Question

I have asp.net application and am using Entity Framework to connect it with the database. in this application, I have a textbox to get the date(am using calender css style here), and its in the string type.

I have a column in my database and its in Date Time format, I need to compare the textbox value with the date column in my database, for this I just used the code as

public StudentAttendances(string date)
    {
        if (date != "")
        {
            DateTime date1 = Convert.ToDateTime(date);

            foreach (DataAccess.StudentAttendance studentAttendance in buDataEntities.StudentAttendances.Where(s => s.Date == date1))
            {
                this.Add(new StudentAttendance(studentAttendance.StudentId));
            }
        }
    }

for example if I select a date in my textbox(the format is 04/05/2012) and when I compare this with the database its not showing any data, but actually some datas are there for this date.

Answer 1

Your code is comparing both day and time (hours, minutes etc will have to match). Try comparing just the day part like this:

buDataEntities.StudentAttendances.Where(s => s.Date.Subtract(date1).Days == 0)

I also think that you should specify what format the input date from the users is in.
04/05/2012 may mean both 4th April or 5th of May depending on your computers regional setting.
Here is an example (below) for converting a date string in American format to DateTime object:

DateTime date1 = DateTime.Parse(date, new CultureInfo("en-US"));

Hope that helps!