StringBuilder.Replace StringBuilder.Replace StringBuilder.Replace StringBuilder.Replace Method

Definition

Replaces all occurrences of a specified character or string in this instance with another specified character or string.

Overloads

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

Replaces all occurrences of a specified character in this instance with another specified character.

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

Replaces all occurrences of a specified string in this instance with another specified string.

Replace(Char, Char, Int32, Int32) Replace(Char, Char, Int32, Int32) Replace(Char, Char, Int32, Int32) Replace(Char, Char, Int32, Int32)

Replaces, within a substring of this instance, all occurrences of a specified character with another specified character.

Replace(String, String, Int32, Int32) Replace(String, String, Int32, Int32) Replace(String, String, Int32, Int32) Replace(String, String, Int32, Int32)

Replaces, within a substring of this instance, all occurrences of a specified string with another specified string.

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

Replaces all occurrences of a specified character in this instance with another specified character.

public:
 System::Text::StringBuilder ^ Replace(char oldChar, char newChar);
public System.Text.StringBuilder Replace (char oldChar, char newChar);
member this.Replace : char * char -> System.Text.StringBuilder
Public Function Replace (oldChar As Char, newChar As Char) As StringBuilder
Parameters
oldChar
Char Char Char Char

The character to replace.

newChar
Char Char Char Char

The character that replaces oldChar.

Returns

A reference to this instance with oldChar replaced by newChar.

Examples

The following example demonstrates the Replace method.

using namespace System;
using namespace System::Text;
void Show( StringBuilder^ sbs )
{
   String^ rule1 = "0----+----1----+----2----+----3----+----4---";
   String^ rule2 = "01234567890123456789012345678901234567890123";
   Console::WriteLine( rule1 );
   Console::WriteLine( rule2 );
   Console::WriteLine( "{0}", sbs );
   Console::WriteLine();
}

int main()
{
   
   //                  0----+----1----+----2----+----3----+----4---
   //                  01234567890123456789012345678901234567890123
   String^ str = "The quick br!wn d#g jumps #ver the lazy cat.";
   StringBuilder^ sb = gcnew StringBuilder( str );
   Console::WriteLine();
   Console::WriteLine( "StringBuilder.Replace method" );
   Console::WriteLine();
   Console::WriteLine( "Original value:" );
   Show( sb );
   sb->Replace( '#', '!', 15, 29 ); // Some '#' -> '!'
   Show( sb );
   sb->Replace( '!', 'o' ); // All '!' -> 'o'
   Show( sb );
   sb->Replace( "cat", "dog" ); // All "cat" -> "dog"
   Show( sb );
   sb->Replace( "dog", "fox", 15, 20 ); // Some "dog" -> "fox"
   Console::WriteLine( "Final value:" );
   Show( sb );
}

/*
This example produces the following results:

StringBuilder.Replace method

Original value:
0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick br!wn d#g jumps #ver the lazy cat.

0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick br!wn d!g jumps !ver the lazy cat.

0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick brown dog jumps over the lazy cat.

0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick brown dog jumps over the lazy dog.

Final value:
0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick brown fox jumps over the lazy dog.

*/
using System;
using System.Text;

class Sample 
{
    public static void Main() 
    {
//                0----+----1----+----2----+----3----+----4---
//                01234567890123456789012345678901234567890123
    string str = "The quick br!wn d#g jumps #ver the lazy cat.";
    StringBuilder sb = new StringBuilder(str);

    Console.WriteLine();
    Console.WriteLine("StringBuilder.Replace method");
    Console.WriteLine();

    Console.WriteLine("Original value:");
    Show(sb);

    sb.Replace('#', '!', 15, 29);        // Some '#' -> '!'
    Show(sb);
    sb.Replace('!', 'o');                // All '!' -> 'o'
    Show(sb);
    sb.Replace("cat", "dog");            // All "cat" -> "dog"
    Show(sb);
    sb.Replace("dog", "fox", 15, 20);    // Some "dog" -> "fox"

    Console.WriteLine("Final value:");
    Show(sb);
    }

    public static void Show(StringBuilder sbs)
    {
    string rule1 = "0----+----1----+----2----+----3----+----4---";
    string rule2 = "01234567890123456789012345678901234567890123";

    Console.WriteLine(rule1);
    Console.WriteLine(rule2);
    Console.WriteLine("{0}", sbs.ToString());
    Console.WriteLine();
    }
}
/*
This example produces the following results:

StringBuilder.Replace method

Original value:
0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick br!wn d#g jumps #ver the lazy cat.

