Guid and api in lime license

where i have to use limelm api key?

Use the LimeLM web API key in the web API. You can't use it with TurboActivate.

could you tell vb.net application features and asp.net application features(what do do and not to do).

The "Getting started with LimeLM" article is a good place to start. If you have any specific questions feel free to ask.

hithank you i studied the above link it is useful for me.I used Turboactivate for license in sample vb.net application .i had other queries too.

Whether i have to call features in every form or in login form only?if i check features in every form Whether it will check limelm server every time?if i check features in login form only, without internet connection user can access all forms (intially have net connection for login form and disconnect net connection thereafter) i am unable to check license expiry thereafter.

what i have to do?

Whether i have to call features in every form or in login form only?

Use them when you need them. My guess is you're limiting features on the "login" form, in which case you'll probably only need to use the feature values on said login form.

if i check features in every form Whether it will check limelm server every time?

No, it doesn't. Calling IsGenuine() will tell you whether there are changes to the feature values. We recommend calling the IsGenuine() function every 90 days (see the Custom license features article).

if i check features in login form only, without internet connection user can access all forms (intially have net connection for login form and disconnect net connection thereafter) i am unable to check license expiry thereafter.

I don't understand the question. The feature values are stored locally after your user activates.