Handle Data for ComboBox and ListBox

ecommerce web developer development freelance website designer India

ComboBox and ListBox handling is fairly complex. The code in this form demonstrates how to insert and
extract data. It also shows you how to avoid inserting already-existing data a second time.

Option Explicit

Private Sub Form_Load()
cmdLoad_Click
End Sub

Private Sub cmdLoad_Click()
Dim c As Long
Dim ItemText As String
cmdClear_Click
For c = 1 To 10
ItemText = "Item" & c
lstDataChk.AddItem ItemText
Next
End Sub

Private Sub cmdClear_Click()
lstDataChk.Clear
lstData.Clear
cboDropdown.Clear
cboSimple.Clear
cboDropdownList.Clear
End Sub

Private Sub lstDataChk_ItemCheck (Item As Integer)
Dim c As Long
Select Case lstDataChk.Selected(Item)
Case True 'if checked
Dim CheckFlag As Boolean
CheckFlag = False
For c = 0 To lstData.ListCount
'if not in lstData
If lstData.List(c) = _
lstDataChk.List(Item) Then
CheckFlag = True
End If
Next
If Not CheckFlag Then
lstData.AddItem lstDataChk.List(Item)
End If
Case False 'if unchecked:
For c = 0 To lstData.ListCount
'if in lstData:
If lstData.List(c) = _
lstDataChk.List(Item) Then
lstData.RemoveItem (c)
End If
Next
End Select
lblCheckedCount = "Checked items: (" & _
Trim(lstDataChk.SelCount) & ")"
End Sub

Private Sub lstData_DblClick()
cboDropdown.AddItem lstData.List(lstData.ListIndex)
cboSimple.AddItem lstData.List(lstData.ListIndex)
cboDropdownList.AddItem _
lstData.List(lstData.ListIndex)
End Sub

Private Sub cboDropdown_Click()
txtComboClick = cboDropdown.Text
txtComboText = ""
End Sub

Private Sub cboDropdown_Change()
txtComboText = cboDropdown.Text
txtComboClick = ""
End Sub

Private Sub cboSimple_Click()
txtComboClick = cboSimple.Text
txtComboText = ""
End Sub

Private Sub cboSimple_Change()
txtComboText = cboSimple.Text
txtComboClick = ""
End Sub

Private Sub cboDropdownList_Click()
txtComboClick = cboDropdownList.Text
txtComboText = ""
End Sub

Private Sub cboDropdownList_Change()
txtComboText = cboDropdownList.Text
txtComboClick = ""
End Sub

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