String.EndsWith Metodo

  • Riferimento

Definizione

Spazio dei nomi:
System
Assembly:
System.Runtime.dll
Assembly:
netstandard.dll
Assembly:
mscorlib.dll

Determina se la fine di questa istanza di stringa corrisponde a una stringa specificata.

Overload

EndsWith(Char)

Determina se la fine di questa istanza di stringa corrisponde al carattere specificato.
EndsWith(String)

Determina se la fine di questa istanza di stringa corrisponde alla stringa specificata.
EndsWith(String, StringComparison)

Determina se la fine di questa istanza di stringa corrisponde alla stringa specificata se confrontata mediante l'opzione di confronto specificata.
EndsWith(String, Boolean, CultureInfo)

Determina se la fine di questa istanza di stringa corrisponde alla stringa specificata se confrontata mediante le impostazioni cultura specificate.

EndsWith(Char)

Determina se la fine di questa istanza di stringa corrisponde al carattere specificato.

public:
 bool EndsWith(char value);
public bool EndsWith (char value);
member this.EndsWith : char -> bool
Public Function EndsWith (value As Char) As Boolean

Parametri

value
Char

Carattere da confrontare con il carattere alla fine di questa istanza.

Restituisce

Boolean

true se value corrisponde alla fine di questa istanza; in caso contrario, false.

Commenti

Questo metodo esegue un confronto ordinale (distinzione tra maiuscole e minuscole e cultura-insensibili).

Si applica a

EndsWith(String)

Determina se la fine di questa istanza di stringa corrisponde alla stringa specificata.

public:
 bool EndsWith(System::String ^ value);
public bool EndsWith (string value);
member this.EndsWith : string -> bool
Public Function EndsWith (value As String) As Boolean

Parametri

value
String

Stringa da confrontare con la sottostringa alla fine di questa istanza.

Restituisce

Boolean

true se value corrisponde alla fine di questa istanza; in caso contrario, false.

Eccezioni

ArgumentNullException

value è null.

Esempio

L'esempio seguente indica se ogni stringa in una matrice termina con un punto (".").

using System;

public class Example
{
   public static void Main()
   {
      String[] strings = { "This is a string.", "Hello!", "Nothing.", 
                           "Yes.", "randomize" };
      foreach (var value in strings) {
         bool endsInPeriod = value.EndsWith(".");
         Console.WriteLine("'{0}' ends in a period: {1}", 
                           value, endsInPeriod);
      }                            
   }
}
// The example displays the following output:
//       'This is a string.' ends in a period: True
//       'Hello!' ends in a period: False
//       'Nothing.' ends in a period: True
//       'Yes.' ends in a period: True
//       'randomize' ends in a period: False

let strings = 
    [| "This is a string."; "Hello!"; "Nothing."
       "Yes."; "randomize" |]

for value in strings do
    let endsInPeriod = value.EndsWith "."
    printfn $"'{value}' ends in a period: {endsInPeriod}"
// The example displays the following output:
//       'This is a string.' ends in a period: True
//       'Hello!' ends in a period: False
//       'Nothing.' ends in a period: True
//       'Yes.' ends in a period: True
//       'randomize' ends in a period: False

Module Example
   Public Sub Main()
      Dim strings() As String = { "This is a string.", "Hello!", 
                                  "Nothing.", "Yes.", "randomize" }
      For Each value In strings
         Dim endsInPeriod As Boolean = value.EndsWith(".")
         Console.WriteLine("'{0}' ends in a period: {1}", 
                           value, endsInPeriod)
      Next                            
   End Sub
End Module
' The example displays the following output:
'       'This is a string.' ends in a period: True
'       'Hello!' ends in a period: False
'       'Nothing.' ends in a period: True
'       'Yes.' ends in a period: True
'       'randomize' ends in a period: False

Nell'esempio seguente viene definito un StripEndTags metodo che usa il EndsWith(String) metodo per rimuovere i tag finali HTML dalla fine di una riga. Si noti che il StripEndTags metodo viene chiamato ricorsivamente per assicurarsi che più tag finali HTML alla fine della riga vengano rimossi.

using namespace System;
using namespace System::Collections;

String^ StripEndTags( String^ item )
{
   bool found = false;
   
   // try to find a tag at the end of the line using EndsWith
   if ( item->Trim()->EndsWith( ">" ) )
   {
      
