Var Scope

[Ashraf zia]

Hello there to all: I m new to C#. I have a question that what's the difference between a variable scope and a variable life time? Plz give me a detailed answer to clear my concept. Hope to hear!

[Rob Philpott]

Pretty much the same thing. The variable's lifetime is from when it is created (strictly I believe its when the block containing the variable definition is opened) to when it goes 'out of scope'. When this happens, the stack is unwound and all the variables and references get wiped out. The scope is usually the area within the innermost set of braces { } which contain the variable. Regards, Rob Philpott.

[Guffa]

For value types the lifetime is the entire method where it's declared, but the scope might be smaller, for instance inside a loop. Outside the scope, the room allocated on the stack for the variable is simply unused. For reference types the lifetime is from when the object is created until it's garbage collected. When all references to the object go out of scope (or rather the lifetime ends, I believe), it can be garbage collected. --- b { font-weight: normal; }