如何在C＃中将ASCII字符转换为字节？

给定一个字符，任务是将该ASCII字符转换为C＃中的字节。

例子：

Input: chr = 'a'
Output: 97
  
Input: chr = 'H'
Output: 72

方法1：天真的方法

Step 1: Get the character.

Step 2: Convert the character using the Byte struct

Step 3: Return or perform the operation on the byte 

下面是上述方法的实现：

C#

byte b = (byte) chr;

C#

// C# program to convert 
// ascii char to byte.
    
using System;
  
public class GFG{
    
    static public void Main ()
    { 
        char ch = 'G'; 
    
        // Creating byte 
        byte byt; 
    
        // converting character into byte 
        byt = (byte)ch; 
    
        // printing character with byte value
        Console.WriteLine("Byte of char \'" + ch + "\' : " + byt);
  
    } 
}

C#

// C# program to convert 
// ascii char to byte.
    
using System;
  
public class GFG{
    
    static public void Main ()
    { 
        char ch = 'G'; 
    
        // Creating byte 
        byte byt; 
    
        // converting character into byte 
        // using Convert.ToByte() method
        byt = Convert.ToByte(ch); 
    
        // printing character with byte value
        Console.WriteLine("Byte of char \'" +
                    ch + "\' : " + byt);
  
    } 
}

输出：

// C# program to convert 
// ascii char to byte.
    
using System;
using System.Text;
  
public class GFG{
    
    static public void Main ()
    { 
        char ch = 'G'; 
          
        // convert to string
        // using the ToString() method
        string str = ch.ToString();
          
        // Creating byte 
        byte byt; 
    
        // converting character into byte 
        // using GetBytes() method
        byt = Encoding.ASCII.GetBytes(str)[0]; 
    
        // printing character with byte value
        Console.WriteLine("Byte of char \'" +
                          ch + "\' : " + byt);
  
    } 
}

方法2：使用ToByte ()方法：此方法是Convert类方法。它用于将其他基本数据类型转换为字节数据类型。

句法：

Byte of char 'G' : 71

下面是上述方法的实现：

C＃

byte byt = Convert.ToByte(char); 

输出：

// C# program to convert 
// ascii char to byte.
    
using System;
  
public class GFG{
    
    static public void Main ()
    { 
        char ch = 'G'; 
    
        // Creating byte 
        byte byt; 
    
        // converting character into byte 
        // using Convert.ToByte() method
        byt = Convert.ToByte(ch); 
    
        // printing character with byte value
        Console.WriteLine("Byte of char \'" +
                    ch + "\' : " + byt);
  
    } 
}

方法3：使用GetBytes ()[0]方法：编码。 ASCII。 GetBytes()方法用于接受字符串作为参数并获取字节数组。因此，在将字符转换为字符串之后，使用GetBytes()[0]获取字节。

句法：

Byte of char 'G' : 71

Step 1: Get the character.

Step 2: Convert the character into string using ToString() method.

Step 3: Convert the string into byte using the GetBytes()[0] Method and store the converted string to the byte.

Step 4: Return or perform the operation on the byte.

下面是上述方法的实现：

C＃

byte byt = Encoding.ASCII.GetBytes(string str)[0]; 

输出：

// C# program to convert 
// ascii char to byte.
    
using System;
using System.Text;
  
public class GFG{
    
    static public void Main ()
    { 
        char ch = 'G'; 
          
        // convert to string
        // using the ToString() method
        string str = ch.ToString();
          
        // Creating byte 
        byte byt; 
    
        // converting character into byte 
        // using GetBytes() method
        byt = Encoding.ASCII.GetBytes(str)[0]; 
    
        // printing character with byte value
        Console.WriteLine("Byte of char \'" +
                          ch + "\' : " + byt);
  
    } 
}