System.Xml.XmlNodeReader.ResolveEntity C# (CSharp) Method

        public override void ResolveEntity() {
            if ( !IsInReadingStates() || ( nodeType != XmlNodeType.EntityReference ) )
                throw new InvalidOperationException(Res.GetString(Res.Xnr_ResolveEntity));
            bResolveEntity = true;;
        }

		public void ResolveEntityWithoutDTD ()
		{
			document.RemoveAll ();
			string xml = "<root>&ent;&ent2;</root>";
			XmlTextReader xtr = new XmlTextReader (xml, XmlNodeType.Document, null);
			xtr.Read ();
			document.AppendChild (document.ReadNode (xtr));
			xtr.Close ();
			Assert.AreEqual (xml, document.OuterXml);
			XmlNodeReader nr = new XmlNodeReader (document);
			nr.Read ();	// root
			nr.Read ();	// &ent;
			Assert.AreEqual (XmlNodeType.EntityReference, nr.NodeType);
			// ent does not exist in this dtd.
			nr.ResolveEntity ();
		}