ConfigurationSectionCollection.Clear Method   
Definition
Important
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Clears this ConfigurationSectionCollection object.
public:
 void Clear();public void Clear();member this.Clear : unit -> unitPublic Sub Clear ()Examples
The following code example shows how to use the Clear method.
static void Clear()
{
    try
    {
        System.Configuration.Configuration config =
        ConfigurationManager.OpenExeConfiguration(
        ConfigurationUserLevel.None);
        config.Sections.Clear();
        config.Save(ConfigurationSaveMode.Full);
    }
    catch (ConfigurationErrorsException err)
    {
        Console.WriteLine(err.ToString());
    }
}
Shared Sub Clear()
    Try
        Dim config _
        As System.Configuration.Configuration = _
        ConfigurationManager.OpenExeConfiguration( _
        ConfigurationUserLevel.None)
        config.Sections.Clear()
        config.Save( _
        ConfigurationSaveMode.Full)
    Catch err As ConfigurationErrorsException
        Console.WriteLine(err.ToString())
    End Try
End Sub