      // now search for the opening tag...
      int lastLocation = item->LastIndexOf( "</" );
      
      // remove the identified section, if it is a valid region
      if ( lastLocation >= 0 ) {
            item = item->Substring( 0, lastLocation );
            found = true;
      }
   }

   if (found) item = StripEndTags(item);
   
   return item;
}

int main()
{
   
   // process an input file that contains html tags.
   // this sample checks for multiple tags at the end of the line, rather than simply
   // removing the last one.
   // note: HTML markup tags always end in a greater than symbol (>).
   array<String^>^strSource = {"<b>This is bold text</b>","<H1>This is large Text</H1>","<b><i><font color=green>This has multiple tags</font></i></b>","<b>This has <i>embedded</i> tags.</b>","This line simply ends with a greater than symbol, it should not be modified>"};
   Console::WriteLine( "The following lists the items before the ends have been stripped:" );
   Console::WriteLine( "-----------------------------------------------------------------" );
   
   // print out the initial array of strings
   IEnumerator^ myEnum1 = strSource->GetEnumerator();
   while ( myEnum1->MoveNext() )
   {
      String^ s = safe_cast<String^>(myEnum1->Current);
      Console::WriteLine( s );
   }

   Console::WriteLine();
   Console::WriteLine( "The following lists the items after the ends have been stripped:" );
   Console::WriteLine( "----------------------------------------------------------------" );
   
   // Display the array of strings.
   IEnumerator^ myEnum2 = strSource->GetEnumerator();
   while ( myEnum2->MoveNext() )
   {
      String^ s = safe_cast<String^>(myEnum2->Current);
      Console::WriteLine( StripEndTags( s ) );
   }
}
// The example displays the following output:
//    The following lists the items before the ends have been stripped:
//    -----------------------------------------------------------------
//    <b>This is bold text</b>
//    <H1>This is large Text</H1>
//    <b><i><font color=green>This has multiple tags</font></i></b>
//    <b>This has <i>embedded</i> tags.</b>
//    This line simply ends with a greater than symbol, it should not be modified>
//    
//    The following lists the items after the ends have been stripped:
//    ----------------------------------------------------------------
//    <b>This is bold text
//    <H1>This is large Text
//    <b><i><font color=green>This has multiple tags
//    <b>This has <i>embedded</i> tags.
//    This line simply ends with a greater than symbol, it should not be modified>

using System;

public class EndsWithTest {
    public static void Main() {

        // process an input file that contains html tags.
        // this sample checks for multiple tags at the end of the line, rather than simply
        // removing the last one.
        // note: HTML markup tags always end in a greater than symbol (>).

        string [] strSource = { "<b>This is bold text</b>", "<H1>This is large Text</H1>",
                "<b><i><font color=green>This has multiple tags</font></i></b>",
                "<b>This has <i>embedded</i> tags.</b>",
                "This line simply ends with a greater than symbol, it should not be modified>" };

        Console.WriteLine("The following lists the items before the ends have been stripped:");
        Console.WriteLine("-----------------------------------------------------------------");

        // print out the initial array of strings
        foreach ( string s in strSource )
            Console.WriteLine( s );

        Console.WriteLine();

        Console.WriteLine("The following lists the items after the ends have been stripped:");
        Console.WriteLine("----------------------------------------------------------------");

        // print out the array of strings
        foreach (var s in strSource)
            Console.WriteLine(StripEndTags(s));
    }

    private static string StripEndTags( string item ) {

        bool found = false;

        // try to find a tag at the end of the line using EndsWith
        if (item.Trim().EndsWith(">")) {

            // now search for the opening tag...
            int lastLocation = item.LastIndexOf( "</" );

            // remove the identified section, if it is a valid region
            if ( lastLocation >= 0 ) {
                found = true;
                item =  item.Substring( 0, lastLocation );
            }
        }

        if (found)
           item = StripEndTags(item);

        return item;
    }
}
// The example displays the following output:
//    The following lists the items before the ends have been stripped:
//    -----------------------------------------------------------------
//    <b>This is bold text</b>
//    <H1>This is large Text</H1>
//    <b><i><font color=green>This has multiple tags</font></i></b>
//    <b>This has <i>embedded</i> tags.</b>
//    This line simply ends with a greater than symbol, it should not be modified>
//
//    The following lists the items after the ends have been stripped:
//    ----------------------------------------------------------------
//    <b>This is bold text
//    <H1>This is large Text
//    <b><i><font color=green>This has multiple tags
//    <b>This has <i>embedded</i> tags.
//    This line simply ends with a greater than symbol, it should not be modified>

let rec stripEndTags item =
    let mutable item: string = item
    let mutable found = false

