timer

Question

i attch pic with it where u can see textbox and comobox for managing time
at run time user will enter the time. but i want to automate it. like i digital clock
before it i use date n time picker  in display i manage time through formate
but it only pic time when application is run not after that so all the patients have same
time how i can manag this if through timer can u provide code for cock using timer
thanks