turn off auto-collapsing vb.net visible studio?

the auto-collapse underline code properties neat after you've got your properties worked out, nonetheless while you're still modifying i underline unequivocally annoying.

how invalidate it?

(i'm vs2008 creates difference)

edit: i'm articulate ability window... i'm articulate properties code.

private _firstname string
public ability firstname() twine implements iperson.firstname
    get
        relapse _firstname
    finish get
    set(byval value string)
        _firstname = value
    finish set
end property

displays

public ability firstname()...