0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick br!wn d!g jumps !ver the lazy cat.

0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick brown dog jumps over the lazy cat.

0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick brown dog jumps over the lazy dog.

Final value:
0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick brown fox jumps over the lazy dog.

*/
Imports System
Imports System.Text

Class Sample
   Public Shared Sub Main()
      '                    0----+----1----+----2----+----3----+----4---
      '                    01234567890123456789012345678901234567890123
      Dim str As String = "The quick br!wn d#g jumps #ver the lazy cat."
      Dim sb As New StringBuilder(str)
      
      Console.WriteLine()
      Console.WriteLine("StringBuilder.Replace method")
      Console.WriteLine()
      
      Console.WriteLine("Original value:")
      Show(sb)
      
      sb.Replace("#"c, "!"c, 15, 29)   ' Some '#' -> '!'
      Show(sb)
      sb.Replace("!"c, "o"c)           ' All '!' -> 'o'
      Show(sb)
      sb.Replace("cat", "dog")         ' All "cat" -> "dog"
      Show(sb)
      sb.Replace("dog", "fox", 15, 20) ' Some "dog" -> "fox"
      Console.WriteLine("Final value:")
      Show(sb)
   End Sub 'Main
   
   Public Shared Sub Show(sbs As StringBuilder)
      Dim rule1 As String = "0----+----1----+----2----+----3----+----4---"
      Dim rule2 As String = "01234567890123456789012345678901234567890123"
      
      Console.WriteLine(rule1)
      Console.WriteLine(rule2)
      Console.WriteLine("{0}", sbs.ToString())
      Console.WriteLine()
   End Sub 'Show
End Class 'Sample
'
'This example produces the following results:
'
'StringBuilder.Replace method
'
'Original value:
'0----+----1----+----2----+----3----+----4---
'01234567890123456789012345678901234567890123
'The quick br!wn d#g jumps #ver the lazy cat.
'
'0----+----1----+----2----+----3----+----4---
'01234567890123456789012345678901234567890123
'The quick br!wn d!g jumps !ver the lazy cat.
'
'0----+----1----+----2----+----3----+----4---
'01234567890123456789012345678901234567890123
'The quick brown dog jumps over the lazy cat.
'
'0----+----1----+----2----+----3----+----4---
'01234567890123456789012345678901234567890123
'The quick brown dog jumps over the lazy dog.
'
'Final value:
'0----+----1----+----2----+----3----+----4---
'01234567890123456789012345678901234567890123
'The quick brown fox jumps over the lazy dog.
'

Remarks

This method performs an ordinal, case-sensitive comparison to identify occurrences of oldChar in the current instance. The size of the current StringBuilder instance is unchanged after the replacement.

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

Replaces all occurrences of a specified string in this instance with another specified string.

public:
 System::Text::StringBuilder ^ Replace(System::String ^ oldValue, System::String ^ newValue);
public System.Text.StringBuilder Replace (string oldValue, string newValue);
member this.Replace : string * string -> System.Text.StringBuilder
Public Function Replace (oldValue As String, newValue As String) As StringBuilder
Parameters
oldValue
String String String String

The string to replace.

newValue
String String String String

The string that replaces oldValue, or null.

Returns

A reference to this instance with all instances of oldValue replaced by newValue.

