String.Length String.Length String.Length String.Length Property

Definición

Obtiene el número de caracteres del objeto String actual.Gets the number of characters in the current String object.

public:
 property int Length { int get(); };
public int Length { get; }
member this.Length : int
Public ReadOnly Property Length As Integer

Valor de propiedad

Número de caracteres de la cadena actual.The number of characters in the current string.

Ejemplos

En el ejemplo siguiente se muestra el Length propiedad.The following example demonstrates the Length property.

// Sample for String::Length
using namespace System;
int main()
{
   String^ str = "abcdefg";
   Console::WriteLine( "1) The length of '{0}' is {1}", str, str->Length );
   Console::WriteLine( "2) The length of '{0}' is {1}", "xyz", ((String^)"xyz")->Length );
   int length = str->Length;
   Console::WriteLine( "1) The length of '{0}' is {1}", str, length );
}

/*
This example displays the following output:
   1) The length of 'abcdefg' is 7
   2) The length of 'xyz' is 3
   3) The length of 'abcdefg' is 7
*/
using System;

class Sample 
{
    public static void Main() 
    {
       string str = "abcdefg";
       Console.WriteLine("1) The length of '{0}' is {1}", str, str.Length);
       Console.WriteLine("2) The length of '{0}' is {1}", "xyz", "xyz".Length);
       
       int length = str.Length;
       Console.WriteLine("3) The length of '{0}' is {1}", str, length);
    }
}
// This example displays the following output:
//    1) The length of 'abcdefg' is 7
//    2) The length of 'xyz' is 3
//    3) The length of 'abcdefg' is 7
Class Sample
   Public Shared Sub Main()
      Dim str As String = "abcdefg"
      Console.WriteLine("1) The length of '{0}' is {1}", str, str.Length)
      Console.WriteLine("2) The length of '{0}' is {1}", "xyz", "xyz".Length)
      Dim length As Integer = str.Length
      Console.WriteLine("1) The length of '{0}' is {1}", str, length)
   End Sub 'Main
End Class 'Sample
'
'This example displays the following output:
'    1) The length of 'abcdefg' is 7
'    2) The length of 'xyz' is 3
'    3) The length of 'abcdefg' is 7

Comentarios

El Length propiedad devuelve el número de Char objetos en esta instancia, no el número de caracteres Unicode.The Length property returns the number of Char objects in this instance, not the number of Unicode characters. El motivo es que se puede representar un carácter Unicode por más de un Char.The reason is that a Unicode character might be represented by more than one Char. Use la System.Globalization.StringInfo clase para trabajar con cada carácter Unicode en lugar de cada uno Char.Use the System.Globalization.StringInfo class to work with each Unicode character instead of each Char.

En algunos lenguajes, como C y C++, un carácter null indica el final de una cadena.In some languages, such as C and C++, a null character indicates the end of a string. En. NET, se puede incrustar un carácter nulo en una cadena.In .NET, a null character can be embedded in a string. Cuando una cadena incluye uno o varios caracteres nulos, se incluyen en la longitud de la cadena completa.When a string includes one or more null characters, they are included in the length of the total string. Por ejemplo, en la siguiente cadena, las subcadenas "abc" y "def" están separados por un carácter nulo.For example, in the following string, the substrings "abc" and "def" are separated by a null character. El Length propiedad devuelve 7, lo que indica que incluye los seis caracteres alfabéticos, así como el carácter nulo.The Length property returns 7, which indicates that it includes the six alphabetic characters as well as the null character.

using namespace System;
using namespace System::Text;

void main()
{
   String^ characters = "abc" + L'0' + "def";
   Console::WriteLine(characters->Length);        // Displays 7
}
using System;
using System.Text;

public class StringClassTest
{
   public static void Main()
   {
      string characters = "abc\u0000def";
      Console.WriteLine(characters.Length);    // Displays 7
   }
}
Imports System.Text

Module Example

   Public Sub Main()
      Dim characters As String = "abc" + ChrW(0) + "def"
      Console.WriteLine(characters.Length)       ' Displays 7
   End Sub
End Module

Se aplica a

Consulte también: