此方法用於返回從字節數組中指定位置的字節轉換而來的布爾值。
用法:
public static bool ToBoolean (byte[] value, int startIndex);
參數：
-
value:它是必需的字節數組。
startIndex:它是值中字節的索引。
返回值：如果value中startIndex處的字節不為零，則此方法返回true，否則將返回false。
異常：
- ArgumentNullException：如果值為空。
- ArgumentOutOfRangeException：如果startIndex小於零或大於值的長度減1。
以下示例程序旨在說明BitConverter.ToBoolean(Byte []，Int32)方法的用法：
示例1:
// C# program to demonstrate
// BitConverter.ToBoolean(bytes, index));
// Method
using System;
class GFG {
// Main Method
public static void Main()
{
try {
// Define an array of byte values.
byte[] bytes = { 0, 1, 2, 4, 8, 16, 32, 64 };
// Display the values of the myArr.
Console.Write("Initial Array: ");
// calling the PrintIndexAndValues()
// method to print
PrintIndexAndValues(bytes);
for (int index = 0; index < bytes.Length; index++) {
bool values = BitConverter.ToBoolean(bytes, index);
Console.WriteLine("index element bool");
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);
}
}
// 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();
}
}
輸出：
Initial Array: 0 1 2 4 8 16 32 64 index element bool 0 0 False index element bool 1 1 True index element bool 2 2 True index element bool 3 4 True index element bool 4 8 True index element bool 5 16 True index element bool 6 32 True index element bool 7 64 True
示例2:對於ArgumentOutOfRangeException
// C# program to demonstrate
// BitConverter.ToBoolean(bytes, index));
// Method
using System;
class GFG {
// Main Method
public static void Main()
{
try {
// Define an array of byte values.
byte[] bytes = { 0, 1, 2, 4, 8, 16, 32, 64 };
// Display the values of the myArr.
Console.Write("Initial Array: ");
// calling the PrintIndexAndValues()
// method to print
PrintIndexAndValues(bytes);
Console.WriteLine("startindex in less than zero");
bool values = BitConverter.ToBoolean(bytes, -1);
}
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);
}
}
// 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();
}
}輸出：
Initial Array: 0 1 2 4 8 16 32 64 startindex in less than zero Exception Thrown: System.ArgumentOutOfRangeException
示例3:對於ArgumentNullException
// C# program to demonstrate
// BitConverter.ToBoolean(bytes, index));
// Method
using System;
class GFG {
// Main Method
public static void Main()
{
try {
// Define an array of byte values.
byte[] bytes = null;
// Getting bool value
Console.WriteLine("byte array is null");
bool values = BitConverter.ToBoolean(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);
}
}
}輸出：
byte array is null Exception Thrown: System.ArgumentNullException
參考：
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注：本文由純淨天空篩選整理自RohitPrasad3大神的英文原創作品 C# | BitConverter.ToBoolean() Method。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。