There was an error reflecting property

Using C# .NET 2.0, I have a composite data class that does have the [Serializable] attribute on it. I am creating an XMLSerializer class and passing that into the constructor: XmlSerializer seria...

If you need to handle specific attributes (i.e. Dictionary, or any class), you can implement the IXmlSerialiable interface, which will allow you more freedom at the cost of more verbose coding.

public class NetService : IXmlSerializable
{
    #region Data

        public string Identifier = String.Empty;

        public string Name = String.Empty;

        public IPAddress Address = IPAddress.None;
        public int Port = 7777;

    #endregion

    #region IXmlSerializable Implementation

        public XmlSchema GetSchema() { return (null); }

        public void ReadXml(XmlReader reader)
        {
            // Attributes
            Identifier = reader[XML_IDENTIFIER];
            if (Int32.TryParse(reader[XML_NETWORK_PORT], out Port) == false)
            throw new XmlException("unable to parse the element " + typeof(NetService).Name + " (badly formatted parameter " + XML_NETWORK_PORT);
            if (IPAddress.TryParse(reader[XML_NETWORK_ADDR], out Address) == false)
            throw new XmlException("unable to parse the element " + typeof(NetService).Name + " (badly formatted parameter " + XML_NETWORK_ADDR);
        }

        public void WriteXml(XmlWriter writer)
        {
            // Attributes
            writer.WriteAttributeString(XML_IDENTIFIER, Identifier);
            writer.WriteAttributeString(XML_NETWORK_ADDR, Address.ToString());
            writer.WriteAttributeString(XML_NETWORK_PORT, Port.ToString());
        }

        private const string XML_IDENTIFIER = "Id";

        private const string XML_NETWORK_ADDR = "Address";

        private const string XML_NETWORK_PORT = "Port";

    #endregion
}

There is an interesting article, which show an elegant way to implements a sophisticated way to «extend» the XmlSerializer.


The article say:

IXmlSerializable is covered in the official documentation, but the documentation states it’s not intended for public use and provides no information beyond that. This indicates that the development team wanted to reserve the right to modify, disable, or even completely remove this extensibility hook down the road. However, as long as you’re willing to accept this uncertainty and deal with possible changes in the future, there’s no reason whatsoever you can’t take advantage of it.

Because this, I suggest to implement you’re own IXmlSerializable classes, in order to avoid too much complicated implementations.

…it could be straightforward to implements our custom XmlSerializer class using reflection.

If you need to handle specific attributes (i.e. Dictionary, or any class), you can implement the IXmlSerialiable interface, which will allow you more freedom at the cost of more verbose coding.

public class NetService : IXmlSerializable
{
    #region Data

        public string Identifier = String.Empty;

        public string Name = String.Empty;

        public IPAddress Address = IPAddress.None;
        public int Port = 7777;

    #endregion

    #region IXmlSerializable Implementation

        public XmlSchema GetSchema() { return (null); }

        public void ReadXml(XmlReader reader)
        {
            // Attributes
            Identifier = reader[XML_IDENTIFIER];
            if (Int32.TryParse(reader[XML_NETWORK_PORT], out Port) == false)
            throw new XmlException("unable to parse the element " + typeof(NetService).Name + " (badly formatted parameter " + XML_NETWORK_PORT);
            if (IPAddress.TryParse(reader[XML_NETWORK_ADDR], out Address) == false)
            throw new XmlException("unable to parse the element " + typeof(NetService).Name + " (badly formatted parameter " + XML_NETWORK_ADDR);
        }

        public void WriteXml(XmlWriter writer)
        {
            // Attributes
            writer.WriteAttributeString(XML_IDENTIFIER, Identifier);
            writer.WriteAttributeString(XML_NETWORK_ADDR, Address.ToString());
            writer.WriteAttributeString(XML_NETWORK_PORT, Port.ToString());
        }

        private const string XML_IDENTIFIER = "Id";

        private const string XML_NETWORK_ADDR = "Address";

        private const string XML_NETWORK_PORT = "Port";

    #endregion
}

There is an interesting article, which show an elegant way to implements a sophisticated way to «extend» the XmlSerializer.


