First we add dll of chargify

using ChargifyNET;

Create the object of subscription

ISubscription newSubscription;
newSubscription = new ChargifyNET.Subscription();

Connect to the chargify by giving URL,apikey and password

ChargifyConnect objChargifyConnect = new ChargifyNET.ChargifyConnect(URL, apiKey, apiPassword);

Create the customer obect

ICustomer chargifyCustomer = new Customer();

load customer

chargifyCustomer= objChargifyConnect.LoadCustomer(customerid );

load subscription

 newSubscription objChargifyConnect.LoadSubscription(subscription_id);

Now we get the subscription information by using following properties

DateTime ActivatedAt=newSubscription.ActivatedAt;//Get date when subscription is activated
double balanceamount=newSubscription.Balance; //Get Balance
DateTime CanceledAt= newSubscription.CanceledAt; //Get date when subscription is cancelled
 string cancellationmessage=newSubscription.CancellationMessage; //Get cancellation message
 DateTime CurrentPeriodEndsAt= newSubscription.CurrentPeriodEndsAt; //Get date when current period ends
DateTime CurrentPeriodStartedAt=newSubscription.CurrentPeriodStartedAt; //Get date when current period starts 
string customer= newSubscription.Customer; //Get customer
DateTime ExpiresAt= newSubscription.ExpiresAt; //Get date  when subscription expires  
DateTime LastUpdated=  newSubscription.LastUpdated; //Get last updated date
string productname= newSubscription.Product.Name; //Get the name of product