VB Clearing Controls

Hi
I create Controls in a Tabpage called extraTabPage

dim txt as new system.windows.forms.TextBox
dim pkr as new system.windows.forms.DateTimePicker
dim btn as new system.windows.forms.Button

extratabpage.Control.Add(txt)
extratabpage.Control.Add(pkr)

I add about 3 or 4 of each setting height and position as I go

Then create a button

extratabpage.Control.Add(btn)
btn.text = "Clear Entries"
add Handler btn.click, address of ClearEntries

End sub

Private Sub ClearEntries(ByVal eventsender As System.Object, ByVal eventargs As System.EventArgs)
            Dim ctrl As Control
            For Each ctrl In mExtraTabPage.Controls
                If (ctrl.GetType() IsNot CType(ctrl, Button)) Then
                    If (ctrl.GetType() Is CType(ctrl, TextBox)) Then
                        Dim txt As TextBox = CType(ctrl, TextBox)
                        txt.Text = ""
                    End If
                    If (ctrl.GetType() Is CType(ctrl, DateTimePicker)) Then
                        Dim Cal As DateTimePicker = CType(ctrl, DateTimePicker)
                        Cal.Format = DateTimePickerFormat.Custom
                        Cal.CustomFormat = " "
                    End If
                End If
            Next
        End Sub

when the clearentries is called I get an error

Unable to cast object of type system.windows.forms.button to type system.windows.forms.TextBox

Thanks
KevinfeeningAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

rspahitzCommented:
>If (ctrl.GetType() IsNot CType(ctrl, Button)) Then

In the past I would use TypeOf like this:
If Not TypeOf(ctrl) Is Button Then

Not sure if this still works...
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
KevinfeeningAuthor Commented:
worked
had to use in body of code as well as
if typeof(ctrl) is textbox then to clear the text box
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Visual Basic.NET

From novice to tech pro — start learning today.