BIS 311 DeVry All Week iLab

BIS 311 DeVry All Week I Lab 

Downloading is very simple, you can download this Course here: 

http://mindsblow.us/question_des/BIS311DeVryAllWeekiLab/4378 

Or 

Contact us at: 

help@mindblows.us 

BIS 311 DeVry All Week I Lab 

BIS311 

BIS 311 DeVry Week 1 I Lab 

I LAB OVERVIEW 

Scenario/Summary 

In this iLab, you will create a Visual Basic application that meets the following business requirements. 

Name Combiner Business Requirements 

The application will allow the user to input a person's first name and last name. When the user clicks the Display Name 

button, the application will combine the first name, a space, and the last name into the person's full name, and then 

display the full name to the user. 

The tasks, objects, events (TOE) chart for this application will be as follows. 

Task Object Event 

Get the following inputs from the user: 

First name 

Last name 

txtFirstName 

txtLastName 

Perform the following processing: 

Form full name by combining first name, a space, and last name btnDisplay Click 

Display the following output to the user: 

Full name 

lblFullName 

Deliverables 

Submit a single Word document named Lab1YourFirstLastName.docx (where YourFirstLastName = your first and last 

name; e.g., JohnSmith) containing the following. 

Screenshot of Windows form showing successful operation of the application 

Copy of the application's button-click event code 

Category Points % Description

Create form, rename it, and set its 

7 14% 

text property 

Add label and text box for first 

name, setting name, and text 7 14% 

properties for each 

Add label and text box for last 

name, setting name, and text 7 14% 

properties for each 

The form is named NameCombiner.vb and has text property set 

to Lab1 - Your Name where Your Name = your full name (e.g., 

John Smith). 

The label text property is set to First name:. Text box is named 

txtFirstName and has text property set to nothing. 

The label text property is set to Last name:. The text box is 

named txtLastName and has text property set to nothing. 

Add labels for full name, setting 

name, and text properties for each 7 14% The first label text property is set to Full name:. The second label 

is named lblFullName and has text property set to ----------. 

Add command button and set its 

7 14% 

name and text properties 

Code button-click event 7 14% 

Program tested and runs as 

8 16% 

required 

The command button is named btnDisplay and has text property 

set to Display Name. 

The code in the button-click event declares two String variables 

for first, last, and full names; gets the values entered in the text 

boxes by the user into the corresponding variables; concatenates 

the first name, a space, and the last name, storing the result in 

the full name variable; and displays the full name in the 

appropriate label. 

A screenshot displays the form after the user has entered a first 

name and a last name and clicked the Display Name button. The 

corresponding first name, space, and last name are displayed in 

the output label. 

Total 50 100% 

Required Software 

Visual Studio 2012 

Access the software at.devry.edu">https://lab.devry.edu. 

Steps: all 

iLAB STEPS 

STEP 1: Launch and Configure Microsoft Visual Studio 2012 

.equella.ecollege.com/file/8fe38950-b7ec-4492-8803-a1c7312a7eb1/67/BIS311_W1_iLab.html#top">Back to Top 

(a) On the Citrix iLab main screen, if the Visual Studio 2012 icon is not already displayed, click the plus sign (+) on the 

left side of the screen. Next, click on All Apps and scroll down to find Microsoft Visual Studio 2012. Click on it to add it 

to your Citrix iLab menu screen. 

(b) On the Citrix iLab main menu screen, click the Microsoft Visual Studio 2012 icon to launch the applicatio 

STEP 2: Create the Project 


(a) Pull down the File menu and select New Project. 

(b) In the New Project dialog box, ensure that the Visual Basic and Windows Form Application choices are selected. 

Change the name in the Name box at the bottom of the dialog box to NameCombiner. Click OK. 

(c) A blank form for your application should now be displayed as shown below. 

STEP 3: Set Up Main Form 

.equella.ecollege.com/file/8fe38950-b7ec-4492-8803-a1c7312a7eb1/67/BIS311_W1_iLab.html#top">Back to Top

(a) Under Solution Explorer on the right side, right-click on Form1.vb and select Rename. Change the name to 

NameCombiner.vb and press Enter. The result should look like the following. 

