pass the null value when datetime is not filled by user?

Question

4.00/5 (1 vote)

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C#

IFormatProvider provider1 = new System.Globalization.CultureInfo("en-CA", true);
       String reservedate = txtreservedate.Text.Trim().ToString();
       if (!string.IsNullOrEmpty(reservedate))
       {
           DateTime datereservered = DateTime.Parse(reservedate, provider1, System.Globalization.DateTimeStyles.NoCurrentDateDefault);
           objvehiclePL.reserveddate = datereservered;
       }
       else
       {
           objvehiclePL.reserveddate = Convert.ToDateTime(null);
       }

here i get exception at else condition .. please help me?

exception

SqlDateTime overflow. Must be between 1/1/1753 12:00:00 AM and 12/31/9999 11:59:59 PM.

Posted 6-Apr-14 18:11pm

ramaraog96

Updated 6-Apr-14 20:05pm

v3

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jacobjohn196 · Answer 1 · 2014-04-06T18:24:00

Solution 1

Hi,
You cannot convert a null value into datetime format.

This would help you.
How to convert null string to datetime[^]

Posted 6-Apr-14 18:24pm

jacobjohn196

Peter Leow · Answer 2 · 2014-04-06T18:39:00

Use TryParse method, see the following example:

C#

using System;

public class Program
{
    public static void Main()
    {
        string dateString = null;
        //string dateString = "";
        //string dateString = "2014-4-7";

        DateTime dt;

        Console.WriteLine(DateTime.TryParse(dateString, out dt));

    }
}

You should always use TryParse if you allow users to enter date for invalid date, including null and empty string.
My suggestion is use a datepicker or calender control which will always returns a valid date and save you all this hassle.

ArunRajendra · Answer 3 · 2014-04-06T21:22:00

Solution 3

Just pass null value as shown.

objvehiclePL.reserveddate = System.DBNull;

Posted 6-Apr-14 21:22pm

ArunRajendra

Comments

[no name] 7-Apr-14 3:25am

hi arjun..
here reserveddate has datetime datatype..
if i enter "system.DBNull" shows an error