Visual Basic 2019 Tutorial

[Walda Caesar]

VBNet is a simple, modern, object-oriented computer programming language developed by Microsoft to combine the power of .NET Framework and the common language runtime with the productivity benefits that are the hallmark of Visual Basic. This tutorial will teach you basic VB.Net programming and will also take you through various advanced concepts related to VB.Net programming language.

This tutorial has been prepared for the beginners to help them understand basic VB.Net programming. After completing this tutorial, you will find yourself at a moderate level of expertise in VB.Net programming from where you can take yourself to next levels.

VB.Net programming is very much based on BASIC and Visual Basic programming languages, so if you have basic understanding on these programming languages, then it will be a fun for you to learn VB.Net programming language.

Here, we will learn the Visual Basic (VB) tutorial with examples. In Visual Basic tutorial, we covered topics like vb operators, vb classes, vb static, vb partial classes, vb methods, vb arrays, vb collections, etc., for beginners and experienced with examples.

Visual Basic (VB) tutorial is prepared to help beginners and experienced people interested in learning and implementing the applications using .NET Framework with Visual Basic. We covered topics from basic to advanced in the Visual Basic tutorial, and those will give a clear idea of how to use Visual Basic in our applications with live examples.

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Want to get started with visual scripting as soon as possible? This quick-start tutorial introduces the basics of creating node-based logic to help you make your own games using visual scripting in Unity.

Visual scripting in Unity helps team members create scripting logic with visual, drag-and-drop graphs instead of writing code from scratch. It also enables more seamless collaboration between programmers, artists, and designers for faster prototyping and iteration.

Visual scripting is a great solution for both designers and artists who want to test ideas, make changes, or maintain more direct control over their work in Unity. Non-programmers can also make use of custom nodes and graphs created by more technical team members.

Script Graphs are the main tool for creating interactions in your projects. Using node-based actions and values, these graphs let you execute logic in any order you specify, be it at every frame or when an event occurs.

State Graphs allow you to create self-contained behaviors that tell objects what actions to execute when they are in a particular state. They are suited for high-level logic such as AI behaviors, scene or level structure, or any aspect of a scene that requires behaviors that transition between states.

Visual scripting is designed to show values throughout the graph during Play mode, and it will highlight which nodes are being executed as it happens. If an error occurs at runtime, the source will be identified and highlighted within the graph.

Increase accessibility for less-technical creators with user-friendly naming conventions, commenting and grouping features that keep graphs simple to read, and the Fuzzy Finder menu, which makes it easy to search for what you need.

Use a method, field, property, or event from Unity, any third-party plug-in, or even custom scripts within your graphs. Visual scripting directly accesses your codebase via reflection and is always up to date.

Download Unity 2021 or above to have Unity Visual Scripting available automatically within the Editor. For 2018, 2019, and 2020 Unity releases, Unity Visual Scripting (formerly known as Bolt) is available to download for free from the Unity Asset Store.

"Unity", Unity logos, and other Unity trademarks are trademarks or registered trademarks of Unity Technologies or its affiliates in the U.S. and elsewhere (more info here). Other names or brands are trademarks of their respective owners.

This VB.NET tutorial is a step-by-step guide to learn Visual Basic programming. This free Visual Basic tutorial covers topics like Arrays, Strings, Operators, Switch, Loops, etc. This VB .NET tutorial will help you learn VB.NET basics and advanced concepts.

Just below the menu bar, you have the toolbar which is a collection of some of the options that a normal user needs to use more frequently. When you open the visual basic editor the first time you will only have the standard toolbar, just like the image below.

The project window is the place where you can see all the ongoing projects. Whenever you open a file and then open the visual basic editor you can see the hierarchy of that file in the project window.

As the name suggests the properties window gives you access to the properties of the selected object. Each object, for example, a worksheet has its own properties that you can see and make changes in it.

Just like Excel Watch Window, the visual basic editor also has a watch window where you can add expressions to track them. You simply need to select the expression and then right-click and go to add a watch.

Just like the find and replace in Excel, the VBA editor has its own find and replace option that you can use to find and replace values from procedures. To open the FIND option, you can use the shortcut key Control + F, and to open the replace you can use the shortcut key Control + H.

The find and replace option in VBE gives you different search patterns, like, if you want to find and replace something from the current procedure, from the current module, or from the current project.

When you need to write code, you have to insert a module and for this, you simply need to go to the project window and right-click on the project name, and from that menu go to Insert and select module.

Now, look at the below example where I am adding add a VBA function (VBA LEFT Function), and the moment I type the name of the function, it shows me a tooltip for all the arguments which I need to define.

Each object in VBA comes with some properties and methods and when you insert an object or a command in the code window and then you enter (.) it shows you the complete list of properties and methods which come with that object.

While defining expressions for a property or a method you can use the list of constants (Using Constants in VBA) available. In the below example, while using the Border Around method it showed me all the constants which are available for the weight argument.

When you can write multiple codes in a single code window and VBA separate them with a divider, but if you want to have a more focused view, you can change the view of the code window. Below I have the codes in a single module.

When you write a VBA code there could be a chance that that code has a bug or an error that can come while executing it. In that case, the best way is to execute that code step by step and validate each line of code.

This tutorial guides you through the process of creating a simple applicationpowered by ADO.NET Entity Framework. In less than 5 minutes you will have aready-to-use data access layer for your business objects.

ADO.NET Entity Framework is an object-relational mapping (ORM) framework forthe .NET Framework. It is designed to enable developers to create data accessapplications by programming against a conceptual application model instead ofprogramming directly against a relational storage schema. The goal is todecrease the amount of code and maintenance required for data-orientedapplications.

For Entity Framework 6, you will also need a NuGet Visual Studio extension installed since it is used for adding EntityFramework NuGet package. Alternatively you may create model for Entity Framework v4, which don't require NuGet, in this tutorial.

In this sample we will create a simple console application. It could be any otherproject type as well, but for simplicity's sake we'll use console projectthroughout the tutorial. Start Visual Studio and create a new console application.

The model you've just generated is ready to use. Its name is Model1.edmx,unless you changed it in the step 2. You can inspect it visually in thedesigner or take a look behind the scenes with XML Editor.

The wizard creates classes for all selected tables that represent entities.It also creates a descendant of System.Data.Objects.DbContext class,which controls the connection to the database, and the whole data flow. Thisclass includes properties and methods named after your database objects.You will use these members to retrieve and modify data in the context.The code is contained in an autogenerated file Model1.Designer.cs (Model1.Designer.vb).

Note that if you have an association between two properties of non-coinciding numeric types, you can manually change both conceptual and storage types to the type that will be wide enough to include data for each property.

All Entity Framework operations are executed through a DbContext descendant (default since Visual Studio 2012)or through a ObjectContext descendant. In our tutorial, it's a DbContext descendant, which is named BigcommerceEntities. To retrievedata you have to first create an instance of the context, then prepare aquery with LINQ to Entities or EntitySQL or their mix, andthen access the object returned by the query, which may be a collection ofobjects or a single object.

As simple as that. You prepare a query and then iterate through it as you woulddo with a usual collection of objects. The database interaction is performed byEntity Framework in the background. Now let's see who is who in this code sample.

What earlier was adding rows to tables, now is just adding new objects tocontext collections. When you are ready to send the changes to the database,call the SaveChanges() method of the context. Before doing this, you mustfirst set all properties that do not support null (Nothing)values. The SaveChanges() method generates and executes commands that performthe equivalent INSERT, UPDATE, or DELETE statements against the data source.

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