Question

I am building a web application that is going to show the upcoming birthdays of a list of people stored in a SQL Server 2008 DB. I can’t figure out how to query all records in the DB that are within 30 days of today’s date.

Here’s what I have so far:

using (HumanResourcesDB db = newH umanResourcesDB(ConfigurationManager.ConnectionStrings["HumanResourcesDB"].ConnectionString))
            {
                DateTime todaysDate = DateTime.Now;

                List<Employee> record =
                (from tab in db.Employees
                 where tab.Birthday between DateTime.Now and todaysDate.AddDays(30) 
                 select tab).ToList();
                this.grdBirthdays.DataSource = record;
                this.grdBirthdays.DataBind();
            }

of course the “between” and “and” don’t work that’s what I need filled in. I’ve searched the net for a little while to no avail. Any help?

Answer 1

Just use a greater than and less than

using (HumanResourcesDB db = newHumanResourcesDB(ConfigurationManager
            .ConnectionStrings["HumanResourcesDB"].ConnectionString))
{
    List<Employee> record = (from tab in db.Employees
     where tab.Birthday >= DateTime.Today
     && tab.Birthday < DateTime.Today.AddDays(31)
     select tab).ToList();

    this.grdBirthdays.DataSource = record;

    this.grdBirthdays.DataBind();
}

Also I should mention that I have used DateTime.Today rather than DateTime.Now because today represents the start of the day as 00:00:00.000. If someones birthday is set to whatever today is at 00:00:00.000 and you have used DateTime.Now (let’s assume it’s 8:00 in the morning). There birthday will not be included in this range because it is considered before “now”.