
            Console.Write(@"{0} (\u+{1}) --> {2} (\u+{3})         ", 
                          string1, 
                          Convert.ToUInt16(string1[0]).ToString("X4"),  
                          upperString, 
                          Convert.ToUInt16(upperString[0]).ToString("X4"));                     
            n++;
            if (n % 2 == 0) Console.WriteLine();
         }
      } 
   }
}
// The example displays the following output:
//    a (\u+0061) --> A (\u+0041)         b (\u+0062) --> B (\u+0042)
//    c (\u+0063) --> C (\u+0043)         d (\u+0064) --> D (\u+0044)
//    e (\u+0065) --> E (\u+0045)         f (\u+0066) --> F (\u+0046)
//    g (\u+0067) --> G (\u+0047)         h (\u+0068) --> H (\u+0048)
//    i (\u+0069) --> I (\u+0049)         j (\u+006A) --> J (\u+004A)
//    k (\u+006B) --> K (\u+004B)         l (\u+006C) --> L (\u+004C)
//    m (\u+006D) --> M (\u+004D)         n (\u+006E) --> N (\u+004E)
//    o (\u+006F) --> O (\u+004F)         p (\u+0070) --> P (\u+0050)
//    q (\u+0071) --> Q (\u+0051)         r (\u+0072) --> R (\u+0052)
//    s (\u+0073) --> S (\u+0053)         t (\u+0074) --> T (\u+0054)
//    u (\u+0075) --> U (\u+0055)         v (\u+0076) --> V (\u+0056)
//    w (\u+0077) --> W (\u+0057)         x (\u+0078) --> X (\u+0058)
//    y (\u+0079) --> Y (\u+0059)         z (\u+007A) --> Z (\u+005A)
//    à (\u+00E0) --> À (\u+00C0)         á (\u+00E1) --> Á (\u+00C1)
//    â (\u+00E2) --> Â (\u+00C2)         ã (\u+00E3) --> Ã (\u+00C3)
//    ä (\u+00E4) --> Ä (\u+00C4)         å (\u+00E5) --> Å (\u+00C5)
//    æ (\u+00E6) --> Æ (\u+00C6)         ç (\u+00E7) --> Ç (\u+00C7)
//    è (\u+00E8) --> È (\u+00C8)         é (\u+00E9) --> É (\u+00C9)
//    ê (\u+00EA) --> Ê (\u+00CA)         ë (\u+00EB) --> Ë (\u+00CB)
//    ì (\u+00EC) --> Ì (\u+00CC)         í (\u+00ED) --> Í (\u+00CD)
//    î (\u+00EE) --> Î (\u+00CE)         ï (\u+00EF) --> Ï (\u+00CF)
//    ð (\u+00F0) --> Ð (\u+00D0)         ñ (\u+00F1) --> Ñ (\u+00D1)
//    ò (\u+00F2) --> Ò (\u+00D2)         ó (\u+00F3) --> Ó (\u+00D3)
//    ô (\u+00F4) --> Ô (\u+00D4)         õ (\u+00F5) --> Õ (\u+00D5)
//    ö (\u+00F6) --> Ö (\u+00D6)         ø (\u+00F8) --> Ø (\u+00D8)
//    ù (\u+00F9) --> Ù (\u+00D9)         ú (\u+00FA) --> Ú (\u+00DA)
//    û (\u+00FB) --> Û (\u+00DB)         ü (\u+00FC) --> Ü (\u+00DC)
//    ý (\u+00FD) --> Ý (\u+00DD)         þ (\u+00FE) --> Þ (\u+00DE)
//    ÿ (\u+00FF) --> Ÿ (\u+0178)         ā (\u+0101) --> Ā (\u+0100)
//    ă (\u+0103) --> Ă (\u+0102)         ą (\u+0105) --> Ą (\u+0104)
//    ć (\u+0107) --> Ć (\u+0106)         ĉ (\u+0109) --> Ĉ (\u+0108)
//    ċ (\u+010B) --> Ċ (\u+010A)         č (\u+010D) --> Č (\u+010C)
//    ď (\u+010F) --> Ď (\u+010E)         đ (\u+0111) --> Đ (\u+0110)
//    ē (\u+0113) --> Ē (\u+0112)         ĕ (\u+0115) --> Ĕ (\u+0114)
//    ė (\u+0117) --> Ė (\u+0116)         ę (\u+0119) --> Ę (\u+0118)
//    ě (\u+011B) --> Ě (\u+011A)         ĝ (\u+011D) --> Ĝ (\u+011C)
//    ğ (\u+011F) --> Ğ (\u+011E)         ġ (\u+0121) --> Ġ (\u+0120)
//    ģ (\u+0123) --> Ģ (\u+0122)         ĥ (\u+0125) --> Ĥ (\u+0124)
//    ħ (\u+0127) --> Ħ (\u+0126)         ĩ (\u+0129) --> Ĩ (\u+0128)
