| <html><head><meta http-equiv="X-UA-Compatible" content="IE=edge" /><link rel="shortcut icon" href="../icons/favicon.ico" /><link rel="stylesheet" type="text/css" href="../styles/branding.css" /><link rel="stylesheet" type="text/css" href="../styles/branding-en-US.css" /><script type="text/javascript" src="../scripts/branding.js"> </script><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>MqttClient.Publish Method (String, Byte[], Byte, Boolean)</title><meta name="Language" content="en-us" /><meta name="Microsoft.Help.Id" content="M:uPLibrary.Networking.M2Mqtt.MqttClient.Publish(System.String,System.Byte[],System.Byte,System.Boolean)" /><meta name="Description" content="Publish a message asynchronously" /><meta name="Microsoft.Help.ContentType" content="Reference" /><meta name="BrandingAware" content="true" /><meta name="container" content="uPLibrary.Networking.M2Mqtt" /><meta name="file" content="1fc2e16b-b250-9c5a-fda8-61d4efabca18" /><meta name="guid" content="1fc2e16b-b250-9c5a-fda8-61d4efabca18" /><link rel="stylesheet" type="text/css" href="../styles/branding-Website.css" /><script type="text/javascript" src="../scripts/jquery-1.11.0.min.js"></script><script type="text/javascript" src="../scripts/branding-Website.js"></script></head><body onload="OnLoad('cs')"><input type="hidden" id="userDataCache" class="userDataStyle" /><div class="pageHeader" id="PageHeader">A Sandcastle Documented Class Library<form id="SearchForm" method="get" action="#" onsubmit="javascript:TransferToSearchPage(); return false;"><input id="SearchTextBox" type="text" maxlength="200" /><button id="SearchButton" type="submit"></button></form></div><div class="pageBody"><div class="leftNav" id="leftNav"><div id="tocNav"><div class="toclevel0" data-toclevel="0"><a class="tocCollapsed" onclick="javascript: Toggle(this);" href="#!" /><a data-tochassubtree="true" href="4158a883-de72-1ec4-2209-632a86aebd74.htm" title="A Sandcastle Documented Class Library" tocid="roottoc">A Sandcastle Documented Class Library</a></div><div class="toclevel0" data-toclevel="0"><a class="tocCollapsed" onclick="javascript: Toggle(this);" href="#!" /><a data-tochassubtree="true" href="4158a883-de72-1ec4-2209-632a86aebd74.htm" title="uPLibrary.Networking.M2Mqtt" tocid="4158a883-de72-1ec4-2209-632a86aebd74">uPLibrary.Networking.M2Mqtt</a></div><div class="toclevel0" data-toclevel="0"><a class="tocCollapsed" onclick="javascript: Toggle(this);" href="#!" /><a data-tochassubtree="true" href="1c43333f-2896-2b9e-5895-dc5157db58a3.htm" title="MqttClient Class" tocid="1c43333f-2896-2b9e-5895-dc5157db58a3">MqttClient Class</a></div><div class="toclevel0" data-toclevel="0"><a class="tocCollapsed" onclick="javascript: Toggle(this);" href="#!" /><a data-tochassubtree="true" href="3beb36e2-dc9d-80e6-65a0-2d98ae7ed821.htm" title="MqttClient Methods" tocid="3beb36e2-dc9d-80e6-65a0-2d98ae7ed821">MqttClient Methods</a></div><div class="toclevel1" data-toclevel="1" data-childrenloaded="true"><a class="tocExpanded" onclick="javascript: Toggle(this);" href="#!" /><a data-tochassubtree="true" href="3c52c514-301f-5640-acf1-c6678953cc33.htm" title="Publish Method " tocid="3c52c514-301f-5640-acf1-c6678953cc33">Publish Method </a></div><div class="toclevel2" data-toclevel="2"><a data-tochassubtree="false" href="d1876f15-1f6c-1275-7197-6709dabddfd0.htm" title="Publish Method (String, Byte[])" tocid="d1876f15-1f6c-1275-7197-6709dabddfd0">Publish Method (String, Byte[])</a></div><div class="toclevel2 current" data-toclevel="2"><a data-tochassubtree="false" href="1fc2e16b-b250-9c5a-fda8-61d4efabca18.htm" title="Publish Method (String, Byte[], Byte, Boolean)" tocid="1fc2e16b-b250-9c5a-fda8-61d4efabca18">Publish Method (String, Byte[], Byte, Boolean)</a></div></div><div id="tocResizableEW" onmousedown="OnMouseDown(event);"></div><div id="TocResize" class="tocResize"><img