StringBuilder.Remove(Int32, Int32) Metodo

Definizione

Spazio dei nomi:

System.Text

Assembly:

System.Runtime.dll

Origine:

StringBuilder.cs

Rimuove l'intervallo di caratteri specificato da questa istanza.

public:
 System::Text::StringBuilder ^ Remove(int startIndex, int length);

public System.Text.StringBuilder Remove (int startIndex, int length);

member this.Remove : int * int -> System.Text.StringBuilder

Public Function Remove (startIndex As Integer, length As Integer) As StringBuilder

Parametri

startIndex

Int32

Posizione in base zero in questa istanza in cui inizia l'operazione di rimozione.

length

Int32

Numero di caratteri da rimuovere.

Restituisce

StringBuilder

Riferimento a questa istanza dopo il completamento dell'operazione di rimozione.

Eccezioni

ArgumentOutOfRangeException

Se startIndex o length è minore di zero, oppure startIndex + length è maggiore della lunghezza di questa istanza.

Esempio

Nell'esempio seguente viene illustrato il Remove metodo.

using namespace System;
using namespace System::Text;
int main()
{
   String^ rule1 = "0----+----1----+----2----+----3----+----4---";
   String^ rule2 = "01234567890123456789012345678901234567890123";
   String^ str = "The quick brown fox jumps over the lazy dog.";
   StringBuilder^ sb = gcnew StringBuilder( str );
   Console::WriteLine();
   Console::WriteLine( "StringBuilder.Remove method" );
   Console::WriteLine();
   Console::WriteLine( "Original value:" );
   Console::WriteLine( rule1 );
   Console::WriteLine( rule2 );
   Console::WriteLine( "{0}", sb );
   Console::WriteLine();
   sb->Remove( 10, 6 ); // Remove "brown "
   Console::WriteLine( "New value:" );
   Console::WriteLine( rule1 );
   Console::WriteLine( rule2 );
   Console::WriteLine( "{0}", sb );
}

/*
This example produces the following results:

StringBuilder.Remove method

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

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

*/

using System;
using System.Text;

class Sample
{
    public static void Main()
    {
    string rule1 = "0----+----1----+----2----+----3----+----4---";
    string rule2 = "01234567890123456789012345678901234567890123";
    string str =   "The quick brown fox jumps over the lazy dog.";
    StringBuilder sb = new StringBuilder(str);

    Console.WriteLine();
    Console.WriteLine("StringBuilder.Remove method");
    Console.WriteLine();
    Console.WriteLine("Original value:");
    Console.WriteLine(rule1);
    Console.WriteLine(rule2);
    Console.WriteLine("{0}", sb.ToString());
    Console.WriteLine();

    sb.Remove(10, 6); // Remove "brown "

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

StringBuilder.Remove method

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

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

*/

open System.Text

let rule1 = "0----+----1----+----2----+----3----+----4---"
let rule2 = "01234567890123456789012345678901234567890123"
let str = "The quick brown fox jumps over the lazy dog."
let sb = StringBuilder str

printfn "StringBuilder.Remove method\n"
printfn "Original value:"
printfn $"{rule1}"
printfn $"{rule2}"
printfn $"{sb}\n"

sb.Remove(10, 6) |> ignore // Remove "brown "

printfn "New value:"
printfn $"{rule1}"
printfn $"{rule2}"
printfn $"{sb}"

// This example produces the following results:
//       StringBuilder.Remove method
//
//       Original value:
//       0----+----1----+----2----+----3----+----4---
//       01234567890123456789012345678901234567890123
//       The quick brown fox jumps over the lazy dog.
//
//       New value:
//       0----+----1----+----2----+----3----+----4---
//       01234567890123456789012345678901234567890123
//       The quick fox jumps over the lazy dog.

Imports System.Text

Class Sample
   Public Shared Sub Main()
      Dim rule1 As String = "0----+----1----+----2----+----3----+----4---"
      Dim rule2 As String = "01234567890123456789012345678901234567890123"
      Dim str As String   = "The quick brown fox jumps over the lazy dog."
      Dim sb As New StringBuilder(str)
      
      Console.WriteLine()
      Console.WriteLine("StringBuilder.Remove method")
      Console.WriteLine()
      Console.WriteLine("Original value:")
      Console.WriteLine(rule1)
      Console.WriteLine(rule2)
      Console.WriteLine("{0}", sb.ToString())
      Console.WriteLine()
      
      sb.Remove(10, 6) ' Remove "brown "

      Console.WriteLine("New value:")
      Console.WriteLine(rule1)
      Console.WriteLine(rule2)
      Console.WriteLine("{0}", sb.ToString())
   End Sub
End Class
'
'This example produces the following results:
'
'StringBuilder.Remove method
'
'Original value:
'0----+----1----+----2----+----3----+----4---
'01234567890123456789012345678901234567890123
'The quick brown fox jumps over the lazy dog.
'
'New value:
'0----+----1----+----2----+----3----+----4---
'01234567890123456789012345678901234567890123
'The quick fox jumps over the lazy dog.
'

Commenti

Il metodo corrente rimuove l'intervallo di caratteri specificato dall'istanza corrente. I caratteri in (startIndex + length) vengono spostati in startIndexe il valore stringa dell'istanza corrente viene abbreviato da length. La capacità dell'istanza corrente non è influenzata.

Nota

Il Remove metodo modifica il valore dell'istanza corrente StringBuilder e restituisce tale istanza. Non crea e restituisce un nuovo StringBuilder oggetto.

Vedi anche

• Replace(String, String)