Chinese and English string truncation method

Public static string Intercept (string input, int p) {Encoding encode = Encoding. getEncoding ("gb2312"); byte [] byteArr = encode. getBytes (input); if (byteArr. length <= p) return input;
Int m = 0, n = 0; foreach (byte B in byteArr) {if (n> = p) break; if (B> 127) m ++; // important step: Count the characters whose values in the first p bytes are greater than 127 plus n ++;} if (m % 2! = 0) n = p + 1; // if it is not even: It indicates that the end is a double byte character, the number of truncated digits plus 1
Return encode. GetString (byteArr, 0, n );}
Console. writeLine (Intercept ("ABC Chinese", 7); Console. writeLine (Intercept ("ABCD Chinese", 7); Console. writeLine (Intercept ("ABC Chinese D", 7 ));
Test code result:
ABC China ABCD China ABC China D