Exportar (0) Imprimir
Expandir todo

String.Split (Método) (Char[], StringSplitOptions)

Devuelve una matriz de String que contiene las subcadenas de esta cadena que están delimitadas por elementos de una matriz de Char especificada. Un parámetro especifica si se van a devolver elementos de matriz vacíos.

Espacio de nombres: System
Ensamblado: mscorlib (en mscorlib.dll)

[ComVisibleAttribute(false)] 
public string[] Split (
	char[] separator,
	StringSplitOptions options
)
/** @attribute ComVisibleAttribute(false) */ 
public String[] Split (
	char[] separator, 
	StringSplitOptions options
)
ComVisibleAttribute(false) 
public function Split (
	separator : char[], 
	options : StringSplitOptions
) : String[]
No aplicable.

Parámetros

separator

Matriz de caracteres Unicode que delimitan las subcadenas de esta cadena, una matriz vacía sin delimitadores o referencia null (Nothing en Visual Basic).

options

Especifique RemoveEmptyEntries para omitir los elementos de matriz vacíos de la matriz devuelta; o None para incluir los elementos de matriz vacíos en la matriz devuelta.

Valor devuelto

Una matriz cuyos elementos contienen las subcadenas de esta cadena que están delimitadas por uno o varios caracteres de separator. Para obtener más información, vea la sección Comentarios.

Tipo de excepciónCondición

ArgumentException

options no es uno de los valores de StringSplitOptions.

Los caracteres delimitadores no se incluyen en los elementos de la matriz de valores devueltos. Los delimitadores se detectan utilizando una comparación de ordinales.

Si esta instancia no contiene ninguno de los caracteres de separator, la matriz de valores devueltos constará de un solo elemento que contiene esta instancia. Si el parámetro separator es referencia null (Nothing en Visual Basic) o no contiene caracteres, se supone que los caracteres de espacio en blanco son los delimitadores.

Si el valor del parámetro options es RemoveEmptyEntries y la longitud de esta instancia es cero, se devuelve una matriz vacía.

Si el valor del parámetro options es None y dos delimitadores son adyacentes o se encuentra un delimitador al principio o al final de esta instancia, el elemento de matriz correspondiente contiene Empty.

En el ejemplo de código siguiente se utiliza la enumeración StringSplitOptions para incluir o excluir las subcadenas generadas por el método Split.

// This example demonstrates the String() methods that use
// the StringSplitOptions enumeration.
using System;

class Sample 
{
    public static void Main() 
    {
    string s1 = ",ONE,,TWO,,,THREE,,";
    string s2 = "[stop]" +
                "ONE[stop][stop]" +
                "TWO[stop][stop][stop]" +
                "THREE[stop][stop]";
    char[] charSeparators = new char[] {','};
    string[] stringSeparators = new string[] {"[stop]"};
    string[] result;
// ------------------------------------------------------------------------------
// Split a string delimited by characters.
// ------------------------------------------------------------------------------
    Console.WriteLine("1) Split a string delimited by characters:\n");

// Display the original string and delimiter characters.
    Console.WriteLine("1a )The original string is \"{0}\".", s1);
    Console.WriteLine("The delimiter character is '{0}'.\n", 
                       charSeparators[0]);

// Split a string delimited by characters and return all elements.
    Console.WriteLine("1b) Split a string delimited by characters and " +
                      "return all elements:");
    result = s1.Split(charSeparators, StringSplitOptions.None);
    Show(result);

// Split a string delimited by characters and return all non-empty elements.
    Console.WriteLine("1c) Split a string delimited by characters and " +
                      "return all non-empty elements:");
    result = s1.Split(charSeparators, StringSplitOptions.RemoveEmptyEntries);
    Show(result);

// Split the original string into the string and empty string before the 
// delimiter and the remainder of the original string after the delimiter.
    Console.WriteLine("1d) Split a string delimited by characters and " +
                      "return 2 elements:");
    result = s1.Split(charSeparators, 2, StringSplitOptions.None);
    Show(result);

