Share three ways to determine whether a character is a Chinese character in C#

1. Use ASCII code to judge

In the ASCII code table, the English range is 0-127, while the Chinese characters are greater than 127. The specific code is as follows:

Copy the codeThe code is as follows:

string text = "Is it Chinese characters, ABC, Ke Leyi";
       for (int i = 0; i < ; i++)
       {
            if ((int)text[i] > 127)
("is Chinese characters");
            else
("Not Chinese characters");
       }

2. Use UNICODE encoding range of Chinese characters to judge

The UNICODE encoding range of Chinese characters is 4e00-9fbb, the specific code is as follows:

Copy the codeThe code is as follows:

string text = "Is it a Chinese character, ABC,";
char[] c = ();

       for (int i = 0; i < ;i++)
       if (c[i] >= 0x4e00 && c[i] <= 0x9fbb)
("is Chinese characters");
       else
("Not Chinese characters");

3. Use regular expressions to judge

Using regular expressions to judge the UNICODE encoding range of Chinese characters, the specific code is as follows:

Copy the codeThe code is as follows:

string text = "Is it a Chinese character, ABC,";
        for (int i = 0; i < ; i++)
        {
               if ((text[i].ToString(), @"[\u4e00-\u9fbb]+{1}quot;))
("is Chinese characters");
               else
("Not Chinese characters");
        }