How can I write an If Else query to check if something was found in the database or not?

For example in my program a person gets extra money for a certain month, 

Now I need to check with an If Else query, if the method that gets the month and money from the database, got a month or nothing at all

```
datareader = Class.Month(comboBox2.SelectedItem.ToString());
datareader.Read();
int Money = dr.GetInt32(0);

```

Currently at `int Money= dr.GetInt32(0);` I get an error that we found nothing, but that's what I'd like to fix. If nothing is found then I want to set `int Money` to the number 0