Exceptions

Examples

The following example demonstrates the Replace method.

using namespace System;
using namespace System::Text;
void Show( StringBuilder^ sbs )
{
   String^ rule1 = "0----+----1----+----2----+----3----+----4---";
   String^ rule2 = "01234567890123456789012345678901234567890123";
   Console::WriteLine( rule1 );
   Console::WriteLine( rule2 );
   Console::WriteLine( "{0}", sbs );
   Console::WriteLine();
}

int main()
{
   
   //                  0----+----1----+----2----+----3----+----4---
   //                  01234567890123456789012345678901234567890123
   String^ str = "The quick br!wn d#g jumps #ver the lazy cat.";
   StringBuilder^ sb = gcnew StringBuilder( str );
   Console::WriteLine();
   Console::WriteLine( "StringBuilder.Replace method" );
   Console::WriteLine();
   Console::WriteLine( "Original value:" );
   Show( sb );
   sb->Replace( '#', '!', 15, 29 ); // Some '#' -> '!'
   Show( sb );
   sb->Replace( '!', 'o' ); // All '!' -> 'o'
   Show( sb );
   sb->Replace( "cat", "dog" ); // All "cat" -> "dog"
   Show( sb );
   sb->Replace( "dog", "fox", 15, 20 ); // Some "dog" -> "fox"
   Console::WriteLine( "Final value:" );
   Show( sb );
}

/*
This example produces the following results:

StringBuilder.Replace method

Original value:
0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick br!wn d#g jumps #ver the lazy cat.

0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick br!wn d!g jumps !ver the lazy cat.

0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick brown dog jumps over the lazy cat.

0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick brown dog jumps over the lazy dog.

Final value:
0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick brown fox jumps over the lazy dog.

*/
using System;
using System.Text;

class Sample 
{
    public static void Main() 
    {
//                0----+----1----+----2----+----3----+----4---
//                01234567890123456789012345678901234567890123
    string str = "The quick br!wn d#g jumps #ver the lazy cat.";
    StringBuilder sb = new StringBuilder(str);

    Console.WriteLine();
    Console.WriteLine("StringBuilder.Replace method");
    Console.WriteLine();

    Console.WriteLine("Original value:");
    Show(sb);

    sb.Replace('#', '!', 15, 29);        // Some '#' -> '!'
    Show(sb);
    sb.Replace('!', 'o');                // All '!' -> 'o'
    Show(sb);
    sb.Replace("cat", "dog");            // All "cat" -> "dog"
    Show(sb);
    sb.Replace("dog", "fox", 15, 20);    // Some "dog" -> "fox"

    Console.WriteLine("Final value:");
    Show(sb);
    }

    public static void Show(StringBuilder sbs)
    {
    string rule1 = "0----+----1----+----2----+----3----+----4---";
    string rule2 = "01234567890123456789012345678901234567890123";

    Console.WriteLine(rule1);
    Console.WriteLine(rule2);
    Console.WriteLine("{0}", sbs.ToString());
    Console.WriteLine();
    }
}
/*
This example produces the following results:

StringBuilder.Replace method

Original value:
0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick br!wn d#g jumps #ver the lazy cat.

0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick br!wn d!g jumps !ver the lazy cat.

0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick brown dog jumps over the lazy cat.

0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick brown dog jumps over the lazy dog.

Final value:
0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick brown fox jumps over the lazy dog.

*/
Imports System
Imports System.Text

Class Sample
   Public Shared Sub Main()
      '                    0----+----1----+----2----+----3----+----4---
      '                    01234567890123456789012345678901234567890123
      Dim str As String = "The quick br!wn d#g jumps #ver the lazy cat."
      Dim sb As New StringBuilder(str)
      
      Console.WriteLine()
      Console.WriteLine("StringBuilder.Replace method")
      Console.WriteLine()
      
      Console.WriteLine("Original value:")
      Show(sb)
      
      sb.Replace("#"c, "!"c, 15, 29)   ' Some '#' -> '!'
      Show(sb)
      sb.Replace("!"c, "o"c)           ' All '!' -> 'o'
      Show(sb)
      sb.Replace("cat", "dog")         ' All "cat" -> "dog"
      Show(sb)
      sb.Replace("dog", "fox", 15, 20) ' Some "dog" -> "fox"
      Console.WriteLine("Final value:")
      Show(sb)
   End Sub 'Main
   
