Calendar show only current month date in c#

Calendar show only current month date.

//***********************************day render create cell load time**********

 protected void Calendar1_DayRender(object sender, DayRenderEventArgs e)

 if (dr.Read())

                {

                    int i;

                    for (i = 1; i <= 31; i++)

                    {

                        if (e.Day.Date.Day == i)

                        {

                            if (dr["D" + i].ToString() == "1")

                            {

                                e.Cell.BackColor = Color.Green;

                            }

                            else if (dr["D" + i].ToString() == "0")

                            {

                                e.Cell.BackColor = Color.Red;

                            }

                            else if (dr["D" + i].ToString() == "2")

                            {

                                e.Cell.BackColor = Color.Yellow;

                            }

                            else

                            {

                                e.Cell.BackColor = Color.White;

                          }

                      }

                  }

   }

            }

            else

  { 

e.Cell.Text = ""; 

}