How to Read Lines From a Listbox in Visual Basic

It's a good idea to use a list box control when you need the user to select multiple lines in your Visual Basic application. List boxes display a list of items that you can select one or more items from. In VB, you can use the "Items" property to add or get items from a list box control. The property enables you to obtain a reference to the list of items, which you can use to read the lines in the control.

Instructions

1. Launch Microsoft Visual Basic Express, click "New Project" on the left pane of your computer screen and double-click "Windows Forms Application" to create a new project.

2. Double-click "ListBox" from the "Toolbox" pane to add a new list box control on your form. Double-click "Button" to create a new button on your form.

3. Double-click the form to create a new Load event procedure and add the following code to add items to the list box control:

   Me.ListBox1.Items.Add("Line1")

   Me.ListBox1.Items.Add("Line2")

   Me.ListBox1.Items.Add("Line3")

   Me.ListBox1.Items.Add("Line4")

   Me.ListBox1.Items.Add("Line5")

4. Double-click the button to create a new click event procedure and add the following code to read all the lines from the list box control:

   For Each item In Me.ListBox1.Items

   MessageBox.Show(item.ToString)

   Next

5. Press "F5" to run the program and click "Button1" to display a message box for each line in the list box.

References

• MSDN: ListBox.Items Property
• MSDN: ListBox Control