   Public Shared Sub Show(sbs As StringBuilder)
      Dim rule1 As String = "0----+----1----+----2----+----3----+----4---"
      Dim rule2 As String = "01234567890123456789012345678901234567890123"
      
      Console.WriteLine(rule1)
      Console.WriteLine(rule2)
      Console.WriteLine("{0}", sbs.ToString())
      Console.WriteLine()
   End Sub 'Show
End Class 'Sample
'
'This example produces the following results:
'
'StringBuilder.Replace method
'
'Original value:
'0----+----1----+----2----+----3----+----4---
'01234567890123456789012345678901234567890123
'The quick br!wn d#g jumps #ver the lazy cat.
'
'0----+----1----+----2----+----3----+----4---
'01234567890123456789012345678901234567890123
'The quick br!wn d!g jumps !ver the lazy cat.
'
'0----+----1----+----2----+----3----+----4---
'01234567890123456789012345678901234567890123
'The quick brown dog jumps over the lazy cat.
'
'0----+----1----+----2----+----3----+----4---
'01234567890123456789012345678901234567890123
'The quick brown dog jumps over the lazy dog.
'
'Final value:
'0----+----1----+----2----+----3----+----4---
'01234567890123456789012345678901234567890123
'The quick brown fox jumps over the lazy dog.
'

Remarks

This method performs an ordinal, case-sensitive comparison to identify occurrences of oldValue in the current instance. If newValue is null or String.Empty, all occurrences of oldValue are removed.

See Also

Replace(Char, Char, Int32, Int32) Replace(Char, Char, Int32, Int32) Replace(Char, Char, Int32, Int32) Replace(Char, Char, Int32, Int32)

Replaces, within a substring of this instance, all occurrences of a specified character with another specified character.

public:
 System::Text::StringBuilder ^ Replace(char oldChar, char newChar, int startIndex, int count);
public System.Text.StringBuilder Replace (char oldChar, char newChar, int startIndex, int count);
member this.Replace : char * char * int * int -> System.Text.StringBuilder
Public Function Replace (oldChar As Char, newChar As Char, startIndex As Integer, count As Integer) As StringBuilder
Parameters
oldChar
Char Char Char Char

The character to replace.

newChar
Char Char Char Char

The character that replaces oldChar.

startIndex
Int32 Int32 Int32 Int32

The position in this instance where the substring begins.

count
Int32 Int32 Int32 Int32

The length of the substring.

Returns

A reference to this instance with oldChar replaced by newChar in the range from startIndex to startIndex + count -1.

Exceptions

startIndex + count is greater than the length of the value of this instance.

-or-

startIndex or count is less than zero.

Examples

The following example demonstrates the Replace method.

using namespace System;
using namespace System::Text;
void Show( StringBuilder^ sbs )
{
   String^ rule1 = "0----+----1----+----2----+----3----+----4---";
   String^ rule2 = "01234567890123456789012345678901234567890123";
   Console::WriteLine( rule1 );
   Console::WriteLine( rule2 );
   Console::WriteLine( "{0}", sbs );
   Console::WriteLine();
}

int main()
{
   
   //                  0----+----1----+----2----+----3----+----4---
   //                  01234567890123456789012345678901234567890123
   String^ str = "The quick br!wn d#g jumps #ver the lazy cat.";
   StringBuilder^ sb = gcnew StringBuilder( str );
   Console::WriteLine();
   Console::WriteLine( "StringBuilder.Replace method" );
   Console::WriteLine();
   Console::WriteLine( "Original value:" );
   Show( sb );
   sb->Replace( '#', '!', 15, 29 ); // Some '#' -> '!'
   Show( sb );
   sb->Replace( '!', 'o' ); // All '!' -> 'o'
   Show( sb );
   sb->Replace( "cat", "dog" ); // All "cat" -> "dog"
   Show( sb );
   sb->Replace( "dog", "fox", 15, 20 ); // Some "dog" -> "fox"
   Console::WriteLine( "Final value:" );
   Show( sb );
}

/*
This example produces the following results:

StringBuilder.Replace method

Original value:
0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick br!wn d#g jumps #ver the lazy cat.

