string num=12
num.PadLeft(4, '0'); //结果为为 '0012'
看字符串长度是否满足4位,不满足则在字符串左边以"0"补足
做网站用的编程工具/房产网站建设
转载于:https://www.cnblogs.com/Yellowshorts/archive/2013/02/19/2917095.html
string num=12
num.PadLeft(4, '0'); //结果为为 '0012'
看字符串长度是否满足4位,不满足则在字符串左边以"0"补足
转载于:https://www.cnblogs.com/Yellowshorts/archive/2013/02/19/2917095.html