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POProblems with serialization of NameKeyValue and List<>
 

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  1. POProblems with serialization of NameKeyValue and List<>
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    <p>I'll try to show my problems.</p> <p>I have a list of pairs key-values that I want to serialize to a XML file. I've read others questions (<a href="https://stackoverflow.com/questions/2658916/serializing-a-list-of-key-value-pairs-to-xml">question</a> - <a href="http://www.techrepublic.com/blog/howdoi/how-do-i-serialize-a-hash-table-in-c-when-the-application-requires-it/143" rel="nofollow noreferrer">question</a>) in this site and finally I have done this:</p> <pre><code>[Serializable] [XmlType(TypeName = "Pair")] public class NameValuePair { public String Key { get; set; } public Object Value { get; set; } public NameValuePair() { Key = null; Value = null; } public NameValuePair(String k, Object v) { Key = k; Value = v; } } [Serializable] [XmlType(TypeName = "FileTransfer_Configuration_File")] public class ConfigTable : List&lt;NameValuePair&gt; { //more code } //Serialization example XmlSerializer serializer = new XmlSerializer(typeof(ConfigTable)); using (StreamWriter writer = new StreamWriter(file)) { serializer.Serialize(writer, configtable); } </code></pre> <p>And the result is perfectly OK:</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;FileTransfer_Configuration_File xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"&gt; &lt;Pair&gt; &lt;Key&gt;ini_Win&lt;/Key&gt; &lt;Value xsi:type="xsd:boolean"&gt;true&lt;/Value&gt; &lt;/Pair&gt; &lt;Pair&gt; &lt;Key&gt;son_Peticion&lt;/Key&gt; &lt;Value xsi:type="xsd:string"&gt;defecto&lt;/Value&gt; &lt;/Pair&gt; &lt;/FileTransfer_Configuration_File&gt; </code></pre> <p>The problem comes when the value attribute of the NameValuePair is a List&lt;> object. List&lt;> objects are serializable, but not inside a NameValuePair:</p> <pre><code>List&lt;Usuario&gt; aux = new List&lt;Usuario&gt;(); aux.Add(new Usuario("pepito")); aux.Add(new Usuario("juanito")); aux.Add(new Usuario("miguelito", true, "c:/miguelito/")); NameValuePair nvp = new NameValuePair("clave", aux); XmlSerializer serializer = new XmlSerializer(typeof(NameValuePair)); using (StreamWriter writer = new StreamWriter(file)) { serializer.Serialize(writer, nvp); } </code></pre> <p>The result: 'System.InvalidOperationException' in System.Xml.dll and this output:</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;Pair xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"&gt; &lt;Key&gt;clave&lt;/Key&gt; //abrupt tnd of file </code></pre> <p>How can I do what I want? Thank you</p>
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    1. PTQuestion
    1. USCommunity
    1. USJuanma Lozano
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      1. LTLinked
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    1. COOk. I ask myself.
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      1. POProblems with serialization of NameKeyValue and List<>
      1. USJuanma Lozano
    2. COThe `[Serializable]` has no function here.
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      1. POProblems with serialization of NameKeyValue and List<>
      1. USHenk Holterman
    3. COPatience, and use the right tags.
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      1. POProblems with serialization of NameKeyValue and List<>
      1. USHenk Holterman
 

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