0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick br!wn d!g jumps !ver the lazy cat.

0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick brown dog jumps over the lazy cat.

0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick brown dog jumps over the lazy dog.

Final value:
0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick brown fox jumps over the lazy dog.

*/
using System;
using System.Text;

class Sample 
{
    public static void Main() 
    {
//                0----+----1----+----2----+----3----+----4---
//                01234567890123456789012345678901234567890123
    string str = "The quick br!wn d#g jumps #ver the lazy cat.";
    StringBuilder sb = new StringBuilder(str);

    Console.WriteLine();
    Console.WriteLine("StringBuilder.Replace method");
    Console.WriteLine();

    Console.WriteLine("Original value:");
    Show(sb);

    sb.Replace('#', '!', 15, 29);        // Some '#' -> '!'
    Show(sb);
    sb.Replace('!', 'o');                // All '!' -> 'o'
    Show(sb);
    sb.Replace("cat", "dog");            // All "cat" -> "dog"
    Show(sb);
    sb.Replace("dog", "fox", 15, 20);    // Some "dog" -> "fox"

    Console.WriteLine("Final value:");
    Show(sb);
    }

    public static void Show(StringBuilder sbs)
    {
    string rule1 = "0----+----1----+----2----+----3----+----4---";
    string rule2 = "01234567890123456789012345678901234567890123";

    Console.WriteLine(rule1);
    Console.WriteLine(rule2);
    Console.WriteLine("{0}", sbs.ToString());
    Console.WriteLine();
    }
}
/*
This example produces the following results:

StringBuilder.Replace method

Original value:
0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick br!wn d#g jumps #ver the lazy cat.

0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick br!wn d!g jumps !ver the lazy cat.

0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick brown dog jumps over the lazy cat.

0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick brown dog jumps over the lazy dog.

Final value:
0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick brown fox jumps over the lazy dog.

*/
Imports System
Imports System.Text

Class Sample
   Public Shared Sub Main()
      '                    0----+----1----+----2----+----3----+----4---
      '                    01234567890123456789012345678901234567890123
      Dim str As String = "The quick br!wn d#g jumps #ver the lazy cat."
      Dim sb As New StringBuilder(str)
      
      Console.WriteLine()
      Console.WriteLine("StringBuilder.Replace method")
      Console.WriteLine()
      
      Console.WriteLine("Original value:")
      Show(sb)
      
      sb.Replace("#"c, "!"c, 15, 29)   ' Some '#' -> '!'
      Show(sb)
      sb.Replace("!"c, "o"c)           ' All '!' -> 'o'
      Show(sb)
      sb.Replace("cat", "dog")         ' All "cat" -> "dog"
      Show(sb)
      sb.Replace("dog", "fox", 15, 20) ' Some "dog" -> "fox"
      Console.WriteLine("Final value:")
      Show(sb)
   End Sub 'Main
   
   Public Shared Sub Show(sbs As StringBuilder)
      Dim rule1 As String = "0----+----1----+----2----+----3----+----4---"
      Dim rule2 As String = "01234567890123456789012345678901234567890123"
      
