Execute particular function or code only when DataReader has rows in C# .Net

How To Run Query if DataReader has some value??

ocmd.CommandText = s2;
                odr = ocmd.ExecuteReader();
                while (odr.Read())
                {
                    
                    int LateComeDate = (int)odr["TimeDiffDate"];
                    textBox1.Text = LateComeDate.ToString();
                    Double TimeDiff = (Double)odr["TimeDiff"];
                    textBox2.Text = TimeDiff.ToString();
                }
                odr.Close();

i want to run while code only if datareader Result Some Value..