c# - Display and update a TimeSpan -


...hello,

i explain problem : in xaml code, binded element propertie "duration" of class "mtask". "duration" type timespan.

when start method class "mtask" called mstart, want update propertie "duration" during execution of method, , display binding.

but problem don't know how keep updated time span. thinking create datetime @ beginning of method , substract current datetime.now during execution, solution?

if need more information, ask!

thanks,

y.

the easiest way write start time field , let property "duration" return datetime.now - _starttime.

update: class mtask must implement inotifypropertychanged , raise event of interface, whenever value of property changes. in case, value of property calculated on fly, need raise event cyclically while method mstart runs.


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