      Console.WriteLine(rule1)
      Console.WriteLine(rule2)
      Console.WriteLine("{0}", sbs.ToString())
      Console.WriteLine()
   End Sub 'Show
End Class 'Sample
'
'This example produces the following results:
'
'StringBuilder.Replace method
'
'Original value:
'0----+----1----+----2----+----3----+----4---
'01234567890123456789012345678901234567890123
'The quick br!wn d#g jumps #ver the lazy cat.
'
'0----+----1----+----2----+----3----+----4---
'01234567890123456789012345678901234567890123
'The quick br!wn d!g jumps !ver the lazy cat.
'
'0----+----1----+----2----+----3----+----4---
'01234567890123456789012345678901234567890123
'The quick brown dog jumps over the lazy cat.
'
'0----+----1----+----2----+----3----+----4---
'01234567890123456789012345678901234567890123
'The quick brown dog jumps over the lazy dog.
'
'Final value:
'0----+----1----+----2----+----3----+----4---
'01234567890123456789012345678901234567890123
'The quick brown fox jumps over the lazy dog.
'

Remarks

This method performs an ordinal, case-sensitive comparison to identify occurrences of oldChar in the current instance. The size of the current StringBuilder object is unchanged after the replacement.

Replace(String, String, Int32, Int32) Replace(String, String, Int32, Int32) Replace(String, String, Int32, Int32) Replace(String, String, Int32, Int32)

Replaces, within a substring of this instance, all occurrences of a specified string with another specified string.

public:
 System::Text::StringBuilder ^ Replace(System::String ^ oldValue, System::String ^ newValue, int startIndex, int count);
public System.Text.StringBuilder Replace (string oldValue, string newValue, int startIndex, int count);
member this.Replace : string * string * int * int -> System.Text.StringBuilder
Public Function Replace (oldValue As String, newValue As String, startIndex As Integer, count As Integer) As StringBuilder
Parameters
oldValue
String String String String

The string to replace.

newValue
String String String String

The string that replaces oldValue, or null.

startIndex
Int32 Int32 Int32 Int32

The position in this instance where the substring begins.

count
Int32 Int32 Int32 Int32

The length of the substring.

Returns

A reference to this instance with all instances of oldValue replaced by newValue in the range from startIndex to startIndex + count - 1.

Exceptions

startIndex or count is less than zero.

-or-

startIndex plus count indicates a character position not within this instance.

-or-

Enlarging the value of this instance would exceed MaxCapacity.

Examples

The following example demonstrates the Replace method.

using namespace System;
using namespace System::Text;
void Show( StringBuilder^ sbs )
{
   String^ rule1 = "0----+----1----+----2----+----3----+----4---";
   String^ rule2 = "01234567890123456789012345678901234567890123";
   Console::WriteLine( rule1 );
   Console::WriteLine( rule2 );
   Console::WriteLine( "{0}", sbs );
   Console::WriteLine();
}

int main()
{
   
   //                  0----+----1----+----2----+----3----+----4---
   //                  01234567890123456789012345678901234567890123
   String^ str = "The quick br!wn d#g jumps #ver the lazy cat.";
   StringBuilder^ sb = gcnew StringBuilder( str );
   Console::WriteLine();
   Console::WriteLine( "StringBuilder.Replace method" );
   Console::WriteLine();
   Console::WriteLine( "Original value:" );
   Show( sb );
   sb->Replace( '#', '!', 15, 29 ); // Some '#' -> '!'
   Show( sb );
   sb->Replace( '!', 'o' ); // All '!' -> 'o'
   Show( sb );
   sb->Replace( "cat", "dog" ); // All "cat" -> "dog"
   Show( sb );
   sb->Replace( "dog", "fox", 15, 20 ); // Some "dog" -> "fox"
   Console::WriteLine( "Final value:" );
   Show( sb );
}

/*
This example produces the following results:

StringBuilder.Replace method

Original value:
0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick br!wn d#g jumps #ver the lazy cat.

0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick br!wn d!g jumps !ver the lazy cat.

0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick brown dog jumps over the lazy cat.

0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick brown dog jumps over the lazy dog.

Final value:
0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick brown fox jumps over the lazy dog.

