Este método se usa para devolver un carácter Unicode convertido a partir de dos bytes en una posición específica en una array de bytes.
Sintaxis:
public static char ToChar (byte[] value, int startIndex);
Parámetros:
valor: Es una array.
startIndex: es la posición inicial dentro del valor.
Valor de retorno: este método devuelve un carácter formado por dos bytes que comienzan en startIndex .
Excepciones:
ArgumentException: si startIndex es igual a la longitud del valor menos 1.
ArgumentNullException: si el valor es nulo.
ArgumentOutOfRangeException: si startIndex es menor que cero o mayor que la longitud del valor menos 1.
Los siguientes programas ilustran el uso de BitConverter.ToChar(Byte[], Int32) Método:
Ejemplo 1:
CSHARP
// C# program to demonstrate // BitConverter.ToChar(Byte[], Int32); // Method using System; class GFG { // Main Method public static void Main() { try { // Define an array of byte values. byte[] bytes = { 32, 0, 0, 42, 0, 65, 0, 125, 0, 197, 0, 168, 3, 41, 4, 125, 32 }; // Display the values of the myArr. Console.Write("Initial Array: "); // calling the PrintIndexAndValues() // method to print PrintIndexAndValues(bytes); // print char value for (int index = 1; index < bytes.Length - 1; index = index + 2) { char values = BitConverter.ToChar(bytes, index); Console.WriteLine("index element char"); Console.WriteLine(" {0} {1} {2}", index, bytes[index], values); } } catch (ArgumentNullException e) { Console.Write("Exception Thrown: "); Console.Write("{0}", e.GetType(), e.Message); } catch (ArgumentOutOfRangeException e) { Console.Write("Exception Thrown: "); Console.Write("{0}", e.GetType(), e.Message); } catch (ArgumentException e) { Console.Write("Exception Thrown: "); Console.Write("{0}", e.GetType(), e.Message); } } // Defining the method // PrintIndexAndValues public static void PrintIndexAndValues(byte[] myArr) { for (int i = 0; i < myArr.Length; i++) { Console.Write("{0} ", myArr[i]); } Console.WriteLine(); Console.WriteLine(); Console.WriteLine("initial Array in string: {0} ", BitConverter.ToString(myArr)); Console.WriteLine(); } }
Producción:
Initial Array: 32 0 0 42 0 65 0 125 0 197 0 168 3 41 4 125 32 initial Array in string: 20-00-00-2A-00-41-00-7D-00-C5-00-A8-03-29-04-7D-20 index element char 1 0 index element char 3 42 * index element char 5 65 A index element char 7 125 } index element char 9 197 ? index element char 11 168 ? index element char 13 41 ? index element char 15 125 ?
Ejemplo 2: para ArgumentException
CSHARP
// C# program to demonstrate // BitConverter.ToChar(Byte[], Int32); // Method using System; class GFG { // Main Method public static void Main() { try { // Define an array of byte values. byte[] bytes = { 32, 0, 0, 42, 0, 65, 0, 125, 0, 197, 0, 168, 3, 41, 4, 125 }; // Display the values of the myArr. Console.Write("Initial Array: "); // calling the PrintIndexAndValues() // method to print PrintIndexAndValues(bytes); // print char value for (int index = 1; index < bytes.Length; index = index + 2) { if (index == bytes.Length - 1) { Console.WriteLine(); Console.WriteLine("startIndex equals the "+ "length of value minus 1."); char values = BitConverter.ToChar(bytes, index); } else { char values = BitConverter.ToChar(bytes, index); Console.WriteLine("index element char"); Console.WriteLine(" {0} {1} {2}", index, bytes[index], values); } } } catch (ArgumentNullException e) { Console.Write("Exception Thrown: "); Console.Write("{0}", e.GetType(), e.Message); } catch (ArgumentOutOfRangeException e) { Console.Write("Exception Thrown: "); Console.Write("{0}", e.GetType(), e.Message); } catch (ArgumentException e) { Console.Write("Exception Thrown: "); Console.Write("{0}", e.GetType(), e.Message); } } // Defining the method // PrintIndexAndValues public static void PrintIndexAndValues(byte[] myArr) { for (int i = 0; i < myArr.Length; i++) { Console.Write("{0} ", myArr[i]); } Console.WriteLine(); Console.WriteLine(); Console.WriteLine("initial Array in string: {0} ", BitConverter.ToString(myArr)); Console.WriteLine(); } }
