StringBuilder.Remove(Int32, Int32) Method

Definition

Rimuove l'intervallo di caratteri specificato da questa istanza.Removes the specified range of characters from this instance.

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

Parameters

startIndex
Int32

Posizione in base zero in questa istanza in cui inizia l'operazione di rimozione.The zero-based position in this instance where removal begins.

length
Int32

Numero di caratteri da rimuovere.The number of characters to remove.

Returns

StringBuilder

Riferimento a questa istanza dopo il completamento dell'operazione di rimozione.A reference to this instance after the excise operation has completed.

Exceptions

Se startIndex o length è minore di zero, oppure startIndex + length è maggiore della lunghezza di questa istanza.If startIndex or length is less than zero, or startIndex + length is greater than the length of this instance.

Examples

Nell'esempio seguente viene illustrato il metodo Remove.The following example demonstrates the Remove method.

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.

*/
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.
'

Remarks

Il metodo corrente rimuove l'intervallo di caratteri specificato dall'istanza corrente.The current method removes the specified range of characters from the current instance. I caratteri in (startIndex + length) vengono spostati in startIndexe il valore stringa dell'istanza corrente viene abbreviato per length.The characters at (startIndex + length) are moved to startIndex, and the string value of the current instance is shortened by length. La capacità dell'istanza corrente non è interessata.The capacity of the current instance is unaffected.

Note

Il metodo Remove modifica il valore dell'istanza di StringBuilder corrente e restituisce tale istanza.The Remove method modifies the value of the current StringBuilder instance and returns that instance. Non crea e restituisce un nuovo oggetto StringBuilder.It does not create and return a new StringBuilder object.

Applies to

See also