    // try to find a tag at the end of the line using EndsWith
    if item.Trim().EndsWith ">" then
        // now search for the opening tag...
        let lastLocation = item.LastIndexOf "</"

        // remove the identified section, if it is a valid region
        if lastLocation >= 0 then
            found <- true
            item <- item.Substring(0, lastLocation)

    if found then
        stripEndTags item
    else 
        item

// process an input file that contains html tags.
// this sample checks for multiple tags at the end of the line, rather than simply
// removing the last one.
// note: HTML markup tags always end in a greater than symbol (>).

let strSource = 
    [| "<b>This is bold text</b>"; "<H1>This is large Text</H1>"
       "<b><i><font color=green>This has multiple tags</font></i></b>"
       "<b>This has <i>embedded</i> tags.</b>"
       "This line simply ends with a greater than symbol, it should not be modified>" |]

printfn "The following lists the items before the ends have been stripped:"
printfn "-----------------------------------------------------------------"

// print out the initial array of strings
for s in strSource do
    printfn $"{s}"

printfn "\nThe following lists the items after the ends have been stripped:"
printfn "----------------------------------------------------------------"

// print out the array of strings
for s in strSource do
    printfn $"{stripEndTags s}"

// The example displays the following output:
//    The following lists the items before the ends have been stripped:
//    -----------------------------------------------------------------
//    <b>This is bold text</b>
//    <H1>This is large Text</H1>
//    <b><i><font color=green>This has multiple tags</font></i></b>
//    <b>This has <i>embedded</i> tags.</b>
//    This line simply ends with a greater than symbol, it should not be modified>
//
//    The following lists the items after the ends have been stripped:
//    ----------------------------------------------------------------
//    <b>This is bold text
//    <H1>This is large Text
//    <b><i><font color=green>This has multiple tags
//    <b>This has <i>embedded</i> tags.
//    This line simply ends with a greater than symbol, it should not be modified>

Public Module Example
    Public Sub Main()
        Dim strSource() As String = { "<b>This is bold text</b>", 
                    "<H1>This is large Text</H1>", 
                    "<b><i><font color = green>This has multiple tags</font></i></b>", 
                    "<b>This has <i>embedded</i> tags.</b>", 
                    "This line simply ends with a greater than symbol, it should not be modified>" }

        Console.WriteLine("The following lists the items before the ends have been stripped:")
        Console.WriteLine("-----------------------------------------------------------------")

        ' Display the initial array of strings.
        For Each s As String In  strSource
            Console.WriteLine(s)
        Next
        Console.WriteLine()

        Console.WriteLine("The following lists the items after the ends have been stripped:")
        Console.WriteLine("----------------------------------------------------------------")

        ' Display the array of strings.
        For Each s As String In strSource
            Console.WriteLine(StripEndTags(s))
        Next 
    End Sub 

    Private Function StripEndTags(item As String) As String
        Dim found As Boolean = False
        
        ' Try to find a tag at the end of the line using EndsWith.
        If item.Trim().EndsWith(">") Then
            ' now search for the opening tag...
            Dim lastLocation As Integer = item.LastIndexOf("</")
            If lastLocation >= 0 Then
                found = True
                
                ' Remove the identified section, if it is a valid region.
                item = item.Substring(0, lastLocation)
            End If
        End If
        
        If found Then item = StripEndTags(item)
        Return item
    End Function 
End Module
' The example displays the following output:
'    The following lists the items before the ends have been stripped:
'    -----------------------------------------------------------------
'    <b>This is bold text</b>
'    <H1>This is large Text</H1>
'    <b><i><font color = green>This has multiple tags</font></i></b>
'    <b>This has <i>embedded</i> tags.</b>
'    This line simply ends with a greater than symbol, it should not be modified>
'    
'    The following lists the items after the ends have been stripped:
'    ----------------------------------------------------------------
'    <b>This is bold text
'    <H1>This is large Text
'    <b><i><font color = green>This has multiple tags
'    <b>This has <i>embedded</i> tags.
'    This line simply ends with a greater than symbol, it should not be modified>

Commenti

Questo metodo confronta value la sottostringa alla fine di questa istanza che corrisponde alla stessa lunghezza di valuee restituisce un'indicazione se sono uguali. Per essere uguale, value deve essere un riferimento a questa stessa istanza o corrisponde alla fine di questa istanza.

