Convert Time to decimal in C#

Can we take the time value is roughly at 10:30:00

Type1

 

decimal output= Convert.ToDecimal(TimeSpan.Parse("10:30").TotalHours);

Net Approch will be 2 nd Type is

var startTime=TimeSpan.Parse("10:30");

var endTime=TimeSpan.Parse("11:30");

var result=endTime -  startTime;

decimal output= result.Hours+result.Minites/60;

Here minites should be reater than 0.