title: Callbacks (Asynchronous Method Calls) within a Loop
body: <p>Part of a C# application I'm writing requires collecting data from a service provider's database for each account associated to a user. When the user logs into the app a call is made to start updating the accounts from the service provider's database. Since lots operations are performed on the third party's end the process of getting their information could take a while so I don't want to wait for each account just to start the process of updating. My question is, is there any issues (maybe threading issues) with calling a asynchronous method inside of a loop?</p>