怎样用正则表达式来截取字符串？

[casualplayer]

现在有字符串为：
"OP1,...,...,...
OP2,...,...,...
OP3,...,...,...
...
OP234,...,..."

怎样搜索出最后一个OP后面的数字？

[HimeTale]

Regex.Match(TextBox2.Text, "(?<=OP)\d+", RegexOptions.RightToLeft Or RegexOptions.IgnoreCase).Value

[HimeTale]

把TextBox2.Text替换成你的
"OP1,...,...,...
OP2,...,...,...
OP3,...,...,...
...
OP234,...,..."