how to make SqlRoleProvider .ApplicationNam e thread safe

Hi

I'm currently working on a new portal for an online university, and we need
write code that manages roles for multiple applications. To tell the
SqlRoleProvider which Application we are currently managing I am using the
SqlRoleProvider .ApplicationNam e Property which is not thread safe. My
question is how do I make this property thread safe? Here's a sample of the
code.

....

Roles.Provider. ApplicationName = "Chemistry1 01";
Roles.AddUsersT oRoles("Bob, Peter", "Student");
Roles.CreateRol e("TeacherAssis tant");
Roles.Provider. ApplicationName = "Chemistry2 39";
Roles.AddUsersT oRoles("Josh, Sam", "Teacher");
Roles.AddUsersT oRoles("Frank, Hui", "Student");
Roles.DeleteRol e("LabMonitor") ;

....

Also could anyone tell me if the following class would make the
ApplicationName Property thread safe?

public class EconcordiaRoleP rovider : SqlRoleProvider
{
private static Object mutex = new Object();

public EconcordiaRoleP rovider() : base()
{

}

public override string ApplicationName
{
get
{
lock(Econcordia RoleProvider.mu tex)
{
return base.Applicatio nName;
}
}
set
{
lock (EconcordiaRole Provider.mutex)
{
base.Applicatio nName = value;
}
}
}
}

Thank you for the time you have given this post, and I hope to hear from you
in the near future. If you have any advice or suggestions, please don't
hesitate to reply to this post.

Cheers
Francis