title: How to create a common function for all forms using c#?
body: <p>I need to call a single function from all forms. In vb.net there is an option module. In this module we can create functions/variables and we call them from anywhere in the project. Is there any option in C# like this module? 
  Finally, if I need to use a single function in my entire project, is this possible or not? </p>