The latest articles on DEV Community by Iheb Elghouil (@iheb_elghouil_980b7d2e284). https://dev.to/iheb_elghouil_980b7d2e284 https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F3744413%2Fa1312965-ac1d-475c-9c58-171e195a481e.jpg https://dev.to/iheb_elghouil_980b7d2e284 en Iheb Elghouil Sat, 31 Jan 2026 20:47:00 +0000 https://dev.to/iheb_elghouil_980b7d2e284/vbnet-windows-forms-tutorial-validate-numeric-input-in-textbox-before-showing-messagebox-1no6 https://dev.to/iheb_elghouil_980b7d2e284/vbnet-windows-forms-tutorial-validate-numeric-input-in-textbox-before-showing-messagebox-1no6 <p><a href="https://youtu.be/0hfX4dR_GTM?si=cyaLkDmSAp9bBamg" rel="noopener noreferrer"></a></p> <p>Learn how to validate numeric input in a VB.NET Windows Forms application before displaying it in a MessageBox. This beginner-friendly tutorial shows step by step how to ensure users can only enter numbers in a TextBox.</p> <p>In this tutorial, you will learn:<br> ✔ How to create a VB.NET Windows Forms project<br> ✔ How to add a TextBox and a Button<br> ✔ How to validate numeric input using Double.TryParse<br> ✔ How to show an error message if the input is not a number<br> ✔ How to display valid numeric input in a MessageBox</p> <p>This tutorial is perfect for beginners and intermediate VB.NET developers who want to create professional, user-friendly Windows Forms applications.</p> <p>🔹 Technologies used:<br> VB.NET<br> Windows Forms<br> Visual Studio</p> <h1> VBNet #WindowsForms #NumericInput #MessageBox #TextBoxValidation #Programming #VBNetTutorial </h1> programming beginners dotnet tutorial Iheb Elghouil Sat, 31 Jan 2026 20:42:52 +0000 https://dev.to/iheb_elghouil_980b7d2e284/vbnet-calculator-tutorial-design-the-ui-with-textbox-buttons-step-by-steppart1-3i18 https://dev.to/iheb_elghouil_980b7d2e284/vbnet-calculator-tutorial-design-the-ui-with-textbox-buttons-step-by-steppart1-3i18 <p><a href="https://youtu.be/wt9rnMmza2M?si=PX5Jn7X6h8AD6vYm" rel="noopener noreferrer"></a></p> <p>In this VB.NET tutorial, you will learn how to design a calculator user interface using Windows Forms (WinForms).</p> <p>In this video, we create the TextBox display and all calculator buttons,<br> set their correct names and texts, and prepare the interface for the logic<br> that will be added in the next videos.</p> <p>This tutorial is perfect for beginners who want to learn VB.NET step by step<br> by building a real Windows application.</p> <p>🔹 What you will learn in this video:<br> Create a Windows Forms App in VB.NET<br> Add and configure a TextBox for calculator display<br> Create number buttons (0–9)<br> Create operator buttons (+, −, ×, ÷)<br> Set proper control names for clean coding</p> <p>📌 Next videos in this series:<br> Coding number buttons<br> Adding calculator logic<br> Handling operators and errors</p> <p>👍 If this video helps you, don’t forget to like and subscribe for more<br> VB.NET tutorials and beginner-friendly projects.</p> <h1> vbnet #vbnettutorial #calculatorapp #winforms #visualstudio #programming #beginners #beginnertutorials </h1> programming beginners dotnet tutorial