Question

I want to sort my data which are bound to the dropdown.

I fetch the name of students from database but thought i can’t directly use the orderby.

Because the data i get from the database is student id which is of Guid type.

Then i am finding the full name from the id.

Here’s the code

public DataTable GetAllStudentNameFromMentor(Guid MentorId)
        {
            DataTable AllStudents = new DataTable();
            AllStudents.Columns.Add("StudentID", typeof(Guid));
            AllStudents.Columns.Add("studentName", typeof(string));
             var allm = from sm in Db.StudentMentor
                       where sm.MentorID.Equals(MentorId)
                       select sm;

            foreach (var v in allm)
            {
                string studentname = BussinesCollection.BussinesPerson.GetFullName(v.StudentID.Value);
                AllStudents.Rows.Add(v.StudentID,studentname);
            }
            return AllStudents;
        }

I am binding the table in dropdown.

ddlstudent.DataSource = m.bussinesCollection.BussinesMentor.GetAllStudentNameFromMentor(MentorID);
        ddlstudent.DataBind();

But I want the names should be in alphabetical order.

Would anyone like to help me..

Answer 1

We can sort datatable using dataview as below :

1. First convert the datatable to dataview and then sort

DataView dataView = new DataView(AllStudents);

dataView.Sort = "studentName ASC";