vb.net - VB.net drop last octat from ipaddress (after 3rd decimal)

Question

I have an ip address as follows 192.168.10.140 i would like to drop everything from the string after the 3rd occurance of the decimal but i am not sure how to go about it

using VB.net 2010

thanks in advance

Answer 1

用于LastIndexOf查找最后一个索引，.然后用于Substring获取您需要的部分。