How to Convert Image to Base64 in VB.Net

How to Convert Image to Base64 in VB.Net

This Tutorial is all about How to Convert Image to Base64 in VB.Net. In this tutorial, you will learn about Convert Image to Base64 in VB.Net. Basically, this tutorial will answer some of the questions in StackOverflow.

So let’s get started:

• First is open the Visual Basic, Select File on the menu, then click New and create a new project.

• Then a New Project Dialog will appear. You can rename your project, depending on what you like to name it. After that click OK

Design your form like this just like what I’ve shown you below.

• Add a Button, Textbox and a Picturebox.

• Add this following declaration.

Imports System.IO
Imports System.Drawing.Imaging
Imports System.Data.OleDb

• Add this Public Sub.

Public Class Main
Dim Con As OleDbConnection = New OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" & Application.StartupPath & "\Image.accdb")
Dim Cmd As New OleDbCommand
Dim Da As New OleDbDataAdapterPrivate ImagePath As String = ""

• Add this following Functions

Public Function ImageToBase64(ByVal image As Image, ByVal format As System.Drawing.Imaging.ImageFormat) As String
Using ms As New MemoryStream()
' Convert Image to byte[]
image.Save(ms, format)
Dim imageBytes As Byte() = ms.ToArray()' Convert byte[] to Base64 String
Dim base64String As String = Convert.ToBase64String(imageBytes)
Return base64String
End Using
End Function

Public Function Base64ToImage(ByVal base64String As String) As Image
' Convert Base64 String to byte[]
Dim imageBytes As Byte() = Convert.FromBase64String(base64String)
Dim ms As New MemoryStream(imageBytes, 0, imageBytes.Length)

' Convert byte[] to Image
ms.Write(imageBytes, 0, imageBytes.Length)
Dim ConvertedBase64Image As Image = Image.FromStream(ms, True)
Return ConvertedBase64Image
End Function

• Add this code to the Add new button.

Private Sub BtnAddNew_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnAddNew.Click
TxtBase64.Clear()
PicImage.Image = Nothing
End Sub

• Add this code for BtnImage_Click button.

Private Sub BtnImage_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnConvertToBase64.Click
OfdImage.ShowDialog()
If My.Computer.FileSystem.FileExists(ImagePath) Then
Dim ImageToConvert As Bitmap = Bitmap.FromFile(ImagePath)
TxtBase64.Text = ImageToBase64(ImageToConvert, ImageFormat.Png)
End IfTry
Con.Open()
Cmd = New OleDbCommand(String.Format("INSERT INTO Images ( DateCreated, ImageCode) VALUES('{0}', '{1}')", Date.Now, TxtBase64.Text), Con)
Dim Result = Cmd.ExecuteNonQuery()
If Result > 0 Then
MessageBox.Show("Added image successfully!")
End If
Con.Close()

TxtBase64.Clear()
Catch ex As Exception
End Try

End Sub

• Add this code to the btnConverToImage_Click button.

Private Sub BtnConvertToImage_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnConvertToImage.Click
PicImage.Image = Base64ToImage(TxtBase64.Text)
End Sub

• Finally, Click F5 to run the program.

If you have any comments or suggestion about this lesson, Please Feel Free to contact our webpage.

Download the VB.Net Projects Here

Other articles you might read also:

• How to resize the column in a table using java tutorial
• How to Reorder List in Listbox using VB.Net
• Get List of Installed Fonts Using ListBox in VB.Net
• Attendance System using RFID in VB.Net and MySQL
• Change Background Image And Style in VB.Net

Technology stack and requirements

To run this VB.NET project, you need the following on your development machine:

• Visual Studio 2019 or later. The free Community Edition is enough for building, debugging, and running the project.
• .NET Framework 4.7.2 or higher. Most Windows 10 and 11 systems have it preinstalled through Windows Update.
• MySQL Server 8.0 or MSSQL Express 2019. Choose whichever your capstone panel prefers; both work with VB.NET data adapters.
• MySQL Connector/NET or SqlClient library. Add via NuGet Package Manager inside Visual Studio.
• Crystal Reports (optional). Required only if the project generates printable reports; install the runtime redistributable.

Installing the source code

The download link contains a ZIP archive with the full solution. Extract and set up in five steps:

1. Extract the archive to a folder outside Program Files (avoids permission issues).
2. Open the .sln file in Visual Studio. It loads the full solution with all forms and modules.
3. Restore NuGet packages. Right-click the solution then Restore NuGet Packages if prompted.
4. Import the database. Locate the .sql file in the archive and import via phpMyAdmin (MySQL) or SQL Server Management Studio.
5. Update the connection string in App.config or module code to match your local database name, user, and password.

How to use this project for your BSIT capstone

This VB.NET project maps cleanly to standard BSIT capstone documentation. Suggested chapter alignment:

• Chapter 1 (Introduction). Discuss the problem the system solves in real-world context. Cite Philippine business or academic use cases where a manual process could be replaced.
• Chapter 2 (Review of Related Literature). Compare this system’s features against 5-10 similar published projects. Cite journals like IJERT or IEEE Access for academic-standard sources.
• Chapter 3 (Methodology). Include Use Case Diagram, Data Flow Diagram, Entity Relationship Diagram, and Activity Diagram covering all major workflows in the system.
• Chapter 4 (Results and Discussion). Screenshot each module of the running system with a caption explaining what data it processes and which user role interacts with it.
• Chapter 5 (Conclusion and Recommendations). Identify features that could be added in a Version 2, such as web dashboard, mobile app, or REST API export.

Modules typical of How to Convert Image to Base64

• Master data. CRUD forms for the primary entities the system manages, with search and filter.
• Transaction processing. Data entry forms for the day-to-day operations the system automates.
• Reports. Formatted printable output summarizing activity per day, per user, or per category.
• User management. Login with role-based permissions (Admin, Encoder, Viewer).
• Backup and restore. Export database to a .sql or .bak file and restore when needed.

Common enhancements for capstone review

• Modernize the UI. Add Bunifu or Guna UI controls for a more polished, modern appearance.
• Add printable receipts. Integrate a printer preview form with page-setup options.
• Multi-user concurrency. Ensure the database handles simultaneous writes without lost-update errors.
• Web version. Rewrite the front-end in ASP.NET Core or React for a modern deployment path.