C#通过xml循环以获取特定子节点的innertext值
我的XML文档如下所示:C#通过xml循环以获取特定子节点的innertext值,c#,xml,C#,Xml,我的XML文档如下所示: <Runs> <Run> <LotInfo> <Column name="Entity">HST123,</Column> <Column name="Product">XXX123</Column> <Column name="WSOp">1234</Column> <Column name="Route">V23
<Runs>
<Run>
<LotInfo>
<Column name="Entity">HST123,</Column>
<Column name="Product">XXX123</Column>
<Column name="WSOp">1234</Column>
<Column name="Route">V234</Column>
<Column name="Recipe" />
<Column name="LotNumber">K898722</Column>
<Column name="RunStartTime">2014-05-20T17:43:11.8872105</Column>
</LotInfo>
<Operations>
<Operation type="INTRODUCTION">
<Column name="Size">1490</Column>
<Column name="TimeStamp">2014-05-20T17:43:11.8872105</Column>
<Column name="Operator">nismail9</Column>
<Column name="Description">
<![CDATA[ Unknown ]]>
</Column>
<Column name="Status">Success</Column>
</Operation>
<Operation type="RNUCHECK">
<Column name="Size">1490</Column>
<Column name="TimeStamp">2014-05-20T17:43:15.3091731</Column>
<Column name="Operator">nismail9</Column>
<Column name="Description">
<![CDATA[ ]]>
</Column>
<Column name="Status">True</Column>
</Operation>
<Operations>
<Operation type="INTRODUCTION">
<Column name="Size">1490</Column>
<Column name="TimeStamp">2014-05-20T17:58:47.0830259</Column>
<Column name="Operator">nismail9</Column>
<Column name="Description">
<![CDATA[ Unknown ]]>
</Column>
<Column name="Status">Success</Column>
</Operation>
</Operations>
</Run>
</Runs>
您可以使用
选择节点
获取所有操作节点的内部文本,然后对其进行迭代以获取内部文本
var nodes = readDoc.SelectNodes("/Runs/Run/Operations/Operation/
Column[@name='TimeStamp']");
var innerTexts = nodes.OfType<XmlNode>().Select(n => n.InnerText);
var nodes=readDoc.SelectNodes(“/Runs/Run/Operations/Operation/
列[@name='TimeStamp']”;
var InnerText=nodes.OfType().Select(n=>n.InnerText);
确保添加System.Linq
命名空间以使用可枚举扩展方法。使用而不是获取所有匹配的节点。您不需要节点的计数,只需要它们的列表。获取节点后,使用常规的foreach
循环构造对其进行迭代:
var xmlFile = "c:\\input.xml";
XmlDocument readDoc = new XmlDocument();
readDoc.Load(xmlFile);
var nodes = readDoc.SelectNodes("/Runs/Run/Operations/Operation[@type='INTRODUCTION']/Column[@name='TimeStamp']");
foreach (XmlElement node in nodes)
{
Console.WriteLine(node.InnerText);
}
输出为:
2014-05-20T17:43:11.8872105
2014-05-20T17:58:47.0830259
另一种可能是为了获得所需的节点而使用:
try
{
var xmlFile = "c:\\input.xml";
// load the xml file
var xml = XDocument.Load(xmlFile);
// find all operations nodes
var operations = xml.Root.Descendants("Operations").ToList();
// iterate over all nodes
foreach (var operation in operations)
{
// find the operation node with type INTRODUCTION
var op = operation.Elements().Where (o => o.Name == "Operation" && (o.Attribute("type").Value.ToUpper() == "INTRODUCTION")).FirstOrDefault();
if (op != null)
{
// find the timestamp node
var timestamp = op.Elements().Where (o => o.Name == "Column" && (o.Attribute("name").Value.ToUpper() == "TIMESTAMP")).FirstOrDefault();
if (timestamp != null)
{
// and get the value
Console.WriteLine(timestamp.Value);
}
}
}
}
catch (Exception exception)
{
Console.WriteLine(exception.Message);
}
输出与上述相同:
2014-05-20T17:43:11.8872105
2014-05-20T17:58:47.0830259
使用LINQ转换XML
(使用System.Xml.Linq;
)
2014-05-20T17:43:11.8872105
2014-05-20T17:58:47.0830259
var query = XDocument.Load(xmlPath)
.Descendants("Operation")
.Where(w => (string)w.Attribute("type") == "INTRODUCTION")
.SelectMany(s => s.Elements("Column")
.Where(w => (string)w.Attribute("name") == "TimeStamp")
.Select(x => (string)x));