Converting XmlNodeList to List<string> in C#

Converting XmlNodeList to List<string> in C#

To convert an XmlNodeList to a List<string> in C#, you can use LINQ's Select method to transform each XmlNode in the XmlNodeList to its InnerText value, and then use the ToList method to create a List<string> from the results.

Here's an example:

XmlNodeList nodeList = xmlDoc.SelectNodes("//MyNode"); List<string> stringList = nodeList.Cast<XmlNode>() .Select(node => node.InnerText) .ToList();

In this example, an XmlNodeList is selected from an XML document using an XPath expression. The Cast method is used to cast each XmlNode in the XmlNodeList to a XmlNode object, which is then passed to the Select method. The lambda expression node => node.InnerText is used to transform each XmlNode to its InnerText value. Finally, the ToList method is used to create a List<string> from the results.

Note that Cast is used to cast the XmlNode objects to object first, and then cast them to XmlNode. This is necessary because XmlNodeList does not implement the IEnumerable<XmlNode> interface directly, but it does implement the non-generic IEnumerable interface, which allows casting to object. By casting to object first, the Cast method allows the XmlNode objects to be cast to XmlNode in a type-safe way.

Also note that the Select method is part of the LINQ library, which is available in .NET Framework 3.5 and later versions. If you are using an earlier version of .NET Framework, you may need to use a foreach loop to iterate over the XmlNodeList and add the InnerText values to the List<string> manually.

Examples

  1. "C# convert XmlNodeList to List<string>"

    • Code:
      XmlNodeList nodeList = // your XmlNodeList instance List<string> stringList = new List<string>(); foreach (XmlNode node in nodeList) { stringList.Add(node.InnerText); } // Use 'stringList' as the representation of XmlNodeList in List<string>.
    • Description: Iterates through each XmlNode in the XmlNodeList and extracts its InnerText to populate a List<string>.

  2. "C# XmlNodeList to List<string> conversion example"

    • Code:
      XmlNodeList nodeList = // your XmlNodeList instance List<string> stringList = nodeList.Cast<XmlNode>().Select(node => node.InnerText).ToList(); // Use 'stringList' as the representation of XmlNodeList in List<string>.
    • Description: Demonstrates a concise example of converting an XmlNodeList to a List<string> using LINQ.

  3. "C# XmlNodeList to List<string> with attribute values"

    • Code:
      XmlNodeList nodeList = // your XmlNodeList instance List<string> attributeValues = new List<string>(); foreach (XmlNode node in nodeList) { string attributeValue = node.Attributes["AttributeName"]?.Value; if (attributeValue != null) attributeValues.Add(attributeValue); } // Use 'attributeValues' as the representation of XmlNodeList attribute values in List<string>.
    • Description: Extracts a specific attribute value from each XmlNode in the XmlNodeList and populates a List<string>.

  4. "C# XmlNodeList to List<string> without null values"

    • Code:
      XmlNodeList nodeList = // your XmlNodeList instance List<string> stringList = nodeList.Cast<XmlNode>().Select(node => node.InnerText).Where(value => !string.IsNullOrEmpty(value)).ToList(); // Use 'stringList' as the representation of XmlNodeList in List<string> without null or empty values.
    • Description: Converts an XmlNodeList to a List<string> while filtering out null or empty values using LINQ.

  5. "C# XmlNodeList to List<string> with specific node names"

    • Code:
      XmlNodeList nodeList = // your XmlNodeList instance List<string> stringList = nodeList.Cast<XmlNode>().Where(node => node.Name == "SpecificNodeName").Select(node => node.InnerText).ToList(); // Use 'stringList' as the representation of XmlNodeList with specific node names in List<string>.
    • Description: Filters XmlNodeList based on specific node names and extracts InnerText to populate a List<string>.

  6. "C# XmlNodeList to List<string> with case-insensitive comparison"

    • Code:
      XmlNodeList nodeList = // your XmlNodeList instance List<string> stringList = nodeList.Cast<XmlNode>().Select(node => node.InnerText).Where(value => !string.IsNullOrEmpty(value)).Select(value => value.ToLowerInvariant()).ToList(); // Use 'stringList' as the representation of XmlNodeList in List<string> with case-insensitive comparison.
    • Description: Converts an XmlNodeList to a List<string> with case-insensitive comparison of values using LINQ.

  7. "C# XmlNodeList to List<string> with distinct values"

    • Code:
      XmlNodeList nodeList = // your XmlNodeList instance List<string> distinctValues = nodeList.Cast<XmlNode>().Select(node => node.InnerText).Distinct().ToList(); // Use 'distinctValues' as the representation of distinct values from XmlNodeList in List<string>.
    • Description: Extracts distinct values from an XmlNodeList and populates a List<string> using LINQ.

  8. "C# XmlNodeList to List<string> with trimming whitespace"

    • Code:
      XmlNodeList nodeList = // your XmlNodeList instance List<string> stringList = nodeList.Cast<XmlNode>().Select(node => node.InnerText.Trim()).ToList(); // Use 'stringList' as the representation of XmlNodeList in List<string> with trimmed whitespace.
    • Description: Trims whitespace from the InnerText of each XmlNode in the XmlNodeList while converting to List<string>.

  9. "C# XmlNodeList to List<string> with specific XPath expression"

    • Code:
      XmlNodeList nodeList = // your XmlNodeList instance List<string> stringList = nodeList.Cast<XmlNode>().Select(node => node.SelectSingleNode("XPathExpression")?.InnerText).ToList(); // Use 'stringList' as the representation of XmlNodeList with specific XPath expression in List<string>.
    • Description: Applies a specific XPath expression to each XmlNode in the XmlNodeList and extracts InnerText to populate a List<string>.

  10. "C# XmlNodeList to List<string> with custom filtering logic"

    • Code:
      XmlNodeList nodeList = // your XmlNodeList instance List<string> filteredList = nodeList.Cast<XmlNode>().Select(node => node.InnerText).Where(value => /* custom filtering logic */).ToList(); // Use 'filteredList' as the representation of XmlNodeList in List<string> with custom filtering logic.
    • Description: Utilizes custom filtering logic to convert an XmlNodeList to a List<string>, including only values that meet specific criteria.

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