Regular expression

[C# Programming]

Hi,

I am having below regular expression
/[^/]+/(?[^/]+)/[^/]+/(?.+)

which will accept strings of below format
/VB/XYZ/8/5/10103303.abc

I want to extend my regular expression which will accept extra feild like " ?key=name3
so my input string will
/VB/XYZ/8/5/10103303.abc?key=

Please suggest

Thanks,