Serialize attributes with the same name

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Hi.
I need to build an xml like this

XML

<Dimension>
           <element>MM9</element>
           <element>JKS</element>
           <element>FFES</element>
</Dimension>

The "element" attribute is repeated several times with the same name.
What would be the correct way to do it?

Thanks a lot.

Regards.

What I have tried:

I have tried creating the Dimension class and element attributes

<pre lang="C#">
public class Dimension

   {
       [XmlElement("element")]
       public string element1 { get; set; }
       [XmlElement("element")]
       public string element2 { get; set; }
       [XmlElement("element")]
       public string element3 { get; set;
}

When I serialize the class I get an error for having attributes with the same name.

C#

System.Xml.Serialization.XmlSerializer x = new System.Xml.Serialization.XmlSerializer(Dimension.GetType());
x.Serialize(Console.Out, Dimension);

i tried with a list

C#

public class element
    {
        [XmlElement("element")]
        public string element1 { get; set; }
    }

public List<element> Dimension = new List<element>();

But the result is not what I need

XML

<Dimension>
           <element>
            <element>MM9</element>
          </element>
</Dimension>

Posted 28-Dec-21 23:18pm

Juan Pele

Updated 29-Dec-21 2:38am

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Comments

Richard MacCutchan 29-Dec-21 5:32am

If you have multiple element entries in the Dimension, then the element entry in the class should probably be an array of strings.

Juan Pele 29-Dec-21 7:04am

Hi Richard. Thank you for answering so quickly.

If I understood you correctly, you say to do something like that, right?

public List<string> element = new List<string>();

But if I do this the resulting xml:

<dimension>
<element>
<string>MM9
<string>JKS
<string>FFES

...and what I need is:
<dimension>
<element>MM9
<element>JKS
<element>FFES

Thanks a lot.

Regards.

Richard MacCutchan 29-Dec-21 7:18am

I suggested an array of Strings, I made no mention of List<t>.

Juan Pele 29-Dec-21 18:09pm

Sorry I misunderstood you. Using an array of Strings works correctly, Thanks a lot.

Regards.

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Chris Copeland · Accepted Answer · 2021-12-29T02:38:00

Solution 1

Take a look at this XML serialization documentation page[^]. As Richard mentioned in his comments, you can use an XmlArrayItem attribute to indicate a collection of values. Ie.

C#

public class Dimension
{
  [XmlArrayItem("element")]
  public string[] Elements { get; set; }
}

Posted 29-Dec-21 2:38am

Chris Copeland

Comments

Juan Pele 29-Dec-21 18:06pm

Thank you very much now create the XML just as I needed it

Regards.