[英]how to Check if a XML child element exists with Linq to XML
如何使用linq to xml檢查IncomingConfig
元素是否存在?
<?xml version="1.0" encoding="utf-8"?>
<settings>
<IncomingConfig>
<ip>10.100.101.18</ip>
<port>5060</port>
</IncomingConfig>
<Device>
<username>tarek</username>
<AgentName>tarek</AgentName>
<password>ffff</password>
</Device>
<Device>
<username>adf</username>
<AgentName>adf</AgentName>
<password>fadsf</password>
</Device>
</settings>
bool b = xdocument.Descendants("IncomingConfig").Any();
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