How to see DateTimePicker is NULL

[Rinaldo]

Hi,

I have the following code:

DateTimePicker datum = (DateTimePicker)sender;

string HuidigeDatum = datum.Text.ToString().Trim();
if (HuidigeDatum == "")
{
MessageBox.Show("Datumveld is leeg.");

}

How to see if the field is empty. The code above doesn't work.

Rinaldo

 

[Rinaldo]

Try:
if (String.IsNullOrEmpty(HuidigeDatum))

rossum

Unfortnually is don't work. The field is filled in but the database gives an
error.

 

[Family Tree Mike]

Hi,

I have the following code:

DateTimePicker datum = (DateTimePicker)sender;

string HuidigeDatum = datum.Text.ToString().Trim();
if (HuidigeDatum == "")
{
MessageBox.Show("Datumveld is leeg.");
}

How to see if the field is empty. The code above doesn't work.

Rinaldo

Since DateTime is not nullable, your string should never be "". Are you
getting an error, and if so, what is the error?

 

[Rinaldo]

Hi Mike,

It is from a datetimepicker textbox. If I do not enter a value but leave it
on the date thats given the database gives an error that the field can not
be empty or null. Somewhere must a value be null or empty, but where?