C# JsonTextWriter.WriteValue方法代码示例

        private static string toJSON(SqlDataReader rdr)
        {
            StringBuilder sb = new StringBuilder();
            StringWriter sw = new StringWriter(sb);
            JsonWriter jsonWriter = new JsonTextWriter(sw);
            jsonWriter.WriteStartArray();
            while (rdr.Read())
            {
                int fieldcount = rdr.FieldCount; // count how many columns are in the row
                object[] values = new object[fieldcount]; // storage for column values
                rdr.GetValues(values); // extract the values in each column
                jsonWriter.WriteStartObject();
                for (int index = 0; index < fieldcount; index++)
                {

                    string colName = rdr.GetName(index);
                    object value = values[index];
                    jsonWriter.WritePropertyName(colName);

                    if (value == DBNull.Value)
                        value = "";
                    else if (colName.Contains("date") && !colName.Contains("by"))
                        value = String.Format("{0:MM/dd/yyyy HH:mm tt}", value);

                    jsonWriter.WriteValue(value);
                }
                jsonWriter.WriteEndObject();
            }
            jsonWriter.WriteEndArray();

            return sb.ToString();
        }

        protected void btnSend_Click(object sender, EventArgs e)
        {
            StringBuilder sb = new StringBuilder();
            StringWriter sw = new StringWriter(sb);
            JsonWriter jsonWriter = new JsonTextWriter(sw);

            jsonWriter.Formatting = Formatting.Indented;
            jsonWriter.WriteStartObject();
            jsonWriter.WritePropertyName("name");
            jsonWriter.WriteValue(txtName.Text);

            jsonWriter.WritePropertyName("description");
            jsonWriter.WriteValue(txtDesc.Text);

            jsonWriter.WritePropertyName("priority");
            jsonWriter.WriteValue((dpdPri.Text).ToUpper());

            jsonWriter.WriteEndObject();
            string output = sw.ToString();
            jsonWriter.Close();
            sw.Close();

            //string[] args = new string[3];
            //args[0] = txtName.Text;
            //args[1] = txtDesc.Text;
            //args[2] = txtPri.Text;
            //string message = string.Join(" ", args);
            byte[] body = System.Text.Encoding.UTF8.GetBytes(output);
            producer.SendMessage(body);
        }

        public static void WriteTo(this Item item, JsonTextWriter writer)
        {
            writer.WriteStartObject();

            writer.WritePropertyName(nameof(item.Format));
            writer.WriteValue(Enum.GetName(typeof(SecsFormat), item.Format));
            if (item.Format == SecsFormat.List)
            {
                writer.WritePropertyName(nameof(item.Items));
                writer.WriteStartArray();
                foreach (var subitem in item.Items)
                    subitem.WriteTo(writer);
                writer.WriteEndArray();
            }
            else
            {
                writer.WritePropertyName(nameof(item.Values));

                if (item.Format == SecsFormat.ASCII || item.Format == SecsFormat.JIS8)
                {
                    writer.WriteValue(item.GetValue<string>());
                }
                else
                {
                    writer.WriteStartArray();
                    foreach (var value in item.Values)
                        writer.WriteValue(value);
                    writer.WriteEndArray();
                }
            }
            writer.WriteEndObject();
        }

        /// <summary>
        /// Convert parameter list to json object
        /// </summary>
        public static string parameterFieldMapJson(parameters parms, string ProjectID, string QueryID)
        {
            StringWriter sw = new StringWriter();
            JsonTextWriter json = new JsonTextWriter(sw);

            json.WriteStartObject();
            json.WritePropertyName("results");
            json.WriteStartArray();
            json.WriteStartObject();
            // ProjectID and QueryID
            json.WritePropertyName("ProjectID");
            json.WriteValue(ProjectID);
            json.WritePropertyName("QueryID");
            json.WriteValue(QueryID);

            json.WritePropertyName("parameters");
            json.WriteRawValue(JsonConvert.SerializeObject(parms));

            json.WriteEndObject();
            json.WriteEndArray();
            json.WriteEndObject();

            json.Flush();
            sw.Flush();

