La clase Hashtable representa una colección de pares de clave y valor que se organizan según el código hash de la clave. La clave se utiliza para acceder a los elementos de la colección. El método Hashtable.Remove(Object) se usa para eliminar el elemento con la clave especificada de Hashtable.
Sintaxis:
public virtual void Remove (object key);
Parámetro:
key: Es la clave del elemento a remover de tipo System.Object .
Excepciones:
- ArgumentNullException: si la clave es nula.
- NotSupportedException: si Hashtable es de solo lectura o tiene un tamaño fijo.
Ejemplo:
// C# code to remove the element
// with the specified key from Hashtable
using System;
using System.Collections;
class GFG {
// Driver code
public static void Main()
{
// Creating a Hashtable
Hashtable myTable = new Hashtable();
// Adding elements in Hashtable
myTable.Add("2", "Even & Prime");
myTable.Add("3", "Odd & Prime");
myTable.Add("4", "Even & non-prime");
myTable.Add("9", "Odd & non-prime");
// Print the number of entries in Hashtable
Console.WriteLine("Total number of entries in Hashtable : "
+ myTable.Count);
// To remove the elements from Hashtable
// which has key as "3"
myTable.Remove("3");
// Print the number of entries in Hashtable
Console.WriteLine("Total number of entries in Hashtable : "
+ myTable.Count);
// To remove the elements from Hashtable
// which has key as "4"
myTable.Remove("4");
// Print the number of entries in Hashtable
Console.WriteLine("Total number of entries in Hashtable : "
+ myTable.Count);
// Adding elements in Hashtable
myTable.Add("g", "geeks");
myTable.Add("c", "c++");
myTable.Add("d", "data structures");
// Print the number of entries in Hashtable
Console.WriteLine("Total number of entries in Hashtable : "
+ myTable.Count);
// To remove the elements from Hashtable
// which has key as "c"
myTable.Remove("c");
// Print the number of entries in Hashtable
Console.WriteLine("Total number of entries in Hashtable : "
+ myTable.Count);
}
}
Producción:
Total number of entries in Hashtable : 4 Total number of entries in Hashtable : 3 Total number of entries in Hashtable : 2 Total number of entries in Hashtable : 5 Total number of entries in Hashtable : 4
Referencia:
Publicación traducida automáticamente
Artículo escrito por Sahil_Bansall y traducido por Barcelona Geeks. The original can be accessed here. Licence: CCBY-SA