StringBuilder.Clear Methode

Definition

Entfernt alle Zeichen aus der aktuellen StringBuilder-Instanz.Removes all characters from the current StringBuilder instance.

public:
 System::Text::StringBuilder ^ Clear();
public System.Text.StringBuilder Clear ();
member this.Clear : unit -> System.Text.StringBuilder
Public Function Clear () As StringBuilder

Gibt zurück

Ein Objekt, dessen Length 0 (null) ist.An object whose Length is 0 (zero).

Beispiele

Im folgenden Beispiel wird ein StringBuilder -Objekt mit einer Zeichenfolge instanziiert, die Clear -Methode aufgerufen und dann eine neue Zeichenfolge angefügt.The following example instantiates a StringBuilder object with a string, calls the Clear method, and then appends a new string.

using System;
using System.Text;

public class Class1
{
   public static void Main()
   {
      StringBuilder sb = new StringBuilder("This is a string.");
      Console.WriteLine("{0} ({1} characters)", sb.ToString(), sb.Length);
      
      sb.Clear();
      Console.WriteLine("{0} ({1} characters)", sb.ToString(), sb.Length);

      sb.Append("This is a second string.");
      Console.WriteLine("{0} ({1} characters)", sb.ToString(), sb.Length);
   }
}
// The example displays the following output:
//       This is a string. (17 characters)
//        (0 characters)
//       This is a second string. (24 characters)
Imports System.Text

Module Example
   Public Sub Main()
      Dim sb As New StringBuilder("This is a string.")
      Console.WriteLine("{0} ({1} characters)", sb.ToString(), sb.Length)
      
      sb.Clear()
      Console.WriteLine("{0} ({1} characters)", sb.ToString(), sb.Length)

      sb.Append("This is a second string.")
      Console.WriteLine("{0} ({1} characters)", sb.ToString(), sb.Length)
   End Sub            
End Module
' The example displays the following output:
'       This is a string. (17 characters)
'        (0 characters)
'       This is a second string. (24 characters)

Hinweise

Clearist eine Hilfsmethode, die dem Festlegen der Length -Eigenschaft der aktuellen Instanz auf 0 (null) entspricht.Clear is a convenience method that is equivalent to setting the Length property of the current instance to 0 (zero).

Gilt für: