Question

Can you solve this proble by using C# application? C# is one of programming languages supported by Visual Studio 2015. It combines the features of Java and C ++ and is suitbale for rapid application development.

A retail company must file a monthly sales tax report listing the total sales for the month, and the amount of state and county sales tax collected. The state sales tax rate is 4% and the county sales tax rate is 2%. Create an application that allows the user to enter the total sales from the month.

From this figure, the application should calculate and display the following:

1. The amount of country sales tax

2. The amount of state sales tax

3. The total sales tax (county plus state)

The following represents the requirements for this project:

1. The project should be named Project1

2. When saving the project, uncheck the “Create directory for solution” checkbox.

3. The form (file and object name) should be renamed from Form1 to frmMain

4. The form layout should be very similar to the following in terms of control alignment, sizes, spelling, meaningful labels and an overall professional look:

5. When the application is run have the form display in the middle of the screen.

6. Set the Form Accept and Cancel Button properties.

7. The label controls for the County, State and Total Sales Tax should be contained within a Group Box.

8. The labels which display the type of sales tax should all be aligned to the right.

9. The labels which display each of the sales tax should have the Border Style property set to Fixed3D.

10. Each button control should have an access key defined.

Once you are done with the final design of the form layout then lock all the controls.

13. In the code, add the following comment lines at the top of the file. Replace the with the appropriate information.

//Project: Project #1

//Programmer:

14. In the code, represent the county tax rate (0.02) and the state tax rate (0.04) as named constants. Use the named constants in the mathematical statements.

15. The Calculate button should use the amount from the Total Monthly Sales textbox to calculate and display the County Sales Tax, State Sales Tax and Total Sales Tax. The display amounts should be formatted to currency with two decimal places. If the user fails to enter numeric values, display an appropriate error message and do not attempt to perform the calculations. A Try-Catch block should be used to catch any invalid data entered for the Total Monthly Sales.

16. The Clear button should clear the textbox and all the calculated sales tax labels. It should then set the focus back to the textbox control.

17. The Exit button should cause the application to end.

18. Use the following test data to determine whether the application is calculating properly.

Total Monthly Sales Taxes Amount 9500 County Sales Tax $190.00 State Sales Tax $380.00 Total Sales Tax $570.00 5000 County Sales Tax $100.00 State Sales Tax $200.00 Total Sales Tax $300.00 15000 County Sales Tax $300.00 State Sales Tax $600.00 Total Sales Tax $900.00

Answer 1

Program.cs
--------------------------------------
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace Sales_Tax_and_Total
{
    static class Program
    {
        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new Form1());
        }
    }
}
-----------------------------------------
Form1.cs
------------------------
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace Sales_Tax_and_Total
{
    public partial class Form1 : Form
    {
        private const decimal STATE_TAX_RATE = 0.04m;
        private const decimal COUNTY_TAX_RATE = 0.02m;

        public Form1()
        {
            InitializeComponent();
        }

        private void btnCalculate_Click(object sender, EventArgs e)
        {
            try
            {
                // Set variables.
                decimal purchasePrice;
                decimal stateTax;
                decimal countyTax;
                decimal totalTax;
                decimal totalPrice;

                // Get the purchase price.
                purchasePrice = decimal.Parse(txtPurchasePrice.Text);

                // Calculate the price.
                stateTax = purchasePrice * STATE_TAX_RATE;
                countyTax = purchasePrice * COUNTY_TAX_RATE;
                totalTax = stateTax + countyTax;
                totalPrice = purchasePrice + totalTax;

                // Display the prices.
                txtPurchasePrice.Text = purchasePrice.ToString("c");
                lblStateTax.Text = stateTax.ToString("c");
                lblCountyTax.Text = countyTax.ToString("c");
                lblTotalTax.Text = totalTax.ToString("c");
                lblTotalPrice.Text = totalPrice.ToString("c");
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }

            // Set focus to clear button.
            btnClear.Focus();
        }

        private void btnClear_Click(object sender, EventArgs e)
        {
            // Clear controls.
            txtPurchasePrice.Text = "";
            lblStateTax.Text = "";
            lblCountyTax.Text = "";
            lblTotalTax.Text = "";
            lblTotalPrice.Text = "";

            // Set focus to text box.
            txtPurchasePrice.Focus();
        }

        private void btnExit_Click(object sender, EventArgs e)
        {
            // Close the form.
            this.Close();
        }
    }
}
--------------------------------------------------------------------------
Form1.Designer.cs
---------------------------------
namespace Sales_Tax_and_Total
{
    partial class Form1
    {
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.IContainer components = null;

