C++ Code Helper

C++ Native & CLI Code Examples for Visual Studio

When you need code for a specific job, then check out this list. Instead of scrounging around in your notes, I put some major code snippets here for you. In most cases they are copied from our C++ classroom projects.

STARTER APPS Forms & MDI Projects (Multi-forms) Color Dialog Control (How to save form backcolor and get it back later)	Starter Hello World Projects Native version CLR Console version GUI version
	Change form background color or change form size at run time. Reset form/control colors How to center form in code Make your own color themes. Make ENTER key work like TAB How to launch a browser & go to URL
	MDI Applications (3 classes: get project here) MDI parent form Manager Form General Declarations class
	Changing Form Colors and the Custom ColorDialog Control sample.
	How to trap the Form_Closing Event. Do a confirm exit with a MessageBox. Traps the X key, control box exit, and ALT-F4
Common Controls	Clearing/resetting common controls
Data Entry & Validation	CLR Console Version Data Entry 1 Data Entry 2 Data Entry 3 GUI Version DataEntry 4(Listboxes) Managing Data Entry Issues Copy selected item in Listbox to a textbox How to concatenate strings Simple math operations (computing sales tax) How to display items & pricing as currency Data Validation Use the KeyDown & KeyPress events in validation Validating letters and numbers in textboxes Data type alias option Create an alias for a .Net data type	Native Version Data Entry 1 Data Entry 2 Data Entry 3
Event Handlers	Event Handler for Multiple Controls Handle multiple radio buttons in one click event Keypress/KeyDown events to trap keys.
Using List Boxes	Add Item to list box Remove list box item Load list box with items & pricing information at design time Load List Box with Items & Pricing at run time Getting the list box items, pricing, & photo information Foreach Loop and listboxes Multi-selection List boxes & For Each Loop Using two list boxes to select items CLEAR LISTBOX ITEMS AND DESELECT ITEMS
If Switch Loops, Inline IF statements	If statements Native version CLR Console version GUI Version Switch Native version CLR Console version GUI Version For Loops Native version CLR Console version GUI Version Logic Loops Native Do & While loops (Pre-post test) Collection Loops Native Ranged For Loop CLR version: Simple For Each loop foreach loop for clearing textbox controls inside a container control
	Making Decisions with If logic Using YES-NO buttons on message box Intro to using Switch Inline IF statements If statements short hand version Counting User Input: Getting an ATM PIN Number Using Loops Loops (For, do-while, while, nested for) For-Each loops
Formatting Strings	How to format numbers How to format data as currency How to create multi-line text in a label Working with escape sequences
Custom Functions/Methods	Native Version Void functions Return value version Function with parameters Overloaded Functions CLR Console version 1- Void functions 2-Functions that return a value 3-Functions that take arguments AND return a value CLR GUI version 4-Introduction to Methods (p. 348) Overloaded Methods How to create custom methods (functions) Using Overloaded Methods
String Functions	Using Substring How to use TryParse
Variables & Properties Running Totals & Counts	How to use module-level variables Using Totals & Counts with module-level variables Using variables to add contents of textboxes Custom Properties
	Running Totals & Counts Native version CLR Console version GUI Version A word about x++ vs ++x
BitWise Operations	AND Bitwise ops (console app) OR Bitwise ops (console app) XOR Bitwise ops (console app)
Collections, Structs. & Enumerations	Collection Loops Native Ranged For Loop foreach Loop using a list box foreach loop to find textboxes in the controls collection foreach loop for clearing textbox controls inside a container control
	Working With Lists & ListView Controls. (Get project here. There is 1 form and the Employee class) Main Form:Add/delete employess Employee class
	CLR Version Enumerations Enumeration demo Structs Payroll Example Enumerations Income Example	Native Version Structs Enumerations
Arrays & Control Arrays	CLR Version Arrays: Console App: Arrays Part 1 Creating Data Arrays, sorting them, cycle through an array and add items to a listbox Add array items in code & compute sum of values Working with Control Arrays(baseball demo)	Native Version Arrays Part 1 Part 2 Part 3
Delegates & Pointers (See CS131 below)	Introduction to pointers Using Delegates
File I/O: Textfiles & Binary Files	CLR Version StreamReader & StreamWriter Read/Write to text file (GUI) Read TextFile (Console version) Read/Write TextFile (Console version) BinaryReader & BinaryWriter Read/Write to a binary file file (Console Version)	Native Version Read Text File Write to Text File
Classes, Properties, Methods, Constructors & Inheritance	CLR Console Version Classes Part 1 Classes Part 2 Room class for part 2 GUI Version How to add a new class to a project Introduction to Classes Part 1 (code) Introduction to Classes Part 2 Custom Properties Overloaded constructors Overloaded methods Inheritance demo using three forms	Native Version Classes part 1 Classes Part 2 Rectangle class Program using Rectangle
Data Structures (CS131) Lists (See Collections & Enumerations above) Structs Sorted Lists Queues Stacks	CLR Version Pointers Console Part 1 Console Part 2 Pointers (GUI) Text Section Structs Payroll Example Enumerations Income Example Working with Structs Sorted Lists & DataGridView control Get Project here Working with queues Get program here Working with Stacks Console Version GUI Version :Learning about Stacks. Get program here. Working with Queues GUI Console Version Working with Dictionaries Console Version	Native Version Pointers Simple Pointers Smart Pointers Vectors Vectors Vectors & Ranged-For Loops Structs Enumerations Algorithms & Iterators STL Templates Custom template STL : Lists (Replaces Linked List) Map The Call Stack Queue & Deque Ron's Cookie Store
ADO and MS Access Database programming	ADO in code to fill a datagridview control Use SQL transaction to insert records from a List<>


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