Question

i have datasource control and listView control

the datasource have

“StudentID,StudentName , Birthday ,Gander(M,F),Course_ID”

i want to display in my listView

(“Age -> not BirthDay,Gander(male, female)->not f or’ m, And
CourseName -> not courseID :))

i write some methods for do this work like this

    public  string CalculateAge(DateTime birthDate)
      {
            // cache the current time
            DateTime now = DateTime.Today; // today is fine, don't need the timestamp from now
            // get the difference in years
            int years = now.Year - birthDate.Year;
            // subtract another year if we're before the
            // birth day in the current year
            if (now.Month < birthDate.Month || (now.Month == birthDate.Month && now.Day < birthDate.Day))
                 --years;

            return years.ToString(CultureInfo.InvariantCulture);
      }

but how i can use this methods in my aspx file with Eval() in my ListView? Note: I wrote this method in a different namespace

Answer 1

You shouldn’t have a problem using this in a ListView. Something like this should work:

<%# CalculateAge((DateTime)Eval("SomeDate")) %>

If this function is contained within a library that implements IDisposable, you can create a pass-through function in the code-behind:

public string CalculateAge(DateTime birthDate)
{
    using (var obj = new MyObject())
    {
        return obj.CalculateAge(birthDate);
    }
}