The article say:

IXmlSerializable is covered in the official documentation, but the documentation states it’s not intended for public use and provides no information beyond that. This indicates that the development team wanted to reserve the right to modify, disable, or even completely remove this extensibility hook down the road. However, as long as you’re willing to accept this uncertainty and deal with possible changes in the future, there’s no reason whatsoever you can’t take advantage of it.

Because this, I suggest to implement you’re own IXmlSerializable classes, in order to avoid too much complicated implementations.

…it could be straightforward to implements our custom XmlSerializer class using reflection.

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  • Question

  • Since I added a Uri property to this class, I get this error:

    A first chance exception of type ‘System.InvalidOperationException’ occurred in System.Xml.dll
    There was an error reflecting type ‘MainViewModel’.There was an error reflecting property ‘SelectedWp’.

    This is part of the «MainViewModel»

    ... 
           [DataMember]
            Waypoint _SelectedWp = null;
            public Waypoint SelectedWp
            {
                get
                {
                    return _SelectedWp;
                }
                set
                {
                    if (value != _SelectedWp)
                    {
                        _SelectedWp = value;
                        NotifyPropertyChanged("SelectedWp");
                    }
                }
            }
            private String _addName;
            [DataMember]
    ...

    This error just started showing up. One of the recent changes was to add a Uri property to «Waypoint». Is that the problem? If so, what is a work-around to avoid this exception?

    Thanks,

    Rick

Answers

  • if you are trying to ignore the problematic property, you can give it a shot with
    [System.Xml.Serialization.XmlIgnore] , since we are talking about the XmlSerialization rather than Runtime.Serialization. It is enough to put it on Public properties, since the private ones are not taken into account anyways. (i.e. Public properties
    and members are serialized by default.


    Can Bilgin
    Blog
    CompuSight

    • Marked as answer by

      Tuesday, July 24, 2012 9:38 PM

[Solved-3 Solutions] XmlSerializer — There was an error reflecting type


Error Description:

  • Using C# .NET 2.0, we have a composite data class that does have the [Serializable] attribute on it. When we create an XMLSerializer class and pass that into the constructor:
XmlSerializer serializer = new XmlSerializer(typeof(DataClass));
click below button to copy the code. By — C# tutorial — team
  • We get this exemption saying:

There was an error reflecting type.

Solution 1:

  • Look at the inner exception that you are getting. It will tell which field/property it is having trouble serializing.
  • We can exclude fields/properties from xml serialization by decorating them with the [XmlIgnore]attribute.

Solution 2:

  • Serialized classes must have default (i.e. parameter less) constructors. If we have no constructor at all, that’s fine; but if we have a constructor with a parameter, we’ll need to add the default one too.

Solution 3:

  • All the objects in the serialization graph have to be serializable.
  • Since XMLSerializer is a black box, check these links if you want to debug further into the serialization process.

Changing where XmlSerializer Outputs Temporary Assemblies
HOW TO: Debug into a .NET XmlSerializer Generated Assembly


Hi. Im running into the same problem as #2150 .

System.InvalidOperationException: There was an error reflecting type ‘ZregService.ManifestType’. —> System.InvalidOperationException: There was an error reflecting property ‘Reference’. —> System.InvalidOperationException: There was an error reflecting type ‘ZregService.ReferenceType’. —> System.InvalidOperationException: There was an error reflecting property ‘DigestMethod’. —> System.InvalidOperationException: There was an error reflecting type ‘ZregService.DigestMethodType’. —> System.InvalidOperationException: There was an error reflecting property ‘Any’. —> System.InvalidOperationException: There was an error reflecting type ‘System.Xml.Linq.XElement’. —> System.InvalidOperationException: System.Xml.Linq.XElement cannot be used as: ‘xml text’.
at System.Xml.Serialization.XmlReflectionImporter.CheckContext(TypeDesc typeDesc, ImportContext context)
at System.Xml.Serialization.XmlReflectionImporter.ImportSpecialMapping(Type type, TypeDesc typeDesc, String ns, ImportContext context, RecursionLimiter limiter)
at System.Xml.Serialization.XmlReflectionImporter.ImportTypeMapping(TypeModel model, String ns, ImportContext context, String dataType, XmlAttributes a, Boolean repeats, Boolean openModel, RecursionLimiter limiter)
— End of inner exception stack trace —

