Biegral 2020/9/14 11:54:02 4922
比如有字符串 string s1="1,2,3,5,99,100,101," 如何去掉最后的逗号,让结果是s1="1,2,3,5,99,100,101" 还得满足当最后不是逗号的时候,就不去掉?
s1 = s1.Remove(s1.LastIndexOf(","), 1);
大家的都正确,但是只能选一个,感谢