StringBuilder.Clear StringBuilder.Clear StringBuilder.Clear StringBuilder.Clear Method

Définition

Supprime tous les caractères de l'instance StringBuilder actuelle.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

Retours

Objet dont Length est égal à 0 (zéro).An object whose Length is 0 (zero).

Exemples

L’exemple suivant instancie un StringBuilder objet avec une chaîne, appelle la Clear méthode, puis ajoute une nouvelle chaîne.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)

Remarques

Clearest une méthode pratique qui est équivalente à la Length définition de la propriété de l’instance actuelle à 0 (zéro).Clear is a convenience method that is equivalent to setting the Length property of the current instance to 0 (zero).

S’applique à