ExecuteNon query error at date time

Question

SqlCommand cmd = new SqlCommand("INSERT INTO Monitor VALUES(@LCDSrNo, @ProductName, @LCDProductNo, @Date)", con);

cmd.CommandType = CommandType.Text;

cmd.Parameters.AddWithValue("@LCDSrNo", textBox2.Text);

cmd.Parameters.AddWithValue("@ProductName", textBox3.Text);

cmd.Parameters.AddWithValue("@LCDProductNo", textBox4.Text);

cmd.Parameters.AddWithValue("@Date", dateTimePicker1);

con.Open();

cmd.ExecuteNonQuery();

con.Close();