C#中检查指定的Unicode字符是字母还是十进制数字
csharpserver side programmingprogramming更新于 2025/9/12 16:53:00
检查指定的Unicode字符是字母还是十进制数字，代码如下 −
示例
using System;
public class Demo {
public static void Main() {
bool res;
char val = '1';
Console.WriteLine("Value = "+val);
res = Char.IsLetterOrDigit(val);
Console.WriteLine("Is the value a letter or digit? = "+res);
}
}
输出
这将产生以下输出 −
Value = 1 Is the value a letter or digit? = True
示例
让我们看另一个例子 −
using System;
public class Demo {
public static void Main() {
bool res;
char val = '$';
Console.WriteLine("Value = "+val);
res = Char.IsLetterOrDigit(val);
Console.WriteLine("Is the value a letter or digit? = "+res);
}
}
输出
这将产生以下输出 −
Value = $ Is the value a letter or digit? = False
