如何在C#中获取字符串的ASCII值
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How to get ASCII value of string in C#
提问by RBS
I want to get the ASCII value of characters in a string in C#.
我想在 C# 中获取字符串中字符的 ASCII 值。
If my string has the value "9quali52ty3", I want an array with the ASCII values of each of the 11 characters.
如果我的字符串的值为“9quali52ty3”，我想要一个包含 11 个字符中每个字符的 ASCII 值的数组。
How can I get ASCII values in C#?
如何在 C# 中获取 ASCII 值？
采纳答案by Neil Barnwell
From MSDN
来自MSDN
string value = "9quali52ty3";
// Convert the string into a byte[].
byte[] asciiBytes = Encoding.ASCII.GetBytes(value);
You now have an array of the ASCII value of the bytes. I got the following:
您现在有一个字节的 ASCII 值数组。我得到以下信息：
57 113 117 97 108 105 53 50 116 121 51
57 113 117 97 108 105 53 50 116 121 51
回答by LeppyR64
string s = "9quali52ty3";
foreach(char c in s)
{
Console.WriteLine((int)c);
}
回答by jason
This should work:
这应该有效：
string s = "9quali52ty3";
byte[] ASCIIValues = Encoding.ASCII.GetBytes(s);
foreach(byte b in ASCIIValues) {
Console.WriteLine(b);
}
回答by Lars Truijens
Do you mean you only want the alphabetic characters and not the digits? So you want "quality" as a result? You can use Char.IsLetter or Char.IsDigit to filter them out one by one.
你的意思是你只想要字母字符而不是数字？所以你想要“质量”作为结果？您可以使用 Char.IsLetter 或 Char.IsDigit 将它们一一过滤掉。
string s = "9quali52ty3";
StringBuilder result = new StringBuilder();
foreach(char c in s)
{
if (Char.IsLetter(c))
result.Add(c);
}
Console.WriteLine(result); // quality
回答by Rauhotz
回答by Neil Barnwell
If you want the charcode for each character in the string, you could do something like this:
如果您想要字符串中每个字符的字符代码，您可以执行以下操作：
char[] chars = "9quali52ty3".ToCharArray();
回答by moleatom
byte[] asciiBytes = Encoding.ASCII.GetBytes("Y");
foreach (byte b in asciiBytes)
{
MessageBox.Show("" + b);
}
回答by Tony Dallimore
Earlier responders have answered the question but have not provided the information the title led me to expect. I had a method that returned a one character string but I wanted a character which I could convert to hexadecimal. The following code demonstrates what I thought I would find in the hope it is helpful to others.
较早的回复者已经回答了这个问题，但没有提供标题让我期待的信息。我有一个返回一个字符串的方法，但我想要一个可以转换为十六进制的字符。以下代码演示了我认为我会发现的内容，希望对其他人有所帮助。
string s = "\ta￡\x0394\x221A"; // tab; lower case a; pound sign; Greek delta;
// square root
Debug.Print(s);
char c = s[0];
int i = (int)c;
string x = i.ToString("X");
c = s[1];
i = (int)c;
x = i.ToString("X");
Debug.Print(c.ToString() + " " + i.ToString() + " " + x);
c = s[2];
i = (int)c;
x = i.ToString("X");
Debug.Print(c.ToString() + " " + i.ToString() + " " + x);
c = s[3];
i = (int)c;
x = i.ToString("X");
Debug.Print(c.ToString() + " " + i.ToString() + " " + x);
c = s[4];
i = (int)c;
x = i.ToString("X");
Debug.Print(c.ToString() + " " + i.ToString() + " " + x);
The above code outputs the following to the immediate window:
上面的代码将以下内容输出到立即窗口：
a￡Δ√
a 97 61
一个 97 61
￡ 163 A3
￡ 163 A3
Δ 916 394
Δ 916 394
√ 8730 221A
√ 8730 221A
回答by ZagNut
Or in LINQ:
或者在 LINQ 中：
string value = "9quali52ty3";
string value = "9quali52ty3";
var ascii_values = value.Select(x => (int)x);
var ascii_values = value.Select(x => (int)x);
var as_hex = value.Select(x => ((int)x).ToString("X02"));
var as_hex = value.Select(x => ((int)x).ToString("X02"));
回答by mahesh
string value = "mahesh";
// Convert the string into a byte[].
byte[] asciiBytes = Encoding.ASCII.GetBytes(value);
for (int i = 0; i < value.Length; i++)
{
Console.WriteLine(value.Substring(i, 1) + " as ASCII value of: " + asciiBytes[i]);
}