            return sw.ToString();
        }

 internal string ToJson()
 {
     StringBuilder sb = new StringBuilder();
     using (StringWriter sw = new StringWriter(sb))
     {
         using (JsonWriter jw = new JsonTextWriter(sw))
         {
             jw.WriteStartObject();
             if (!string.IsNullOrEmpty(AreaType))
             {
                 jw.WritePropertyName("areaType");
                 jw.WriteValue(AreaType);
             }
             if (!string.IsNullOrEmpty(BufferUnits))
             {
                 jw.WritePropertyName("bufferUnits");
                 jw.WriteValue(BufferUnits);
             }
             if (BufferRadii != null && BufferRadii.Count > 0)
             {
                 jw.WritePropertyName("Drives");
                 jw.WriteStartArray();
                 foreach (var radius in BufferRadii)
                     jw.WriteValue(radius);
                 jw.WriteEndArray();
             }
             jw.WriteEndObject();
         }
     }
     return sb.ToString();
 }

        public string Serialize()
        {
            var sb = new StringBuilder();
            var sw = new StringWriter(sb);

            using (JsonWriter jsonWriter = new JsonTextWriter(sw))
            {
                jsonWriter.Formatting = Formatting.Indented;

                jsonWriter.WriteStartObject();
                jsonWriter.WritePropertyName("public");
                jsonWriter.WriteValue(true);

                jsonWriter.WritePropertyName("files");

                jsonWriter.WriteStartObject();
                jsonWriter.WritePropertyName(File);

                jsonWriter.WriteStartObject();
                jsonWriter.WritePropertyName("content");
                jsonWriter.WriteValue(Code);
                jsonWriter.WriteEndObject();

                jsonWriter.WriteEndObject();

                jsonWriter.WriteEndObject();
            }

            return sb.ToString();
        }

        public override bool Execute()
        {
            if (Items.Length == 0)
                throw new ArgumentException("The provided items contained zero entries.");

            if (!Directory.Exists(Path.GetDirectoryName(JsonFileName)))
                Directory.CreateDirectory(Path.GetDirectoryName(JsonFileName));

            JsonSerializer jsonSerializer = new JsonSerializer();
            using (StreamWriter streamWriter = new StreamWriter(JsonFileName))
            {
                using (JsonTextWriter jsonWriter = new JsonTextWriter(streamWriter))
                {
                    jsonWriter.Formatting = Formatting.Indented;

                    if (Items.Length > 1)
                        jsonWriter.WriteStartArray();

                    foreach (ITaskItem item in Items)
                    {
                        var customMd = item.CloneCustomMetadata();
                        jsonWriter.WriteStartObject();
                        foreach (var key in customMd.Keys)
                        {
                            var mdString = key.ToString();
                            var mdValue = customMd[key].ToString();

                            jsonWriter.WritePropertyName(mdString);

                            // if the value is surrounded in square brackets it's meant to be an array.
                            // split the value into its respective chunks and write it into a JSON array.
                            if (mdValue.Length > 0 && mdValue[0] == '[' && mdValue[mdValue.Length - 1] == ']')
                            {
                                mdValue = mdValue.Substring(1, mdValue.Length - 2);
                                jsonWriter.WriteStartArray();

                                var parts = mdValue.Split(new char[] { ';' }, StringSplitOptions.RemoveEmptyEntries);
                                foreach (var part in parts)
                                    jsonWriter.WriteValue(part);

                                jsonWriter.WriteEndArray();
                            }
                            else
                            {
                                jsonWriter.WriteValue(mdValue);
                            }
                        }

                        jsonWriter.WriteEndObject();
                    }

                    if (Items.Length > 1)
                        jsonWriter.WriteEndArray();

                    Log.LogMessage(MessageImportance.High, "Writing {0}.", JsonFileName);
                }
            }

            return true;
        }

        //https://webServiceURL/version/devices/deviceLibraryIdentifier/registrations/passTypeIdentifier?passesUpdatedSince=tag
        public HttpResponseMessage Get(string version, string deviceLibraryIdentifier, string passTypeIdentifier, HttpRequestMessage request)
        {
            //List<string> updatedSerialNumbers = new List<string>();
            //updatedSerialNumbers.Add("121212111");

