Question

i have an if statement that neds to check if the control passed is a checkbox or a radio button

            If TypeOf (Control) Is CheckBox Then

                If count = 1 Then
                    text += Me.GetCheckBoxValueJQuerySyntax(Control.ClientID) & " + '~' + "
                Else
                    text += Me.GetCheckBoxValueJQuerySyntax(Control.ClientID) & "'~' + "
                End If

            End If
            If TypeOf (Control) Is RadioButton Then

                If CType(Control, RadioButton).GroupName <> "" Then

                    If Not Me._GroupNameArrayList.Contains(CType(Control, RadioButton).GroupName) Then

                        Me._GroupNameArrayList.Add(CType(Control, RadioButton).GroupName)

                        If count = 1 Then
                            text += Me.GetRadioValueJQuerySyntax(Control.ClientID) & " + '~' + "
                        Else
                            text += Me.GetRadioValueJQuerySyntax(Control.ClientID) & "'~' + "
                        End If
                    End If
                Else

                    If count = 1 Then
                        text += Me.GetRadioValueJQuerySyntax(Control.ClientID) & " + '~' + "
                    Else
                        text += Me.GetRadioValueJQuerySyntax(Control.ClientID) & "'~' + "
                    End If

                End If


            End If

This fails as the checkbox and redio button derive from the same class, so how would i check if the control is a checkbox or a radio button

Answer 1

You’re close; RadioButton derives from CheckBox, so they’re both technically CheckBoxes. So, in this case, you can flip the statement around and use Else If to get the results you’re looking for.

If TypeOf Control Is RadioButton Then
    ' The control is a RadioButton.
ElseIf TypeOf Control Is CheckBox Then
    ' The control is a CheckBox.
End If