Dynamic Properties for a User Control

Hello,

I have a problem while reading Dynamic properties in a User Control.

Is it possible that at design-time when I put the control on a form to get data from app.config file or it's possible only at run-time? I want to simulate the WriteProperty and ReadProperty from VB6. With forms works, but for User Controls doesn't.

The next code gives an error: "The key... does not exist in configuration file"

Dim cfgReader As System.Configuration.AppSettingsReader = New System.Configuration.AppSettingsReader()

Me.NValue = CType(cfgReader.GetValue("JN.NValue", GetType(System.String)), String)


And this one does nothing and JValue is empty.

Dim config As Configuration.ConfigurationSettings
Me.JValue = config.AppSettings("JN.JValue")

Thank You,
Ciprian