Is there a way to get an event when there's a change in a table?

Using Azure Sql Server, and in C# if that's relevant, is there a way to get an event when data in specific table changes? In one table we need an event if any column changes in a row. In a 2nd table we need an event only when either of 2 columns change (although any change would be ok). And we need to know which row. Is it possible to do this? If so, how? **Update:** We need a call into our C# code for this event. A database trigger where the database can do something doesn't help, our program needs to take action on a change. thanks - dave