How to bind a datagrid

void BindGrid()
      {
          string strSQLconnection = "Data Source=SERVERNAME;Initial Catalog=DBNAME;Integrated Security=True";
          SqlConnection sqlConnection = new SqlConnection(strSQLconnection);
          SqlCommand sqlCommand = new SqlCommand("select * from TABLE", sqlConnection);
          sqlConnection.Open();

          SqlDataReader reader = sqlCommand.ExecuteReader();

          GridView1.DataSource = reader;
          GridView1.DataBind();
      }