var in class level members

Question

Hello experts I wonder why var is not allowed to be used in class level members. When using so I am getting error as  The contextual keyword 'var' may only appear within a local variable declaration or in script code  class ConcurrentDictionaryDemo { var phoneOrders = new ConcurrentDictionary (); //Error ............ ............ } Any thoughts on this?

Ehsan Sajjad · Answer

The error is pretty self describing that var can be used as local variable declaration and this is field not local variabe which you are declaring in your class so it would not compile. Eric Lippert has wrote a complete blog post on this which you can read here: http://blogs.msdn.com/b/ericlippert/archive/2009/01/26/why-no-var-on-fields.aspx There are couple of posts on this here as well: http://stackoverflow.com/questions/4461597/why-class-fields-cannot-be-var http://stackoverflow.com/questions/6522127/why-cant-i-declare-a-field-using-var?answertab=active#tab-top

Prakash Tripathi · Answer

Thnx Ehsan Sajjad for the response. It clarifies.