How to search data in database and add it to textboxes in C#.NET?

How to search data in database and add it to textboxes in C#.NET?

I have multiple data in database so i need to add them in different
textBoxes. here is my code
private void Search_button1_Click(object sender, EventArgs e)
{
string query = string.Empty;
if (ID_textBox1.Text.Trim().Length > 0)
{
try
{
query = "SELECT
ProductName,ProductDescription,SellPrice FROM Table2
WHERE ProductID='" + ID_textBox1.Text+ "'";
SqlConnection Conn =
CreateConnection.create_connection();
SqlCommand cd = new SqlCommand(query, Conn);
SqlDataReader reader = cd.ExecuteReader();
while (reader.Read())
{
Name_textBox2.Text =
reader["ProductName"].ToString();
Description_textBox3.Text
=reader["ProductDescription"].ToString();
Unit_Price_textBox5.Text =
reader["SellPrice"].ToString();
}
reader.Close();
Name_textBox2.Text = Name_textBox2.Text;
Description_textBox3.Text = Description_textBox3.Text;
QTY_textBox4.Text = 1.ToString();
Unit_Price_textBox5.Text = Unit_Price_textBox5.Text;
Price_textBox6.Text =
(decimal.Parse(QTY_textBox4.Text) *
decimal.Parse(Unit_Price_textBox5.Text)).ToString();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
}