How do I calculate difference in years and months given a start and end [duplicate]

Answer 1

Something like this?

        var end = endDate.Year + endDate.Month / 12.0;
        var start = startDate.Year + startDate.Month / 12.0;

        var years = (int)(end - start);
        var months = (end - start) * 12;

Not sure if you wanted to round the months...

Hope this helps,

John