Questo metodo esegue un confronto tra maiuscole e minuscole e sensibili alle impostazioni cultura usando le impostazioni cultura correnti.

Note per i chiamanti

Come illustrato in Procedure consigliate per l'uso di stringhe, è consigliabile evitare di chiamare metodi di confronto stringa che sostituisci i valori predefiniti e chiamare i metodi che richiedono parametri da specificare in modo esplicito. Per determinare se una stringa termina con una determinata sottostringa usando le regole di confronto stringa delle impostazioni cultura correnti, segnalare in modo esplicito l'intenzione chiamando l'overload del metodo con un valore di CurrentCulture per il EndsWith(String, StringComparison) relativo comparisonType parametro. Se non è necessario un confronto con riconoscimento linguistico, prendere in considerazione l'uso di Ordinal.

Vedi anche

Si applica a

EndsWith(String, StringComparison)

Determina se la fine di questa istanza di stringa corrisponde alla stringa specificata se confrontata mediante l'opzione di confronto specificata.

public:
 bool EndsWith(System::String ^ value, StringComparison comparisonType);
public bool EndsWith (string value, StringComparison comparisonType);
[System.Runtime.InteropServices.ComVisible(false)]
public bool EndsWith (string value, StringComparison comparisonType);
member this.EndsWith : string * StringComparison -> bool
[<System.Runtime.InteropServices.ComVisible(false)>]
member this.EndsWith : string * StringComparison -> bool
Public Function EndsWith (value As String, comparisonType As StringComparison) As Boolean

Parametri

value
String

Stringa da confrontare con la sottostringa alla fine di questa istanza.

comparisonType
StringComparison

Uno dei valori di enumerazione che determina la modalità di confronto fra questa stringa e value.

Restituisce

Boolean

true se il parametro value corrisponde alla fine di questa stringa; in caso contrario, false.

Attributi
ComVisibleAttribute

Eccezioni

ArgumentNullException

value è null.

ArgumentException

comparisonType non è un valore di StringComparison.

Esempio

Nell'esempio seguente viene determinato se una stringa termina con una determinata sottostringa. I risultati sono interessati dalla scelta delle impostazioni cultura, se il caso viene ignorato e se viene eseguito un confronto ordinale.

// This example demonstrates the 
// System.String.EndsWith(String, StringComparison) method.

using namespace System;
using namespace System::Threading;

void Test(String^ testString, String^ searchString, 
     StringComparison comparison)
{
    String^ resultFormat = "\"{0}\" {1} with \"{2}\".";
    String^ resultString = "does not end";

    if (testString->EndsWith(searchString, comparison))
    {
        resultString = "ends";
    }
    Console::WriteLine(resultFormat, testString, resultString, searchString);
}

int main()
{
    String^ introMessage =
        "Determine whether a string ends with another string, " +
        "using\ndifferent values of StringComparison.";

    array<StringComparison>^ comparisonValues = {
        StringComparison::CurrentCulture,
        StringComparison::CurrentCultureIgnoreCase,
        StringComparison::InvariantCulture,
        StringComparison::InvariantCultureIgnoreCase,
        StringComparison::Ordinal,
        StringComparison::OrdinalIgnoreCase};

    Console::WriteLine(introMessage);

    // Display the current culture because the culture-specific comparisons
    // can produce different results with different cultures.
    Console::WriteLine("The current culture is {0}.\n",
        Thread::CurrentThread->CurrentCulture->Name);
    // Perform two tests for each StringComparison
    for each (StringComparison stringCmp in comparisonValues)
    {
        Console::WriteLine("StringComparison.{0}:", stringCmp);
        Test("abcXYZ", "XYZ", stringCmp);
        Test("abcXYZ", "xyz", stringCmp);
        Console::WriteLine();
    }
}

/*
This code example produces the following results:

Determine whether a string ends with another string, using
different values of StringComparison.
The current culture is en-US.

StringComparison.CurrentCulture:
"abcXYZ" ends with "XYZ".
"abcXYZ" does not end with "xyz".

StringComparison.CurrentCultureIgnoreCase:
"abcXYZ" ends with "XYZ".
"abcXYZ" ends with "xyz".