        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        #region Windows Form Designer generated code

        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
            this.lblPurchasePriceCaption = new System.Windows.Forms.Label();
            this.lblStateTaxCaption = new System.Windows.Forms.Label();
            this.lblCountyTaxCaption = new System.Windows.Forms.Label();
            this.lblTotalTaxCaption = new System.Windows.Forms.Label();
            this.lblTotalPriceCaption = new System.Windows.Forms.Label();
            this.txtPurchasePrice = new System.Windows.Forms.TextBox();
            this.lblStateTax = new System.Windows.Forms.Label();
            this.lblCountyTax = new System.Windows.Forms.Label();
            this.lblTotalTax = new System.Windows.Forms.Label();
            this.lblTotalPrice = new System.Windows.Forms.Label();
            this.btnCalculate = new System.Windows.Forms.Button();
            this.btnClear = new System.Windows.Forms.Button();
            this.btnExit = new System.Windows.Forms.Button();
            this.SuspendLayout();
            //
            // lblPurchasePriceCaption
            //
            this.lblPurchasePriceCaption.AutoSize = true;
            this.lblPurchasePriceCaption.Location = new System.Drawing.Point(11, 15);
            this.lblPurchasePriceCaption.Name = "lblPurchasePriceCaption";
            this.lblPurchasePriceCaption.Size = new System.Drawing.Size(108, 13);
            this.lblPurchasePriceCaption.TabIndex = 0;
            this.lblPurchasePriceCaption.Text = "Enter purchase price:";
            //
            // lblStateTaxCaption
            //
            this.lblStateTaxCaption.AutoSize = true;
            this.lblStateTaxCaption.Location = new System.Drawing.Point(40, 48);
            this.lblStateTaxCaption.Name = "lblStateTaxCaption";
            this.lblStateTaxCaption.Size = new System.Drawing.Size(79, 13);
            this.lblStateTaxCaption.TabIndex = 1;
            this.lblStateTaxCaption.Text = "State sales tax:";
            //
            // lblCountyTaxCaption
            //
            this.lblCountyTaxCaption.AutoSize = true;
            this.lblCountyTaxCaption.Location = new System.Drawing.Point(32, 76);
            this.lblCountyTaxCaption.Name = "lblCountyTaxCaption";
            this.lblCountyTaxCaption.Size = new System.Drawing.Size(87, 13);
            this.lblCountyTaxCaption.TabIndex = 2;
            this.lblCountyTaxCaption.Text = "County sales tax:";
            //
            // lblTotalTaxCaption
            //
            this.lblTotalTaxCaption.AutoSize = true;
            this.lblTotalTaxCaption.Location = new System.Drawing.Point(41, 104);
            this.lblTotalTaxCaption.Name = "lblTotalTaxCaption";
            this.lblTotalTaxCaption.Size = new System.Drawing.Size(78, 13);
            this.lblTotalTaxCaption.TabIndex = 3;
            this.lblTotalTaxCaption.Text = "Total sales tax:";
            //
            // lblTotalPriceCaption
            //
            this.lblTotalPriceCaption.AutoSize = true;
            this.lblTotalPriceCaption.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
            this.lblTotalPriceCaption.Location = new System.Drawing.Point(47, 132);
            this.lblTotalPriceCaption.Name = "lblTotalPriceCaption";
            this.lblTotalPriceCaption.Size = new System.Drawing.Size(72, 13);
            this.lblTotalPriceCaption.TabIndex = 4;
            this.lblTotalPriceCaption.Text = "Total price:";
            //
            // txtPurchasePrice
            //
            this.txtPurchasePrice.Location = new System.Drawing.Point(125, 12);
            this.txtPurchasePrice.Name = "txtPurchasePrice";
            this.txtPurchasePrice.Size = new System.Drawing.Size(120, 20);
            this.txtPurchasePrice.TabIndex = 0;
            this.txtPurchasePrice.TextAlign = System.Windows.Forms.HorizontalAlignment.Center;
            //
            // lblStateTax
            //
            this.lblStateTax.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
            this.lblStateTax.Location = new System.Drawing.Point(125, 43);
            this.lblStateTax.Name = "lblStateTax";
            this.lblStateTax.Size = new System.Drawing.Size(120, 23);
            this.lblStateTax.TabIndex = 1;
            this.lblStateTax.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
            //
            // lblCountyTax
            //
            this.lblCountyTax.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
            this.lblCountyTax.Location = new System.Drawing.Point(125, 71);
