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POXML Serialization: System.InvalidOperationException: <tagname> was not expected
 

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  1. POXML Serialization: System.InvalidOperationException: <tagname> was not expected
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    <p>I'm trying to de-serialize an XML Document and when the desserializer encounters a certain tag about halfway down the doc, it gives the error: </p> <pre><code>System.InvalidOperationException &lt;mytagname&gt; was not expected. </code></pre> <p>It has a <code>[System.Xml.Serialization.XmlArrayItemAttribute("MyTagName", typeof(MediaFile))]</code> tag right before it in the class, and the error is only happening on this one particular tag/class, but I can't find anything different about it that would make this occur. Anyone ever seen this before? </p> <p><strong>EDITED FOR MORE DETAIL:</strong></p> <p>Here's the deserializer code:</p> <pre><code> String xmlString = _doc.ToString(); StringReader sr = new StringReader(xmlString); XmlReader xr = XmlReader.Create(sr); xs = new XmlSerializer(typeof(VideoAdServingTemplate&lt;AdNode&gt;)); objVast = (VideoAdServingTemplate&lt;AdNode&gt;)xs.Deserialize(sr); </code></pre> <p>And the XML in question looks like this:</p> <pre><code>&lt;VideoAdServingTemplate xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="vast.xsd"&gt; &lt;Ad id="myad"&gt; &lt;InLine&gt; &lt;AdSystem&gt;MyAdSystem&lt;/AdSystem&gt; &lt;AdTitle&gt;Advertisement&lt;/AdTitle&gt; &lt;Description&gt;Shamwow&lt;/Description&gt; &lt;Survey&gt; &lt;URL&gt;&lt;![CDATA[http://www.dynamiclogic.com/tracker?campaignId=234&amp;site=yahoo]]&gt;&lt;/URL&gt; &lt;/Survey&gt; &lt;Error&gt; &lt;URL&gt;&lt;![CDATA[http://www.primarysite.com/tracker?noPlay=true&amp;impressionTracked=false]]&gt;&lt;/URL&gt; &lt;/Error&gt; &lt;Impression&gt; &lt;URL id="myadsever"&gt;&lt;![CDATA[http://www.primarysite.com/tracker?imp]]&gt;&lt;/URL&gt; &lt;URL id="anotheradsever"&gt;&lt;![CDATA[http://www.thirdparty.com/tracker?imp]]&gt;&lt;/URL&gt; &lt;/Impression&gt; &lt;TrackingEvents&gt; &lt;Tracking event="start"&gt; &lt;URL id="myadsever"&gt;&lt;![CDATA[http://www.primarysite.com/tracker?start]]&gt;&lt;/URL&gt; &lt;/Tracking&gt; &lt;Tracking event="midpoint"&gt; &lt;URL id="myadsever"&gt;&lt;![CDATA[http://www.primarysite.com/tracker?mid]]&gt;&lt;/URL&gt; &lt;URL id="anotheradsever"&gt;&lt;![CDATA[http://www.thirdparty.com/tracker?mid]]&gt;&lt;/URL&gt; &lt;/Tracking&gt; &lt;Tracking event="firstQuartile"&gt; &lt;URL id="myadsever"&gt;&lt;![CDATA[http://www.primarysite.com/tracker?fqtl]]&gt;&lt;/URL&gt; &lt;URL id="anotheradsever"&gt;&lt;![CDATA[http://www.thirdparty.com/tracker?fqtl]]&gt;&lt;/URL&gt; &lt;/Tracking&gt; &lt;Tracking event="thirdQuartile"&gt; &lt;URL id="myadsever"&gt;&lt;![CDATA[http://www.primarysite.com/tracker?tqtl]]&gt;&lt;/URL&gt; &lt;URL id="anotheradsever"&gt;&lt;![CDATA[http://www.thirdparty.com/tracker?tqtl]]&gt;&lt;/URL&gt; &lt;/Tracking&gt; &lt;Tracking event="complete"&gt; &lt;URL id="myadsever"&gt;&lt;![CDATA[http://www.primarysite.com/tracker?comp]]&gt;&lt;/URL&gt; &lt;URL id="anotheradsever"&gt;&lt;![CDATA[http://www.thirdparty.com/tracker?comp]]&gt;&lt;/URL&gt; &lt;/Tracking&gt; &lt;Tracking event="mute"&gt; &lt;URL id="myadsever"&gt;&lt;![CDATA[http://www.primarysite.com/tracker?mute]]&gt;&lt;/URL&gt; &lt;/Tracking&gt; &lt;Tracking event="pause"&gt; &lt;URL id="myadsever"&gt;&lt;![CDATA[http://www.primarysite.com/tracker?pause]]&gt;&lt;/URL&gt; &lt;/Tracking&gt; &lt;Tracking event="replay"&gt; &lt;URL id="myadsever"&gt;&lt;![CDATA[http://www.primarysite.com/tracker?replay]]&gt;&lt;/URL&gt; &lt;/Tracking&gt; &lt;Tracking event="fullscreen"&gt; &lt;URL