Here is the wsdl
wsdl.zip

And here is the generated reference
Reference.zip

Seems like it does not like the System.Xml.Linq.XElement Any properties like in:


    [System.CodeDom.Compiler.GeneratedCodeAttribute("dotnet-svcutil","0.5.0.0")]
    [System.Diagnostics.DebuggerStepThroughAttribute()]
    [System.Xml.Serialization.XmlTypeAttribute(Namespace="http://www.w3.org/2000/09/xmldsig#")]
    public partial class DigestMethodType
    {
        
        private System.Xml.Linq.XElement[] anyField;
        
        private string algorithmField;
        
        /// <remarks/>
        [System.Xml.Serialization.XmlTextAttribute()]
        [System.Xml.Serialization.XmlAnyElementAttribute(Order=0)]
        public System.Xml.Linq.XElement[] Any
        {
            get
            {
                return this.anyField;
            }
            set
            {
                this.anyField = value;
            }
        }
        
        /// <remarks/>
        [System.Xml.Serialization.XmlAttributeAttribute(DataType="anyURI")]
        public string Algorithm
        {
            get
            {
                return this.algorithmField;
            }
            set
            {
                this.algorithmField = value;
            }
        }
    }

Let’s say you have a C# (or VB.NET) project with namespace “MyProject” and you are trying to serialize a class named “MyClass” and you get the error message: There was an error reflecting type ‘MyProject.MyClass’.

The first thing to check, is that the class which you want to serialize (that save it to disk), contains the [Serializable] attribute.

First Thing to Check: The [Serializable] attribute

Example of proper usage of the [Serializable] attribute:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace MyProject
{
    [Serializable]
    public class MyClass
    {
        public string something;
        
        //NOTE: Something else is still missing, see next example.

    }
}

Even though however you include the [Serializable] attribute in your class as above, there is still something missing.

If you try to serialize the above class, you will still get the error message  “There was an error reflecting type…

Second Thing to Check: Is there a Default Constructor for your Class?

So what’s wrong and you still cannot serialize the class?

Well, the answer is quite simple: You need to include in in your class a default constructor, that is a constructor with no parameters.


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Code Example that Works

So, if we take the above code example and further modify it, our class will be successfully serialized to disk:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace MyProject
{
    [Serializable]
    public class MyClass
    {
        public string something;
        
       //Default Constructor
        public MyClass(){
      
    }
   }
}

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  1. There was an error reflecting field
  2. Answered by:
  3. Question
  4. Answers
  5. All replies
  6. There was an error reflecting field
  7. Answered by:
  8. Question
  9. Answers
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  14. Error on executing DB command
  15. Error on executing DB command

There was an error reflecting field

Answered by:

Question

I’m writing a web service client dll in Managed C++ 2003 for a Java WebService. I added the web service as webreference and its compiling well.

when i try to run the application its giving a runtime error «Method can not be reflected» when i try to create the object for the Web Service class.

The webservice is working fine when i run it through the browser or from another C# 2005 client.

I tried to add that service as a reference to a managed C++ 2005, but the generated files are giving some compiler errors.

Can anyone help me on how to resolve this error.

Below is the complete error list

ERROR Exception handled : Method can not be reflected.
at System.Web.Services.Protocols.SoapReflector.ReflectMethod(LogicalMethodInf
o methodInfo, Boolean client, XmlReflectionImporter xmlImporter, SoapReflectionI
mporter soapImporter, String defaultNs)
at System.Web.Services.Protocols.SoapClientType.GenerateXmlMappings(Type type
, ArrayList soapMethodList, String serviceNamespace, Boolean serviceDefaultIsEnc
oded, ArrayList mappings)
at System.Web.Services.Protocols.SoapClientType..ctor(Type type)
at System.Web.Services.Protocols.SoapHttpClientProtocol..ctor()

Answers

Please allow me to translate this, from «.NET» into «English»:

  1. System.InvalidOperationException: Method can not be reflected, because of
  2. System.InvalidOperationException: There was an error reflecting ‘inData’., because of
  3. System.InvalidOperationException: There was an error reflecting type ‘ ‘. , because of
  4. System.InvalidOperationException: There was an error reflecting field ‘osaRequestHeader’. , because of
  5. System.InvalidOperationException: There was an error reflecting type ‘., because of
  6. System.InvalidOperationException: There was an error reflecting field ‘entitlements’., because of
  7. System.InvalidOperationException: There was an error reflecting type ‘ANIMatchService.Entitlements’., because of
  8. System.InvalidOperationException: There was an error reflecting field ‘entitlement’., because of
  9. System.InvalidOperationException: The Form property may not be ‘Unqualified’ when an explicit Namespace property is present.

