Iterating-Through-A-OleDbDataReader


            <%@ Page Language="C#" %>
<%@ import Namespace="System.Data" %>
<%@ import Namespace="System.Data.OleDb" %>

    void Page_Load(object sender, EventArgs e)
    {
        string ConnectionString = Convert.ToString(ConfigurationSettings.AppSettings["AccessConnectString"]);
        string CommandText = "SELECT AuthorName, AuthorCity, AuthorContact_Email, AuthorWebsite FROM Author";
        OleDbConnection myConnection = new OleDbConnection(ConnectionString);
        OleDbCommand myCommand = new OleDbCommand(CommandText, myConnection);
        try {
            myConnection.Open();
            OleDbDataReader myReader = myCommand.ExecuteReader();
        if (myReader.HasRows) {
            while (myReader.Read())
            {
               for (int i=0; i<=(myReader.FieldCount-1); i++)
               {
                  if (myReader.IsDBNull(i))
                  {
                     Label1.Text += "Warning: Field " + i + " is NULL.";
                  }
               }
               Author p = new Author();
               p.Name = myReader.GetString(0);
               p.City = myReader.GetString(1);
               p.Email = myReader.GetString(2);
               p.Website = myReader.GetString(3);
               Label1.Text += p.ToString();
            }
         }
         else
         {
            Label1.Text = "No rows returned";
         }
            if (!(myReader.IsClosed))
            {
               myReader.Close();
            }
        } catch (Exception ex)
        {
            throw (ex);
        }
        finally
        {
            myConnection.Close();
        }
    }
    public class Author
    {
        public string Name;
        public string City;
        public string Email;
        public string Website;
        public Author()
        {}
        public string ToString()
        {
            string description = "";
            description = "Name : " + this.Name + "";
            description += "City : " + this.City + "";
            description += "Contact : " + this.Email + "
";
            description += "Homesite : " + this.Website + "
";
            return description;
        }
    }





    


File: Web.config

    
                 value="Provider=Microsoft.Jet.OLEDB.4.0; Data Source=Books.mdb;" />
ADO Net Database ASP.Net Tutorial