(b) If the Properties window is not already displayed below the Solution Explorer window at the bottom right of the 

screen, click the Wrench icon on the Solution Explorer toolbar to display it. 

(c) Click the blank form in the NameCombiner.vb [Design] tab on the left side of the screen to select it. The form's 

properties should now be displayed in the Properties window at the bottom right. Scroll through the list to find the Text 

property row. Change the property for the text from Form1 to Lab1 - Your Name where Your Name = your first and last 

names (e.g., John Smith). 

STEP 4: Add Form Controls 


(a) If the Toolbox pane is not opened on the left side of the screen, click the Toolbox tab at the center left edge of the 

screen to open it. Click the Pushpin symbol at the right side of the Toolbox title bar to pin the Toolbox in the open 

position. 

(b) Click the Common Controls heading in the Toolbox to expand it. Under Common Controls, select the Label control 

and drag it onto the form, positioning it in the upper left area. In the Properties window, select the Text property of the 

label and change it to First name:. Press Enter and you should see the new text appear in the label. 

(c) Drag a TextBox control from the Common Controls area of the Toolbox and position it directly underneath the First 

name: label. Note: You may have to scroll down in the list of controls to find the TextBox control. Next, in the Properties 

window, change the (Name) property to txtFirstName. Ensure that the Text property is empty (blank). 

(d) Drag another Label control from the Toolbox and position it in the upper right area of the form. Change its Text 

property to Last name:. 

(e) Drag another TextBox control from the Toolbox and position it directly underneath the Last name: label. Change its 

(Name) property to txtLastName and ensure that its Text property is empty (blank). 

(f) Drag another Label control from the Toolbox and position it in the center of the form below the text boxes. Change 

its Text property to Full name:. 

(g) Drag another Label control from the Toolbox and position it directly underneath the Full name: label. Change its 

(Name) property to lblFullName and its Text property to ---------- (10 dashes). 

(h) Drag a Button control from the Toolbox and position it in the center of the form near the bottom. Change its (Name) 

property to btnDisplay and its Text property to Display Name. If necessary, click and drag the sizing handles (small 

circles) at the edges of the button to make it larger so that the complete text can be seen in the button. 

(i) Verify that your form looks similar to the following, and make any necessary adjustments to the positions and 

properties of the controls. 

STEP 5: Code Button-Click Event 


(a) Double-click the Display Name button on the form. This will open the code editor with a stub or template for the 

button-click event handler procedure already generated for you by Visual Studio. 

(b) Starting where the cursor is positioned, in between the line beginning Private Sub btnDisplay_Click( . . . and the line 

End Sub, enter the following code. 

Code for Button-Click Event 

'Display full name 

Dim strFirstName As String 

Dim strLastName As String 

Dim strFullName As String 

strFirstName = txtFirstName.Text 

strLastName = txtLastName.Text

strFullName = strFirstName + " " + strLastName 

lblFullName.Text = strFullName 

After you have entered your code, the code editor window should look as follows. 

(c) Pull down the File menu and select Save All to save your changes to the project. If a Save Project dialog appears, 

ensure that the project is being saved to the My DocumentsVisual Studio 2012Projects folder under your DSI number. 

Click Save. 

STEP 6: Test, Debug, and Submit 


(a) Run the application by doing one of the following: click the Start button (green, right-pointing, triangle icon) on the 

toolbar; pull down the Debug menu and select Start Debugging; or press the F5 key. 

(b) Your form should appear. Enter your first name in the First name text box and your last name in the Last name text 

box. Then click the Display Name button. Your first and last name should appear under Full name with a space between 

them, as shown below. 

(c) If you received an error message or your application did not work correctly, don't despair; debugging is a natural 

part of the programming process. Review your code and the naming of your controls carefully, and find and correct the 

errors. Then try running the application again. If you get stuck, you can post in the Q & A Forum or contact your 

professor for assistance. 

