我希望将第三方目标类型添加到NLog.xsd。您通常会创建一个nlog.config文件，如下所示：
<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
...>
...
<targets>
<target name="file" xsi:type="File" />
</targets>
...
</nlog>
现在我想添加一个新目标：
<targets>
<target name="file" xsi:type="File" />
<target name="file" xsi:type="MyTarget" />
</targets>
XSD验证在Visual Studio中发出警告，因为MyTarget未在任何地方定义。我尝试将MyTarget添加到NLog.xsd并引用更新的NLog.xsd，但之后我没有得到任何智能感知：
<nlog xmlns="http://my-project.com/NLog.xsd" ...>
有任何想法如何实现这个？
答案 0 :(得分：1)
自定义Syslog目标（NLog.Targets.Syslog）创建了一个扩展NLog XSD的自定义XSD。
内容：
<?xml version="1.0" encoding="utf-8"?>
<xs:schema id="NLog.Targets.Syslog"
elementFormDefault="qualified"
targetNamespace="http://www.nlog-project.org/schemas/NLog.Targets.Syslog.xsd"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:sl="http://www.nlog-project.org/schemas/NLog.Targets.Syslog.xsd"
xmlns:nlog="http://www.nlog-project.org/schemas/NLog.xsd">
<xs:import namespace="http://www.nlog-project.org/schemas/NLog.xsd" />
<xs:complexType name="Syslog">
<xs:complexContent>
<xs:extension base="nlog:Target">
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element name="name" type="xs:string" minOccurs="0" maxOccurs="1" />
<xs:element name="layout" type="nlog:Layout" minOccurs="0" maxOccurs="1" />
<xs:element name="enforcement" minOccurs="0" maxOccurs="1">
<xs:complexType>
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element name="throttling" minOccurs="0" maxOccurs="1">
<xs:complexType>
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element name="limit" type="xs:integer" minOccurs="0" maxOccurs="1" />
<xs:element name="strategy" type="xs:string" minOccurs="0" maxOccurs="1" />
<xs:element name="delay" type="xs:decimal" minOccurs="0" maxOccurs="1" />
</xs:choice>
<xs:attribute name="limit" type="xs:integer" />
<xs:attribute name="strategy" type="xs:string" />
<xs:attribute name="delay" type="xs:decimal" />
</xs:complexType>
</xs:element>
<xs:element name="messageProcessors" type="xs:integer" minOccurs="0" maxOccurs="1" />
<xs:element name="splitOnNewLine" type="xs:boolean" minOccurs="0" maxOccurs="1" />
<xs:element name="transliterate" type="xs:boolean" minOccurs="0" maxOccurs="1" />
<xs:element name="replaceInvalidCharacters" type="xs:boolean" minOccurs="0" maxOccurs="1" />
<xs:element name="truncateFieldsToMaxLength" type="xs:boolean" minOccurs="0" maxOccurs="1" />
<xs:element name="truncateMessageTo" type="xs:integer" minOccurs="0" maxOccurs="1" />
</xs:choice>
<xs:attribute name="messageProcessors" type="xs:integer" />
<xs:attribute name="splitOnNewLine" type="xs:boolean" />
<xs:attribute name="transliterate" type="xs:boolean" />
<xs:attribute name="replaceInvalidCharacters" type="xs:boolean" />
<xs:attribute name="truncateFieldsToMaxLength" type="xs:boolean" />
<xs:attribute name="truncateMessageTo" type="xs:integer" />
</xs:complexType>
</xs:element>
<xs:element name="messageCreation" minOccurs="0" maxOccurs="1">
<xs:complexType>
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element name="facility" type="xs:string" minOccurs="0" maxOccurs="1" />
<xs:element name="rfc" type="xs:string" minOccurs="0" maxOccurs="1" />
<xs:element name="rfc3164" minOccurs="0" maxOccurs="1">
<xs:complexType>
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element name="hostname" type="xs:string" minOccurs="0" maxOccurs="1" />
<xs:element name="tag" type="xs:string" minOccurs="0" maxOccurs="1" />
</xs:choice>
<xs:attribute name="hostname" type="xs:string" />
<xs:attribute name="tag" type="xs:string" />
</xs:complexType>
</xs:element>
<xs:element name="rfc5424" minOccurs="0" maxOccurs="1">
<xs:complexType>
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element name="hostname" type="nlog:Layout" minOccurs="0" maxOccurs="1" />
<xs:element name="appName" type="nlog:Layout" minOccurs="0" maxOccurs="1" />
<xs:element name="procId" type="nlog:Layout" minOccurs="0" maxOccurs="1" />
<xs:element name="msgId" type="nlog:Layout" minOccurs="0" maxOccurs="1" />
<xs:element name="structuredData" minOccurs="0" maxOccurs="1">
