protected void Page_Load(object sender, EventArgs e) { ClassConnection NewConnection = new ClassConnection(); NewConnection.Connection_Today(); SqlCommand comm = new SqlCommand(); comm.Connection = ClassConnection.conn; // There are two field in the table but int is (1,1) so parameter // is not required. comm.CommandText = "insert into Testing values (@name)"; comm.Parameters.AddWithValue("name", TextBox1.Text); comm.ExecuteNonQuery(); }