`System.Xml.Serialization.XmlSerializer` serializes 0x00 but crashes on deserialization

[Bonuspunkt]

sample

public class StringContainer
{
    public string String { get; set; }
}

[Fact]
public void Test()
{
    var serializer = new XmlSerializer(typeof(StringContainer));

    var expected = new StringContainer
    {
        String = "Sample\0Text"
    };

    var stream = new MemoryStream();
    serializer.Serialize(stream, expected);

    stream.Position = 0;
    var actual = (StringContainer)serializer.Deserialize(stream); // <-- exception
}

it would be nice, if the exception would occur at serialization, because its a pita when it happens at deserialization with huge streams (ex There is an error in XML document (54563, 98).)

[huanwu]

@yujayee Could you see if it repro on full framework?

[jiayi11]

@Bonuspunkt I got the same exception when deserialize the string, but the program didn't crash. Could you reproduce the crash in your scenario?

[Bonuspunkt]

yes i meant the exception which leads to a crash when not handled

[jiayi11]

It can repro on full framework, System.InvalidOperationException is thrown during deserialization.

System.InvalidOperationException
  HResult=0x80131509
  Message=There is an error in XML document (3, 17).
  Source=System.Xml
  StackTrace:
   at System.Xml.Serialization.XmlSerializer.Deserialize(XmlReader xmlReader, String encodingStyle, XmlDeserializationEvents events)
   at System.Xml.Serialization.XmlSerializer.Deserialize(Stream stream) 
Inner Exception 1:
XmlException: '.', hexadecimal value 0x00, is an invalid character. Line 3, position 17.

[jiayi11]

The serialization result looks like:

<?xml version="1.0"?>
<MyType xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <Str>Sample&#x0;Text</Str>
</MyType>

The "\0" is encoded as �.