How to convert DateTime to DateTime

Question

I want to convert a nullable DateTime  DateTime    to a DateTime  but I am getting an error      Cannot implicitly convert type  System DateTime   to    System DateTime   An explicit conversion exists  are you missing a   cast     I have attempted the following   DateTime UpdatedTime    DateTime  objHotelPackageOrder UpdatedDate    null        DateTime Now    objHotelPackageOrder UpdatedDate

User · Answer

You need to call the Value property of the nullable DateTime. This will return a DateTime.

Assuming that UpdatedDate is DateTime?, then this should work:

DateTime UpdatedTime = (DateTime)_objHotelPackageOrder.UpdatedDate == null ? DateTime.Now : _objHotelPackageOrder.UpdatedDate.Value;

To make the code a bit easier to read, you could use the HasValue property instead of the null check:

DateTime UpdatedTime = _objHotelPackageOrder.UpdatedDate.HasValue
                          ? _objHotelPackageOrder.UpdatedDate.Value
                          : DateTime.Now;

This can be then made even more concise:

DateTime UpdatedTime = _objHotelPackageOrder.UpdatedDate ?? DateTime.Now;

User · Answer

Try this  DateTime UpdatedTime    objHotelPackageOrder UpdatedDate    DateTime Now

User · Answer

You want to use the null-coalescing operator  which is designed for exactly this purpose   Using it you end up with this code   DateTime UpdatedTime    objHotelPackageOrder UpdatedDate    DateTime Now

User · Answer

Consider using the following which its far better than the accepted answer  DateTime UpdatedTime    objHotelPackageOrder UpdatedDate    null        DateTime Now    DateTime  objHotelPackageOrder UpdatedDate

User · Answer

How about the following   DateTime UpdatedTime    objHotelPackageOrder UpdatedDate HasValue    objHotelPackageOrder UpdatedDate value   DateTime Now

User · Answer

MS already made a method for this  so you dont have to use the null coalescing operator  No difference in functionality  but it is easier for non-experts to get what is happening at a glance   DateTime updatedTime    objHotelPackageOrder UpdatedDate GetValueOrDefault DateTime Now

User · Answer

Here is a snippet I used within a Presenter filling a view with a Nullable Date Time   memDateLogin   m memDateLogin    DateTime MinValue

User · Answer

You can also try Nullable T  Properties   DateTime UpdatedTime    objHotelPackageOrder UpdatedDate HasValue        DateTime Now    objHotelPackageOrder UpdatedDate Value

User · Answer

Try this   DateTime UpdatedTime    DateTime  objHotelPackageOrder UpdatedDate    null   DateTime Now    objHotelPackageOrder UpdatedDate Value

User · Answer

DateTime UpdatedTime    objHotelPackageOrder HasValue    objHotelPackageOrder UpdatedDate Value   DateTime Now

User · Answer

You can use a simple cast   DateTime dtValue    DateTime  dtNullAbleSource    As  Leandro Tupone said  you have to check if the var is null before

[c#] How to convert DateTime? to DateTime

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