Datetime in C add days

Question

I want to add days in some date  I have a code like this    DateTime endDate   Convert ToDateTime this txtStartDate Text    Int64 addedDays   Convert ToInt64 txtDaysSupp Text    endDate AddDays addedDays    DateTime end   endDate   this txtEndDate Text   end ToShortDateString      But this code is not working  days are not added  What the stupid mistake I m doing

User · Answer

Assign the enddate to some date variable because AddDays method returns new Datetime as the result    Datetime somedate endDate AddDays 2

User · Answer

Its because the AddDays   method returns a new DateTime  that you are not assigning or using anywhere   Example of use   DateTime newDate   endDate AddDays 2

User · Answer

You can add days to a date like this      add days to current   DateTime   var addedDateTime   DateTime Now AddDays 10       add days to current   Date   var addedDate   DateTime Now Date AddDays 10       add days to any DateTime variable var addedDateTime   anyDate AddDay 10

User · Answer

Use this   DateTime dateTime    DateTime Now  DateTime  newDateTime   null  TimeSpan numberOfDays   new TimeSpan 2  0  0  0  0   newDateTime   dateTime Add numberOfDays

User · Answer

You need to catch the return value   The DateTime AddDays method returns an object who s value is the sum of the date and time of the instance and the added value   endDate   endDate AddDays addedDays

User · Answer

Why do you use Int64  AddDays demands a double-value to be added  Then you ll need to use the return-value of AddDays  See here

User · Answer

DateTime is immutable   That means you cannot change it s state and have to assign the result of an operation to a variable   endDate   endDate AddDays addedDays

[c#] Datetime in C# add days

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