How do I test a generic dictionary object to see whether it is empty? I want to run some code as follows:

while (reportGraphs.MoveNext())
{
    reportGraph = (ReportGraph)reportGraphs.Current.Value;
    report.ContainsGraphs = true;
    break;
}

The reportGraph object is of type System.Collections.Generic.Dictionary When running this code then the reportGraphs dictionary is empty and MoveNext() immediately throws a NullReferenceException. I don't want to put a try-catch around the block if there is a more performant way of handling the empty collection.

Thanks.

c# collections generics nullreferenceexception
Edit
Report