            //Dictionary<string, string> outputDictionary = new Dictionary<string, string>();
            //outputDictionary.Add("lastUpdated", "21/07/2012");
            //outputDictionary.Add("serialNumbers", JsonConvert.SerializeObject(updatedSerialNumbers));

            var response = new HttpResponseMessage(HttpStatusCode.OK);
            //string json = JsonConvert.SerializeObject(outputDictionary);


            StringBuilder sb = new StringBuilder();
            StringWriter sw = new StringWriter(sb);

            using (JsonWriter writer = new JsonTextWriter(sw))
            {
                writer.Formatting = Formatting.Indented;

                writer.WriteStartObject();
                writer.WritePropertyName("lastUpdated");
                writer.WriteValue("21/07/2012");
                writer.WritePropertyName("serialNumbers");
                writer.WriteStartArray();
                writer.WriteValue("121212111");
                writer.WriteEndArray();
                writer.WriteEndObject();
            }

            response.Content = new StringContent(sb.ToString(), Encoding.UTF8, "application/json");

            return response;
        }

		//JsonWriter writer = new JsonTextWriter();
		protected static string BasicRequest(int requestID, string method, string sessionID, params string[] parameters)
		{
			StringBuilder sb = new StringBuilder();
			StringWriter sw = new StringWriter(sb);

			using (JsonWriter writer = new JsonTextWriter(sw))
			{
				writer.Formatting = Formatting.Indented;

				writer.WriteStartObject();
				writer.WritePropertyName("jsonrpc");
				writer.WriteValue("2.0");
				writer.WritePropertyName("id");
				writer.WriteValue(requestID);
				writer.WritePropertyName("method");
				writer.WriteValue(method);
				writer.WritePropertyName("params");
				writer.WriteStartArray();
				writer.WriteValue(sessionID);
				foreach (var p in parameters)
					writer.WriteValue(p);
				writer.WriteEndArray();
				writer.WriteEndObject();
                return sb.ToString();
				//return sb.ToString().Replace("\n","");
			}
		}

 static void Main(string[] args)
 {
     StringBuilder sb = new StringBuilder();
     StringWriter sw = new StringWriter(sb);
     using (JsonWriter writer = new JsonTextWriter(sw))
     {
         writer.Formatting = Newtonsoft.Json.Formatting.Indented;
         writer.WriteStartObject();
         writer.WritePropertyName("CPU");
         writer.WriteValue("Intel");
         writer.WritePropertyName("PSU");
         writer.WriteValue("500W");
         writer.WritePropertyName("Drives");
         writer.WriteStartArray();
         writer.WriteValue("DVD read/writer");
         writer.WriteComment("(broken)");
         writer.WriteValue("500 gigabyte hard drive");
         writer.WriteValue("200 gigabype hard drive");
         writer.WriteEnd();
         writer.WriteEndObject();
     }
     File.WriteAllText(Environment.CurrentDirectory + "/rhcdata.json", sw.ToString());
     Console.WriteLine(sw.ToString());
     Console.ReadLine();
 }

 public void ProcessRequest(HttpContext context)
 {
     string reVal = string.Empty;
     context.Response.ContentType = "text/plain";
     IEnumerable<ADM_USER> list = from m in etMgr.ADM_USER.OfType<ADM_USER>()
                                  select m;
     StringBuilder sb = new StringBuilder();
     StringWriter sw = new StringWriter(sb);
     using (JsonWriter jsonWriter = new JsonTextWriter(sw))
     {
         jsonWriter.Formatting = Formatting.Indented;
         jsonWriter.WriteStartArray();
         foreach (ADM_USER m in list)
         {
             jsonWriter.WriteStartObject();
             jsonWriter.WritePropertyName("name");
             jsonWriter.WriteValue(string.IsNullOrEmpty(m.REAL_NAME) ? m.USERNAME : m.REAL_NAME);
             jsonWriter.WritePropertyName("id");
             jsonWriter.WriteValue(m.USER_ID);
             jsonWriter.WriteEndObject();
         }
         jsonWriter.WriteEnd();
     }
     reVal = sb.ToString();
     context.Response.Write(reVal);
 }