(d) When your application runs and works correctly, capture a screenshot of the form with your first and last name 

entries and correct full name displayed. Note: To capture a screenshot of the current window, press the Ctrl, Alt, and 

PrintScreen keys simultaneously; this will copy an image of the current window into your copy-and-paste buffer. Next, 

open a Word document and paste your image into the document. Close the application form by clicking the X in the 

upper right corner. Now select and copy your Visual Basic code for the button-click event in the code editor, and paste 

this into the Word document as well. Save the Word document as Lab1YourFirstLastName.docx (where 

YourFirstLastName = your first and last name, e.g., JohnSmith) and submit it to the appropriate Dropbox. 

BIS 311 DeVry Week 2 iLab 

iLAB OVERVIEW 


In this iLab assignment, you will create a Visual Basic application that implements a loan payment calculator, based on 

the business requirements, TOE chart, and pseudocode shown below. 

Payment Calculator Business Requirements 

The application will accept as inputs a loan amount, an annual interest rate, and the number of years for the loan. The 

application will calculate the monthly payment amount for the loan. As output, the application will display to the user 

the monthly payment amount formatted as currency with a dollar sign and cents. 

Payment Calculator TOE Chart 


Get the following inputs from the user. 

Loan amount 

Annual interest rate 

Number of years 

txtLoanAmount 

txtAnnualRate 

txtYears 

Perform the following processing. 

Calculate the monthly payment using the Pmt function btnCalcPayment Click

Display the following output to the user. 

Monthly payment formatted as currency with $ and cents 

lblMonthlyPayment 

Pseudocode for Payment Calculator Application 

Start 

Declare numeric variables for 

Loan amount 

Annual rate 

Years of loan 

Monthly payment 

Get inputs: 

Loan amount 

Annual rate 

Years of loan 

Calculate Monthly payment =-PMT(Annual rate /12,Years of loan *12,Loan amount) 

Display Monthly payment formatted as currency with $ and cents 

Stop 

Deliverables 

Submit a Word document named Lab2YourFirstLastName.docx(where YourFirstLastName = your first and last name; 

e.g., Lab2JohnSmith.docx) containing the following. 

Screenshot of the form showing the application running, with correct input and output values displayed in the form 

Copy of button-click event code 

Category Points % Description 

Create and rename form 10 20% 

Add controls to form 10 20% 

Set properties (name and 

10 20% 

text) for controls 


A Windows form was created and named PaymentCalculator.vb. The 

form text property was set to Lab 2 Your Name (where Your Name = 

your full name). 

The following controls were added to the form: identifying labels and 

text boxes for entry of loan amount, annual rate, and years of loan; 

Calculate Payment button; and label for display of payment amount. 

Controls are arranged on the form in a logical and visually pleasing 

layout. 

Name and text properties of all controls were set appropriately, with no 

typos or spelling errors. 

Button-click event code was entered that corresponds to the given 

pseudocode, with no syntax errors. 

Test-run 

successfully 

application 

10 20% 

The application is shown running successfully with no errors, with valid 

inputs and correct output displayed in the form. 

Total 50 100% 

Required Software

Microsoft Visual Studio 2012 

Access the software at.devry.edu">https://lab.devry.edu. 

iLAB STEPS 

STEP 1: Launch Visual Studio 

.equella.ecollege.com/file/bfe9e5e5-c91c-450f-a8b4-b45a9d02faa3/40/BIS311_W2_iLab.html#top">Back to Top 

Log in to the Citrix iLab site as you did in the previous week's iLab. The Microsoft Visual Studio 2012 icon should 

already be displayed on your Citrix main menu page. Click the Microsoft Visual Studio 2012 icon to launch Visual 

Studio. 

You should see a screen similar to the following. 

STEP 2: Create Project 


(a) Pull down the File menu and select New Project . . . . 

(b) In the New Project dialog, ensure that in the left column, under Templates, Visual Basic is selected; and that in the 

center column, Windows Form Application is selected. In the Name field at the bottom of the dialog, enter 

PaymentCalculator. Click OK. 