id="ResizeImageIncrease" src="../icons/TocOpen.gif" onclick="OnIncreaseToc()" alt="Click or drag to resize" title="Click or drag to resize" /><img id="ResizeImageReset" src="../icons/TocClose.gif" style="display:none" onclick="OnResetToc()" alt="Click or drag to resize" title="Click or drag to resize" /></div></div><div class="topicContent" id="TopicContent"><table class="titleTable"><tr><td class="titleColumn">MqttClient<span id="LSTC34903D4_0"></span><script type="text/javascript">AddLanguageSpecificTextSet("LSTC34903D4_0?cpp=::|nu=.");</script>Publish Method (String, <span id="LSTC34903D4_1"></span><script type="text/javascript">AddLanguageSpecificTextSet("LSTC34903D4_1?cpp=array<");</script>Byte<span id="LSTC34903D4_2"></span><script type="text/javascript">AddLanguageSpecificTextSet("LSTC34903D4_2?cpp=>|vb=()|nu=[]");</script>, Byte, Boolean)</td></tr></table><span class="introStyle"></span><div class="summary"> | |
| Publish a message asynchronously | |
| </div><p> </p><strong>Namespace:</strong> <a href="4158a883-de72-1ec4-2209-632a86aebd74.htm">uPLibrary.Networking.M2Mqtt</a><br /><strong>Assembly:</strong> M2Mqtt.Net (in M2Mqtt.Net.dll) Version: 4.3.0.0 (4.3.0.0)<div class="collapsibleAreaRegion"><span class="collapsibleRegionTitle" onclick="SectionExpandCollapse('ID1RB')" onkeypress="SectionExpandCollapse_CheckKey('ID1RB', event)" tabindex="0"><img id="ID1RBToggle" class="collapseToggle" src="../icons/SectionExpanded.png" />Syntax</span></div><div id="ID1RBSection" class="collapsibleSection"><div class="codeSnippetContainer"><div class="codeSnippetContainerTabs"><div id="ID0EDCA_tab1" class="codeSnippetContainerTab"><a href="#" onclick="javascript:ChangeTab('ID0EDCA','cs','1','4');return false;">C#</a></div><div id="ID0EDCA_tab2" class="codeSnippetContainerTab"><a href="#" onclick="javascript:ChangeTab('ID0EDCA','vb','2','4');return false;">VB</a></div><div id="ID0EDCA_tab3" class="codeSnippetContainerTab"><a href="#" onclick="javascript:ChangeTab('ID0EDCA','cpp','3','4');return false;">C++</a></div><div id="ID0EDCA_tab4" class="codeSnippetContainerTab"><a href="#" onclick="javascript:ChangeTab('ID0EDCA','fs','4','4');return false;">F#</a></div></div><div class="codeSnippetContainerCodeContainer"><div class="codeSnippetToolBar"><div class="codeSnippetToolBarText"><a id="ID0EDCA_copyCode" href="#" onclick="javascript:CopyToClipboard('ID0EDCA');return false;" title="Copy">Copy</a></div></div><div id="ID0EDCA_code_Div1" class="codeSnippetContainerCode" style="display: block"><pre xml:space="preserve"><span class="keyword">public</span> <span class="identifier">ushort</span> <span class="identifier">Publish</span>( | |
| <span class="identifier">string</span> <span class="parameter">topic</span>, | |
| <span class="identifier">byte</span>[] <span class="parameter">message</span>, | |
| <span class="identifier">byte</span> <span class="parameter">qosLevel</span>, | |
| <span class="identifier">bool</span> <span class="parameter">retain</span> | |
| )</pre></div><div id="ID0EDCA_code_Div2" class="codeSnippetContainerCode" style="display: none"><pre xml:space="preserve"><span class="keyword">Public</span> <span class="keyword">Function</span> <span class="identifier">Publish</span> ( | |
| <span class="parameter">topic</span> <span class="keyword">As</span> <span class="identifier">String</span>, | |
| <span class="parameter">message</span> <span class="keyword">As</span> <span class="identifier">Byte</span>(), | |
| <span class="parameter">qosLevel</span> <span class="keyword">As</span> <span class="identifier">Byte</span>, | |
| <span class="parameter">retain</span> <span class="keyword">As</span> <span class="identifier">Boolean</span> | |
| ) <span class="keyword">As</span> <span class="identifier">UShort</span></pre></div><div id="ID0EDCA_code_Div3" class="codeSnippetContainerCode" style="display: none"><pre xml:space="preserve"><span class="keyword">public</span>: | |