// Split the original string into the string after the delimiter and the 
// remainder of the original string after the delimiter.
    Console.WriteLine("1e) Split a string delimited by characters and " +
                      "return 2 non-empty elements:");
    result = s1.Split(charSeparators, 2, StringSplitOptions.RemoveEmptyEntries);
    Show(result);

// ------------------------------------------------------------------------------
// Split a string delimited by another string.
// ------------------------------------------------------------------------------
    Console.WriteLine("2) Split a string delimited by another string:\n");

// Display the original string and delimiter string.
    Console.WriteLine("2a) The original string is \"{0}\".", s2);
    Console.WriteLine("The delimiter string is \"{0}\".\n", stringSeparators[0]);

// Split a string delimited by another string and return all elements.
    Console.WriteLine("2b) Split a string delimited by another string and " +
                      "return all elements:");
    result = s2.Split(stringSeparators, StringSplitOptions.None);
    Show(result);

// Split the original string at the delimiter and return all non-empty elements.
    Console.WriteLine("2c) Split a string delimited by another string and " +
                      "return all non-empty elements:");
    result = s2.Split(stringSeparators, StringSplitOptions.RemoveEmptyEntries);
    Show(result);

// Split the original string into the empty string before the 
// delimiter and the remainder of the original string after the delimiter.
    Console.WriteLine("2d) Split a string delimited by another string and " +
                      "return 2 elements:");
    result = s2.Split(stringSeparators, 2, StringSplitOptions.None);
    Show(result);

// Split the original string into the string after the delimiter and the 
// remainder of the original string after the delimiter.
    Console.WriteLine("2e) Split a string delimited by another string and " + 
                      "return 2 non-empty elements:");
    result = s2.Split(stringSeparators, 2, StringSplitOptions.RemoveEmptyEntries);
    Show(result);
    }

// Display the array of separated strings.
    public static void Show(string[] entries)
    {
    Console.WriteLine("The return value contains these {0} elements:", entries.Length);
    foreach (string entry in entries)
        {
        Console.Write("<{0}>", entry);
        }
    Console.Write("\n\n");
    }
}
/*
This example produces the following results:

1) Split a string delimited by characters:

1a )The original string is ",ONE,,TWO,,,THREE,,".
The delimiter character is ','.

1b) Split a string delimited by characters and return all elements:
The return value contains these 9 elements:
<><ONE><><TWO><><><THREE><><>

1c) Split a string delimited by characters and return all non-empty elements:
The return value contains these 3 elements:
<ONE><TWO><THREE>

1d) Split a string delimited by characters and return 2 elements:
The return value contains these 2 elements:
<><ONE,,TWO,,,THREE,,>

1e) Split a string delimited by characters and return 2 non-empty elements:
The return value contains these 2 elements:
<ONE><TWO,,,THREE,,>

2) Split a string delimited by another string:

2a) The original string is "[stop]ONE[stop][stop]TWO[stop][stop][stop]THREE[stop][stop]".
The delimiter string is "[stop]".

2b) Split a string delimited by another string and return all elements:
The return value contains these 9 elements:
<><ONE><><TWO><><><THREE><><>

2c) Split a string delimited by another string and return all non-empty elements:
The return value contains these 3 elements:
<ONE><TWO><THREE>

2d) Split a string delimited by another string and return 2 elements:
The return value contains these 2 elements:
<><ONE[stop][stop]TWO[stop][stop][stop]THREE[stop][stop]>

2e) Split a string delimited by another string and return 2 non-empty elements:
The return value contains these 2 elements:
<ONE><TWO[stop][stop][stop]THREE[stop][stop]>

*/

Windows 98, Windows 2000 Service Pack 4, Windows Millennium, Windows Server 2003, Windows XP Media Center, Windows XP Professional x64, Windows XP SP2, Windows XP Starter

Microsoft .NET Framework 3.0 es compatible con Windows Vista, Microsoft Windows XP SP2 y Windows Server 2003 SP1.

.NET Framework

Compatible con: 3.0, 2.0

Adiciones de comunidad

AGREGAR
Mostrar:
© 2014 Microsoft