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

定義

現在の文字列に出現する指定した Unicode 文字または String をすべて、別の指定した Unicode 文字または String に置換した新しい文字列を返します。Returns a new string in which all occurrences of a specified Unicode character or String in the current string are replaced with another specified Unicode character or String.

オーバーロード

Replace(String, String, Boolean, CultureInfo) Replace(String, String, Boolean, CultureInfo) Replace(String, String, Boolean, CultureInfo) Replace(String, String, Boolean, CultureInfo)
Replace(Char, Char) Replace(Char, Char) Replace(Char, Char) Replace(Char, Char)

このインスタンスに出現する指定された Unicode 文字をすべて、別の指定された Unicode 文字に置換した新しい文字列を返します。Returns a new string in which all occurrences of a specified Unicode character in this instance are replaced with another specified Unicode character.

Replace(String, String) Replace(String, String) Replace(String, String) Replace(String, String)

現在のインスタンスに出現する指定した文字列をすべて、別に指定した文字列に置換した新しい文字列を返します。Returns a new string in which all occurrences of a specified string in the current instance are replaced with another specified string.

Replace(String, String, StringComparison) Replace(String, String, StringComparison) Replace(String, String, StringComparison) Replace(String, String, StringComparison)

Replace(String, String, Boolean, CultureInfo) Replace(String, String, Boolean, CultureInfo) Replace(String, String, Boolean, CultureInfo) Replace(String, String, Boolean, CultureInfo)

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

パラメーター

戻り値

Replace(Char, Char) Replace(Char, Char) Replace(Char, Char) Replace(Char, Char)

このインスタンスに出現する指定された Unicode 文字をすべて、別の指定された Unicode 文字に置換した新しい文字列を返します。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

パラメーター

oldChar
Char Char Char Char

置換する Unicode 文字。The Unicode character to be replaced.

newChar
Char Char Char Char

出現するすべての oldChar を置換する Unicode 文字。The Unicode character to replace all occurrences of oldChar.

戻り値

oldChar のすべてのインスタンスが newChar で置き換えられることを除いて、このインスタンスと等価な文字列。A string that is equivalent to this instance except that all instances of oldChar are replaced with newChar. oldChar が現在のインスタンス内に見つからない場合、メソッドは現在のインスタンスを変更せずに返します。If oldChar is not found in the current instance, the method returns the current instance unchanged.

次の例では、コンマ区切り値リストを作成します。そのためには、一連の数値の間の空白をコンマで区切って指定します。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"

注釈

このメソッドは、検索対象の序数 (大文字と小文字を区別しoldChar、カルチャに依存しない) 検索を実行します。This method performs an ordinal (case-sensitive and culture-insensitive) search to find oldChar.

注意

このメソッドは、現在のインスタンスの値を変更しません。This method does not modify the value of the current instance. 代わりに、のすべてのoldChar出現箇所がにnewChar置き換えられた新しい文字列を返します。Instead, it returns a new string in which all occurrences of oldChar are replaced by newChar.

このメソッドは変更された文字列を返すため、メソッドのReplace連続した呼び出しを連結して、元の文字列に対して複数の置換を実行できます。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. メソッドの呼び出しは左から右に実行されます。Method calls are executed from left to right. 具体的な例を次に示します。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'
こちらもご覧ください

Replace(String, String) Replace(String, String) Replace(String, String) Replace(String, String)

現在のインスタンスに出現する指定した文字列をすべて、別に指定した文字列に置換した新しい文字列を返します。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

パラメーター

oldValue
String String String String

置換される文字列。The string to be replaced.

newValue
String String String String

出現するすべての oldValue を置換する文字列。The string to replace all occurrences of oldValue.

戻り値

oldValue のすべてのインスタンスが newValue で置き換えられることを除いて、現在の文字列と等価な文字列。A string that is equivalent to the current string except that all instances of oldValue are replaced with newValue. oldValue が現在のインスタンス内に見つからない場合、メソッドは現在のインスタンスを変更せずに返します。If oldValue is not found in the current instance, the method returns the current instance unchanged.

例外

oldValue が空の文字列 ("") です。oldValue is the empty string ("").

次の例は、メソッドを使用しReplaceてスペルミスを修正する方法を示しています。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'
//
Imports System

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'
'

注釈

oldValuenewValue の場合、出現するすべてのが削除されます。nullIf newValue is null, all occurrences of oldValue are removed.

注意

このメソッドは、現在のインスタンスの値を変更しません。This method does not modify the value of the current instance. 代わりに、のすべてのoldValue出現箇所がにnewValue置き換えられた新しい文字列を返します。Instead, it returns a new string in which all occurrences of oldValue are replaced by newValue.

このメソッドは、検索対象の序数 (大文字と小文字を区別しoldValue、カルチャに依存しない) 検索を実行します。This method performs an ordinal (case-sensitive and culture-insensitive) search to find oldValue.

このメソッドは変更された文字列を返すため、メソッドのReplace連続した呼び出しを連結して、元の文字列に対して複数の置換を実行できます。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. メソッドの呼び出しは左から右に実行されます。Method calls are executed from left to right. 具体的な例を次に示します。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'
こちらもご覧ください

Replace(String, String, StringComparison) Replace(String, String, StringComparison) Replace(String, String, StringComparison) Replace(String, String, StringComparison)

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

パラメーター

戻り値

適用対象