    public void ValueFormatting()
    {
      StringBuilder sb = new StringBuilder();
      StringWriter sw = new StringWriter(sb);

      using (JsonWriter jsonWriter = new JsonTextWriter(sw))
      {
        jsonWriter.WriteStartArray();
        jsonWriter.WriteValue('@');
        jsonWriter.WriteValue("\r\n\t\f\b?{\\r\\n\"\'");
        jsonWriter.WriteValue(true);
        jsonWriter.WriteValue(10);
        jsonWriter.WriteValue(10.99);
        jsonWriter.WriteValue(0.99);
        jsonWriter.WriteValue(0.000000000000000001d);
        jsonWriter.WriteValue(0.000000000000000001m);
        jsonWriter.WriteValue(null);
        jsonWriter.WriteValue("This is a string.");
        jsonWriter.WriteNull();
        jsonWriter.WriteUndefined();
        jsonWriter.WriteEndArray();
      }

      string expected = @"[""@"",""\r\n\t\f\b?{\\r\\n\""'"",true,10,10.99,0.99,1E-18,0.000000000000000001,"""",""This is a string."",null,undefined]";
      string result = sb.ToString();

      Console.WriteLine("ValueFormatting");
      Console.WriteLine(result);

      Assert.AreEqual(expected, result);
    }

 internal string ToJson()
 {
     StringBuilder sb = new StringBuilder();
     using (StringWriter sw = new StringWriter(sb))
     {
         using (JsonWriter jw = new JsonTextWriter(sw))
         {
             jw.WriteStartObject();
             if (GeometryType == ESRI.ArcGIS.Client.Tasks.GeometryType.Point || GeometryType == ESRI.ArcGIS.Client.Tasks.GeometryType.Polygon)
             {
                 jw.WritePropertyName("geometryType");
                 jw.WriteValue(string.Format("esriGeometry{0}", GeometryType));
             }
             jw.WritePropertyName("spatialRel");
             jw.WriteValue(SpatialRelationship.ToString());
             if (!string.IsNullOrEmpty(Where))
             {
                 jw.WritePropertyName("where");
                 jw.WriteValue(Where);
             }
             jw.WriteEndObject();
         }
     }
     return sb.ToString();
 }

 public void ToJson(JsonTextWriter writer)
 {
     writer.WritePropertyName("direction");
     writer.WriteValue(this.Direction);
     writer.WritePropertyName("orientation");
     writer.WriteValue(this.Orientation);
     writer.WritePropertyName("filepath");
     writer.WriteValue( new Uri(this.Shred.Filepath).AbsoluteUri);
 }

 //-----------------------------------------------------------------------------------------------------
 public void Join(UserManager.UserClass _user)
 {
     if (_user.Is_Bot != 1)
     {
         _user.sep.Send("[" + (int)ServerOpcode.enter_room + "]");
         StringBuilder sb = new StringBuilder();
         StringWriter sw = new StringWriter(sb);
         using (JsonWriter writer = new JsonTextWriter(sw))
         {
             writer.Formatting = Formatting.None;
             writer.WriteStartArray();
             writer.WriteValue((int)ServerOpcode.room_state);
             writer.WriteStartArray();
             writer.WriteValue(_channel_id);
             writer.WriteValue(_channel_name);
             writer.WriteValue(_channel_password);
             writer.WriteValue(_channel_maxplayers);
             writer.WriteValue(_channel_gamemode);
             writer.WriteValue(_channel_map);
             writer.WriteValue(_channel_avatar_on);
             writer.WriteValue(_channel_max_wind);
             writer.WriteValue(_channel_gp_rate);
             writer.WriteValue(_unk1);
             writer.WriteValue(_unk2);
             writer.WriteValue(_unk3);
             writer.WriteValue(_unk4);
             writer.WriteEndArray();
             writer.WriteEndArray();
         }
         _user.sep.Send(sb.ToString());
     }
     _user.channel = _channel_id;
     RoomPlayer(_user);
 }