如何在C#中将字符串转换为字节数组，反之亦然

问题描述

大家好，

我通过以下方法将Byte数组转换为String:
我的Byte数组是myArray，我从另一个地方获取它，
所以，我不知道用来获取它的代码页

Hi guys,

I convert an array of Byte to String by this method:
my array of Byte is myArray that i get it form another place,
So, i do not know the code page that used to get it

StringBuilder StringPlus = new StringBuilder();
for (int i = 0; i < myArray.Length; i++)
{
    StringPlus.Append(myArray[i].ToString());
}

我想从String转换为Byte，而结果数组等于我的第一个
重要说明:
我不知道用于获取原始数组 myArray
的代码页

我想要的是:
从字节数组转换为字符串，然后再次转换为字节数组
不是从字符串到字节数组，而是从字符串

I want to convert from String to Byte whereas the resulted Array equal to my first
Important note:
I do not know the Without knowing the code page that used to get the original array myArray


i want that:
convert from Byte array to string then to Byte array again
Not from string to Byte array then to string

推荐答案

string myString = //... some string

System.Text.Encoding encoding = System.Text.Encoding.UTF8; //or some other, but prefer some UTF is Unicode is used
byte[] bytes = encoding.GetBytes(myString);

//next lines are written in response to a follow-up questions:

myString = new string(encoding.GetChars(bytes));
byte[] bytes = encoding.GetBytes(myString);
myString = new string(encoding.GetChars(bytes));
byte[] bytes = encoding.GetBytes(myString);

//how many times shall I repeat it to show there is a round-trip? :-)

-SA

—SA

//string to byte array
string theMessage = "This is a message!";
byte[] bytes = Encoding.ASCII.GetBytes(theMessage);
//byte array to string
string theMessage2 = Encoding.ASCII.GetString(bytes);
Console.WriteLine(theMessage2);

//string to byte array
String str = "Hello";
byte[] btarr = ASCIIEncoding.ASCII.GetBytes(str);

//byte array to string
StringBuilder StringPlus = new StringBuilder();
for (int i = 0; i < btarr.Length; i++)
{
   StringPlus.Append(Convert.ToChar(btarr[i]));
}

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