ASP.NET Core Web API – Error CS1061 'DateTime?' does not contain a definition for 'Date' and no accessible extension method 'Date'

In my ASP.NET Core Web API, I have this code.

public class PagingDto
{
    public int PageSize { get; set; }
    public int PageNumber { get; set; }
}

public class TransactionFilter : PagingDto
{
    public DateTime? StartDate { get; set; }
    public DateTime? EndDate { get; set; }
    public string SearchQuery { get; set; }
}

GetAllTransactions

public IQueryable<Transaction> GetAllTransactions(TransactionFilter filter)
{
    var transactions = _context.Transactions
        .Where(x => x.CreatedDate.Date >= filter.StartDate && x.CreatedDate.Date <= filter.EndDate)
        .Where(x => string.IsNullOrEmpty(filter.SearchQuery) || x.Customer.Name.ToLower().Contains(filter.SearchQuery.ToLower())
    || x.Payment.Status.ToLower().Contains(filter.SearchQuery.ToLower())
    || x.Payment.TransactionReference.ToLower().Contains(filter.SearchQuery.ToLower())
    || x.Payment.MethodOfPayment.ToLower().Contains(filter.SearchQuery.ToLower())
    || x.Payment.Amount.ToString().Contains(filter.SearchQuery))
        .Include(b => b.Payment)
        .Include(b => b.Customer)
        .OrderByDescending(transaction => transaction.CreatedDate);
    return transactions;
}

I want to Query all transactions that falls between StartDate and EndDate using CreatedDate.

But I got thus error:

Severity    Code    Description Project File    Line    Suppression State
Error   CS1061  'DateTime?' does not contain a definition for 'Date' and no accessible extension method 'Date' accepting a first argument of type 'DateTime?' could be found (are you missing a using directive or an assembly reference?)

Then Date is highlighted in

.Where(x => x.CreatedDate.Date >= filter.StartDate && x.CreatedDate.Date <= filter.EndDate)

How do I resolve this?

Thanks

>Solution :

DateTime? is an equivalent of Nullable<DateTime>.

Nullable<T> doesn’t have a property .Date.

You should write:

x.CreatedDate.Value.Date

But you should keep in mind that x.CreatedDate can be null in the runtime. In that case, youll get a NullReferenceExpection`.

So, your logic should support such a case and should contain additional checks not to call x.CreatedDate.Value.Date when x.CreatedDate is null.

Useful links:

• https://learn.microsoft.com/en-us/dotnet/csharp/language-reference/builtin-types/nullable-value-types