Subtract Days

Question

Hi In below code i want if Session Status is Approved then 7 days should be subtracted from Session Date '> Thanks

Sachin Singh · Answer

@Ramco, of course, it is possible Eval( " CurrentStatus " )==" Approved ") ? Convert.ToDateTime( Eval( " SessionDate " )).AddDays(-7).ToString(" dd-MM-yyyy ") : Eval( " SessionDate " ,"{0: dd-MM-yyyy}" ) %>

Sachin Singh · Answer

@Ramco, Achieving the result is a different thing and achieving the result using good programing practice is different. If a single line of presentation logic (example:- change color of a row based on salary ) or Data manipulation logic (display age based on DOB) is written inside the html page (aspx page / mvc view page) then it is very bad coding. In your case, you are manipulating SessionDate based on Session Status inside your aspx page which is bad. It should always be handled inside the ViewModel if not possible with the domain class. so create a class with all properties as your domain entity and write the below code public class TicketVM { public DateTime SessionDate {get;set;} public string BookTitle {get;set;} public string currentStatus {get;set;} public DateTime ActualSessionDate get { if ( this .currentStatus== "Approved" ) { return this .SessionDate.AddDays(-7); } else { return this .SessionDate; } } } Now as ActualSessionDate is a get-only property you don't need to fill it, it will automatically do the job. Now instead of your actual Domain Entity use the above class, fill the data and use it in the repeater as "ltrlSessionDate" runat= "server" Text= ' ActualSessionDate ","{0: dd-MM-yyyy}") %>' >

Ramco Ramco · Answer

Hi Jaydeep I am using repeater " runat="server"> '> '> '> Thanks

Ramco Ramco · Answer

Hi Sachin I agree with u . In future i will take care of these things. In below case is it possible thru aspx or ItemDataBound Thanks

Ramco Ramco · Answer

Hi Jaydeep What should i change in my code. Secondly also i want to check if Status = Approved then days to be subtracted else "-" '> Thanks

Jaydeep Patil · Answer

Okay, got it, check the below URL that will help you to subtract from the date while using repeater in asp.net https://stackoverflow.com/questions/15300124/how-to-do-date-subtraction-on-an-item-in-a-repeater-asp-net td > .Today .Subtract (... use something like this Regards, Jaydeep Patil

Jaydeep Patil · Answer

Hi, Check the below URL and try to fit that into your c# code I think that will solve your problem https://stackoverflow.com/questions/11151976/subtract-days-from-a-datetime Also, if you provide your backend code detail in that case I will suggest more ways for that. Regards, Jaydeep