//    ī (\u+012B) --> Ī (\u+012A)         ĭ (\u+012D) --> Ĭ (\u+012C)
//    į (\u+012F) --> Į (\u+012E)         ı (\u+0131) --> I (\u+0049)
//    ij (\u+0133) --> IJ (\u+0132)         ĵ (\u+0135) --> Ĵ (\u+0134)
//    ķ (\u+0137) --> Ķ (\u+0136)         ĺ (\u+013A) --> Ĺ (\u+0139)
//    ļ (\u+013C) --> Ļ (\u+013B)         ľ (\u+013E) --> Ľ (\u+013D)
//    ŀ (\u+0140) --> Ŀ (\u+013F)         ł (\u+0142) --> Ł (\u+0141)
//    ń (\u+0144) --> Ń (\u+0143)         ņ (\u+0146) --> Ņ (\u+0145)
//    ň (\u+0148) --> Ň (\u+0147)         ŋ (\u+014B) --> Ŋ (\u+014A)
//    ō (\u+014D) --> Ō (\u+014C)         ŏ (\u+014F) --> Ŏ (\u+014E)
//    ő (\u+0151) --> Ő (\u+0150)         œ (\u+0153) --> Œ (\u+0152)
//    ŕ (\u+0155) --> Ŕ (\u+0154)         ŗ (\u+0157) --> Ŗ (\u+0156)
//    ř (\u+0159) --> Ř (\u+0158)         ś (\u+015B) --> Ś (\u+015A)
//    ŝ (\u+015D) --> Ŝ (\u+015C)         ş (\u+015F) --> Ş (\u+015E)
//    š (\u+0161) --> Š (\u+0160)         ţ (\u+0163) --> Ţ (\u+0162)
//    ť (\u+0165) --> Ť (\u+0164)         ŧ (\u+0167) --> Ŧ (\u+0166)
//    ũ (\u+0169) --> Ũ (\u+0168)         ū (\u+016B) --> Ū (\u+016A)
//    ŭ (\u+016D) --> Ŭ (\u+016C)         ů (\u+016F) --> Ů (\u+016E)
//    ű (\u+0171) --> Ű (\u+0170)         ų (\u+0173) --> Ų (\u+0172)
//    ŵ (\u+0175) --> Ŵ (\u+0174)         ŷ (\u+0177) --> Ŷ (\u+0176)
//    ź (\u+017A) --> Ź (\u+0179)         ż (\u+017C) --> Ż (\u+017B)
//    ž (\u+017E) --> Ž (\u+017D)
Module Example
   Public Sub Main()
      Dim n As Integer = 0
      For ctr As Integer = &h20 To &h017F
         Dim string1 As String = ChrW(ctr).ToString()
         Dim upperString As String = string1.ToUpper()
         If string1 <> upperString Then
            Console.Write("{0} (\u+{1}) --> {2} (\u+{3})         ", _
                          string1, _
                          Convert.ToUInt16(string1.Chars(0)).ToString("X4"), _ 
                          upperString, _
                          Convert.ToUInt16(upperString.Chars(0)).ToString("X4"))                     
            n += 1
            If n Mod 2 = 0 Then Console.WriteLine()
         End If
      Next 
   End Sub
End Module
' The example displays the following output:
'    a (\u+0061) --> A (\u+0041)         b (\u+0062) --> B (\u+0042)
'    c (\u+0063) --> C (\u+0043)         d (\u+0064) --> D (\u+0044)
'    e (\u+0065) --> E (\u+0045)         f (\u+0066) --> F (\u+0046)
'    g (\u+0067) --> G (\u+0047)         h (\u+0068) --> H (\u+0048)
'    i (\u+0069) --> I (\u+0049)         j (\u+006A) --> J (\u+004A)
'    k (\u+006B) --> K (\u+004B)         l (\u+006C) --> L (\u+004C)
'    m (\u+006D) --> M (\u+004D)         n (\u+006E) --> N (\u+004E)
'    o (\u+006F) --> O (\u+004F)         p (\u+0070) --> P (\u+0050)
'    q (\u+0071) --> Q (\u+0051)         r (\u+0072) --> R (\u+0052)
'    s (\u+0073) --> S (\u+0053)         t (\u+0074) --> T (\u+0054)
'    u (\u+0075) --> U (\u+0055)         v (\u+0076) --> V (\u+0056)
'    w (\u+0077) --> W (\u+0057)         x (\u+0078) --> X (\u+0058)
'    y (\u+0079) --> Y (\u+0059)         z (\u+007A) --> Z (\u+005A)
'    à (\u+00E0) --> À (\u+00C0)         á (\u+00E1) --> Á (\u+00C1)
