How to check if XML node exists

Question

_{Friday, September 27, 2013 9:46 AM}

Hi,

when you use:

collection.Asset.Add(c.Element("Asset").Value);

It will error if the actualy <node> is not there, which in this case it may or may not be.

How do you do a simple check for this. Can null coelesense be used. Tried it but couldnt get it to work, may have been the syntax,

Thanks.

All replies (2)

_{Saturday, September 28, 2013 10:10 AM ✅Answered}

Can't you do..

var asset = c.Element("Asset");

if(asset!=null)

{

collection.Asset.Add(asset.Value);

}

---

_{Sunday, September 29, 2013 9:42 PM ✅Answered}

Here is a little example that select a specified XmlNode:

using System;
using System.IO;
using System.Xml;

public class Sample
{
  public static void Main()
  {
      XmlDocument doc = new XmlDocument();
      doc.Load("booksort.xml");

      //Select the book node with the matching attribute value.
      XmlNode nodeToFind;
      XmlElement root = doc.DocumentElement;

      // Selects all the title elements that have an attribute named lang
      nodeToFind = root.SelectSingleNode("//title[@lang]");

      if( nodeToFind != null )
      {
           // It was found, manipulate it.
      }
      else
     {
           // It was not found.
      }
  }
}