(c) A project with a blank form should be displayed, as shown below. 

STEP 3: Rename Form 


(a) In the Solution Explorer pane on the right side of the screen, right-click on Form1.vb, select Rename, and change 

the name to PaymentCalculator.vb. Press Enter after entering the new form name. 

(b) Click on the form in the center Design pane to select it. In the Properties pane at the bottom right of the screen, 

change the Text property of the form to Lab 2 Your Name where Your Name = your full name. Remember, you may 

need to scroll in the Properties pane to find the Text property. 

STEP 4: Add Controls to Form 


(a) Check that the Toolbox is displayed at the left side of the screen. If it is not, click the Toolbox tab at the center left 

edge of the screen to expand the Toolbox, and click the pushpin symbol at the right side of the Toolbox title bar to pin 

it open. 

(b) If necessary, click the Common Controls heading in the Toolbox to expand it. Drag four Label controls, three TextBox 

controls, and one Button control from the Common Controls area of the Toolbox onto the form, and arrange them on 

the form as shown below. 

(c) If you received an error message, or if your application did not work correctly, apply the methods for finding and 

fixing programming errors described in the reading assignment to debug your application. Post in the Q & A Forum or 

contact your professor for assistance if needed. 

(d) When your application runs and works correctly, capture a screenshot of the form showing the input and output 

values given above. Remember, use Ctrl+Alt+PrintScreen to capture a screenshot. Paste your screenshot image into 

a Word document. Select and copy your code for the button-click event and also paste this into the Word document. 

Save the Word document as Lab2YourFirstLastName.docx (where YourFirstLastName = your first and last name; e.g., 

JohnSmith) and submit it to the appropriate Dropbox 


iLAB OVERVIEW 

Scenario/Summary

In this lab, you will implement a tax calculator application that meets the following business requirements: 

Tax Calculator Business Requirements 

The application will accept as inputs the individual's income and number of dependents. The application will calculate 

the individual's total deductions as a standard deduction of $6,000 plus a deduction of $1,000 per dependent. The 

application will calculate the individual's adjusted gross income as the income minus the total deductions. The 

application will then calculate the tax owed using the following tax table. 

Adjusted Gross Income 

Tax 

Less than or equal to $10,000 Adjusted gross income × 10% 

Greater than $10,000 and less than or equal to $40,000 

Greater than $40,000 and less than or equal to $100,000 

Greater than $100,000 

$1,000 + (Adjusted gross income - 

$10,000) × 15% 


$40,000) × 25% 


$100,000) × 35% 

As output, the application will display to the user the tax owed, formatted as currency with a dollar sign and cents. 

Tax Calculator TOE Chart: 



Check amount 

Number of dependents 

txtIncome 

txtDependents 

Perform the following processing: btnCalcTax Click 

Calculate total deductions = 6000 + Number of dependents × 1000 

Calculate adjusted gross income = Income - Total deductions 

Calculate tax owed using tax table in requirements 

Display the following output to the user: 

Tax owed formatted as currency with $ and cents 

lblTaxOwed 

Pseudocode for Tax Calculator Application 

Start 

Declare numeric constants for 

Standard deduction =6000 

Dependent deduction =1000 

Income bracket 1=10000 

Rate1=0.10 


Base2=1000 

Rate2=0.15


Base3=5500 

Rate3=0.25 

Base4=20500 

Rate4=0.35 


Income 


Total deductions 

Adjusted gross income 

Tax owed 

Get inputs: 

Income 


Calculate Total deductions =Standard deduction +(Number of dependents *Dependent deduction) 

Calculate Adjusted gross income =Income-Total deductions 

If Adjusted gross income is less than or equal to Income bracket 1 Then 

CalculateTax owed =Adjusted gross income * Rate 1 

Else If Adjusted gross income is less than or equal to Income bracket 2 

Calculate Tax owed =Base 2 + (Adjusted gross income - Income bracket 1) * Rate 2 

Else If Adjusted gross income is less than or equal to Income bracket 3 

Calculate Tax owed =Base3 + (Adjusted gross income - Income bracket 2) * Rate 3 

Else 

Calculate Tax owed = Base 4 + (Adjusted gross income -Income bracket 3) * Rate 4 

End If 

Display Tax owed formatted as currency with $ and cents 

Stop 

NOTE: The above is a simplified version of tax calculations for purposes of this lab. Although the basic principles of a 

graduated income tax are illustrated here, real taxes are more complicated, and the rates and brackets are different. 