The original problem is at number 9. It appears that the «entitlement» field is specified to use Form=»Unqualified» at the same type that it sets a specific namespace. You will need either to not use the Form property, or not use the Namespace property.

John Saunders | Use File->New Project to create Web Service Projects

  • Marked as answer by Nathan Anderson — MSFT Microsoft employee, Moderator Thursday, September 4, 2008 8:20 PM

Please post the complete exception. In order to do this, catch the exception (let’s call it «ex»), then post here the output of ex.ToString().

These exceptions have much more detail, which will tell you exactly where the problem is. John Saunders | Use File->New Project to create Web Service Projects

Thanks for the reply.Below is the entire exception

Its giving the error for all the classes and functions saying that they can not be reflected. This Web Service is written in Java. I’m not familiar on what is this Reflection means and why it is used. I added this web service as a Web Reference to this project which is in Managed C++ 2003

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There was an error reflecting field

Answered by:

Question

i’m working .NetFramework4 Client Profile / Visual Studio 2010 Ultimate / Windows7.

I want to read some xx.trx files. TRX file is Test Result File of Microsoft Unit Test Framework.

Generated runtime classes from an XSD schema file using by ‘XML Schema Definition Tool(Xsd.exe)’ for Microsoft Unit Test Result File( XX.TRX) and Schema File(vstst.xsd).

And programmmed this code.

public void ReadTrxFileContents(string filePath)
<
XmlSerializer serializer = new XmlSerializer(typeof(TestRunType)); // But exception occured ‘There was an error reflecting type..’
TestRunType xmlTestRunType = serializer.Deserialize(new StreamReader(filePath)) as TestRunType;

// add custom code
Debug.WriteLine(«id : » + xmlTestRunType.id + «n»);
Debug.WriteLine(«name : » + xmlTestRunType.name + «n»);
Debug.WriteLine(«runuser : » + xmlTestRunType.runUser + «n»);
>

Why occured exception ?

XmlSerializer serializer = new XmlSerializer(typeof(TestRunType)); // But exception occured ‘There was an error reflecting type..’

I added also a parameterless constructor.
TestRunType Definition is .

///
[System.CodeDom.Compiler.GeneratedCodeAttribute(«xsd», «4.0.30319.1»)]
[System.SerializableAttribute()]
[System.Diagnostics.DebuggerStepThroughAttribute()]
[System.ComponentModel.DesignerCategoryAttribute(«code»)]
[System.Xml.Serialization.XmlTypeAttribute(Namespace=»http://microsoft.com/schemas/VisualStudio/TeamTest/2010″)]
[System.Xml.Serialization.XmlRootAttribute(«TestRun», Namespace=»http://microsoft.com/schemas/VisualStudio/TeamTest/2010″, IsNullable=false)]
public partial class TestRunType <
// add a parameterless constructor
public TestRunType()

private object[] itemsField;

private string idField;

private string nameField;

private string runUserField;

private int tcmPassIdField;

private bool tcmPassIdFieldSpecified;

///
[System.Xml.Serialization.XmlElementAttribute(«Build», typeof(TestRunTypeBuild))]
[System.Xml.Serialization.XmlElementAttribute(«ResultSummary», typeof(TestRunTypeResultSummary))]
[System.Xml.Serialization.XmlElementAttribute(«Results», typeof(ResultsType))]
[System.Xml.Serialization.XmlElementAttribute(«TestDefinitions», typeof(TestRunTypeTestDefinitions))]
[System.Xml.Serialization.XmlElementAttribute(«TestEntries», typeof(TestEntriesType1))]
[System.Xml.Serialization.XmlElementAttribute(«TestLists», typeof(TestRunTypeTestLists))]
[System.Xml.Serialization.XmlElementAttribute(«TestRunConfiguration», typeof(TestRunConfiguration))]
[System.Xml.Serialization.XmlElementAttribute(«TestSettings», typeof(TestSettingsType))]
[System.Xml.Serialization.XmlElementAttribute(«Times», typeof(TestRunTypeTimes))]
[System.Xml.Serialization.XmlElementAttribute(«UserData», typeof(System.Xml.XmlElement))]
public object[] Items <
get <
return this.itemsField;
>
set <
this.itemsField = value;
>
>

