var str= ",2,3,4,6,7,";
var str2 = str.Trim(new char[] { ',' }); //去除字符串str两端的','字符。
//则str2 为:"2,3,4,6,7"
var str= ",2,3,4,6,7,";
var str2 = str.Trim(new char[] { ',' }); //去除字符串str两端的','字符。
//则str2 为:"2,3,4,6,7"
转载于:https://www.cnblogs.com/seacher/p/3928233.html