Please do not use this simple application to calculate your real taxes. 

Deliverables 

Submit a Word document named Lab3YourFirstLastName.docx (where YourFirstLastName = your first and last name; 

e.g., Lab3JohnSmith.docx) containing the following: 

Screenshots of form showing the application running, with the following correct input and output values displayed in 

the form. 

Income = 9,000, Number of dependents = 1, Tax owed = $200.00 

Income = 25,000, Number of dependents = 2, Tax owed = $2,050.00 

Income = 70,000, Number of dependents = 3, Tax owed = $10,750.00

Income = 150,000, Number of dependents = 4, Tax owed = $34,500.00 





Set properties (name and text) 

5 10% 

for controls 


Windows form was created and renamed TaxCalculator.vb. Form 

text property was set to Lab 3 Your Name (where Your Name = 

your full name). 

The following controls were added to the form: Identifying labels 

and text boxes for entry of income and number of dependents; 

Calculate Tax button; and label for display of tax owed. Controls 

are arranged on form in a logical and visually pleasing layout. 

Name and text properties of all controls were set appropriately, 

with no typos or spelling errors. 

Button-click event code was entered that corresponds to the given 


Test-run 

successfully 

application 

20 40% 

Application is shown running successfully with no errors, with valid 

inputs and correct output for each of the four specified test cases. 

Total 50 100% 


Log in to the Citrix iLab site as you did in the previous labs. The Microsoft Visual Studio 2012 icon should be displayed 

already on your Citrix main menu page. Click the Microsoft Visual Studio 2012 icon to launch Visual Studio. 

(a) Pull down the File menu and select New Project . . . . 

(b) In the New Project dialog, ensure that in the left column, under Templates, Visual Basic is selected; and that in the 

center column Windows Form Application is selected. In the Name field at the bottom of the dialog, enter TaxCalculator. 

Click OK. ( 

(a) Drag the following controls from the ToolBox onto the form, arrange them in a logical fashion, and set their properties 

as indicated in the table below. 

Control Name Property Text Property 

Label Label1 Income: 

TextBox 

txtIncome 

Label Label2 Number of dependents: 

TextBox 

txtDependents 

Button btnCalcTax Calculate Tax Owed 

Label lblTaxOwed Your tax owed will display here 

(b) Ensure that all controls are positioned and sized so that the form has a neat, professional appearance and none of 

the text is cut off. Your completed form should look similar to the following. 

(c) Your form should appear. Test your application using the following test cases. For each test case, enter the indicated 

values for Income and Number of dependents; click the Calculate Tax button; and check that the amount displayed for 

the tax owed is correct. Capture a screenshot showing the results of each correct test case and paste into a Word 

document. Remember, use CTRL+ALT+PrintScreen to capture a screenshot. 

Test case # Income Number of dependents Tax owed

1 9,000 1 $200.00 

2 25,000 2 $2,050.00 

3 70,000 3 $10,750.00 

4 150,000 4 $34,500.00 

For example, the screenshot for test case #1 should look as follows: 

(c) If you receive an error message or your application did not work correctly, debug the application and try again. Post 

in the Q & A Forum or contact your professor for assistance if needed. 

(d) When your application works correctly for all the test cases, select and copy the code for the button-click event and 

paste it into your Word document below the four test case screenshots. Save the Word document containing the four 

test case screenshots and your button-click event code asLab3YourFirstLastName.docx (where YourFirstLastName = 

your first an 


iLAB OVERVIEW 


In this lab, you will implement a grade calculator application that meets the following business requirements: 

Grade Calculator Business Requirements 

The user types the number of grades he or she wishes to enter in a text box. When the user clicks a button, the 

application enters a loop that accepts the specified number of grades and totals them up. The application then displays 

the entered grades and their average, formatted to two decimal places. 

