Metered SetMeteredKey method. Sets metered public and private key. If you purchase metered license when start application this API should be called normally this is enough. However if always fail to upload consumption Data and exceed 24 hours the license will be set to evaluation status to avoid such case you should regularly check the license status if it is evaluation status call this API again in C#....always fail to upload consumption data and exceed 24 hours, the license...mechanism does not send the usage data to purchase server every time...