///
[System.Xml.Serialization.XmlAttributeAttribute()]
public string id <
get <
return this.idField;
>
set <
this.idField = value;
>
>

///
[System.Xml.Serialization.XmlAttributeAttribute()]
public string name <
get <
return this.nameField;
>
set <
this.nameField = value;
>
>

///
[System.Xml.Serialization.XmlAttributeAttribute()]
public string runUser <
get <
return this.runUserField;
>
set <
this.runUserField = value;
>
>

///
[System.Xml.Serialization.XmlAttributeAttribute()]
public int tcmPassId <
get <
return this.tcmPassIdField;
>
set <
this.tcmPassIdField = value;
>
>

///
[System.Xml.Serialization.XmlIgnoreAttribute()]
public bool tcmPassIdSpecified <
get <
return this.tcmPassIdFieldSpecified;
>
set <
this.tcmPassIdFieldSpecified = value;
>
>
>

Answers

I catch some bugs.

I checked the inner exception for more details. And Last Bug message is.

‘There was an error reflecting type ‘CodedWebTestElementType’ , Member ‘CodedWebTestElementType.Items’ hides inherited member ‘BaseTestType.Items’, but has different custom attributes.

So i kill some code.

1) ‘Items’ of CodedWebTestElementType class

2) ‘Items’ of GenericTestType class

And then program is good runnned !! I can read ‘trx’. Thanks.

XmlSerializer serializer = new XmlSerializer(typeof(TestRunType)); // exception occured ‘There was an error reflecting type TestRunType’

Other Type is no problem.

i’m working .NetFramework4 Client Profile / Visual Studio 2010 Ultimate / Windows7.

I want to read some xx.trx files. TRX file is Test Result File of Microsoft Unit Test Framework.

Generated runtime classes from an XSD schema file using by ‘XML Schema Definition Tool(Xsd.exe)’ for Microsoft Unit Test Result File( XX.TRX) and Schema File(vstst.xsd).

And programmming code is..

public void ReadTrxFileContents(string filePath)
<
XmlSerializer serializer = new XmlSerializer(typeof(TestRunType)); // But exception occured ‘There was an error reflecting type..’
TestRunType xmlTestRunType = serializer.Deserialize(new StreamReader(filePath)) as TestRunType;

// add custom code
Debug.WriteLine(«id : » + xmlTestRunType.id + «n»);
Debug.WriteLine(«name : » + xmlTestRunType.name + «n»);
Debug.WriteLine(«runuser : » + xmlTestRunType.runUser + «n»);
>

Why occured exception ?

XmlSerializer serializer = new XmlSerializer(typeof(TestRunType)); // But exception occured ‘There was an error reflecting type TestRunType’

I added also a parameterless constructor.
TestRunType Definition is .

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Error on executing DB command

Error on executing DB command

I receive the following error message with automation:

