String.Replace String.Replace String.Replace String.Replace Method

public:
 System::String ^ Replace(System::String ^ oldValue, System::String ^ newValue, bool ignoreCase, System::Globalization::CultureInfo ^ culture);

public string Replace (string oldValue, string newValue, bool ignoreCase, System.Globalization.CultureInfo culture);

member this.Replace : string * string * bool * System.Globalization.CultureInfo -> string

Public Function Replace (oldValue As String, newValue As String, ignoreCase As Boolean, culture As CultureInfo) As String

Parametri

Restituisce

Restituisce una nuova stringa in cui tutte le occorrenze di un carattere Unicode specificato presenti in questa istanza vengono sostituite con un altro carattere Unicode specificato.Returns a new string in which all occurrences of a specified Unicode character in this instance are replaced with another specified Unicode character.

public:
 System::String ^ Replace(char oldChar, char newChar);

public string Replace (char oldChar, char newChar);

member this.Replace : char * char -> string

Public Function Replace (oldChar As Char, newChar As Char) As String

Parametri

Restituisce

Esempi

Nell'esempio seguente viene creato un elenco di valori separati da virgole sostituendo le virgole per gli spazi vuoti tra una serie di numeri.The following example creates a comma separated value list by substituting commas for the blanks between a series of numbers.

using namespace System;
int main()
{
   String^ str = "1 2 3 4 5 6 7 8 9";
   Console::WriteLine( "Original string: \"{0}\"", str );
   Console::WriteLine( "CSV string:      \"{0}\"", str->Replace( ' ', ',' ) );
}

//
// This example produces the following output:
// Original string: "1 2 3 4 5 6 7 8 9"
// CSV string:      "1,2,3,4,5,6,7,8,9"
//

String str = "1 2 3 4 5 6 7 8 9";
Console.WriteLine("Original string: \"{0}\"", str);
Console.WriteLine("CSV string:      \"{0}\"", str.Replace(' ', ','));

// This example produces the following output:
// Original string: "1 2 3 4 5 6 7 8 9"
// CSV string:      "1,2,3,4,5,6,7,8,9"

Class stringReplace1
   Public Shared Sub Main()
      Dim str As [String] = "1 2 3 4 5 6 7 8 9"
      Console.WriteLine("Original string: ""{0}""", str)
      Console.WriteLine("CSV string:      ""{0}""", str.Replace(" "c, ","c))
   End Sub
End Class
' This example produces the following output:
' Original string: "1 2 3 4 5 6 7 8 9"
' CSV string:      "1,2,3,4,5,6,7,8,9"

Commenti

Questo metodo esegue una ricerca ordinale (con distinzione tra maiuscole e minuscole e senza oldChardistinzione delle impostazioni cultura) per trovare.This method performs an ordinal (case-sensitive and culture-insensitive) search to find oldChar.

Poiché questo metodo restituisce la stringa modificata, è possibile concatenare le chiamate successive al Replace metodo per eseguire più sostituzioni sulla stringa originale.Because this method returns the modified string, you can chain together successive calls to the Replace method to perform multiple replacements on the original string. Le chiamate al metodo vengono eseguite da sinistra a destra.Method calls are executed from left to right. Nell'esempio seguente viene illustrato questo concetto.The following example provides an illustration.

String s = new String('a', 3);
Console.WriteLine("The initial string: '{0}'", s);
s = s.Replace('a', 'b').Replace('b', 'c').Replace('c', 'd');
Console.WriteLine("The final string: '{0}'", s);

// The example displays the following output:
//       The initial string: 'aaa'
//       The final string: 'ddd'

Module Example
   Public Sub Main()
      Dim s As New String("a"c, 3)
      Console.WriteLine("The initial string: '{0}'", s)
      s = s.Replace("a"c, "b"c).Replace("b"c, "c"c).Replace("c"c, "d"c)
      Console.WriteLine("The final string: '{0}'", s)
   End Sub
End Module
' The example displays the following output:
'       The initial string: 'aaa'
'       The final string: 'ddd'

Vedi anche

CharCharCharChar

Concat(Object)Concat(Object)Concat(Object)Concat(Object)

Insert(Int32, String)Insert(Int32, String)Insert(Int32, String)Insert(Int32, String)

Join(String, String[])Join(String, String[])Join(String, String[])Join(String, String[])

Remove(Int32, Int32)Remove(Int32, Int32)Remove(Int32, Int32)Remove(Int32, Int32)

Split(Char[])Split(Char[])Split(Char[])Split(Char[])

Substring(Int32)Substring(Int32)Substring(Int32)Substring(Int32)

Trim(Char[])Trim(Char[])Trim(Char[])Trim(Char[])

Restituisce una nuova stringa in cui tutte le occorrenze di una stringa specificata nell'istanza corrente vengono sostituite con un'altra stringa specificata.Returns a new string in which all occurrences of a specified string in the current instance are replaced with another specified string.

