Question

public IEnumerable GetAddress()
{
     DataSet ds = DataOps.GetDataSet(string.Format(" select * from Students"));
     DataTable dt = ds.Tables[0];
     // What goes here?
}

I need to use IEnumerable methods

How can i return enumeration of DataRows containing all students that have addresses only?

Answer 1

I think what you are looking is

DataRow[] dr = ds.Tables[0].Select("Address NOT NULL"); // you want filtering on address column
    foreach (DataRow row in dr)
    {

    }