Question

Looking for some help here: Edit GetPhoneData to add more input validation by setting ranges for values

• Brands (Samsung, iPhone, Google)
• Models (Galaxy, Note, 8, X, Pixel)
• Price ($0.01-$2000)
• Include a comment about your addition, you can be creative, add components (or not), individualize this.
• Extra Credit (Samsung must be paired to Galaxy or Note) 2 points

Below is the code: using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

namespace Cell_Phone_Test

{

  public partial class cellPhoneTutorial : Form

  {

    public cellPhoneTutorial()

    {

      InitializeComponent();

    }

    // The GetPhoneData method accepts a CellPhone object

    // as an argument. It assigns the data entered by the

    // user to the object's properties.

    private void GetPhoneData(CellPhone phone)

    {

      // Temporary variable to hold the price.

      decimal price;

      // Get the phone's brand.

      phone.Brand = brandTextBox.Text;

      // Get the phone's model.

      phone.Model = modelTextBox.Text;

      // Get the phone's price.

      if (decimal.TryParse(priceTextBox.Text, out price))

      {

        phone.Price = price;

      }

      else

      {

        // Display an error message.

        MessageBox.Show("Invalid price");

      }

    }

    private void CreateObjectButton_Click(object sender, EventArgs e)

    {

      // Create a CellPhone object.

      CellPhone myPhone = new CellPhone();

      // Get the phone data.

      GetPhoneData(myPhone);

      // Display the phone data.

      brandLabel.Text = myPhone.Brand;

      modelLabel.Text = myPhone.Model;

      priceLabel.Text = myPhone.Price.ToString("c");

    }

    private void exitButton_Click(object sender, EventArgs e)

    {

      // Close the form.

      this.Close();

    }

    

  }

}

Answer 1

In case of any query do comment. Please rate answer. Thanks

Note: Only providing .cs code as you already have form design. If you still need form Code do let me know.

Code:

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Globalization;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using System.Windows.Forms;

namespace Cell_Phone_Test

{

    public partial class cellPhoneTutorial : Form

    {

        //List to hold valid ranges for Brands and models

        List<string> Brands = new List<string>() { "Samsung", "iPhone", "Google" };

        List<string> Models = new List<string>() { "Galaxy", "Note", "8", "X", "Pixel" };

        public cellPhoneTutorial()

        {

            InitializeComponent();

        }

        // The GetPhoneData method accepts a CellPhone object

        // as an argument. It assigns the data entered by the

        // user to the object's properties.

        private void GetPhoneData(CellPhone phone)

        {

            // Temporary variable to hold the price.

            decimal price;

            string brand, model;

            bool validBrand = false, validModel = false, validSamsungModel = true, validPrice = false;

            brand = brandTextBox.Text;

            model = modelTextBox.Text;

            //Find the entered brand in Brand ranges

            validBrand = Brands.Any(x => x.Equals(brand,StringComparison.OrdinalIgnoreCase));

           

               

            //find the entered model in model ranges

            validModel = Models.Any(x => x.Equals(model,StringComparison.OrdinalIgnoreCase));

            //If model and brand are valid then look for pair, currently only looking for Samsung with Note and Galaxy

            if (validBrand && validModel)

            {

                //if brand is Samsung

                if (brand.Equals("Samsung", StringComparison.OrdinalIgnoreCase))

                {

                    //Brand is Samsung and model is not Galaxy or Note then validModel is false

                    if (!(model.Equals("Galaxy", StringComparison.OrdinalIgnoreCase)

                         || model.Equals("Note", StringComparison.OrdinalIgnoreCase)))

                    {

                        validModel = false;

                        validSamsungModel = false;

                    }

                }

                //so if brand is not samsung and models are in Galaxy or Note then again invalid brand

                else if (model.Equals("Galaxy", StringComparison.OrdinalIgnoreCase)

                || model.Equals("Note", StringComparison.OrdinalIgnoreCase))

                {

                    validBrand = false;                   

                }

            }         

            // Get the phone's brand. show the message if invalid brand

            if(validBrand)

                phone.Brand = brand;

            else

                MessageBox.Show("Invalid brand", "Cell_Phone_Test");

            // Get the phone's model. show the message if invalid model

            if (validModel && validSamsungModel)

                phone.Model = model;

            else

            {

                if(!validSamsungModel)

                    MessageBox.Show("Invalid Samsung model", "Cell_Phone_Test");

                else

                    MessageBox.Show("Invalid model", "Cell_Phone_Test");

            }

           

            // Get the phone's price.show the message if invalid price

            if (decimal.TryParse(priceTextBox.Text, out price))

            {

                if (price >= .01m && price <= 200)

                {

                    phone.Price = price;

                    validPrice = true;

                }

            }          

               

            // Display an error message.

            if(!validPrice)

            MessageBox.Show("Invalid price", "Cell_Phone_Test");         

        }

        private void CreateObjectButton_Click(object sender, EventArgs e)

        {

            //clear the labels first

            brandLabel.Text = "";

            modelLabel.Text = "";

            priceLabel.Text = "";

            // Create a CellPhone object.

            CellPhone myPhone = new CellPhone();

            // Get the phone data.

            GetPhoneData(myPhone);

            // Display the phone data.

            brandLabel.Text = myPhone.Brand;

            modelLabel.Text = myPhone.Model;

            //priceLabel.Text = myPhone.Price.ToString("c");

            priceLabel.Text = string.Format(new CultureInfo("en-us"), "{0}", myPhone.Price);

        }

        private void exitButton_Click(object sender, EventArgs e)

        {

            // Close the form.

            this.Close();

        }       

    }

}

Output: