如何从xml文档中删除特定节点？

我有下面的XML结构。我想删除一个完整的节点<ColumnValues>USD</ColumnValues>如何从xml文档中删除特定节点？

<TableValue> 
    <Columns> 
     <ColumnName>Currency</ColumnName> 
     <ColumnType>String</ColumnType> 
     <ColumnValues>USD</ColumnValues> 
     <ColumnValues>USD</ColumnValues> 
    </Columns> 
    <Columns> 
     <ColumnName>Exchange</ColumnName> 
     <ColumnType>String</ColumnType> 
     <ColumnValues>US</ColumnValues> 
     <ColumnValues>US</ColumnValues> 
    </Columns> 
    <Columns> 
     <ColumnName>Ticker</ColumnName> 
     <ColumnType>String</ColumnType> 
     <ColumnValues>C</ColumnValues> 
     <ColumnValues>AAPL</ColumnValues> 
    </Columns> 
</TableValue>

对于这个我使用下面的代码 -

XmlDocument doc = new XmlDocument(); 
doc.Load(@"C:\CASInputRequest_WOELN_Var1.xml"); 
XmlNodeList NodeTradeType = doc.GetElementsByTagName("ColumnValues"); 
NodeTradeType[0].RemoveAll(); 
doc.Save(@"C:\CASInputRequest_WOELN_Var1.xml");

，但它不是完全删除节点。输出是这样的 -

<TableValue> 
    <Columns> 
     <ColumnName>Currency</ColumnName> 
     <ColumnType>String</ColumnType> 
     <ColumnValues> 
     </ColumnValues> 
     <ColumnValues>USD</ColumnValues> 
    </Columns> 
    <Columns> 
     <ColumnName>Exchange</ColumnName> 
     <ColumnType>String</ColumnType> 
     <ColumnValues>US</ColumnValues> 
     <ColumnValues>US</ColumnValues> 
    </Columns> 
    <Columns> 
     <ColumnName>Ticker</ColumnName> 
     <ColumnType>String</ColumnType> 
     <ColumnValues>C</ColumnValues> 
     <ColumnValues>AAPL</ColumnValues> 
    </Columns> 
</TableValue>

请建议，如何从xml中完全删除特定节点？

来源

2013-07-04 user2318170

您能够使用LINQ到XML，顺便说一下？这通常会使XML更加愉快地处理。 –

相关文档：[MSDN - 'System.Xml.XmlNode']（http://msdn.microsoft.com/zh-cn/library/system.xml.xmlnode.aspx） –

奇怪的声音，没有方法XmlNode它将从文档中删除该节点。你要问节点的双亲删除节点：

XmlDocument doc = new XmlDocument(); 
doc.Load(@"C:\CASInputRequest_WOELN_Var1.xml"); 
XmlNodeList nodes = doc.GetElementsByTagName("ColumnValues"); 
XmlNode node = nodes[0]; 
node.ParentNode.RemoveChild(node); 
doc.Save(@"C:\CASInputRequest_WOELN_Var1.xml");

如果你可以使用LINQ到XML的生活会更容易不过。例如，删除你只是使用所有ColumnValues节点：

XDocument doc = XDocument.Load(@"C:\CASInputRequest_WOELN_Var1.xml"); 
doc.Descendants("ColumnValues").Remove(); 
doc.Save(@"C:\CASInputRequest_WOELN_Var1.xml");

或者只是第一个：

XDocument doc = XDocument.Load(@"C:\CASInputRequest_WOELN_Var1.xml"); 
doc.Descendants("ColumnValues").First().Remove(); 
doc.Save(@"C:\CASInputRequest_WOELN_Var1.xml");

来源

2013-07-04 05:50:53

为什么这对你来说很奇怪？ – ilansch

@ilansch：因为在XmlNode上有一个'Remove'操作会更加明智，它会从文档中移除它 - 就像在LINQ to XML中一样。 –

public void RemovePendingMessage(String message, String AdapterType, Configuration.Adapter xmlAdapterConfiguration, String traceSchedulerName, Int64 CorrelationID) 
     { 
      try 
      { 
       XmlNode docNode = null; 
       XmlDocument xmlDoc = new XmlDocument(); 
       XmlDocument xdoc = new XmlDocument(); 
       String date = String.Empty; 
       string strValue = string.Empty; 
       if (File.Exists(@"C:\Temp\UnsendMessages.xml")) 
       { 
        xmlDoc.Load(@"C:\Temp\UnsendMessages.xml"); 
        XmlNode Unsendmessages = xmlDoc.DocumentElement; 
        XPathNavigator navigator = xmlDoc.CreateNavigator(); 
        xdoc.LoadXml(message);      

        using (XmlReader reader = XmlReader.Create(new StringReader(message))) 
        { 
         reader.ReadToFollowing("Adapter"); 
         reader.MoveToContent(); 
         strValue = reader.GetAttribute("timestamp");       
        } 

        if (strValue != null) 
        { 
         docNode = xmlDoc.SelectSingleNode("//Adapter[@timestamp='" + strValue.ToString() +"' and @type='" + AdapterType.ToString() + "']"); 
         docNode.RemoveAll();      
        } 
       xmlDoc.Save(@"C:\Temp\UnsendMessages.xml"); 
       } 
      } 
      catch (Exception ex) 
      { 