Grade Calculator TOE Chart 



Number of grades to enter 

Each grade 

txtNumGrades 

Input box 

Perform the following processing: btnCalcAvgGrade Click 

Add up the total of all grades 

Divide the total by the number of grades to calculate the average 

Display the following outputs: 

Each grade 

Average grade formatted with two decimal places 

txtGrades 

lblAverage 

Pseudocode for Grade Calculator Application 

Start 

Declare numeric constant for Maximum number of grades =100 

Declare numeric variables for: 

Number of grades

Grade 

Total of grades (initialize to 0) 

Average grade 

Declare numeric array GradeArray able to hold the Maximum number of grades 

Get the Number of grades 

Repeat for each grade up to Number of grades 

Get the Grade 

Store the Grade in the GradeArray array 

Add the Grade to the Total of grades 

End Repeat 

Calculate Average grade =Total of grades/Number of grades 

Repeat for each GradeArray element up to Number of grades 

Display the GradeArray element 

End Repeat 

Display the Average grade formatted with two decimal places 

Stop 

Deliverables 

Submit a Word document named Lab4YourFirstLastName.docx (where YourFirstLastName = your first and last name; 

e.g., Lab4JohnSmith.docx) containing the following: 

 

 

Screenshot of form showing the application running, with 10 grades entered and displayed along with the 

correct average. 


Category 

Step 2: Rename Form and Add Controls 

.equella.ecollege.com/file/9c975e7b-3ccf-4cf6-9005-6cf86e077540/34/BIS311_W4_iLab.html#top">Back to Top 


the name to GradeCalculator.vb. Press Enter after entering the new form name. 

(b) Change the Text property of the form to Lab 4 Your Name (where Your Name = your full name), as you have done 

in previous labs. 

(c) Drag the following controls from the ToolBox onto the form, arrange them in logical fashion, and set their properties 

as indicated in the table below: 

Control Name Property Text Property 

Multiline 

Property 

ScrollBars 

Property 

ReadOnly 

Label Label1 Enter number of grades: 

TextBox 

Button 

txtNumGrades 

btnCalcAvgGrade 

Get Grades and Calculate 

Average 

Label Label2 Grades entered:

TextBox txtGrades True Vertical True 

Label lblAverage Average will display here 

(d) Ensure that all controls are positioned and sized so that the form has a neat, professional appearance and none of 

the text is cut off. Your completed form should look similar to the following. 

Step 3: Code Button-Click Event 

.equella.ecollege.com/file/9c975e7b-3ccf-4cf6-9005-6cf86e077540/34/BIS311_W4_iLab.html#top">Back to Top 

(a) Double-click the button on the form to open the code editor with a template for the button-click event procedure. 

(b) Starting where the cursor is positioned, in between the line beginning Private Sub btnCalcAvgGrade_Click( . . . and 

the line End Sub, enter the following code. 

Code for Button-Click Event 

'Get grades and calculate average 

'Declare constants and variables 

Const intMAX_NUM_GRADES As Integer = 100 

Dim intNumGrades As Integer 

Dim intGrade As Integer 

Dim intTotal As Integer = 0 

Dim dblAverage As Double 

Dim intGradeArray(intMAX_NUM_GRADES - 1) As Integer 

'Get the number of grades 

Integer.TryParse(txtNumGrades.Text, intNumGrades) 

'Loop to accept grades and add up total 

For intGradeNumber As Integer = 1 To intNumGrades 

Integer.TryParse(InputBox("Enter grade #" & intGradeNumber), intGrade) 

intGradeArray(intGradeNumber - 1) = intGrade 

intTotal += intGrade 

Next intGradeNumber 

'Calculate average grade 

dblAverage = intTotal / intNumGrades 

'Loop to display each grade entered 

For intGradeNumber As Integer = 1 To intNumGrades 

txtGrades.Text += "Grade #" & intGradeNumber & " = " & intGradeArray(intGradeNumber - 1) & vbCrLf 

Next intGradeNumber 

'Display average 

lblAverage.Text = "The average grade is " & Format(dblAverage, "Standard") 

The code editor window should look like the following after you have entered your code. 

