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Tip of the Day
Language: VB7
Expertise: Intermediate
May 26, 2003

ResetControls - Reset the value for the input array of controls

' Resets the value for the input array of controls, and thier child controls
' Example:
'   - reset all the controls on the form: ResetControls(Me)
'   - reset specific controls: ResetControls(TextBox1, CheckBox1, GroupBox1)

Sub ResetControls(ByVal ParamArray ctls() As Control)
    ' clear input control
    Dim ctl As Control
    For Each ctl In ctls
        If TypeOf (ctl) Is TextBoxBase Then
            CType(ctl, TextBoxBase).Text = ""
        ElseIf TypeOf (ctl) Is CheckBox Then
            CType(ctl, CheckBox).Checked = False
        ElseIf TypeOf (ctl) Is RadioButton Then
            CType(ctl, RadioButton).Checked = False
        ElseIf TypeOf (ctl) Is ListView Then
            CType(ctl, ListView).Items.Clear()
        ElseIf TypeOf (ctl) Is TreeView Then
            CType(ctl, TreeView).Nodes.Clear()
        ElseIf TypeOf (ctl) Is ListBox Then
            CType(ctl, ListBox).Items.Clear()
        ElseIf TypeOf (ctl) Is ComboBox Then
            CType(ctl, ComboBox).Items.Clear()
            CType(ctl, ComboBox).Text = ""
            ' Note: to add support for more controls just add more ElseIf blocks
        End If
        ' clear all child controls, if any
        Dim c As Control
        For Each c In ctl.Controls
            ResetControls(c)
        Next
    Next
End Sub
Marco Bellinaso
 
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