StringBuilder.Clear Método

Definição

Namespace:

System.Text

Assembly:

System.Runtime.dll

Assembly:

netstandard.dll

Assembly:

mscorlib.dll

Remove todos os caracteres da instância StringBuilder atual.

public:
 System::Text::StringBuilder ^ Clear();

public System.Text.StringBuilder Clear ();

member this.Clear : unit -> System.Text.StringBuilder

Public Function Clear () As StringBuilder

Retornos

StringBuilder

Um objeto cujo Length é 0 (zero).

Exemplos

O exemplo a seguir instalita um objeto com uma cadeia de caracteres, chama o método e, em StringBuilder Clear seguida, anexa uma nova cadeia de caracteres.

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)

Comentários

Clear é um método de conveniência equivalente à definição Length da propriedade da instância atual como 0 (zero).