implementing Nested XML Elements Parsing Using XmlDocument in C# - Missing Values
I'm maintaining legacy code that I'm working with a question while trying to parse an XML document that contains nested elements using `XmlDocument` in C#. My XML structure looks like this: ```xml <root> <item> <name>Item1</name> <details> <description>Description1</description> <price>10.00</price> </details> </item> <item> <name>Item2</name> <details> <description>Description2</description> <price>20.00</price> </details> </item> </root> ``` I am trying to extract the values of `name`, `description`, and `price` for each `item`. Here's my current code: ```csharp XmlDocument xmlDoc = new XmlDocument(); xmlDoc.Load("path_to_your_file.xml"); XmlNodeList items = xmlDoc.SelectNodes("/root/item"); foreach (XmlNode item in items) { string name = item.SelectSingleNode("name")?.InnerText; string description = item.SelectSingleNode("details/description")?.InnerText; string price = item.SelectSingleNode("details/price")?.InnerText; Console.WriteLine($"Name: {name}, Description: {description}, Price: {price}"); } ``` However, I am working with issues where the `description` and `price` values are sometimes returning as `null`. After checking the XML structure, I noticed that in some instances, the `details` element is missing entirely, which is causing the `SelectSingleNode` calls to return `null`. I tried adding checks to see if the `details` node exists before trying to access its children, but it's still not behaving as expected. My question is: what’s the best way to handle this situation to prevent `null` values from being printed and ensure that I can correctly process items even when certain elements are missing? I want to implement a more robust way to deal with optional nested elements. Any suggestions or best practices would be greatly appreciated! This is my first time working with C# stable. Thanks in advance! For reference, this is a production desktop app. Any ideas how to fix this?