*/
using System;
using System.Text;

class Sample 
{
    public static void Main() 
    {
//                0----+----1----+----2----+----3----+----4---
//                01234567890123456789012345678901234567890123
    string str = "The quick br!wn d#g jumps #ver the lazy cat.";
    StringBuilder sb = new StringBuilder(str);

    Console.WriteLine();
    Console.WriteLine("StringBuilder.Replace method");
    Console.WriteLine();

    Console.WriteLine("Original value:");
    Show(sb);

    sb.Replace('#', '!', 15, 29);        // Some '#' -> '!'
    Show(sb);
    sb.Replace('!', 'o');                // All '!' -> 'o'
    Show(sb);
    sb.Replace("cat", "dog");            // All "cat" -> "dog"
    Show(sb);
    sb.Replace("dog", "fox", 15, 20);    // Some "dog" -> "fox"

    Console.WriteLine("Final value:");
    Show(sb);
    }

    public static void Show(StringBuilder sbs)
    {
    string rule1 = "0----+----1----+----2----+----3----+----4---";
    string rule2 = "01234567890123456789012345678901234567890123";

    Console.WriteLine(rule1);
    Console.WriteLine(rule2);
    Console.WriteLine("{0}", sbs.ToString());
    Console.WriteLine();
    }
}
/*
This example produces the following results:

StringBuilder.Replace method

Original value:
0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick br!wn d#g jumps #ver the lazy cat.

0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick br!wn d!g jumps !ver the lazy cat.

0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick brown dog jumps over the lazy cat.

0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick brown dog jumps over the lazy dog.

Final value:
0----+----1----+----2----+----3----+----4---
01234567890123456789012345678901234567890123
The quick brown fox jumps over the lazy dog.

*/
Imports System
Imports System.Text

Class Sample
   Public Shared Sub Main()
      '                    0----+----1----+----2----+----3----+----4---
      '                    01234567890123456789012345678901234567890123
      Dim str As String = "The quick br!wn d#g jumps #ver the lazy cat."
      Dim sb As New StringBuilder(str)
      
      Console.WriteLine()
      Console.WriteLine("StringBuilder.Replace method")
      Console.WriteLine()
      
      Console.WriteLine("Original value:")
      Show(sb)
      
      sb.Replace("#"c, "!"c, 15, 29)   ' Some '#' -> '!'
      Show(sb)
      sb.Replace("!"c, "o"c)           ' All '!' -> 'o'
      Show(sb)
      sb.Replace("cat", "dog")         ' All "cat" -> "dog"
      Show(sb)
      sb.Replace("dog", "fox", 15, 20) ' Some "dog" -> "fox"
      Console.WriteLine("Final value:")
      Show(sb)
   End Sub 'Main
   
   Public Shared Sub Show(sbs As StringBuilder)
      Dim rule1 As String = "0----+----1----+----2----+----3----+----4---"
      Dim rule2 As String = "01234567890123456789012345678901234567890123"
      
      Console.WriteLine(rule1)
      Console.WriteLine(rule2)
      Console.WriteLine("{0}", sbs.ToString())
      Console.WriteLine()
   End Sub 'Show
End Class 'Sample
'
'This example produces the following results:
'
'StringBuilder.Replace method
'
'Original value:
'0----+----1----+----2----+----3----+----4---
'01234567890123456789012345678901234567890123
'The quick br!wn d#g jumps #ver the lazy cat.
'
'0----+----1----+----2----+----3----+----4---
'01234567890123456789012345678901234567890123
'The quick br!wn d!g jumps !ver the lazy cat.
'
'0----+----1----+----2----+----3----+----4---
'01234567890123456789012345678901234567890123
'The quick brown dog jumps over the lazy cat.
'
'0----+----1----+----2----+----3----+----4---
'01234567890123456789012345678901234567890123
'The quick brown dog jumps over the lazy dog.
'
'Final value:
'0----+----1----+----2----+----3----+----4---
'01234567890123456789012345678901234567890123
'The quick brown fox jumps over the lazy dog.
'

Remarks

This method performs an ordinal, case-sensitive comparison to identify occurrences of oldValue in the specified substring. If newValue is null or String.Empty, all occurrences of oldValue are removed.

See Also

Applies to