how to pass the null value into datetime datatype in sql server2008

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hi all,

I have one DOB field in my database and i have one text box in my form with out enter date am click on button, but i got the error like
"Nullable object must have a value." my code like

C#

if (txtdob.Text == "")
           {

                DateTime? value = null;
                record.DOB = value.Value;
           }
           else
           {
               record.DOB = Convert.ToDateTime(txtdob.Text);
           }

how to insert null value into date time field.
please tel me the ans..

Posted 29-Oct-12 1:31am

Santhosh23

Updated 29-Oct-12 1:32am

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Savalia Manoj M · Answer 1 · 2012-10-29T01:42:00

Solution 1

Hi,

Please try this,

record.DOB = System.DBNull.Value;

May be help you....

Posted 29-Oct-12 1:42am

Savalia Manoj M

Bitla Phanindra · Answer 2 · 2012-10-29T01:48:00

Solution 2

You can use Nullable Types to achieve that.

XML

Nullable<DateTime> _myDateTime;

Check for nulls:

C#

if (object.myDateTime != null)

or

C#

if (object.myDateTime.HasValue)

Hope that helps.

Don't forget to mark answers that helped you! :)

Posted 29-Oct-12 1:48am

Bitla Phanindra

Comments

Santhosh23 29-Oct-12 7:57am

a tried your code i got the this type of error
Nullable object must have a value.

Bitla Phanindra 29-Oct-12 8:02am

Does the database column allow nulls?