Producción:
Initial Array: 32 0 0 42 0 65 0 125 0 197 0 168 3 41 4 125 initial Array in string: 20-00-00-2A-00-41-00-7D-00-C5-00-A8-03-29-04-7D index element char 1 0 index element char 3 42 * index element char 5 65 A index element char 7 125 } index element char 9 197 ? index element char 11 168 ? index element char 13 41 ? startIndex equals the length of value minus 1. Exception Thrown: System.ArgumentException
Ejemplo 3: para ArgumentOutOfRangeException
CSHARP
// C# program to demonstrate // BitConverter.ToChar(Byte[], Int32); // Method using System; class GFG { // Main Method public static void Main() { try { // Define an array of byte values. byte[] bytes = { 32, 0, 0, 42, 0, 65, 0, 125, 0, 197, 0, 168, 3, 41, 4, 125 }; // Display the values of the myArr. Console.Write("Initial Array: "); // calling the PrintIndexAndValues() // method to print PrintIndexAndValues(bytes); // print char value for (int index = 0; index < bytes.Length + 1; index = index + 2) { if (index == bytes.Length) { Console.WriteLine(); Console.WriteLine("startIndex is greater than "+ "the length of value minus 1."); char values = BitConverter.ToChar(bytes, index); } else { char values = BitConverter.ToChar(bytes, index); Console.WriteLine("index element char"); Console.WriteLine(" {0} {1} {2}", index, bytes[index], values); } } } catch (ArgumentNullException e) { Console.Write("Exception Thrown: "); Console.Write("{0}", e.GetType(), e.Message); } catch (ArgumentOutOfRangeException e) { Console.Write("Exception Thrown: "); Console.Write("{0}", e.GetType(), e.Message); } catch (ArgumentException e) { Console.Write("Exception Thrown: "); Console.Write("{0}", e.GetType(), e.Message); } } // Defining the method // PrintIndexAndValues public static void PrintIndexAndValues(byte[] myArr) { for (int i = 0; i < myArr.Length; i++) { Console.Write("{0} ", myArr[i]); } Console.WriteLine(); Console.WriteLine(); Console.WriteLine("initial Array in string: {0} ", BitConverter.ToString(myArr)); Console.WriteLine(); } }
Producción:
Initial Array: 32 0 0 42 0 65 0 125 0 197 0 168 3 41 4 125 initial Array in string: 20-00-00-2A-00-41-00-7D-00-C5-00-A8-03-29-04-7D index element char 0 32 index element char 2 0 ? index element char 4 0 ? index element char 6 0 ? index element char 8 0 ? index element char 10 0 ? index element char 12 3 ? index element char 14 4 ? startIndex is greater than the length of value minus 1. Exception Thrown: System.ArgumentOutOfRangeException
Ejemplo 4: Para ArgumentNullException
CSHARP
// C# program to demonstrate // BitConverter.ToChar(Byte[], Int32); // Method using System; class GFG { // Main Method public static void Main() { try { // Define an array of byte values. byte[] bytes = null; // get the char value char values = BitConverter.ToChar(bytes, 0); } catch (ArgumentNullException e) { Console.Write("Exception Thrown: "); Console.Write("{0}", e.GetType(), e.Message); } catch (ArgumentOutOfRangeException e) { Console.Write("Exception Thrown: "); Console.Write("{0}", e.GetType(), e.Message); } catch (ArgumentException e) { Console.Write("Exception Thrown: "); Console.Write("{0}", e.GetType(), e.Message); } } }
Producción:
Exception Thrown: System.ArgumentNullException
Referencia:
Publicación traducida automáticamente
Artículo escrito por RohitPrasad3 y traducido por Barcelona Geeks. The original can be accessed here. Licence: CCBY-SA