StringComparison.InvariantCulture:
"abcXYZ" ends with "XYZ".
"abcXYZ" does not end with "xyz".

StringComparison.InvariantCultureIgnoreCase:
"abcXYZ" ends with "XYZ".
"abcXYZ" ends with "xyz".

StringComparison.Ordinal:
"abcXYZ" ends with "XYZ".
"abcXYZ" does not end with "xyz".

StringComparison.OrdinalIgnoreCase:
"abcXYZ" ends with "XYZ".
"abcXYZ" ends with "xyz".

*/

// This example demonstrates the 
// System.String.EndsWith(String, StringComparison) method.

using System;
using System.Threading;

class Sample 
{
    public static void Main() 
    {
        string intro = "Determine whether a string ends with another string, " +
                   "using\n  different values of StringComparison.";

        StringComparison[] scValues = {
            StringComparison.CurrentCulture,
            StringComparison.CurrentCultureIgnoreCase,
            StringComparison.InvariantCulture,
            StringComparison.InvariantCultureIgnoreCase,
            StringComparison.Ordinal,
            StringComparison.OrdinalIgnoreCase };

        Console.WriteLine(intro);

        // Display the current culture because the culture-specific comparisons
        // can produce different results with different cultures.
        Console.WriteLine("The current culture is {0}.\n", 
                       Thread.CurrentThread.CurrentCulture.Name);
        
        // Determine whether three versions of the letter I are equal to each other. 
        foreach (StringComparison sc in scValues)
        {
            Console.WriteLine("StringComparison.{0}:", sc);
            Test("abcXYZ", "XYZ", sc);
            Test("abcXYZ", "xyz", sc);
            Console.WriteLine();
        }
    }

    protected static void Test(string x, string y, StringComparison comparison)
    {
        string resultFmt = "\"{0}\" {1} with \"{2}\".";
        string result = "does not end";

        if (x.EndsWith(y, comparison))
            result = "ends";
        Console.WriteLine(resultFmt, x, result, y);
    }
}

/*
This code example produces the following results:

Determine whether a string ends with another string, using
  different values of StringComparison.
The current culture is en-US.

StringComparison.CurrentCulture:
"abcXYZ" ends with "XYZ".
"abcXYZ" does not end with "xyz".

StringComparison.CurrentCultureIgnoreCase:
"abcXYZ" ends with "XYZ".
"abcXYZ" ends with "xyz".

StringComparison.InvariantCulture:
"abcXYZ" ends with "XYZ".
"abcXYZ" does not end with "xyz".

StringComparison.InvariantCultureIgnoreCase:
"abcXYZ" ends with "XYZ".
"abcXYZ" ends with "xyz".

StringComparison.Ordinal:
"abcXYZ" ends with "XYZ".
"abcXYZ" does not end with "xyz".

StringComparison.OrdinalIgnoreCase:
"abcXYZ" ends with "XYZ".
"abcXYZ" ends with "xyz".

*/

// This example demonstrates the 
// System.String.EndsWith(String, StringComparison) method.

open System
open System.Threading

let test (x: string) y (comparison: StringComparison) =
    let result = 
        if x.EndsWith(y, comparison) then
            "ends"
        else 
            "does not end"
    printfn $"\"{x}\" {result} with \"{y}\"."

let scValues = 
  [|
    StringComparison.CurrentCulture
    StringComparison.CurrentCultureIgnoreCase
    StringComparison.InvariantCulture
    StringComparison.InvariantCultureIgnoreCase
    StringComparison.Ordinal
    StringComparison.OrdinalIgnoreCase
  |]

printfn "Determine whether a string ends with another string, using\n  different values of StringComparison."

// Display the current culture because the culture-specific comparisons
// can produce different results with different cultures.
printfn $"The current culture is {Thread.CurrentThread.CurrentCulture.Name}.\n"

// Determine whether three versions of the letter I are equal to each other. 
for sc in scValues do
    printfn $"StringComparison.{sc}:"
    test "abcXYZ" "XYZ" sc
    test "abcXYZ" "xyz" sc
    printfn ""

(*
This code example produces the following results:

Determine whether a string ends with another string, using
  different values of StringComparison.
The current culture is en-US.

StringComparison.CurrentCulture:
"abcXYZ" ends with "XYZ".
"abcXYZ" does not end with "xyz".

StringComparison.CurrentCultureIgnoreCase:
"abcXYZ" ends with "XYZ".
"abcXYZ" ends with "xyz".

