> The MSDN documentation about the Regex class seems to have
> contradictory information. At the "Remarks" section, the
> documentation states:
>
> "The Regex class is immutable (read-only) and is inherently thread
> safe. Regex objects can be created on any thread and shared between
> threads. "
>
> However, on the "Thread Safety" section of the same class, the
> documentation states:
>
> "Any public static (Shared in Visual Basic) members of this type are
> thread safe. Any instance members are not guaranteed to be thread
> safe.".

"Carl Daniel [VC++ MVP]" wrote:

> mnowosad wrote:
> > The MSDN documentation about the Regex class seems to have
> > contradictory information. At the "Remarks" section, the
> > documentation states:
> >
> > "The Regex class is immutable (read-only) and is inherently thread
> > safe. Regex objects can be created on any thread and shared between
> > threads. "
> >
> > However, on the "Thread Safety" section of the same class, the
> > documentation states:
> >
> > "Any public static (Shared in Visual Basic) members of this type are
> > thread safe. Any instance members are not guaranteed to be thread
> > safe.".
>
> This is boilerplate text that doesn't apply to Regex and should be removed
> from this doc page.
>
> > So, for instance, if i have an instance of Regex and the only method
> > I will ever call on it is the instance method "IsMatch()", to
> > validate text input, can I share this instance across different
> > threads?
>
> Yes.
>
> > Can multiple threads concurrently call "IsMatch()" method on
> > this Regex instance without any major problem?
>
> Yes.
>
> > Or do I need to
> > serialize the calls to "IsMatch()" method in this case, using the
> > "lock" statement?
>
> No, no need for anything like that.
>
> -cd
>
>
>