      } 
     } 
------------------------------------------------------------- 
<?xml version="1.0" encoding="utf-8"?> 
<Unsendmessages> 
    <Adapter> 
    </Adapter> 
    <Adapter type="XMLAdapter" timestamp="2014-10-15 16:48:02Z"> 
    <Resendmessage> 
     <WMRP_ORDERS> 
     <ORDERSCONTRACTNO>C0017</ORDERSCONTRACTNO> 
     <ORDERS_STATUSID>17</ORDERS_STATUSID> 
     <ORDERSDATERECEIVED>9/2/2014 12:00:00 AM</ORDERSDATERECEIVED> 
     <ORDERS_BT_ORDER_NO>O0017</ORDERS_BT_ORDER_NO> 
     <ORDERS_REGION_CODE>17</ORDERS_REGION_CODE> 
     <ORDERSSCHEDULEDSTARTDATE>9/2/2014 12:00:00 AM</ORDERSSCHEDULEDSTARTDATE> 
     <ORDERSSCHEDULEDENDDATE>9/10/2014 12:00:00 AM</ORDERSSCHEDULEDENDDATE> 
     </WMRP_ORDERS> 
    </Resendmessage> 
    </Adapter> 
    <Adapter type="XMLAdapter" timestamp="2014-10-15 16:47:32Z"> 
    <Resendmessage> 
     <WMRP_ORDERS> 
     <ORDERSCONTRACTNO>C0016</ORDERSCONTRACTNO> 
     <ORDERS_STATUSID>16</ORDERS_STATUSID> 
     <ORDERSDATERECEIVED>9/2/2014 12:00:00 AM</ORDERSDATERECEIVED> 
     <ORDERS_BT_ORDER_NO>O0016</ORDERS_BT_ORDER_NO> 
     <ORDERS_REGION_CODE>16</ORDERS_REGION_CODE> 
     <ORDERSSCHEDULEDSTARTDATE>9/2/2014 12:00:00 AM</ORDERSSCHEDULEDSTARTDATE> 
     <ORDERSSCHEDULEDENDDATE>9/10/2014 12:00:00 AM</ORDERSSCHEDULEDENDDATE> 
     </WMRP_ORDERS> 
    </Resendmessage> 
    </Adapter> 
    <Adapter type="XMLAdapter" timestamp="2014-10-15 16:46:58Z"> 
    <Resendmessage> 
     <WMRP_ORDERS> 
     <ORDERSCONTRACTNO>C0017</ORDERSCONTRACTNO> 
     <ORDERS_STATUSID>17</ORDERS_STATUSID> 
     <ORDERSDATERECEIVED>9/2/2014 12:00:00 AM</ORDERSDATERECEIVED> 
     <ORDERS_BT_ORDER_NO>O0017</ORDERS_BT_ORDER_NO> 
     <ORDERS_REGION_CODE>17</ORDERS_REGION_CODE> 
     <ORDERSSCHEDULEDSTARTDATE>9/2/2014 12:00:00 AM</ORDERSSCHEDULEDSTARTDATE> 
     <ORDERSSCHEDULEDENDDATE>9/10/2014 12:00:00 AM</ORDERSSCHEDULEDENDDATE> 
     </WMRP_ORDERS> 
    </Resendmessage> 
    </Adapter> 
    <Adapter type="XMLAdapter" timestamp="2014-10-15 16:46:25Z"> 
    <Resendmessage> 
     <WMRP_ORDERS> 
     <ORDERSCONTRACTNO>C0016</ORDERSCONTRACTNO> 
     <ORDERS_STATUSID>16</ORDERS_STATUSID> 
     <ORDERSDATERECEIVED>9/2/2014 12:00:00 AM</ORDERSDATERECEIVED> 
     <ORDERS_BT_ORDER_NO>O0016</ORDERS_BT_ORDER_NO> 
     <ORDERS_REGION_CODE>16</ORDERS_REGION_CODE> 
     <ORDERSSCHEDULEDSTARTDATE>9/2/2014 12:00:00 AM</ORDERSSCHEDULEDSTARTDATE> 
     <ORDERSSCHEDULEDENDDATE>9/10/2014 12:00:00 AM</ORDERSSCHEDULEDENDDATE> 
     </WMRP_ORDERS> 
    </Resendmessage> 
    </Adapter> 
    <Adapter> 
    </Adapter> 
</Unsendmessages>

来源

2014-10-16 06:12:29

如何从xml文档中删除特定节点？

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