Add XML element to existing XmlNodeList C#?[Answered] RSS

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  Narsa8

  Member

  2 Points

  1 Post

  Add XML element to existing XmlNodeList C#?

  Apr 04, 2017 03:53 AM|Narsa8|LINK

  Hi,

  I am getting strucked in below concept.

  I have an xml string  like this..

  <ResponseData> 
    <a> 
      <a1>1</a1> 
      <a2>1</a2> 
    </a> 
    <b> 
      <b1>1</b1> 
      <b2>2</b2> 
    </b> 
    <b> 
      <b1>3</b1> 
      <b2>4</b2> 
    </b> 
    <c> 
      <c1>1</c1> 
      <c2>2</c2> 
    </c> 
  </ResponseData> 

  and desired output of XML string is
  
  

  <ResponseData> 
    <a> 
      <a1>1</a1> 
      <a2>1</a2> 
    </a> 
    <B>
      <b> 
        <b1>1</b1> 
        <b2>2</b2> 
      </b> 
      <b> 
        <b1>3</b1> 
        <b2>4</b2> 
      </b> 
    </B>
    <c> 
      <c1>1</c1> 
      <c2>2</c2> 
    </c> 
  </ResponseData> 

  And I have tired until this part and could not find a solution how to add new element to existing XMLNodeList

   XmlDocument doc = new XmlDocument();
              doc.LoadXml("<ResponseData><a><a1>1</a1><a2>1</a2></a><b><b1>1</b1><b2>2</b2></b><b><b1>3</b1><b2>4</b2></b><c><c1>1</c1><c2>2</c2></c></ResponseData>");
  
              XmlNode root = doc.DocumentElement;
  
              //Create a new node.
              XmlElement elem = doc.CreateElement("B");
  
              XmlNodeList accountNodes = doc.GetElementsByTagName("b");         
           
              // ?
            

  How to add <B></B> element for whole <b></b> elementsList?

  Please help me on this.

  Thanks in advance

  
  
  

• • Reply
  kaushalparik...

  All-Star

  31362 Points

  7055 Posts

  Re: Add XML element to existing XmlNodeList C#?

  Apr 04, 2017 07:28 AM|kaushalparik27|LINK

  Going thru XElement will be much easier than XmlDocument:

  using System;
  using System.Xml.Linq;
  using System.Xml.XPath;
  
  namespace WebApp
  {
      public partial class WebForm89 : System.Web.UI.Page
      {
          protected void Page_Load(object sender, EventArgs e)
          {
              XElement xSrc = XElement.Parse("<ResponseData><a><a1>1</a1><a2>1</a2></a><b><b1>1</b1><b2>2</b2></b><b><b1>3</b1><b2>4</b2></b><c><c1>1</c1><c2>2</c2></c></ResponseData>");
              XElement xResult = new XElement("ResponseData",
                                                  xSrc.XPathSelectElements("a"),
                                                  new XElement("B", xSrc.XPathSelectElements("b")),
                                                  xSrc.XPathSelectElements("c"));
          }
      }
  }

  

  नमस्ते,
  [KaushaL] Blog Twitter [MS MVP 2008 & 2009] [MCC 2011] [MVP Reconnect 2017]
  Don't forget to click "Mark as Answer" on the post that helped you
• • Reply
  Eric Du

  Contributor

  6720 Points

  2715 Posts

  Re: Add XML element to existing XmlNodeList C#?

  Apr 04, 2017 08:09 AM|Eric Du|LINK

  Hi Narsa8,

  According to your description, as far as I know, you could use remove method to remove the related elements. Then append a new element. Then append removed elements into new element. Please refer to this sample:

  Sample Code:

  protected void Button1_Click(object sender, EventArgs e)
          {
              XmlDocument xmlDoc = new XmlDocument();
              xmlDoc.LoadXml(@"<NonFuel><Desc>Fuel</Desc><Desc>Non</Desc><Description></Description><Dispute>0</Dispute></NonFuel>");
              XmlNode root = xmlDoc.DocumentElement;
  
              //Remove the title element.
              root.RemoveChild(root.ChildNodes[0]);
              root.RemoveChild(root.ChildNodes[0]);
  
  
              XmlElement elem = xmlDoc.CreateElement("title");
            
              root.AppendChild(elem);
              XmlNode Descone = xmlDoc.CreateElement("Desc");
              Descone.InnerText = "Fuel";
              XmlNode Desctwo = xmlDoc.CreateElement("Desc");
              Desctwo.InnerText = "Non";
  
              root.ChildNodes[2].AppendChild(Descone);
              root.ChildNodes[2].AppendChild(Desctwo);
          }

  Best Regards,

  Eric Du

  MSDN Community Support
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