using?System;
using?System.Collections.Generic;
using?System.ComponentModel;
using?System.Data;
using?System.Drawing;
using?System.Linq;
using?System.Text;
using?System.Threading.Tasks;
using?System.Windows.Forms;

using?MQTTnet;
using?MQTTnet.Client;
using?MQTTnet.Implementations;
using?MQTTnet.ManagedClient;
using?MQTTnet.Protocol;


namespace?Mqttnet
{
????public?partial?class?Form1?:?Form
????{
????????private?IMqttClient?mqttClient?=?null;
????????List?payload1;
????????public?Form1（）
????????{
????????????InitializeComponent（）;
????????}

????????private?void?BtnConnect_Click（object?sender?EventArgs?e）
????????{
????????????Task.Run（async?（）?=>?{?await?ConnectMqttServerAsync（）;?}）;
????????}

????????private?void?BtnDisconnect_Click（object?sender?EventArgs?e）
????????{
????????????Task.Run（async?（）?=>?{?await?mqttClient.DisconnectAsync（）;?}）;
????????}

????????private?void?MqttClient_Connected（object?sender?EventArgs?e）
????????{
????????????Invoke（（new?Action（（）?=>
????????????????{
????????????????????txtMessage.Clear（）;
????????????????????txtMessage.AppendText（“已連接到MQTT服務器！“?+?Environment.NewLine）;
????????????????????btnConnect.Enabled?=?false;
????????????????}
????????????）））;
????????????
????????}

????????private?void?MqttClient_Disconnected（object?sender?EventArgs?e）
????????{
????????????Invoke（（new?Action（（）?=>
????????????????{
????????????????????txtMessage.Clear（）;
????????????????????txtMessage.AppendText（“已斷開MQTT連接！“?+?Environment.NewLine）;
????????????????????btnConnect.Enabled?=?true;
????????????????}
????????????）））;
????????}

????????private?async?Task?ConnectMqttServerAsync（）
????????{
????????????if?（mqttClient?==?null）
????????????{
????????????????var?factory?=?new?MqttFactory（）;
????????????????mqttClient?=?factory.CreateMqttClient（）;
????????????????mqttClient.ApplicationMessageReceived?+=?MqttClient_ApplicationMessageReceived;
????????????????mqttClient.Connected?+=?MqttClient_Connected;
????????????????mqttClient.Disconnected?+=?MqttClient_Disconnected;
????????????}
????????????try
????????????{
????????????????var?options?=?new?MqttClientOptionsBuilder（）
????????????????????.WithClientId（txtMachineID.Text）
????????????????????.WithTcpServer（“183.230.40.39“?6002）
????????????????????.WithCredentials（txtProductID.Text?txtPassword.Text）
????????????????????.WithCleanSession（）
????????????????????.Build（）;

????????????????await?mqttClient.ConnectAsync（options）;

????????????}
????????????catch?（Exception）
????????????{
????????????????MessageBox.Show（“連接失??！“）;
????????????????throw;
????????????}
????????}
????????private?async?Task?Publish（）
????????{
????????????string?topic?=?“$dp“;

????????????byte[]?variableName?=?BitConverter.GetBytes（ushort.Parse（txtVariableName.Text.Trim（）））;

????????????byte[]?data?=?BitConverter.GetBytes（float.Parse（txtSendData.Text））;

????????????if?（string.IsNullOrEmpty（

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

????..A..H.????121856??2019-07-26?15:31??Mqttnet\Mqttnet\.vs\Mqttnet\v16\.suo

?????文件??????????0??2019-07-23?13:55??Mqttnet\Mqttnet\.vs\Mqttnet\v16\Server\sqlite3\db.lock

?????文件?????786432??2019-07-26?15:31??Mqttnet\Mqttnet\.vs\Mqttnet\v16\Server\sqlite3\storage.ide

