VB.NET: CheckedListBox Control Sample Project

Design UI

Code
 Public Class Form1

    Private Sub Form1_Load(ByVal sender As System.Object, _
        ByVal e As System.EventArgs) Handles MyBase.Load
        CheckedListBox1.Items.Add("Red", False)
        CheckedListBox1.Items.Add("Orange", False)
        CheckedListBox1.Items.Add("Yellow", False)
        CheckedListBox1.Items.Add("Green", False)
        CheckedListBox1.Items.Add("Blue", False)
        CheckedListBox1.Items.Add("Black", False)
        CheckedListBox1.Items.Add("Purple", False)
        CheckedListBox1.Items.Add("Pink", False)

        Button1.Text = "Get Items Status"
        Button2.Text = "Selected Count"
        Button3.Text = "Checked All"
        Button4.Text = "Unchecked All"
    End Sub

    Private Sub Button1_Click(ByVal sender As System.Object, _
        ByVal e As System.EventArgs) Handles Button1.Click
        Dim str As String = ""
        For i As Integer = 0 To CheckedListBox1.Items.Count - 1
            If CheckedListBox1.GetItemChecked(i) = True Then
                str = str & CheckedListBox1.Items(i).ToString & _
                " = Selected" & vbCrLf
            Else
                str = str & CheckedListBox1.Items(i).ToString & _
                " = Not Selected" & vbCrLf
            End If
        Next i
        MsgBox(str)
    End Sub

    Private Sub Button2_Click(ByVal sender As System.Object, _
        ByVal e As System.EventArgs) Handles Button2.Click
        MsgBox(CheckedListBox1.CheckedItems.Count)
    End Sub

    Private Sub Button3_Click(ByVal sender As System.Object, _
        ByVal e As System.EventArgs) Handles Button3.Click
        For i As Integer = 0 To Me.CheckedListBox1.Items.Count - 1
            CheckedListBox1.SetItemChecked(i, True)
        Next i
    End Sub

    Private Sub Button4_Click(ByVal sender As System.Object, _
        ByVal e As System.EventArgs) Handles Button4.Click
        For i As Integer = 0 To Me.CheckedListBox1.Items.Count - 1
            CheckedListBox1.SetItemChecked(i, False)
        Next i
    End Sub

End Class


Runtime
First Load:

Get Item Status:

Count Selected:

Checked All:

Unchecked All:

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