StringComparison.InvariantCulture:
"abcXYZ" ends with "XYZ".
"abcXYZ" does not end with "xyz".

StringComparison.InvariantCultureIgnoreCase:
"abcXYZ" ends with "XYZ".
"abcXYZ" ends with "xyz".

StringComparison.Ordinal:
"abcXYZ" ends with "XYZ".
"abcXYZ" does not end with "xyz".

StringComparison.OrdinalIgnoreCase:
"abcXYZ" ends with "XYZ".
"abcXYZ" ends with "xyz".

*)

' This example demonstrates the 
' System.String.EndsWith(String, StringComparison) method.

Imports System.Threading

Class Sample
    Public Shared Sub Main() 
        Dim intro As String = "Determine whether a string ends with another string, " & _
                              "using" & vbCrLf & "  different values of StringComparison."
        
        Dim scValues As StringComparison() =  { _
                        StringComparison.CurrentCulture, _
                        StringComparison.CurrentCultureIgnoreCase, _
                        StringComparison.InvariantCulture, _
                        StringComparison.InvariantCultureIgnoreCase, _
                        StringComparison.Ordinal, _
                        StringComparison.OrdinalIgnoreCase }

        Console.WriteLine(intro)
        
        ' Display the current culture because the culture-specific comparisons
        ' can produce different results with different cultures.
        Console.WriteLine("The current culture is {0}." & vbCrLf, _
                           Thread.CurrentThread.CurrentCulture.Name)

        ' Determine whether three versions of the letter I are equal to each other. 
        Dim sc As StringComparison
        For Each sc In  scValues
            Console.WriteLine("StringComparison.{0}:", sc)
            Test("abcXYZ", "XYZ", sc)
            Test("abcXYZ", "xyz", sc)
            Console.WriteLine()
        Next sc
    
    End Sub
    
    
    Protected Shared Sub Test(ByVal x As String, ByVal y As String, _
                              ByVal comparison As StringComparison) 
        Dim resultFmt As String = """{0}"" {1} with ""{2}""."
        Dim result As String = "does not end"
        '
        If x.EndsWith(y, comparison) Then
            result = "ends"
        End If
        Console.WriteLine(resultFmt, x, result, y)
    
    End Sub
End Class

'
'This code example produces the following results:
'
'Determine whether a string ends with another string, using
'  different values of StringComparison.
'The current culture is en-US.
'
'StringComparison.CurrentCulture:
'"abcXYZ" ends with "XYZ".
'"abcXYZ" does not end with "xyz".
'
'StringComparison.CurrentCultureIgnoreCase:
'"abcXYZ" ends with "XYZ".
'"abcXYZ" ends with "xyz".
'
'StringComparison.InvariantCulture:
'"abcXYZ" ends with "XYZ".
'"abcXYZ" does not end with "xyz".
'
'StringComparison.InvariantCultureIgnoreCase:
'"abcXYZ" ends with "XYZ".
'"abcXYZ" ends with "xyz".
'
'StringComparison.Ordinal:
'"abcXYZ" ends with "XYZ".
'"abcXYZ" does not end with "xyz".
'
'StringComparison.OrdinalIgnoreCase:
'"abcXYZ" ends with "XYZ".
'"abcXYZ" ends with "xyz".
'

Commenti

Il EndsWith metodo confronta il value parametro con la sottostringa alla fine di questa stringa e restituisce un valore che indica se sono uguali. Per essere uguale, value deve essere un riferimento a questa stessa stringa, deve essere la stringa vuota ("") o deve corrispondere alla fine di questa stringa. Il tipo di confronto eseguito dal metodo dipende dal EndsWith valore del comparisonType parametro.

Vedi anche

Si applica a

EndsWith(String, Boolean, CultureInfo)

Determina se la fine di questa istanza di stringa corrisponde alla stringa specificata se confrontata mediante le impostazioni cultura specificate.

public:
 bool EndsWith(System::String ^ value, bool ignoreCase, System::Globalization::CultureInfo ^ culture);
public bool EndsWith (string value, bool ignoreCase, System.Globalization.CultureInfo? culture);
public bool EndsWith (string value, bool ignoreCase, System.Globalization.CultureInfo culture);
member this.EndsWith : string * bool * System.Globalization.CultureInfo -> bool
Public Function EndsWith (value As String, ignoreCase As Boolean, culture As CultureInfo) As Boolean

Parametri

value
String

Stringa da confrontare con la sottostringa alla fine di questa istanza.

ignoreCase
Boolean

true per ignorare la distinzione tra maiuscole e minuscole durante il confronto; in caso contrario, false.

culture
CultureInfo

Informazioni relative alle impostazioni cultura che determinano le modalità di confronto fra questa istanza e il parametro value. Se culture è null, verranno usate le impostazioni cultura correnti.

