Master Visual Basic .NET by Building a Point Of Sale System

Learn to create a Visual Basic console project and write a hello world program using Console.WriteLine, pause with Console.Read, and declare string and integer variables with Dim.

Learn string format and string interpolation in VB.NET by building a console application that formats first name, last name, and age using string.Format and interpolation patterns.

Introduces basic arithmetic operators in VB.NET, including addition, subtraction, multiplication, division, integer division, modulus, square, and Math.Pow; covers option strict and explicit and console I/O.

Discover how assignment operators in vb.net combine values, including plus and assignment, minus and assignment, multiplication and assignment, division and assignment, exponentiation and assignment, and string concatenation.

Explore how logical operators and, or, and not combine conditions to yield true or false, with VB.NET examples testing 10 is greater than five and 20 is greater than 10.

Learn about short-circuiting operators in Visual Basic .NET by comparing AndAlso and OrElse with And, and see how the first condition controls evaluation.

Explore string comparison in Visual Basic .NET, using equality, inequality, and ordinal compare to show case sensitivity with uppercase vs lowercase strings.

Create a discount calculator app in VB.NET that computes savings and the final price from a product price and a 15% discount, displaying currency-formatted results in two-column console output.

Learn to use if...then...else and case statements in Visual Basic .NET by building an enum-based example that prints messages based on gold, silver, or blue member types.

Learn how to implement nested if-then-else logic using an isAdmin flag to control data access, showing full data for admins and access denied messages for non-admins.

Use the select case statement in Visual Basic .NET to evaluate a workdays enum, handle Monday, Tuesday, and Friday with console messages, and compare with else for invalid inputs.

Build a grade calculator app in Visual Basic .NET that validates user input, converts strings to integers, and assigns grades A through F based on 0–100 scores.

Explore how a for next loop controls repetition by setting a counter, start value, end condition, and step, printing numbers from start to end and backward when step is negative.

Learn to print the alphabet A to Z in VB.NET using a for next loop, converting ASCII codes 65–90 (uppercase) and 97–122 (lowercase) to characters, with an optional asterisk prefix.

Master the for...next loop to print A to Z diagonally, decrementing the loop variable and composing strings with ascii codes to align letters.

Explore nested loops by building a two to twelve multiplication table with an outer loop for the table and an inner loop for multipliers, formatting output for alignment.

Explore the for each...next loop in VB.NET by iterating over integer and string collections, retrieving items and characters, and displaying results.

Learn how to declare and use arrays in VB.NET, understand zero-based indexing, and check bounds with the length property and get upper bound or get lower bound methods.

Declare and initialize an array in Visual Basic .NET, set initial values, check the upper bound and length, handle mismatched members, and extract data as strings.

Explore looping through arrays using for and for-each loops to extract values, compare zero-based and one-based indexing, and display results from sample code.

Learn to find a string index in an array with index of and last index of, using a for loop and -1 for not found, as shown with Java.

Learn how to use arraylist in vb.net, adding diverse data types and dynamic resizing, with system.collections and ArrayList. Practice for and for-each loops to display items from zero-based indices.

Master visual basic .net sub procedures by building and calling private and public subs, with and without parameters, handling keyboard input, and distinguishing parameters and arguments for a point-of-sale system.

Learn to create a function procedure in Visual Basic .NET that returns a value, compare it to a sub procedure, and test with a calculator example using optional parameters.

Create a VB.NET currency converter that turns USD into INR at 65.27 per USD, validates input, and supports end/exit and clear.

Build a Visual Basic Windows Forms app and learn event driven programming by handling the form load and mouse click events, adjusting the form's title, background color, and window controls.

Master the Windows form closing event by prompting a yes/no confirmation with a message box, then use e.cancel to prevent closure or proceed to close when the user confirms.

Master keyboard input in Visual Basic .NET by using if-else chains to detect arrow keys (37–40), display results in a message box, and transfer codes to letters with dot to string method.

Learn to validate TextBox input in VB.NET by detecting empty strings, providing feedback with a label and message box, and trimming spaces with trim, trim start, and trim end.

Learn to create blinking and scrolling text in a Visual Basic .NET Windows Forms app, with speed controls, a start/stop interface, and live status indicators.

Learn to create blinking and scrolling text in VB.NET by configuring direction (right-to-left or left-to-right), speed, and display with variables, strings, radio buttons, and a timer.

Learn to implement blinking and scrolling text in Visual Basic .NET by handling radio button events, manipulating label text, and controlling a timer to rotate characters and adjust speed.

Learn to implement blinking and scrolling text in Visual Basic .NET using a timer. Adjust the speed and apply color changes with odd/even case logic to create visible blinking.

Build a Windows Forms interface using checkbox controls grouped in a group box to select languages, then display selected options in a multi-line text box with show and clear buttons.

Learn to use radio button controls to select a single option within grouped interfaces like gender and marital status, and display the selected data on a form.