?????文件????????189??2019-07-23?13:55??Mqttnet\Mqttnet\App.config

?????文件?????169472??2018-04-28?20:24??Mqttnet\Mqttnet\bin\Debug\MQTTnet.dll

?????文件??????20992??2019-07-26?15:30??Mqttnet\Mqttnet\bin\Debug\Mqttnet.exe

?????文件????????189??2019-07-23?13:55??Mqttnet\Mqttnet\bin\Debug\Mqttnet.exe.config

?????文件??????44544??2019-07-26?15:30??Mqttnet\Mqttnet\bin\Debug\Mqttnet.pdb

?????文件???????5626??2019-07-26?15:30??Mqttnet\Mqttnet\Form1.cs

?????文件??????14572??2019-07-26?15:30??Mqttnet\Mqttnet\Form1.Designer.cs

?????文件???????5817??2019-07-26?15:30??Mqttnet\Mqttnet\Form1.resx

?????文件???????7972??2019-07-23?19:55??Mqttnet\Mqttnet\Mqttnet.csproj

?????文件???????1119??2019-07-23?13:55??Mqttnet\Mqttnet\Mqttnet.sln

?????文件???????1435??2019-07-24?10:03??Mqttnet\Mqttnet\obj\Debug\DesignTimeResolveAssemblyReferences.cache

?????文件??????20943??2019-07-23?19:55??Mqttnet\Mqttnet\obj\Debug\DesignTimeResolveAssemblyReferencesInput.cache

?????文件??????????0??2019-07-26?15:30??Mqttnet\Mqttnet\obj\Debug\Mqttnet.csproj.CopyComplete

?????文件?????????42??2019-07-26?15:30??Mqttnet\Mqttnet\obj\Debug\Mqttnet.csproj.CoreCompileInputs.cache

?????文件????????885??2019-07-26?15:30??Mqttnet\Mqttnet\obj\Debug\Mqttnet.csproj.FileListAbsolute.txt

?????文件???????1012??2019-07-26?15:30??Mqttnet\Mqttnet\obj\Debug\Mqttnet.csproj.GenerateResource.cache

?????文件??????20992??2019-07-26?15:30??Mqttnet\Mqttnet\obj\Debug\Mqttnet.exe

?????文件????????180??2019-07-26?15:30??Mqttnet\Mqttnet\obj\Debug\Mqttnet.Form1.resources

?????文件??????44544??2019-07-26?15:30??Mqttnet\Mqttnet\obj\Debug\Mqttnet.pdb

?????文件????????180??2019-07-26?15:30??Mqttnet\Mqttnet\obj\Debug\Mqttnet.Properties.Resources.resources

?????文件???????9482??2018-12-17?16:10??Mqttnet\Mqttnet\packages\Microsoft.NETCore.Platforms.1.1.0\.signature.p7s

?????文件???????9451??2016-11-05?04:57??Mqttnet\Mqttnet\packages\Microsoft.NETCore.Platforms.1.1.0\dotnet_library_license.txt

?????文件??????????0??2016-11-05?04:57??Mqttnet\Mqttnet\packages\Microsoft.NETCore.Platforms.1.1.0\lib\netstandard1.0\_._

?????文件??????17960??2019-07-23?14:00??Mqttnet\Mqttnet\packages\Microsoft.NETCore.Platforms.1.1.0\Microsoft.NETCore.Platforms.1.1.0.nupkg

?????文件??????10048??2016-11-05?04:57??Mqttnet\Mqttnet\packages\Microsoft.NETCore.Platforms.1.1.0\runtime.json

?????文件???????1617??2016-11-05?04:57??Mqttnet\Mqttnet\packages\Microsoft.NETCore.Platforms.1.1.0\ThirdPartyNotices.txt

?????文件???????9465??2018-11-16?17:04??Mqttnet\Mqttnet\packages\MQTTnet.2.7.5\.signature.p7s

............此處省略901個文件信息