Handling Different XML Element Names for Serialization and Deserialization in C#

Question

I need advice on handling XML serialization and deserialization in C#. My issue is that I receive XML with elements starting with uppercase letters (e.g., <Id>) for deserialization, but I need to get lowercase letters (e.g., <id>) for serialization.

Is there a way to handle these naming differences, other than xslt or custom serializer?

Example class:

[XmlRoot(ElementName = "Invoice")]
public class Invoice
{
    [XmlElement(ElementName = "Id")]
    public int Id { get; set; }

    [XmlElement(ElementName = "User-id")]
    public int UserId { get; set; }
    
    // more properties

}

Edit

My case

I need to read xml from db with first letters big

<Invoice><Id>1</Id><User-id>1</User-id></Invoice>

In the tags and pass it in the body request but with lowercase letters in the tags

<invoice><id>1</id><user-id>1</user-id></invoice>.

Answer 1

This may not be a good solution for everyone, in the RestSharp library I found attributes such as

[DeserializeAs(Name = "...")]
[SerializeAs(Name = "...")]

In my case it look like this

    [SerializeAs(Name = "invoice")]
    [XmlRoot(ElementName = "Invoice")]
    public class invoice
    {
        [SerializeAs(Name = "id")]
        [XmlElement(ElementName = "Id")]
        public int id { get; set; }

        [SerializeAs(Name = "user-id")]
        [XmlElement(ElementName = "User-id")]
        public int userId { get; set; }

        // more properties

    }

from this model i get xml like

<invoice>
  <id>1</id>
  <user-id>1</user-id>
</invoice>

For this to work, there are requirements

 [XmlRoot(ElementName = "...")]
 [XmlElement(ElementName = "...")]