Hello friends! In this tutorial, we will add Add, Save, Remove and navigation buttons to a Visual Basic database application. We will continue with the contact form from our previous lesson and use its existing dataset, binding source and TableAdapter. If you have not built that form yet, first follow creating a database in Microsoft Visual Studio . This lesson retains the original Visual Studio 2010 Windows Forms example, with clearer event handlers and explanations of what each button changes. The key distinction is that editing a bound form changes in-memory data first. Adding a row, removing a row and moving to another contact do not necessarily write anything to SQL Server. Our Save button is responsible for sending the pending changes to the database. Figure: A database illustration ...
Hello friends! Today we will create a contact database in Microsoft Visual Studio and connect it to a Visual Basic Windows Forms application. We will begin with an empty project, create a table, enter sample contacts and display those contacts in both a grid and a details form. This tutorial retains the original Visual Studio 2010 walkthrough and screenshots. Its main purpose is to explain the database, dataset and data-binding workflow used by that application. If you are maintaining an older VB project or learning how its generated components work, the same distinctions will help you understand where records are loaded, edited and saved. After completing this part, continue with button controls in a VB database application and updating a database table with VB programming . Our earlier V ...
Hello friends, I hope you are doing well. In this tutorial, we will build a simple serial terminal in Visual Basic 2010. The application will detect the COM ports available on a Windows computer, open a selected port, transmit text, receive incoming data and close the connection cleanly. This article keeps Visual Basic 2010 because that is the environment used in the original project and screenshots. According to the official Microsoft lifecycle record , Visual Studio 2010 reached the end of support in July 2020, so you should use a supported Visual Studio and .NET version for a new production application. However, the serial communication principles explained here still apply to maintenance work, laboratory computers and older engineering projects. We will begin with the electrical and pr ...
