why cant I find a raddropdown using FindControl?

[john]

I try to get a reference to a Rad combobox inside a Formview control and always get the error that the object  reference is not set
this is what I use:

Dim SelectAdSubCat As Telerik.Web.UI.RadComboBox = CType(formview1.FindControl("selectadsubcat"), Telerik.Web.UI.RadComboBox)

I am probably doing something wrong but what?

thank you

[Veselin Vasilev]

Hello john,

You can check this code library: Using RadComboBox in FormView

Regards,
Veskoni
the Telerik team

Check out Telerik Trainer, the state of the art learning tool for Telerik products.

[john]

which library should I import cause neither the RadComboBox nor the RadComboBoxItem names are recognized in my code

as in this:

Dim

firstItem As RadComboBoxItem = New RadComboBoxItem("Select an Ad Heading", "0")

SubcatSelect.Items.Insert(0, firstItem)

or this dim rad as radcombobox

do not work for me!