Prompt Title: New chatuhdhuadu8ad

Sure, here's an example code in C# Windows Forms using ComboBox to calculate the total cost of attending a workshop:

csharpCopy code
private void Form1_Load(object sender, EventArgs e)
{
    // Populate ComboBoxes
    cbWorkshop.Items.AddRange(new string[] { "Handling Stress", "Time Management", "Supervision Skills", "Negotiation", "How to Interview" });
    cbLocation.Items.AddRange(new string[] { "Austin", "Chicago", "Dallas", "Orlando", "Phoenix", "Raleigh" });
}

private void btnCalculate_Click(object sender, EventArgs e)
{
    // Get selected workshop and location
    string workshop = cbWorkshop.SelectedItem.ToString();
    string location = cbLocation.SelectedItem.ToString();

    // Get registration fee and number of days from workshop
    int regFee = 0;
    int days = 0;
    switch (workshop)
    {
        case "Handling Stress":
            regFee = 1000;
            days = 3;
            break;
        case "Time Management":
            regFee = 800;
            days = 3;
            break;
        case "Supervision Skills":
            regFee = 1500;
            days = 3;
            break;
        case "Negotiation":
            regFee = 1300;
            days = 5;
            break;
        case "How to Interview":
            regFee = 500;
            days = 1;
            break;
        default:
            MessageBox.Show("Please select a workshop.");
            return;
    }

    // Get lodging fee per day from location
    int lodgingFee = 0;
    switch (location)
    {
        case "Austin":
            lodgingFee = 150;
            break;
        case "Chicago":
            lodgingFee = 225;
            break;
        case "Dallas":
            lodgingFee = 175;
            break;
        case "Orlando":
            lodgingFee = 300;
            break;
        case "Phoenix":
            lodgingFee = 175;
            break;
        case "Raleigh":
            lodgingFee = 150;
            break;
        default:
            MessageBox.Show("Please select a location.");
            return;
    }

    // Calculate total cost
    int totalCost = regFee + lodgingFee * days;

    // Display total cost
    MessageBox.Show($"The total cost for attending {workshop} in {location} is {totalCost:C}.");
}

In this example, cbWorkshop and cbLocation are ComboBox controls in the Windows Form. The Form1_Load method is used to populate these ComboBoxes with the workshop names and location names, respectively. The btnCalculate_Click method is used to calculate the total cost when the user clicks the "Calculate" button.

The method first gets the selected workshop and location from the ComboBoxes, then uses a switch statement to look up the registration fee and number of days for the selected workshop, as well as the lodging fee per day for the selected location. It then calculates the total cost by adding the registration fee to the lodging fee multiplied by the number of days. Finally, it displays the total cost in a MessageBox.