date convertions is set to zero

Hi there,

When you say "empty" I presume you mean blank, no date at all, or in proper terms - null? If you want to submit a null date value to your databse, make sure your data column allows nulls then set the value to null. Do no try to pass in empty strings - this wont work - unless you are using a varchar or nchar field for stroing adtes which is bad practice anyway...

Without your code this is very hard but your code should look something like this:

DateTime? DateToSubmit = null;
if(!string.IsNullOrEmpty(txtDate.text))
{
    DateTime.TryParse(txtDate.Text, out DateToSubmit);
}
//Submit DateToSubmit to your database
//If field is DateTime
MyDataObject.MyDate = DateToSubmit;
//or if field is string
MyDataObject.MyDate = DateToSubmit.HasValue ? DateToSubmit.Value.ToString() : "";

Hope this helps,
Ed

If your table accept NULL value, set it DBNULL.Value.
If not, set default date, like '1900-01-01'.