求一正则表达式

[zywhao]

字符串
#356823032172848##0#0000#AUT#2#45262726#12641.0418,E,4544.3078,N,002.76,278#180411#033704##
规则: 起始字符为 #+15位数字+##+结束字符为##

注意是两个## ##

红色部分

[huangwenquan123]

//这样？
            string str = @"aaaaa
                        #356823032172848##0#0000#AUT#2#45262726#12641.0418,E,4544.3078,N,002.76,278#180411#033704##
                        #356823032172848##0#0000#AUT#2#V#12641.1862,E,1.1861,E,4544.3011,N,000.23,62#190411#015217##
                        bbb";
            Regex reg = new Regex(@"(?<=#)\d{15}##((?!##).)*(?=##)");
            foreach (Match m in reg.Matches(str))
            {
                Response.Write(m.Value + "<br/>");
            }
/*
356823032172848##0#0000#AUT#2#45262726#12641.0418,E,4544.3078,N,002.76,278#180411#033704
356823032172848##0#0000#AUT#2#V#12641.1862,E,1.1861,E,4544.3011,N,000.23,62#190411#015217
*/