System.Runtime.Serialization.Json.JsonWriter.WriteString C# (CSharp) Method

		public override void WriteString (string text)
		{
			CheckState ();

			if (state == WriteState.Start)
				throw new InvalidOperationException ("Top-level content string is not allowed in this XmlDictionaryWriter");

			if (state == WriteState.Element) {
				CloseStartElement ();
				state = WriteState.Content;
			}

			if (state == WriteState.Attribute)
				attr_value += text;
			else if (text == null) {
				no_string_yet = false;
				is_null = true;
				OutputString ("null");
			} else {
				switch (element_kinds.Peek ()) {
				case ElementType.String:
					if (no_string_yet) {
						OutputAsciiChar ('"');
						no_string_yet = false;
					}
					break;
				case ElementType.Number:
					// .NET is buggy here, it just outputs raw string, which results in invalid JSON format.
					bool isString = false;
					switch (text) {
					case "INF":
					case "-INF":
					case "NaN":
						isString = true;
						break;
					}
					if (isString) {
						element_kinds.Pop ();
						element_kinds.Push (ElementType.String);
						goto case ElementType.String;
					}
					break;
				case ElementType.Boolean:
					break;
				default:
					throw new XmlException (String.Format ("Simple content string is allowed only for string, number and boolean types and not for {0} type", element_kinds.Peek ()));
				}

				OutputString (EscapeStringLiteral (text));
			}
		}