MatchFound, MatchRequired Properties, Change Event, CheckBox Control Example

The following example uses the MatchFound and MatchRequired properties to demonstrate additional character matching for ComboBox. The matching verification occurs in the Change event.

In this example, the user specifies whether the text portion of a ComboBox must match one of the listed items in the ComboBox. The user can specify whether matching is required by using a CheckBox and then type into the ComboBox to specify an item from its list.

To use this example, copy this sample code to the Declarations portion of a form. Make sure that the form contains:

• A ComboBox named ComboBox1.
  
  
• A CheckBox named CheckBox1.

Private Sub CheckBox1_Click()
    If CheckBox1.Value = True Then
        ComboBox1.MatchRequired = True
        MsgBox "To move the focus from the " _
            & "ComboBox, you must match an entry in " _
            & "the list or press ESC."
    Else
        ComboBox1.MatchRequired = False
        MsgBox " To move the focus from the " _
            & "ComboBox, just tab to or click " _
            & "another control. Matching is optional."
    End If
End Sub

Private Sub ComboBox1_Change()
    If ComboBox1.MatchRequired = True Then
    'MSForms handles this case automatically
    Else
        If ComboBox1.MatchFound = True Then
            MsgBox "Match Found; matching optional."
        Else
            MsgBox "Match not Found; matching " _
                    & "optional."
        End If
    End If
End Sub

Private Sub UserForm_Initialize()
Dim i As Integer

For i = 1 To 9
    ComboBox1.AddItem "Choice " & i
Next i
ComboBox1.AddItem "Chocoholic"

CheckBox1.Caption = "MatchRequired"
CheckBox1.Value = True
End Sub