How to get months difference between two dates in c#

Question

I have two date fields where i need to caluculate difference in months between those two dates how can i do this.Below is my formula

(start.Year * 12 + start.Month) - (end.Year * 12 + end.Month);

 

Expected Result

Start Date End Date Need to get output as

08/28/2019 09/02/2019 1

06/01/2019 09/02/2019 4

01/02/2019 03/02/2019 3

01/02/2019 03/05/2019 3