C# 将字符串转换为字符 - Unicode [英] C# Convert string to char - Unicode

问题描述

看看这段代码:

string s = "0x00A5";
Console.WriteLine(((char)s).ToString()); //Error
Console.WriteLine(((char)0x00A5).ToString());

我知道为什么会出现错误，但我不知道如何解决这个问题.

I know why there is an error but i have no Idea how to solve this.

有什么建议吗?

string stringHex = "7A";
int intFromHex = int.Parse(stringHex , System.Globalization.NumberStyles.HexNumber) + 30;
string hex = intFromHex.ToString("X");
switch(hex.Length)
{
    case 2:
        hex = "0x00" + hex;
        break;
    case 3:
        hex = "0x0" + hex;
        break;
    case 4:
        hex = "0x" + hex;
        break;
}
char c = (char)hex;
string s = "0x00A5";
Console.WriteLine(((char)s).ToString());
Console.WriteLine(((char)0x00A5).ToString());

这是整个代码.我试图用随机的 unicode 字符生成一个字符串.

This is the whole Code. Im trying to generate a string with random unicode Chars.

推荐答案

如果你只想转换一个符号，把Convert:

If you want to convert just one symbol, put Convert:

  string s = "0x00A5";

  // ¥
  string result = ((char)Convert.ToInt32(s, 16)).ToString();

如果你想转换几个你必须用正则表达式提取它们:

If you want to convert several ones you have to extract them with regular expressions:

  string s = "0x00A50x00200x0048";

  // ¥ H
  string result = Regex.Replace(s, "0x[0-9A-Fa-f]{4}", 
    match => ((char)Convert.ToInt32(match.Value, 16)).ToString());

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