id="myadsever"&gt;&lt;![CDATA[http://www.primarysite.com/tracker?full]]&gt;&lt;/URL&gt; &lt;/Tracking&gt; &lt;Tracking event="stop"&gt; &lt;URL id="myadsever"&gt;&lt;![CDATA[http://www.primarysite.com/tracker?stop]]&gt;&lt;/URL&gt; &lt;/Tracking&gt; &lt;/TrackingEvents&gt; &lt;Video&gt; &lt;Duration&gt;00:00:15&lt;/Duration&gt; &lt;AdID&gt;AdID&lt;/AdID&gt; &lt;VideoClicks&gt; &lt;ClickThrough&gt; &lt;URL id="myadsever"&gt;&lt;![CDATA[http://www.primarysite.com/tracker?click]]&gt;&lt;/URL&gt; &lt;/ClickThrough&gt; &lt;ClickTracking&gt; &lt;URL id="anotheradsever"&gt;&lt;![CDATA[http://www.thirdparty.com/tracker?click]]&gt;&lt;/URL&gt; &lt;URL id="athirdadsever"&gt;&lt;![CDATA[http://www.thirdparty.com/tracker?click]]&gt;&lt;/URL&gt; &lt;/ClickTracking&gt; &lt;CustomClick&gt; &lt;URL id="redclick"&gt;&lt;![CDATA[http://www.thirdparty.com/tracker?click]]&gt;&lt;/URL&gt; &lt;URL id="blueclick"&gt;&lt;![CDATA[http://www.thirdparty.com/tracker?click]]&gt;&lt;/URL&gt; &lt;/CustomClick&gt; &lt;/VideoClicks&gt; &lt;MediaFiles&gt; &lt;MediaFile delivery="streaming" bitrate="250" width="200" height="200" type="video/x-flv"&gt; &lt;URL&gt;&lt;![CDATA[rtmp://streamingserver/streamingpath/medium/filename.flv]]&gt;&lt;/URL&gt; &lt;/MediaFile&gt; &lt;MediaFile delivery="progressive" bitrate="400" width="200" height="200" type="video/x-flv"&gt; &lt;URL&gt;&lt;![CDATA[http://progressive.hostlocation.com//high/filename.flv]]&gt;&lt;/URL&gt; &lt;/MediaFile&gt; &lt;MediaFile delivery="progressive" bitrate="200" width="200" height="200" type="video/x-flv"&gt; &lt;URL&gt;&lt;![CDATA[http://progressive.hostlocation.com/progressivepath/medium/filename.flv]]&gt;&lt;/URL&gt; &lt;/MediaFile&gt; &lt;!-- and a few more MediaFile tags --&gt; &lt;/MediaFiles&gt; &lt;/Video&gt; </code></pre> <p>There's a bit more to the XML but its pretty big so I cut a lot out of it. I'm not sure of the order in which everything is deserialized, all I know is the first error I see after calling xs.Deserialize() is:</p> <pre><code>Unhandled Error in Silverlight 2 Application Code: 4004 Category: ManagedRuntimeError Message: System.InvalidOperationException: There is an error in XML document (1, 7). ---&gt; System.InvalidOperationException: &lt;MediaFile xmlns=''&gt; was not expected. at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReaderVideoAdServingTemplate1.Read27_VideoAdServingTemplate() --- End of inner exception stack trace --- at System.Xml.Serialization.XmlSerializer.Deserialize(XmlReader xmlReader, String encodingStyle, Object events) at System.Xml.Serialization.XmlSerializer.Deserialize(XmlReader xmlReader, String encodingStyle) at System.Xml.Serialization.XmlSerializer.Deserialize(TextReader textReader) </code></pre> <p>There's no indication of what was expected or why this wasn't expected. </p> <p>The class that implements it has this definition to associate the tag with an object:</p> <pre><code> [System.Xml.Serialization.XmlArrayItemAttribute("MediaFile", typeof(MediaFile))] public MediaFile[] MediaFiles { get { return this.mediaFilesField; } set { this.mediaFilesField = value; } } </code></pre> <p>I assume that the [] in the definition and the use of XmlArrayItemAttribute is because there are multiple MediaFile tags in a row, so they are being placed into an array. I generated this code with xsd.exe and modified it slightly to work in Silverlight. </p>
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    1. COAre you serializing or deserializing the XML? Can you provide a chunk of the XML and the code in question?
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    2. COoops, yeah, sorry I wrote this in a hurry. I added more detail and more code.
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