            this.lblCountyTax.Name = "lblCountyTax";
            this.lblCountyTax.Size = new System.Drawing.Size(120, 23);
            this.lblCountyTax.TabIndex = 2;
            this.lblCountyTax.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
            //
            // lblTotalTax
            //
            this.lblTotalTax.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
            this.lblTotalTax.Location = new System.Drawing.Point(125, 99);
            this.lblTotalTax.Name = "lblTotalTax";
            this.lblTotalTax.Size = new System.Drawing.Size(120, 23);
            this.lblTotalTax.TabIndex = 3;
            this.lblTotalTax.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
            //
            // lblTotalPrice
            //
            this.lblTotalPrice.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
            this.lblTotalPrice.Location = new System.Drawing.Point(125, 127);
            this.lblTotalPrice.Name = "lblTotalPrice";
            this.lblTotalPrice.Size = new System.Drawing.Size(120, 23);
            this.lblTotalPrice.TabIndex = 4;
            this.lblTotalPrice.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
            //
            // btnCalculate
            //
            this.btnCalculate.Location = new System.Drawing.Point(23, 163);
            this.btnCalculate.Name = "btnCalculate";
            this.btnCalculate.Size = new System.Drawing.Size(75, 24);
            this.btnCalculate.TabIndex = 5;
            this.btnCalculate.Text = "Calculate";
            this.btnCalculate.UseVisualStyleBackColor = true;
            this.btnCalculate.Click += new System.EventHandler(this.btnCalculate_Click);
            //
            // btnClear
            //
            this.btnClear.Location = new System.Drawing.Point(104, 163);
            this.btnClear.Name = "btnClear";
            this.btnClear.Size = new System.Drawing.Size(75, 24);
            this.btnClear.TabIndex = 6;
            this.btnClear.Text = "Clear";
            this.btnClear.UseVisualStyleBackColor = true;
            this.btnClear.Click += new System.EventHandler(this.btnClear_Click);
            //
            // btnExit
            //
            this.btnExit.DialogResult = System.Windows.Forms.DialogResult.Cancel;
            this.btnExit.Location = new System.Drawing.Point(185, 163);
            this.btnExit.Name = "btnExit";
            this.btnExit.Size = new System.Drawing.Size(75, 24);
            this.btnExit.TabIndex = 7;
            this.btnExit.Text = "Exit";
            this.btnExit.UseVisualStyleBackColor = true;
            this.btnExit.Click += new System.EventHandler(this.btnExit_Click);
            //
            // Form1
            //
            this.AcceptButton = this.btnCalculate;
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.CancelButton = this.btnExit;
            this.ClientSize = new System.Drawing.Size(284, 200);
            this.Controls.Add(this.btnExit);
            this.Controls.Add(this.btnClear);
            this.Controls.Add(this.btnCalculate);
            this.Controls.Add(this.lblTotalPrice);
            this.Controls.Add(this.lblTotalTax);
            this.Controls.Add(this.lblCountyTax);
            this.Controls.Add(this.lblStateTax);
            this.Controls.Add(this.txtPurchasePrice);
            this.Controls.Add(this.lblTotalPriceCaption);
            this.Controls.Add(this.lblTotalTaxCaption);
            this.Controls.Add(this.lblCountyTaxCaption);
            this.Controls.Add(this.lblStateTaxCaption);
            this.Controls.Add(this.lblPurchasePriceCaption);
            this.Name = "Form1";
            this.Text = "Sales Tax and Total";
            this.ResumeLayout(false);
            this.PerformLayout();

        }

        #endregion

        private System.Windows.Forms.Label lblPurchasePriceCaption;
        private System.Windows.Forms.Label lblStateTaxCaption;
        private System.Windows.Forms.Label lblCountyTaxCaption;
        private System.Windows.Forms.Label lblTotalTaxCaption;
        private System.Windows.Forms.Label lblTotalPriceCaption;
        private System.Windows.Forms.TextBox txtPurchasePrice;
        private System.Windows.Forms.Label lblStateTax;
        private System.Windows.Forms.Label lblCountyTax;
        private System.Windows.Forms.Label lblTotalTax;
        private System.Windows.Forms.Label lblTotalPrice;
        private System.Windows.Forms.Button btnCalculate;
        private System.Windows.Forms.Button btnClear;
        private System.Windows.Forms.Button btnExit;
    }
}