public:
 System::String ^ Replace(System::String ^ oldValue, System::String ^ newValue);

public string Replace (string oldValue, string newValue);

member this.Replace : string * string -> string

Public Function Replace (oldValue As String, newValue As String) As String

Parametri

Restituisce

Eccezioni

Esempi

Nell'esempio seguente viene illustrato come è possibile utilizzare Replace il metodo per correggere un errore di ortografia.The following example demonstrates how you can use the Replace method to correct a spelling error.

using namespace System;
int main()
{
   String^ errString = "This docment uses 3 other docments to docment the docmentation";
   Console::WriteLine( "The original string is:\n'{0}'\n", errString );

   // Correct the spelling of S"document".
   String^ correctString = errString->Replace( "docment", "document" );
   Console::WriteLine( "After correcting the string, the result is:\n'{0}'", correctString );
}
//
// This code example produces the following output:
//
// The original string is:
// 'This docment uses 3 other docments to docment the docmentation'
//
// After correcting the string, the result is:
// 'This document uses 3 other documents to document the documentation'
//

string errString = "This docment uses 3 other docments to docment the docmentation";

Console.WriteLine("The original string is:{0}'{1}'{0}", Environment.NewLine, errString);

// Correct the spelling of "document".

string correctString = errString.Replace("docment", "document");

Console.WriteLine("After correcting the string, the result is:{0}'{1}'",
        Environment.NewLine, correctString);

// This code example produces the following output:
//
// The original string is:
// 'This docment uses 3 other docments to docment the docmentation'
//
// After correcting the string, the result is:
// 'This document uses 3 other documents to document the documentation'
//

Public Class ReplaceTest
    
    Public Shared Sub Main()
        Dim errString As String = "This docment uses 3 other docments to docment the docmentation"
                
        Console.WriteLine("The original string is:{0}'{1}'{0}", Environment.NewLine, errString)

        ' Correct the spelling of "document".  
        Dim correctString As String = errString.Replace("docment", "document")
      
        Console.WriteLine("After correcting the string, the result is:{0}'{1}'", Environment.NewLine, correctString)
    End Sub
End Class
'
' This code example produces the following output:
'
' The original string is:
' 'This docment uses 3 other docments to docment the docmentation'
'
' After correcting the string, the result is:
' 'This document uses 3 other documents to document the documentation'
'

Commenti

Se newValue oldValue è null, vengono rimosse tutte le occorrenze di.If newValue is null, all occurrences of oldValue are removed.

Questo metodo esegue una ricerca ordinale (con distinzione tra maiuscole e minuscole e senza oldValuedistinzione delle impostazioni cultura) per trovare.This method performs an ordinal (case-sensitive and culture-insensitive) search to find oldValue.

Poiché questo metodo restituisce la stringa modificata, è possibile concatenare le chiamate successive al Replace metodo per eseguire più sostituzioni sulla stringa originale.Because this method returns the modified string, you can chain together successive calls to the Replace method to perform multiple replacements on the original string. Le chiamate al metodo vengono eseguite da sinistra a destra.Method calls are executed from left to right. Nell'esempio seguente viene illustrato questo concetto.The following example provides an illustration.

String s = "aaa";
Console.WriteLine("The initial string: '{0}'", s);
s = s.Replace("a", "b").Replace("b", "c").Replace("c", "d");
Console.WriteLine("The final string: '{0}'", s);

// The example displays the following output:
//       The initial string: 'aaa'
//       The final string: 'ddd'

Module Example
   Public Sub Main()
      Dim s As String = "aaa"
      Console.WriteLine("The initial string: '{0}'", s)
      s = s.Replace("a", "b").Replace("b", "c").Replace("c", "d")
      Console.WriteLine("The final string: '{0}'", s)
   End Sub
End Module
' The example displays the following output:
'       The initial string: 'aaa'
'       The final string: 'ddd'

Vedi anche

Concat(Object)Concat(Object)Concat(Object)Concat(Object)

Insert(Int32, String)Insert(Int32, String)Insert(Int32, String)Insert(Int32, String)

Join(String, String[])Join(String, String[])Join(String, String[])Join(String, String[])

Remove(Int32, Int32)Remove(Int32, Int32)Remove(Int32, Int32)Remove(Int32, Int32)

Split(Char[])Split(Char[])Split(Char[])Split(Char[])

Substring(Int32)Substring(Int32)Substring(Int32)Substring(Int32)

Trim(Char[])Trim(Char[])Trim(Char[])Trim(Char[])

public:
 System::String ^ Replace(System::String ^ oldValue, System::String ^ newValue, StringComparison comparisonType);

public string Replace (string oldValue, string newValue, StringComparison comparisonType);

member this.Replace : string * string * StringComparison -> string

Public Function Replace (oldValue As String, newValue As String, comparisonType As StringComparison) As String

Parametri

Restituisce