ListBox control in ASP.NET using VB.NET

In this article we will learn how to use ListBox control in ASP. NET.
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In this article we will learn how to use ListBox control in ASP. NET.

ListBox Control:

The ListBox control is used to create a single- or multi-selection drop-down list.


Rows: The number of rows displayed in the list.

SelectionMode: Allows single or multiple selections.

Items: The collections of items in the list.

ForeColor: Color of the text within the control.

For example:

Drag the control ListBox and a Button on the form and select ListBox control property items to add the items in list.

Such as:


Figure 1.

Now, Click on the items property and add the items in the list.

list 2.gif

Figure 2.

Now click on the OK button. The form looks like this:


Figure 3.

Now double click on the Button control and add the following code.

Protected Sub Button1_Click(ByVal sender As Object, ByVal e As EventArgs) Handles Button1.Click

        Dim num As Integer() = ListBox1.GetSelectedIndices()

        For Each i As Integer In num



    End Sub

GetSelectedIndices- gets the array of index values for currently selected items in the ListBox control.

Now save and run the application.

Single selection: This will shows the single selections from the list.


Figure 4.

Multiple selections: set the property selectionmode single to multiple. Such as


Figure 5.

Now run the application and select more than one items from the list.


Figure 6.


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