在C#中检查字符串是半角还是全角

using System;
using System.Globalization;

public class Program
{
    public static void Main()
    {
        string input = "你好，Hello！";
        bool isFullWidth = CheckFullWidth(input);
        
        if (isFullWidth)
        {
            Console.WriteLine("字符串是全角");
        }
        else
        {
            Console.WriteLine("字符串是半角");
        }
    }
    
    public static bool CheckFullWidth(string input)
    {
        foreach (char c in input)
        {
            UnicodeCategory category = CharUnicodeInfo.GetUnicodeCategory(c);
            if (category != UnicodeCategory.OtherWidth && category != UnicodeCategory.FullWidth)
            {
                return false;
            }
        }
        
        return true;
    }
}