<xs:complexType>
<xs:choice minOccurs="0" maxOccurs="1">
<xs:element name="fromEventProperties" type="nlog:Layout" minOccurs="0" maxOccurs="1" />
<xs:element name="sdElement" minOccurs="1" maxOccurs="unbounded">
<xs:complexType>
<xs:sequence>
<xs:element name="sdParam" minOccurs="1" maxOccurs="unbounded">
<xs:complexType>
<xs:simpleContent>
<xs:extension base="xs:string">
<xs:attribute name="name" type="xs:string" use="required" />
<xs:attribute name="value" type="xs:string" use="required" />
</xs:extension>
</xs:simpleContent>
</xs:complexType>
</xs:element>
</xs:sequence>
<xs:attribute name="sdId" type="xs:string" use="required" />
</xs:complexType>
</xs:element>
</xs:choice>
</xs:complexType>
</xs:element>
<xs:element name="disableBom" type="xs:boolean" minOccurs="0" maxOccurs="1" />
</xs:choice>
<xs:attribute name="hostname" type="nlog:SimpleLayoutAttribute" />
<xs:attribute name="appName" type="nlog:SimpleLayoutAttribute" />
<xs:attribute name="procId" type="nlog:SimpleLayoutAttribute" />
<xs:attribute name="msgId" type="nlog:SimpleLayoutAttribute" />
<xs:attribute name="disableBom" type="xs:boolean" />
</xs:complexType>
</xs:element>
</xs:choice>
</xs:complexType>
</xs:element>
<xs:element name="messageSend" minOccurs="0" maxOccurs="1">
<xs:complexType>
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element name="protocol" type="xs:string" minOccurs="0" maxOccurs="1" />
<xs:element name="udp" minOccurs="0" maxOccurs="1">
<xs:complexType>
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element name="server" type="xs:string" minOccurs="1" maxOccurs="1" />
<xs:element name="port" type="xs:integer" minOccurs="0" maxOccurs="1" />
</xs:choice>
<xs:attribute name="server" type="xs:string" />
<xs:attribute name="port" type="xs:integer" />
</xs:complexType>
</xs:element>
<xs:element name="tcp" minOccurs="0" maxOccurs="1">
<xs:complexType>
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element name="server" type="xs:string" minOccurs="1" maxOccurs="1" />
<xs:element name="port" type="xs:integer" minOccurs="0" maxOccurs="1" />
<xs:element name="keepAlive" minOccurs="0" maxOccurs="1">
<xs:complexType>
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element name="enabled" type="xs:boolean" minOccurs="0" maxOccurs="1" />
<xs:element name="timeout" type="xs:integer" minOccurs="0" maxOccurs="1" />
<xs:element name="interval" type="xs:integer" minOccurs="0" maxOccurs="1" />
</xs:choice>
<xs:attribute name="enabled" type="xs:boolean" />
<xs:attribute name="timeout" type="xs:integer" />
<xs:attribute name="interval" type="xs:integer" />
</xs:complexType>
</xs:element>
<xs:element name="reconnectInterval" type="xs:integer" minOccurs="0" maxOccurs="1" />
<xs:element name="useTls" type="xs:boolean" minOccurs="0" maxOccurs="1" />
<xs:element name="framing" type="xs:string" minOccurs="0" maxOccurs="1" />
<xs:element name="dataChunkSize" type="xs:integer" minOccurs="0" maxOccurs="1" />
</xs:choice>
<xs:attribute name="server" type="xs:string" />
<xs:attribute name="port" type="xs:integer" />
<xs:attribute name="reconnectInterval" type="xs:integer" />
<xs:attribute name="useTls" type="xs:boolean" />
<xs:attribute name="framing" type="xs:string" />
<xs:attribute name="dataChunkSize" type="xs:integer" />
</xs:complexType>
</xs:element>
</xs:choice>
</xs:complexType>
</xs:element>
</xs:choice>
<xs:attribute name="name" type="xs:string" />
<xs:attribute name="layout" type="nlog:SimpleLayoutAttribute" />
</xs:extension>
</xs:complexContent>
</xs:complexType>
</xs:schema>
用法:(此内容发布于http://nlog-project.org/）
<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:sl="http://www.nlog-project.org/schemas/NLog.Targets.Syslog.xsd">
和
<target xsi:type="sl:Syslog" name="syslog3164-tgt">
<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
另见https://github.com/NLog/NLog.github.io/pull/56
更新：Visual Studio也需要这个：
<nlog xsi:schemaLocation="http://www.nlog-project.org/schemas/NLog.Targets.Syslog.xsd http://www.nlog-project.org/schemas/NLog.Targets.Syslog.xsd" .. >