This tutorial is all about How to Invert an Image in Picturebox using VB.Net. In this post i will teach you How to Invert an Image in Picturebox using VB.Net. So let’s get started:
As a continuation of this tutorial. We will use the How to Add Watermark to a Picture using VB.Net.
- First, Design your Form like this one below.
Add 2 PictureBox and a Button.
- After designing the form. Click the Button and add this following codes.
[vbnet]
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim pic As New Bitmap(PictureBox1.Image)
For y As Integer = 0 To pic.Height - 1
For x As Integer = 0 To pic.Width - 1
Dim inv As Color = pic.GetPixel(x, y)
inv = Color.FromArgb(255, 255 - inv.R, 255 - inv.G, 255 - inv.B)
pic.SetPixel(x, y, inv)
PictureBox2.Image = pic
Next x
Next y
End Sub
[/vbnet]- Then Click F5 to Run the Program.
Output:
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Frequently Asked Questions
What does this VB.NET WinForms control example demonstrate?
Core Windows Forms control (TextBox, CheckBox, RadioButton, ListBox, TreeView, ProgressBar, Button, DateTimePicker, PictureBox, MenuStrip, ToolStrip, Chart, etc.) usage pattern: properties, events, data binding, common gotchas.
What Visual Studio and SQL Server versions does this VB.NET project require?
Most projects use VB.NET WinForms on .NET Framework 4.5+ with SQL Server 2012 Express or higher. To run: install Visual Studio 2019 / 2022 (Community is free) with the ‘Desktop development with .NET’ workload, install SQL Server Express + SSMS, open the .sln file, build, run.
How do I set up the database for this VB.NET project?
Open SQL Server Management Studio (SSMS) and connect to your SQL Server (e.g. localhost\SQLEXPRESS). Right-click Databases, choose Restore Database OR New Database then import the included .sql script. Update the connection string in App.config (or in code-behind Module) with your server name + credentials. Rebuild and run.
Can I use this VB.NET project for a BSIT capstone or thesis?
Yes, VB.NET is one of the most accepted languages by Philippine BSIT panels. Extend it: add role-based access (admin/staff/customer login redirect), Crystal Reports or RDLC reports, dashboards with Chart control, audit log, multi-branch support. Pair with Chapter 1-5 documentation matching your panel’s rubric.
Why am I getting ‘connection error’ or ‘cannot find SQL Server’?
Three common VB.NET issues: (1) Connection error: SQL Server isn’t running. Open SQL Server Configuration Manager and verify SQL Server (SQLEXPRESS) service is started. (2) Wrong server name in connection string. Try .\SQLEXPRESS, (local)\SQLEXPRESS, or your machine name. (3) Login failed: SQL Server is set to ‘Windows-only’ authentication. Switch to Mixed Mode in SSMS Server Properties, Security.
Where can I find more VB.NET projects with source code?
Browse the VB.NET Projects hub for the full library. For C# WinForms alternatives see C# Projects. For ASP.NET web alternatives see ASP.NET Projects. For BSIT capstone idea lists see 150 Best Capstone Project Ideas.