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PORadio button and display
 

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    <p>I have a <code>ListBox</code> , <code>Button</code> and <code>RadioButton</code>. When I click a <code>button</code>, different kind of drink will list out on the <code>ListBox</code>. </p> <p>I want let user select drinks size and show out the price. When user check <code>large radio button</code> large size price will show out. The price was link with the database. </p> <p>The problem is when I select the radio button, the price won't show until I click the drinks button again. I want the price show when then radio button was checked.</p> <p>Here is my coding</p> <pre><code>private void signatureMilkTeaButton_Click(object sender, EventArgs e) { listBox1.Items.Clear(); string constring = "datasource=localhost;port=3306;username=root;password=000"; string Query = "select* from database.drinks where drinks_Type ='M';"; MySqlConnection connectDatabase = new MySqlConnection(constring); MySqlCommand commandDataBase = new MySqlCommand(Query, connectDatabase); MySqlDataReader myReader; try { connectDatabase.Open(); myReader = commandDataBase.ExecuteReader(); while (myReader.Read()) { string sName = myReader.GetString("drinks_Name"); listBox1.Items.Add(sName); } { decimal MMPrice = myReader.GetDecimal("drinks_MPrice"); decimal MLPrice = myReader.GetDecimal("drinks_LPrice"); if (MediumButton.Checked == true ) { textBox1.Text = MMPrice.ToString(); } else if (largeButton.Checked == true) { textBox1.Text = MLPrice.ToString(); } }*/ } catch (Exception ex) { MessageBox.Show(ex.Message); } } </code></pre>
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