Gets and sets the ProxyPassword property.
            Used in conjunction with the ProxyUsername
            property to authenticate requests with the
            specified Proxy server.
            
 Declaration Syntax
 Declaration Syntax| C# | 
[ObsoleteAttribute("Use ProxyCredentials instead")] public string ProxyPassword { get; set; }
 Remarks
 Remarks
            If this property isn't set, String.Empty is used as
            the proxy password. This property isn't
            used if ProxyUsername is null or empty.