How to Remove a Highlight Selection in a Listbox

Add items to a ListBox in VB.NET.

Removing a highlighted selection in a "ListBox" control can easily be accomplished by using the "Items" property of the "ListBox" control. The "Items" property enables you to obtain a reference to the list of items that are currently stored in a "ListBox." With this reference you can add items, remove items, and obtain a count of the items in the collection. This process can help you set a "ListBox" control to a default state in order for the user to make a different selection.

Things You'll Need

• Microsoft Visual Studio

Instructions

1. Launch Microsoft Visual Studio, click "New Project" from the left pane of your computer screen, and expand "Visual Basic" below "Installed Templates." Click "Windows," and double-click "Windows Forms Application" from the center of the dialog window to create a new project.

2. Double-click "ListBox" to add a new control to your form, then double-click "Button" to add a new button to your form.

3. Double-click your form to create a form load event and add the following code to add some items to your "ListBox" control:

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

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

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

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

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

4. Switch back to "Form" design view and double-click "Button1" to create a click event for this button. Add the following code to remove a highlighted selection in the "ListBox" when the button is clicked:

   Dim selectedIdx = Me.ListBox1.SelectedIndex

   Me.ListBox1.SetSelected(selectedIdx, False)

5. Press "F5" to run your program, and click an item on the "ListBox" to highlight it. Click "Button1" to clear the selection.

References

• MSDN: ListBox.Items Property
• MSDN: ListBox.SetSelected Method