'    â (\u+00E2) --> Â (\u+00C2)         ã (\u+00E3) --> Ã (\u+00C3)
'    ä (\u+00E4) --> Ä (\u+00C4)         å (\u+00E5) --> Å (\u+00C5)
'    æ (\u+00E6) --> Æ (\u+00C6)         ç (\u+00E7) --> Ç (\u+00C7)
'    è (\u+00E8) --> È (\u+00C8)         é (\u+00E9) --> É (\u+00C9)
'    ê (\u+00EA) --> Ê (\u+00CA)         ë (\u+00EB) --> Ë (\u+00CB)
'    ì (\u+00EC) --> Ì (\u+00CC)         í (\u+00ED) --> Í (\u+00CD)
'    î (\u+00EE) --> Î (\u+00CE)         ï (\u+00EF) --> Ï (\u+00CF)
'    ð (\u+00F0) --> Ð (\u+00D0)         ñ (\u+00F1) --> Ñ (\u+00D1)
'    ò (\u+00F2) --> Ò (\u+00D2)         ó (\u+00F3) --> Ó (\u+00D3)
'    ô (\u+00F4) --> Ô (\u+00D4)         õ (\u+00F5) --> Õ (\u+00D5)
'    ö (\u+00F6) --> Ö (\u+00D6)         ø (\u+00F8) --> Ø (\u+00D8)
'    ù (\u+00F9) --> Ù (\u+00D9)         ú (\u+00FA) --> Ú (\u+00DA)
'    û (\u+00FB) --> Û (\u+00DB)         ü (\u+00FC) --> Ü (\u+00DC)
'    ý (\u+00FD) --> Ý (\u+00DD)         þ (\u+00FE) --> Þ (\u+00DE)
'    ÿ (\u+00FF) --> Ÿ (\u+0178)         ā (\u+0101) --> Ā (\u+0100)
'    ă (\u+0103) --> Ă (\u+0102)         ą (\u+0105) --> Ą (\u+0104)
'    ć (\u+0107) --> Ć (\u+0106)         ĉ (\u+0109) --> Ĉ (\u+0108)
'    ċ (\u+010B) --> Ċ (\u+010A)         č (\u+010D) --> Č (\u+010C)
'    ď (\u+010F) --> Ď (\u+010E)         đ (\u+0111) --> Đ (\u+0110)
'    ē (\u+0113) --> Ē (\u+0112)         ĕ (\u+0115) --> Ĕ (\u+0114)
'    ė (\u+0117) --> Ė (\u+0116)         ę (\u+0119) --> Ę (\u+0118)
'    ě (\u+011B) --> Ě (\u+011A)         ĝ (\u+011D) --> Ĝ (\u+011C)
'    ğ (\u+011F) --> Ğ (\u+011E)         ġ (\u+0121) --> Ġ (\u+0120)
'    ģ (\u+0123) --> Ģ (\u+0122)         ĥ (\u+0125) --> Ĥ (\u+0124)
'    ħ (\u+0127) --> Ħ (\u+0126)         ĩ (\u+0129) --> Ĩ (\u+0128)
'    ī (\u+012B) --> Ī (\u+012A)         ĭ (\u+012D) --> Ĭ (\u+012C)
'    į (\u+012F) --> Į (\u+012E)         ı (\u+0131) --> I (\u+0049)
'    ij (\u+0133) --> IJ (\u+0132)         ĵ (\u+0135) --> Ĵ (\u+0134)
'    ķ (\u+0137) --> Ķ (\u+0136)         ĺ (\u+013A) --> Ĺ (\u+0139)
'    ļ (\u+013C) --> Ļ (\u+013B)         ľ (\u+013E) --> Ľ (\u+013D)
'    ŀ (\u+0140) --> Ŀ (\u+013F)         ł (\u+0142) --> Ł (\u+0141)
'    ń (\u+0144) --> Ń (\u+0143)         ņ (\u+0146) --> Ņ (\u+0145)
'    ň (\u+0148) --> Ň (\u+0147)         ŋ (\u+014B) --> Ŋ (\u+014A)
'    ō (\u+014D) --> Ō (\u+014C)         ŏ (\u+014F) --> Ŏ (\u+014E)
'    ő (\u+0151) --> Ő (\u+0150)         œ (\u+0153) --> Œ (\u+0152)
'    ŕ (\u+0155) --> Ŕ (\u+0154)         ŗ (\u+0157) --> Ŗ (\u+0156)
'    ř (\u+0159) --> Ř (\u+0158)         ś (\u+015B) --> Ś (\u+015A)
'    ŝ (\u+015D) --> Ŝ (\u+015C)         ş (\u+015F) --> Ş (\u+015E)
'    š (\u+0161) --> Š (\u+0160)         ţ (\u+0163) --> Ţ (\u+0162)
'    ť (\u+0165) --> Ť (\u+0164)         ŧ (\u+0167) --> Ŧ (\u+0166)
'    ũ (\u+0169) --> Ũ (\u+0168)         ū (\u+016B) --> Ū (\u+016A)
'    ŭ (\u+016D) --> Ŭ (\u+016C)         ů (\u+016F) --> Ů (\u+016E)
'    ű (\u+0171) --> Ű (\u+0170)         ų (\u+0173) --> Ų (\u+0172)
'    ŵ (\u+0175) --> Ŵ (\u+0174)         ŷ (\u+0177) --> Ŷ (\u+0176)
'    ź (\u+017A) --> Ź (\u+0179)         ż (\u+017C) --> Ż (\u+017B)
'    ž (\u+017E) --> Ž (\u+017D)

