You want your class to determine some information about the calling code, probably for diagnostic purposes.
Use the System.Diagnostics.StackTrace class.
You can’t retrieve information about the caller of a procedure through reflection. Reflection can only act on metadata stored in the assembly, whereas the caller of a procedure is determined at runtime. However, .NET includes two useful diagnostic classes that fill this role: StackTrace and StackFrame.
The stack holds a record of every call that is open and not yet completed. As new calls are made, new methods are added to the top of the stack. For example, if method A calls method B, both method A and B will be on the stack (with method ...