Explore handling radio button controls with text boxes in VB.NET, validating input, composing a display string with first name, last name, gender, and marital status, and setting defaults.

Learn to implement a combo box control in a Windows Forms app, populate it with a string collection, configure drop-down list behavior, and manage selected index and height.

Add items to a combo box using the with keyword, configure drop down style, and handle the selected index changed event to display the item and index in labels.

Master combo box controls by adding items with two buttons and via code, validating input, opening the dropdown, and reusing a routine to prevent runtime errors.

Build and manage a combo box in a point-of-sale app by adding items, clearing content, and resetting to default. Validate removals by index with simple input and range checks.

Learn how to edit items in a combo box using a text box and save button in Visual Basic .NET, including input validation, trimming spaces, and user notifications.

Build a Windows Forms app with a left combo box and a right list box that transfer items, inform duplicates, and bind the combo box to a months data source.

Explore list box controls by transferring items from a combo box, using find string for duplicates and a message box, and update item counts with clear and close actions.

Declare a data source list of strings and bind it to both a combo box and a list box to synchronize selections.

Learn to manage a list box in a form by setting and clearing the data source, enabling the scrollbar, and implementing add, move up, move down, remove, and clear operations.

Learn to build a Windows Forms app with DataGridView to add rows and calculate item and salary totals, including image path and date handling.

Create a Microsoft Access database for a point of sale system, build an employees table with key fields, and link to account type and department tables via relationships and keys.

Create a customers table with fields for id, first name, last name, email, phone, address, and notes, and link it to a customer type table using a lookup wizard.

Create a product table with id, barcode, name, description, standard cost, unit price, units in stock, reorder level, and discontinued status; connect category and supplier tables with lookup fields.

Build a point-of-sale database by creating sales, payment method, and sale details tables, setting primary keys, lookups to employees and customers, and enforcing one-to-many relationships with referential integrity.

Design a product management form with create, read, update, delete operations—backed by a database, using windows forms controls like panel, binding navigator, and data grid view.

Learn to connect a VB.NET point-of-sale app to a Microsoft Access database, build a provider-based connection string, and test open/close operations.

Learn to import data from a database into form controls using binding, and clear bindings across text box, combo box, checkbox, data grid view, binding navigator, and picture box.

Import data into a VB.NET form for a point of sale system using data adapters, datasets, and binding controls for suppliers and categories.

Learn to bind a data grid view to a binding source and configure its columns by code, including headers, widths, font, alignment, and hidden indexes.

Insert data into the database using an insert into command while managing controls and validating product barcode to be numeric, 10–13 digits, with no spaces or zero.

Guide learners through a product management workflow for a point of sale system, validating cost, price, stock, and other numeric fields to prevent database errors.

Declare variables and build an insert into statement to add product data to the products table, converting data types and handling errors in a VB.NET point-of-sale system.

Learn to update product records in the point-of-sale system by validating inputs, confirming updates, and executing a database update against the products table using the product barcode.

Learn to delete a product by executing a delete from products using a barcode as the reference, then confirm deletion and refresh the user interface and database.

Develop a barcode search feature on the form with a search button, numeric input validation, and data grid display, reusing existing commands and testing by inserting new items.

Create and configure a VB.NET MDI parent form to host child forms, set startup, add a menu and status bar, and launch product management as a child form.

Design a point-of-sale interface by creating a new form named point-of-sale, setting fixed border, and arranging group boxes, labels, and text boxes for transaction details, customer info, and payment method.

Continue designing the point-of-sale interface by configuring product information, barcode scanning, stock details, and a data grid to track items, totals, and status.

Develop a point of sale interface by loading employee data and current date, and enabling a timer. Populate the payment type combo box from the database using a data adapter.

Set up a grid view for the point of sale system by configuring a data grid view with headers: product barcode, product name, description, unit price, quantity, and subtotal. Adjust column height and width, copy header settings across columns, and test the form to display subtotals and the total amount.

Create an automatic customer ID and transaction ID system that resets to one when the year changes, generating IDs from the highest sales reference number and using year-based formatting.

Create a point-of-sale interface that handles customer data, password entry for members, and displays full names in read-only fields, using radio buttons and database lookups by member ID.

Pulls product data by barcode, searches via barcode or button, and displays ID, name, description, price, and stock for quick point-of-sale operations.

Build a point of sale system by managing products in a data grid view, computing subtotal as unit price times quantity, checking duplicates and stock, and summing the total amount.

Master Visual Basic .NET by building a point of sale system demonstrates removing items, updating totals, and calculating change with input validation and error handling in a transaction workflow.

Build and populate the sales detail table from the data grid view, linking sales IDs and product IDs, validating data types, and testing with multiple products in the point-of-sale workflow.

Update stock by deducting sold items from unit in stock using barcode scans and product IDs. Test updates in the database and ensure auto-generated transaction IDs and out-of-stock handling.

Refine the point of sale system by implementing a form closing event with a confirmation box and yes/no logic to prevent accidental closes during barcode scans.