Step 4: Test, Debug, and Submit 

.equella.ecollege.com/file/9c975e7b-3ccf-4cf6-9005-6cf86e077540/34/BIS311_W4_iLab.html#top">Back to Top

(a) Run the application by doing one of the following: click the Start button; pull down the Debug menu and select Start 

Debugging; or press the F5 key. 

(b) Your form should appear. Test your application by entering the value 10 as the number of grades and clicking the 

Start button. An input box should appear, prompting you to enter a grade. Enter the first grade from the list of test data 

below and click the OK button in the input box. Continue entering the test grades, clicking OK after each one, until all 

grades have been entered. 

Grade # 

Grade 

1 60 

2 93 

3 89 

4 61 

5 60 

6 70 

7 85 

8 76 

9 76 

10 92 

During the grade entry process, your screen should look like the following. 

(c) After you enter the last grade, the application should display all the grades and the average. Your screen should 

look as follows: 

(d) If you receive an error message or your application does not work correctly, debug the application and try again. 

Post in the Q & A Forum or contact your professor for assistance if needed. 

(e) When your application works correctly, capture a screenshot of the form showing the 10 grades entered and the 

average, and paste it into a Word document. Remember, use CTRL+ALT+PrintScreen to capture a screenshot. Also 

select and copy your button-click event code and paste it into the Word document. Save the Word document 

asLab4YourFirstLastName.docx (where YourFirstLastName = your first and last name; e.g., JohnSmith) and submit it 

to the appropriate dropbox. 


iLAB OVERVIEW 


In this lab, you'll implement an application that performs a simple sales tax calculation. The new feature of this 

application, compared to what you have done in previous iLabs, is that the values entered by the user will be checked 

for validity. If the amounts entered are invalid, the application will display appropriate error messages to the user. If the 

input data are valid, the application will calculate the sales tax due and the total, including tax. 

Sales Tax Application Business Requirements 

The user enters an order amount and a sales tax percent. The order amount must be numeric and greater than 0. The 

sales tax percent must be numeric, greater than or equal to 0, and less than or equal to 0.14. If the input data are 

invalid, appropriate error messages will be displayed to the user. If the input data are valid, the application will calculate 

the sales tax by multiplying the order amount by the sales tax percent, and will calculate the order total, including tax, 

by adding the order amount and the sales tax. The sales tax and the order total, including tax, will be displayed to the 

user.

TOE Chart for Sales Tax Application 



Order amount 

Sales tax percent 

txtOrderAmount 

txtTaxPercent 

Perform the following processing: btnCalcTotal Click 

Validate inputs 

Calculate Tax = Order amount * Sales tax percent 

Calculate Order total = Order amount + Tax 

Display the following outputs: 

Error messages (if input invalid) 

Tax (if input valid) 

Order total (if input valid) 

lstMessages 

lstMessages 

lstMessages 

Pseudocode for Sales Tax Application 

Start button-click event handler 


Order amount 

Sales tax percent 

Tax 

Order total 

Declare string variables for 

Order amount message 

Sales tax percent message 

Declare Boolean variable for 

Inputs valid (initialize to True) 

Clear messages 

Call ValidateOrderAmount function with Order amount, returning Order amount message 

If Order amount message is not empty (i.e. there was an error) 

Display Order amount message 

Set Inputs valid to False 

End If 

Call ValidateSalesTaxPercent function with Sales tax percent, returning Sales tax percent message 

If Sales tax percent message is not empty (i.e. there was an error) 

Display Sales tax percent message 

Set Inputs valid to False

End If 

If Inputs valid is True 

Get Order amount 

Get Sales tax percent 

Calculate Tax = Order amount * Sales tax percent 

Calculate Order total = Order amount + Tax 

Display Tax 

Display Order amount 

End If 

Stop button-click event handler 

Start ValidateOrderAmount function (Order amount) 

If Order amount is not numeric 

Set Order amount message to "Please enter a numeric order amount." 