Restituisce

Boolean

true se il parametro value corrisponde alla fine di questa stringa; in caso contrario, false.

Eccezioni

ArgumentNullException

value è null.

Esempio

Nell'esempio seguente viene determinato se una stringa si verifica alla fine di un'altra stringa. Il EndsWith metodo viene chiamato più volte usando la distinzione tra maiuscole e minuscole e culture diverse che influiscono sui risultati della ricerca.

// This code example demonstrates the 
// System.String.EndsWith(String, ..., CultureInfo) method.

using System;
using System.Threading;
using System.Globalization;

class Sample 
{
    public static void Main() 
    {
        string msg1 = "Search for the target string \"{0}\" in the string \"{1}\".\n";
        string msg2 = "Using the {0} - \"{1}\" culture:";
        string msg3 = "  The string to search ends with the target string: {0}";
        bool result = false;
        CultureInfo ci;

        // Define a target string to search for.
        // U+00c5 = LATIN CAPITAL LETTER A WITH RING ABOVE
        string capitalARing = "\u00c5";

        // Define a string to search. 
        // The result of combining the characters LATIN SMALL LETTER A and COMBINING 
        // RING ABOVE (U+0061, U+030a) is linguistically equivalent to the character 
        // LATIN SMALL LETTER A WITH RING ABOVE (U+00e5).
        string xyzARing = "xyz" + "\u0061\u030a";

        // Display the string to search for and the string to search.
        Console.WriteLine(msg1, capitalARing, xyzARing);

        // Search using English-United States culture.
        ci = new CultureInfo("en-US");
        Console.WriteLine(msg2, ci.DisplayName, ci.Name);

        Console.WriteLine("Case sensitive:");
        result = xyzARing.EndsWith(capitalARing, false, ci);
        Console.WriteLine(msg3, result);

        Console.WriteLine("Case insensitive:");
        result = xyzARing.EndsWith(capitalARing, true, ci);
        Console.WriteLine(msg3, result);
        Console.WriteLine();

        // Search using Swedish-Sweden culture.
        ci = new CultureInfo("sv-SE");
        Console.WriteLine(msg2, ci.DisplayName, ci.Name);

        Console.WriteLine("Case sensitive:");
        result = xyzARing.EndsWith(capitalARing, false, ci);
        Console.WriteLine(msg3, result);

        Console.WriteLine("Case insensitive:");
        result = xyzARing.EndsWith(capitalARing, true, ci);
        Console.WriteLine(msg3, result);
    }
}

/*
This code example produces the following results (for en-us culture):

Search for the target string "Å" in the string "xyza°".

Using the English (United States) - "en-US" culture:
Case sensitive:
  The string to search ends with the target string: False
Case insensitive:
  The string to search ends with the target string: True

Using the Swedish (Sweden) - "sv-SE" culture:
Case sensitive:
  The string to search ends with the target string: False
Case insensitive:
  The string to search ends with the target string: False

*/

// This code example demonstrates the 
// System.String.EndsWith(String, ..., CultureInfo) method.
open System.Globalization

[<EntryPoint>]
let main _ =
    // Define a target string to search for.
    // U+00c5 = LATIN CAPITAL LETTER A WITH RING ABOVE
    let capitalARing = "\u00c5"

    // Define a string to search. 
    // The result of combining the characters LATIN SMALL LETTER A and COMBINING 
    // RING ABOVE (U+0061, U+030a) is linguistically equivalent to the character 
    // LATIN SMALL LETTER A WITH RING ABOVE (U+00e5).
    let xyzARing = "xyz" + "\u0061\u030a"

    // Display the string to search for and the string to search.
    printfn $"Search for the target string \"{capitalARing}\" in the string \"{xyzARing}\".\n"

