ArrayList to ComboBox Items Collection using VB.Net
ArrayList to ComboBox Items Collection using VB.Net.
In this tutorial, you will learn how to import your array list collection to your ComboBox Item Collection.
First, create your project and name it as you like.
Next, add a combobox in your blank Form1 designer and double click the Form1 itself.
After that, let’s create our own ArrayList and we will make it as our combobox’s data source for its item collection. Here’s the line of code:
Public Class Form1
Dim items As New ArrayList
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
items.Add("www.itsourcecode.com")
items.Add("arraylist to combobox")
items.Add("visual basic tutorial")
ComboBox1.DataSource = items
End Sub
End Class
After copying the line of code and paste it on your Form1 code canvass, here’s the output.
As you can see, all the values that we have added on our ArrayList significantly shows to our combobox items.
Array list can be useful in many ways especially when you want to collect ordered object. Also, in each object inside the array list can be indexed individually.
For questions or any other concerns or thesis/capstone creation with documentation, you can contact me through the following:
E-Mail: [email protected]
Facebook: facebook.com/kirk.lavapiez
Contact No.: +639771069640
Ian Hero L. Lavapiez
BSIT Graduate, soon to be MIT.
System Analyst and Developer
Related topic(s) that you may like:
- Clearing Text Controls using VB.Net For Loop Statement
- Transferring Multiple Data from DataGridView Rows to mySQL Database
Frequently Asked Questions
How does this VB.NET ComboBox example work?
Populating ComboBox items (from array, List(Of T), DataTable, SQL query), DisplayMember vs ValueMember binding, SelectedIndexChanged event handling, auto-complete configuration, cascading dropdowns.
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.