are static classes shared among different threads in C#

Question

I need to share a value between threads without exceeding it\'s boundary. Does a static variable do this?

Answer 1

Static variables are shared across multiple threads within an AppDomain. All threads will see, and act, upon the same instance of a static variable. As such, if you're using static, you will likely want to use some form of synchronization to protect the access of that variable.

If you want to have a thread-local variable, the ThreadLocal class makes this easy. It provides a means of generating and using data that is unique per thread.