Alright so, i have got most of the things working except when i want to order something else like Pizza the Add-On items should change to Pepperoni, Sausage, Olives or Salad the Add-On items should change to Croutons, Bacon bits, Bread stick but its not changing. Here is what i have got so far:

enter code here public partial class Form1 : Form
{
    decimal Subtotal;
    decimal Tax = 0.0775m;
    decimal OrderTotal;

    public Form1()
    {
        InitializeComponent();
    }

    private void button1_Click(object sender, EventArgs e)
    {
        decimal add = 0m;
        if (chk1.Checked)
        {
            add  ;
        }
        if (chk2.Checked)
        {
            add  ;
        }
        if (chk3.Checked)
        {
            add  ;
        }
        if (rdoHamburger.Checked)
        {
            decimal Hamburger = Convert.ToDecimal(rdoHamburger.Checked);
            Hamburger = 6.95m;

            Subtotal = Hamburger   (add * .75m);
            Tax = Subtotal * 0.0775m;
            OrderTotal = Tax   Subtotal;

            textBox1.Text = Subtotal.ToString("c");
            textBox2.Text = Tax.ToString("c");
            textBox3.Text = OrderTotal.ToString("c");

        }
        else if (rdoPizza.Checked)
        {

            decimal Pizza = Convert.ToDecimal(rdoPizza.Checked);
            Pizza = 5.95m;

            Subtotal = Pizza   (add * .50m);

            Tax = Subtotal * 0.00775m;

            OrderTotal = Tax   Subtotal;

            textBox1.Text = Subtotal.ToString("c");
            textBox2.Text = Tax.ToString("c");
            textBox3.Text = OrderTotal.ToString("c");


        }
        else if (rdoSalad.Checked)
        {

            decimal salad = Convert.ToDecimal(rdoSalad.Checked);
            salad = 4.95m;

            Subtotal = salad   (add * .25m);

            Tax = Subtotal * 0.0775m;
            OrderTotal = Tax   Subtotal;
            textBox1.Text = Subtotal.ToString("c");
            textBox2.Text = Tax.ToString("c");
            textBox3.Text = OrderTotal.ToString("c");
        }
    }

    private void groupBox1_Enter(object sender, EventArgs e)
    {
        if (rdoHamburger.Checked)
        {
            gbxAddOnItems.Text = "Add-on items ($.75 each)";
            chk1.Text = "Lettuce, tomato and ketchup";
            chk2.Text = "Ketchup , mustard and mayo";
            chk3.Text = "French fries";

            chk1.Checked = false;
            chk2.Checked = false;
            chk3.Checked = false;

            textBox1.Clear();
            textBox2.Clear();
            textBox3.Clear();

        }
        else if (rdoPizza.Checked)
        {
            gbxAddOnItems.Text = "Add-on items ($.50 each)";
            chk1.Text = "Pepperoni";
            chk2.Text = "Sausage";
            chk3.Text = "Olives";

            chk1.Checked = false;
            chk2.Checked = false;
            chk3.Checked = false;

            textBox1.Clear();
            textBox2.Clear();
            textBox3.Clear();

        }
        else if (rdoSalad.Checked)
        {
            gbxAddOnItems.Text = "Add-on items ($.25 each)";
            chk1.Text = "Croutons";
            chk2.Text = "Bacon bits";
            chk3.Text = "Bread Sticks";

            chk1.Checked = false;
            chk2.Checked = false;
            chk3.Checked = false;

            textBox1.Clear();
            textBox2.Clear();
            textBox3.Clear();
        }
        textBox1.Clear();
        textBox2.Clear();
        textBox3.Clear();
    }

    private void button2_Click(object sender, EventArgs e)
    {
        string message = "Thank You for Using Our Service!\n Would You Like use our service again?";
        DialogResult button =
            MessageBox.Show(message, "Dear Customer",
            MessageBoxButtons.YesNo,
            MessageBoxIcon.Information);

        if (button == DialogResult.No)
        {
            this.Close();
        }
        if (button == DialogResult.Yes)
        {
            MessageBox.Show("Thank You!! \n We Hope you will come Soon!", "Greeting      Message");
            this.Close();
        }


    }
}

...

Image of the project i want to get done I would be grateful if anyone could help have 2 days left.

CodePudding user response：

Have you tried this.refresh() or Application.DoEvents()?

CodePudding user response：

you problem is that you are updating that menu using the Enter event. This is triggered if the user tabs into that control see https://docs.microsoft.com/en-us/dotnet/api/system.windows.forms.control.enter?view=windowsdesktop-6.0

This is not what you want , you want to run that update code based on the click events of the pizza / etc checkboxes