What is the difference between “compile time” and “run time”?

Question

I do not understand what is meant by the terms \"compile time\" and \"run time\" (or \"runtime\").

I\'m also a bit confused about what \"value type\" and \"reference ty

Answer 1

As to your first question, see Stack Overflow: Runtime vs Compile time.

As to your second question, see Stack Overflow: What are the differences between value types and reference types in C#.

As to how they relate: they are independent concepts. Setting a variable's value and reading its value happens at run time; whether or not that variable has value type or reference type.