| <span class="identifier">unsigned short</span> <span class="identifier">Publish</span>( | |
| <span class="identifier">String</span>^ <span class="parameter">topic</span>, | |
| <span class="keyword">array</span><<span class="identifier">unsigned char</span>>^ <span class="parameter">message</span>, | |
| <span class="identifier">unsigned char</span> <span class="parameter">qosLevel</span>, | |
| <span class="identifier">bool</span> <span class="parameter">retain</span> | |
| )</pre></div><div id="ID0EDCA_code_Div4" class="codeSnippetContainerCode" style="display: none"><pre xml:space="preserve"><span class="keyword">member</span> <span class="identifier">Publish</span> : | |
| <span class="parameter">topic</span> : <span class="identifier">string</span> * | |
| <span class="parameter">message</span> : <span class="identifier">byte</span>[] * | |
| <span class="parameter">qosLevel</span> : <span class="identifier">byte</span> * | |
| <span class="parameter">retain</span> : <span class="identifier">bool</span> <span class="keyword">-></span> <span class="identifier">uint16</span> | |
| </pre></div></div></div><script type="text/javascript">AddLanguageTabSet("ID0EDCA");</script><h4 class="subHeading">Parameters</h4><dl><dt><span class="parameter">topic</span></dt><dd>Type: <a href="http://msdn2.microsoft.com/en-us/library/s1wwdcbf" target="_blank">System<span id="LSTC34903D4_3"></span><script type="text/javascript">AddLanguageSpecificTextSet("LSTC34903D4_3?cs=.|vb=.|cpp=::|nu=.|fs=.");</script>String</a><br />Message topic</dd><dt><span class="parameter">message</span></dt><dd>Type: <span id="LSTC34903D4_4"></span><script type="text/javascript">AddLanguageSpecificTextSet("LSTC34903D4_4?cpp=array<");</script><a href="http://msdn2.microsoft.com/en-us/library/yyb1w04y" target="_blank">System<span id="LSTC34903D4_5"></span><script type="text/javascript">AddLanguageSpecificTextSet("LSTC34903D4_5?cs=.|vb=.|cpp=::|nu=.|fs=.");</script>Byte</a><span id="LSTC34903D4_6"></span><script type="text/javascript">AddLanguageSpecificTextSet("LSTC34903D4_6?cpp=>|vb=()|nu=[]");</script><br />Message data (payload)</dd><dt><span class="parameter">qosLevel</span></dt><dd>Type: <a href="http://msdn2.microsoft.com/en-us/library/yyb1w04y" target="_blank">System<span id="LSTC34903D4_7"></span><script type="text/javascript">AddLanguageSpecificTextSet("LSTC34903D4_7?cs=.|vb=.|cpp=::|nu=.|fs=.");</script>Byte</a><br />QoS Level</dd><dt><span class="parameter">retain</span></dt><dd>Type: <a href="http://msdn2.microsoft.com/en-us/library/a28wyd50" target="_blank">System<span id="LSTC34903D4_8"></span><script type="text/javascript">AddLanguageSpecificTextSet("LSTC34903D4_8?cs=.|vb=.|cpp=::|nu=.|fs=.");</script>Boolean</a><br />Retain flag</dd></dl><h4 class="subHeading">Return Value</h4>Type: <a href="http://msdn2.microsoft.com/en-us/library/s6eyk10z" target="_blank">UInt16</a><br />Message Id related to PUBLISH message</div><div class="collapsibleAreaRegion" id="seeAlsoSection"><span class="collapsibleRegionTitle" onclick="SectionExpandCollapse('ID2RB')" onkeypress="SectionExpandCollapse_CheckKey('ID2RB', event)" tabindex="0"><img id="ID2RBToggle" class="collapseToggle" src="../icons/SectionExpanded.png" />See Also</span></div><div id="ID2RBSection" class="collapsibleSection"><h4 class="subHeading">Reference</h4><div class="seeAlsoStyle"><a href="1c43333f-2896-2b9e-5895-dc5157db58a3.htm">MqttClient Class</a></div><div class="seeAlsoStyle"><a href="3c52c514-301f-5640-acf1-c6678953cc33.htm">Publish Overload</a></div><div class="seeAlsoStyle"><a href="4158a883-de72-1ec4-2209-632a86aebd74.htm">uPLibrary.Networking.M2Mqtt Namespace</a></div></div></div></div><div id="pageFooter" class="pageFooter"> </div></body></html> |