Este método se usa para devolver un entero con signo de 16 bits convertido a partir de dos bytes en una posición específica en una array de bytes.
Sintaxis:
public static short ToInt16 (byte[] value, int startIndex);
Parámetros:
valor: Es una array de bytes.
startIndex: Es la posición inicial dentro del valor.
Valor devuelto: este método devuelve un entero con signo de 16 bits 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 del método BitConverter.ToInt16(Byte[], Int32) :
Ejemplo 1:
C#
// C# program to demonstrate
// BitConverter.ToInt16(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
Console.WriteLine("index byte Array short value");
for (int index = 0; index < bytes.Length - 1;
index = index + 2) {
short values = BitConverter.ToInt16(bytes, index);
Console.WriteLine(" {0} {1} {2}",
index, BitConverter.ToString(bytes, index, 2), 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();
}
}
Producción:
Initial Array: 32 0 0 42 0 65 0 125 0 197 0 168 3 41 4 125 32 index byte Array short value 0 20-00 32 2 00-2A 10752 4 00-41 16640 6 00-7D 32000 8 00-C5 -15104 10 00-A8 -22528 12 03-29 10499 14 04-7D 32004
Ejemplo 2: para ArgumentException
C#
// C# program to demonstrate
// BitConverter.ToInt16(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
Console.WriteLine("index element short 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.");
short values = BitConverter.ToInt16(bytes, index);
Console.WriteLine(" {0} {1} {2}",
index, BitConverter.ToString(bytes, index, 2), values);
}
else {
short values = BitConverter.ToInt16(bytes, index);
Console.WriteLine(" {0} {1} {2}",
index, BitConverter.ToString(bytes, index, 2),
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 short value 1 00-00 0 3 2A-00 42 5 41-00 65 7 7D-00 125 9 C5-00 197 11 A8-03 936 13 29-04 1065 startIndex equals the length of value minus 1. Exception Thrown: System.ArgumentException
Ejemplo 3: para ArgumentOutOfRangeException
C#
// C# program to demonstrate
// BitConverter.ToInt16(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
Console.WriteLine("index element short 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.");
short values = BitConverter.ToInt16(bytes, index);
}
else {
short values = BitConverter.ToInt16(bytes, index);
Console.WriteLine(" {0} {1} {2}",
index, BitConverter.ToString(bytes, index, 2), 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 short value 0 20-00 32 2 00-2A 10752 4 00-41 16640 6 00-7D 32000 8 00-C5 -15104 10 00-A8 -22528 12 03-29 10499 14 04-7D 32004 startIndex is greater than the length of value minus 1. Exception Thrown: System.ArgumentOutOfRangeException
Ejemplo 4: Para ArgumentNullException
C#
// C# program to demonstrate
// BitConverter.ToInt16(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
short values = BitConverter.ToInt16(bytes, 0);
Console.Write("{0}", 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);
}
}
}
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