Commenti

Questo metodo Usa le regole delle impostazioni cultura correnti per convertire ogni carattere nell'istanza corrente nell'equivalente maiuscolo.This method uses the casing rules of the current culture to convert each character in the current instance to its uppercase equivalent. Se un carattere non ha un equivalente maiuscolo, verrà riportato invariato nella stringa restituita.If a character does not have an uppercase equivalent, it is included unchanged in the returned string.

Nota

Questo metodo non modifica il valore dell'istanza corrente.This method does not modify the value of the current instance. Al contrario, restituisce una nuova stringa in cui tutti i caratteri nell'istanza corrente sono stati convertiti in caratteri maiuscoli.Instead, it returns a new string in which all characters in the current instance are converted to uppercase.

Il ToUpper metodo viene spesso utilizzato per convertire una stringa in lettere maiuscole in modo che può essere utilizzato in un confronto tra maiuscole e minuscole.The ToUpper method is often used to convert a string to uppercase so that it can be used in a case-insensitive comparison. Un metodo migliore per eseguire il confronto tra maiuscole e minuscole consiste nel chiamare un metodo di confronto di stringa che contiene un StringComparison parametro il cui valore è impostato su StringComparison.CurrentCultureIgnoreCase per un confronto tra maiuscole e minuscole, distinzione delle impostazioni cultura.A better method to perform case-insensitive comparison is to call a string comparison method that has a StringComparison parameter whose value you set to StringComparison.CurrentCultureIgnoreCase for a culture-sensitive, case-insensitive comparison.

Considerazioni sulla sicurezzaSecurity Considerations

L'operazione di maiuscole e minuscole risultante dalla chiamata di ToUpper() metodo tiene conto delle convenzioni delle impostazioni cultura correnti.The casing operation that results from calling the ToUpper() method takes the casing conventions of the current culture into account. Se è necessaria la versione maiuscola o minuscola di un identificatore di sistema operativo, ad esempio un nome file, named pipe o una chiave del Registro di sistema, utilizzare il ToLowerInvariant o ToUpperInvariant (metodo).If you need the lowercase or uppercase version of an operating system identifier, such as a file name, named pipe, or registry key, use the ToLowerInvariant or ToUpperInvariant method. Questa operazione produce lo stesso risultato in tutte le impostazioni cultura (a differenza di ToUpper() (metodo)) ed esegue in modo più efficiente.This produces the same result in every culture (unlike the ToUpper() method) and performs more efficiently.

Note per i chiamanti

Come illustrato in Best Practices for Using Strings, è consigliabile evitare di chiamare metodi di maiuscole e minuscole delle stringhe che sostituiscono i valori predefiniti e invece chiamano metodi che richiedono parametri per specificare in modo esplicito.As explained in Best Practices for Using Strings, we recommend that you avoid calling string casing methods that substitute default values and instead call methods that require parameters to be explicitly specified. Per convertire una stringa in lettere maiuscole usando le convenzioni delle impostazioni cultura correnti, chiamare il ToUpper(CultureInfo) overload del metodo con un valore di CurrentCulture per la relativa culture parametro.To convert a string to uppercase by using the casing conventions of the current culture, call the ToUpper(CultureInfo) method overload with a value of CurrentCulture for its culture parameter.

Vedi anche

Si applica a