TypeOf and CType code equivalent in C# : <p>Can someone help me the equivalent code to C#</p>

<pre><code>Public Sub ClearTextBox(ByVal root As Control)
    For Each ctrl As Control In root.Controls
        ClearTextBox(ctrl)
        If TypeOf ctrl Is TextBox Then
            CType(ctrl, TextBox).Text = String.Empty
        End If
    Next ctrl
End Sub
</code></pre>
