System.Xml.DTDReader.AppendValueChar C# (CSharp) Method

		private void AppendValueChar (int ch)
		{
			//See http://www.faqs.org/rfcs/rfc2781.html for used algorithm
			if (ch < 0x10000) {
				valueBuffer.Append ((char) ch);
				return;
			}
			if (ch > 0x10FFFF)
				throw new XmlException ("The numeric entity value is too large", null, LineNumber, LinePosition);
			else
			{
				int utag = ch - 0x10000;
				valueBuffer.Append((char) ((utag >> 10) + 0xD800));
				valueBuffer.Append((char) ((utag & 0x3FF) + 0xDC00));
			}
		}