Question

Use Visual Basic language(only basic no, C# or others).

Use of Try-Catch Blocks

In retail sales, management needs to know the average inventory figure and the turnover of merchandise. Create a project that allows the user to enter the beginning inventory, the ending inventory and the cost of goods sold.

Form: Include labeled text boxes for the beginning inventory, the ending inventory, and the cost of goods sold. After calculating the answers. Display the average inventory and the turnover formatted in text boxes.

Include buttons for Calculate, Clear, and Exit. The formulas for the calculations are:

        Average Inventory = (Beginning Inventory + Ending Inventory)/2

      Turnover = Cost of Goods Sold/ Average Inventory

Note: The average inventory is expressed in dollars.: The turnover is the number times the inventory turns over: Format in Decimal to one decimal point

Include procedures for the click event of each button, Display the results in textboxes. Format the average inventory as currency and the turnover as a number with one digit to the right of the decimal. Make sure to catch any bad input and display a message to the user.    Test data should be negative numbers and/or characters

Use the following data to test the calculations for your project.

Test Data

Beginning	Ending	Cost of Goods Sold	Average Inventory	Turnover
58500	47000	400000	$52,750.00	7.6
75300	13600	515400	44,450.00	11.6
3000	19600	48000	11,300.00	4.2

Answer 1

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 HomeworkLib_4_2
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

private void calc_Click(object sender, EventArgs e)
{
int a;
if (int.TryParse(b_inv.Text, out a) && int.TryParse(e_inv.Text, out a) && int.TryParse(cost.Text, out a))
{
if (Convert.ToInt32(b_inv.Text) <= 0 || Convert.ToInt32(e_inv.Text) <= 0 || Convert.ToInt32(cost.Text) <= 0)
{
MessageBox.Show("Enter Beganing and end inventory greater then zero");
}
else
{
double avg =( Convert.ToDouble(b_inv.Text) + Convert.ToDouble(e_inv.Text)) / 2;
avg_inv.Text = "$" + Convert.ToString(avg);
double turnover_ = Convert.ToDouble(cost.Text) / avg;
  
float roundedTurnover = (float)(Math.Round((double)turnover_, 1));
turnover.Text = Convert.ToString(roundedTurnover);
}
}
else
{
MessageBox.Show("Enter Numeric data only");
}
}

private void exit_Click(object sender, EventArgs e)
{
this.Close();
}

private void clear_Click(object sender, EventArgs e)
{
b_inv.Text = e_inv.Text = avg_inv.Text = turnover.Text = cost.Text = "";
}
}
}