GenericDictionaryFixNull Sample

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Source

using System.Collections.Generic;

namespace XmlSerializersTest.Samples
{
    [Title("Generic dictionary that is never null")]
    public class GenericDictionaryFixNull
    {
        public GenericDictionaryFixNull()
        {
            Things = new Dictionary<int, string>();
        }

        public Dictionary<int, string> Things { get; set; }
    }
}

XAML Serializer

<GenericDictionaryFixNull xmlns="clr-namespace:XmlSerializersTest.Samples;assembly=XmlSerializersTest" xmlns:s="clr-namespace:System;assembly=mscorlib" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
  <GenericDictionaryFixNull.Things>
    <s:String x:Key="1">one</s:String>
    <s:String x:Key="2">two</s:String>
  </GenericDictionaryFixNull.Things>
</GenericDictionaryFixNull>

Deserialization failed:

System.Windows.Markup.XamlParseException: Cannot add content of type 'System.String' to an object of type 'System.Collections.Generic.Dictionary`2[[System.Int32, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.String, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]]'.  Error at object '1', Line 3 Position 30.
   at System.Windows.Markup.XamlParseException.ThrowException(String message, Exception innerException, Int32 lineNumber, Int32 linePosition, Uri baseUri, XamlObjectIds currentXamlObjectIds, XamlObjectIds contextXamlObjectIds, Type objectType)
   at System.Windows.Markup.XamlParseException.ThrowException(ParserContext parserContext, Int32 lineNumber, Int32 linePosition, String message, Exception innerException)
   at System.Windows.Markup.BamlRecordReader.ThrowExceptionWithLine(String message, Exception innerException)
   at System.Windows.Markup.BamlRecordReader.ThrowException(String id, String parameter1, String parameter2)
   at System.Windows.Markup.BamlRecordReader.SetPropertyValueToParent(Boolean fromStartTag, Boolean& isMarkupExtension)
   at System.Windows.Markup.BamlRecordReader.ReadElementEndRecord(Boolean fromNestedBamlRecordReader)
   at System.Windows.Markup.BamlRecordReader.ReadRecord(BamlRecord bamlRecord)
   at System.Windows.Markup.BamlRecordReader.Read(BamlRecord bamlRecord, Int32 lineNumber, Int32 linePosition)
   at System.Windows.Markup.XamlTreeBuilder.BamlRecordWriterSyncUpdate(BamlRecord bamlRecord, Int32 lineNumber, Int32 linePosition)
   at System.Windows.Markup.XamlTreeBuilderBamlRecordWriter.WriteBamlRecord(BamlRecord bamlRecord, Int32 lineNumber, Int32 linePosition)
   at System.Windows.Markup.BamlRecordWriter.WriteAndReleaseRecord(BamlRecord bamlRecord, XamlNode xamlNode)
   at System.Windows.Markup.BamlRecordWriter.WriteElementEnd(XamlElementEndNode xamlElementEndNode)
   at System.Windows.Markup.XamlParser.WriteElementEnd(XamlElementEndNode xamlElementEndNode)
   at System.Windows.Markup.XamlParser.ProcessXamlNode(XamlNode xamlNode, Boolean& cleanup, Boolean& done)
   at System.Windows.Markup.XamlParser.ReadXaml(Boolean singleRecordMode)
   at System.Windows.Markup.TreeBuilderXamlTranslator._Parse()
   at System.Windows.Markup.XamlParser.Parse()
   at System.Windows.Markup.XamlTreeBuilder.ParseFragment()
   at System.Windows.Markup.TreeBuilder.Parse()
   at System.Windows.Markup.XamlReader.XmlTreeBuildDefault(ParserContext pc, XmlReader reader, Boolean wrapWithMarkupCompatReader, XamlParseMode parseMode, Boolean etwTracingEnabled)
   at System.Windows.Markup.XamlReader.Load(XmlReader reader)
   at XmlSerializersTest.Serializers.XamlSerializer.Deserialize(XmlReader reader, Type typeToDeserialize) in C:\Ivan\dev\XmlSerializersTest\XmlSerializersTest\Serializers\XamlSerializer.cs:line 18
   at XmlSerializersTest.SampleProcessor.DeserializeFromString(String xml, IXmlSerializer serializer, Type typeToDeserialize) in C:\Ivan\dev\XmlSerializersTest\XmlSerializersTest\SampleProcessor.cs:line 198
   at XmlSerializersTest.SampleProcessor.RecordDeserializationResults(String xml, IXmlSerializer serializer, Type typeToDeserialize) in C:\Ivan\dev\XmlSerializersTest\XmlSerializersTest\SampleProcessor.cs:line 181