    // Search using English-United States culture.
    let ci = CultureInfo "en-US"
    printfn $"Using the {ci.DisplayName} - \"{ci.Name}\" culture:"

    printfn "Case sensitive:"
    let result = xyzARing.EndsWith(capitalARing, false, ci)
    printfn $"  The string to search ends with the target string: {result}"

    printfn "Case insensitive:"
    let result = xyzARing.EndsWith(capitalARing, true, ci)
    printfn $"  The string to search ends with the target string: {result}\n"

    // Search using Swedish-Sweden culture.
    let ci = CultureInfo "sv-SE"
    printfn $"Using the {ci.DisplayName} - \"{ci.Name}\" culture:"

    printfn "Case sensitive:"
    let result = xyzARing.EndsWith(capitalARing, false, ci)
    printfn $"  The string to search ends with the target string: {result}"

    printfn "Case insensitive:"
    let result = xyzARing.EndsWith(capitalARing, true, ci)
    printfn $"  The string to search ends with the target string: {result}"
    0
(*
This code example produces the following results (for en-us culture):

Search for the target string "Å" in the string "xyza°".

Using the English (United States) - "en-US" culture:
Case sensitive:
  The string to search ends with the target string: False
Case insensitive:
  The string to search ends with the target string: True

Using the Swedish (Sweden) - "sv-SE" culture:
Case sensitive:
  The string to search ends with the target string: False
Case insensitive:
  The string to search ends with the target string: False
*)

' This code example demonstrates the 
' System.String.EndsWith(String, ..., CultureInfo) method.

Imports System.Threading
Imports System.Globalization

Class Sample
    Public Shared Sub Main() 
        Dim msg1 As String = "Search for the target string ""{0}"" in the string ""{1}""." & vbCrLf
        Dim msg2 As String = "Using the {0} - ""{1}"" culture:"
        Dim msg3 As String = "  The string to search ends with the target string: {0}"
        Dim result As Boolean = False
        Dim ci As CultureInfo
        
        ' Define a target string to search for.
        ' U+00c5 = LATIN CAPITAL LETTER A WITH RING ABOVE
        Dim capitalARing As String = "Å"
        
        ' Define a string to search. 
        ' The result of combining the characters LATIN SMALL LETTER A and COMBINING 
        ' RING ABOVE (U+0061, U+030a) is linguistically equivalent to the character 
        ' LATIN SMALL LETTER A WITH RING ABOVE (U+00e5).
        Dim xyzARing As String = "xyz" & "å"
               
        ' Display the string to search for and the string to search.
        Console.WriteLine(msg1, capitalARing, xyzARing)
        
        ' Search using English-United States culture.
        ci = New CultureInfo("en-US")
        Console.WriteLine(msg2, ci.DisplayName, ci.Name)
        
        Console.WriteLine("Case sensitive:")
        result = xyzARing.EndsWith(capitalARing, False, ci)
        Console.WriteLine(msg3, result)
        
        Console.WriteLine("Case insensitive:")
        result = xyzARing.EndsWith(capitalARing, True, ci)
        Console.WriteLine(msg3, result)
        Console.WriteLine()
        
        ' Search using Swedish-Sweden culture.
        ci = New CultureInfo("sv-SE")
        Console.WriteLine(msg2, ci.DisplayName, ci.Name)
        
        Console.WriteLine("Case sensitive:")
        result = xyzARing.EndsWith(capitalARing, False, ci)
        Console.WriteLine(msg3, result)
        
        Console.WriteLine("Case insensitive:")
        result = xyzARing.EndsWith(capitalARing, True, ci)
        Console.WriteLine(msg3, result)
    
    End Sub
End Class

'This code example produces the following results (for en-us culture):
'
'Search for the target string "Å" in the string "xyza°".
'
'Using the English (United States) - "en-US" culture:
'Case sensitive:
'  The string to search ends with the target string: False
'Case insensitive:
'  The string to search ends with the target string: True
'
'Using the Swedish (Sweden) - "sv-SE" culture:
'Case sensitive:
'  The string to search ends with the target string: False
'Case insensitive:
'  The string to search ends with the target string: False
'

Commenti

Questo metodo confronta il value parametro con la sottostringa alla fine di questa stringa che corrisponde alla stessa lunghezza valuedi e restituisce un valore che indica se sono uguali. Per essere uguale, value deve essere un riferimento a questa stessa istanza o corrispondere alla fine di questa stringa.

Questo metodo esegue un confronto tra parole (sensibili alle impostazioni cultura) usando le maiuscole e le impostazioni cultura specificate.

Vedi anche

Si applica a