Else If Order amount is less than or equal to zero 

Set Order amount message to "Please enter an order amount greater than zero." 

Else 

Set Order amount message to the empty string (no error) 

End If 

Return Order amount message 

Stop ValidateOrderAmount 

Start ValidateSalesTaxPercent (Sales tax percent) 

If Sales tax percent is not numeric 

Set Sales tax percent message to "Please enter a numeric sales tax percent." 

Else If Sales tax percent is less than zero or greater than 0.14 

Set Sales tax percent message to "Please enter a sales tax percent between 0.00 and 0.14." 

Else 

Set Sales tax percent message to the empty string(no error) 

End If 

Return Sales tax percent message 

Stop ValidateSalesTaxPercent 

Deliverables 

 

 

 

Submit a Word document named Lab5YourFirstLastName.docx (where YourFirstLastName = your first and 

last name; e.g., Lab5JohnSmith.docx) containing the following: 

Screenshot of form showing the application running, with non-numeric entries for Order amount and Sales tax 

percent, and appropriate error messages displayed. 

Screenshot of form showing the application running, with out-of-range entries for Order amount and Sales tax 

percent, and appropriate error messages displayed.

Screenshot of form showing the application running, with valid entries for Order amount and Sales tax percent, 

and correct Tax and Order total results displayed. 

Copy of code for button-click event, ValidateOrderAmount function, and ValidateSalesTaxPercent function. 




Set properties for controls 5 10% 


Windows form was created and renamed SalesTax.vb. Form text 

property was set toLab 5 Your Name (where Your Name = your 

full name). 

The following controls were added to the form: Identifying labels 

and text boxes for entry of order amount and sales tax percent; 

button to calculate total including tax; and list box for display of 

error messages and results. 

Name and text properties of all controls were set appropriately, 

with no typos or spelling errors. 

Button-click event code was entered that corresponds to the 

given pseudocode, with no syntax errors. 

Code 

function 

ValidateOrderAmount 

5 10% 

Function code was entered that corresponds to the given 


Code ValidateSalesTaxPercent 

5 10% 

function 

Function code was entered that corresponds to the given 


Application is shown running successfully with screen shots for 

each of the three test cases: 

Test-run application successfully 20 40% 

(1) non-numeric entries for order amount and sales tax percent, 

with appropriate error messages; 

(2) out-of-range entries for order amount and sales tax percent, 

with appropriate error messages; and 

(3) valid entries for order amount and sales tax percent, with 

correct tax and order total results. 

Total 50 100% 


Visual Studio 2012 

Access the software at.devry.edu/">https://lab.devry.edu. 

Steps: all 

iLAB STEPS 

Step 1: Launch Visual Studio and Create Project 

.equella.ecollege.com/file/dd98a67d-9ec9-4df4-8603-220cf23d1074/30/BIS311_W5_iLab.html#top">Back to Top 

(a) Log into the Citrix iLab site as you did in the previous labs. Click the Microsoft Visual Studio 2012 icon to launch 

Visual Studio. 

(b) Pull down the File menu and select New Project . . . 

(c) In the New Project dialog, ensure that under Templates in the left column, Visual Basic is selected, and that in the 

center column, Windows Form Application is selected. In the Name field at the bottom of the dialog, enter SalesTax. 

Click OK. 

Step 2: Rename Form and Add Controls

.equella.ecollege.com/file/dd98a67d-9ec9-4df4-8603-220cf23d1074/30/BIS311_W5_iLab.html#top">Back to Top 


the name to SalesTax.vb. Press Enter after entering the new form name. 

(b) Change the Text property of the form to Lab 5 Your Name (where Your Name = your full name), as you have done 

in previous labs. 

(c) Drag the following controls from the ToolBox onto the form, arrange them in a logical fashion, and set their properties 

as indicated in the table below.

BIS 311 DeVry All Week iLab

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?