Error on executing DB command: System.InvalidOperationException: There was an error reflecting type ‘NinjaTrader.NinjaScript.Strategies.Testsystem’. —> System.InvalidOperationException: There was an error reflecting field ‘entryOrder’. —> System.InvalidOperationException: There was an error reflecting type ‘NinjaTrader.Cbi.Order’. —> System.InvalidOperationException: There was an error reflecting property ‘UserData’. —> System.InvalidOperationException: There was an error reflecting type ‘System.Xml.Linq.XDocument’. —> System.InvalidOperationException: Cannot serialize member ‘System.Xml.Linq.XDocument.Declaration’ of type ‘System.Xml.Linq.XDeclaration’, see inner exception for more details. —> System.InvalidOperationException: System.Xml.Linq.XDeclaration cannot be serialized because it does not have a parameterless constructor. — End of inner exception stack trace — at System.Xml.Serialization.StructModel.CheckSupporte dMember(TypeDesc typeDesc, MemberInfo member, Type type) at System.Xml.Serialization.StructModel.GetPropertyMo del(PropertyInfo propertyInfo) at System.Xml.Serialization.StructModel.GetFieldModel (MemberInfo memberInfo) at System.Xml.Serialization.XmlReflectionImporter.Ini tializeStructMembers(StructMapping mapping, StructModel model, Boolean openModel, String typeName, RecursionLimiter limiter) at System.Xml.Serialization.XmlReflectionImporter.Imp ortStructLikeMapping(StructModel model, String ns, Boolean openModel, XmlAttributes a, RecursionLimiter limiter) at System.Xml.Serialization.XmlReflectionImporter.Imp ortTypeMapping(TypeModel model, String ns, ImportContext context, String dataType, XmlAttributes a, Boolean repeats, Boolean openModel, RecursionLimiter limiter) — End of inner exception stack trace — at System.Xml.Serialization.XmlReflectionImporter.Imp ortTypeMapping(TypeModel model, String ns, ImportContext context, String dataType, XmlAttributes a, Boolean repeats, Boolean openModel, RecursionLimiter limiter) at System.Xml.Serialization.XmlReflectionImporter.Imp ortAccessorMapping(MemberMapping accessor, FieldModel model, XmlAttributes a, String ns, Type choiceIdentifierType, Boolean rpc, Boolean openModel, RecursionLimiter limiter) at System.Xml.Serialization.XmlReflectionImporter.Imp ortFieldMapping(StructModel parent, FieldModel model, XmlAttributes a, String ns, RecursionLimiter limiter) at System.Xml.Serialization.XmlReflectionImporter.Ini tializeStructMembers(StructMapping mapping, StructModel model, Boolean openModel, String typeName, RecursionLimiter limiter) — End of inner exception stack trace — at System.Xml.Serialization.XmlReflectionImporter.Ini tializeStructMembers(StructMapping mapping, StructModel model, Boolean openModel, String typeName, RecursionLimiter limiter) at System.Xml.Serialization.XmlReflectionImporter.Imp ortStructLikeMapping(StructModel model, String ns, Boolean openModel, XmlAttributes a, RecursionLimiter limiter) at System.Xml.Serialization.XmlReflectionImporter.Imp ortTypeMapping(TypeModel model, String ns, ImportContext context, String dataType, XmlAttributes a, Boolean repeats, Boolean openModel, RecursionLimiter limiter) — End of inner exception stack trace — at System.Xml.Serialization.XmlReflectionImporter.Imp ortTypeMapping(TypeModel model, String ns, ImportContext context, String dataType, XmlAttributes a, Boolean repeats, Boolean openModel, RecursionLimiter limiter) at System.Xml.Serialization.XmlReflectionImporter.Imp ortAccessorMapping(MemberMapping accessor, FieldModel model, XmlAttributes a, String ns, Type choiceIdentifierType, Boolean rpc, Boolean openModel, RecursionLimiter limiter) at System.Xml.Serialization.XmlReflectionImporter.Imp ortFieldMapping(StructModel parent, FieldModel model, XmlAttributes a, String ns, RecursionLimiter limiter) at System.Xml.Serialization.XmlReflectionImporter.Ini tializeStructMembers(StructMapping mapping, StructModel model, Boolean openModel, String typeName, RecursionLimiter limiter) — End of inner exception stack trace — at System.Xml.Serialization.XmlReflectionImporter.Ini tializeStructMembers(StructMapping mapping, StructModel model, Boolean openModel, String typeName, RecursionLimiter limiter) at System.Xml.Serialization.XmlReflectionImporter.Imp ortStructLikeMapping(StructModel model, String ns, Boolean openModel, XmlAttributes a, RecursionLimiter limiter) at System.Xml.Serialization.XmlReflectionImporter.Imp ortTypeMapping(TypeModel model, String ns, ImportContext context, String dataType, XmlAttributes a, Boolean repeats, Boolean openModel, RecursionLimiter limiter) — End of inner exception stack trace — at System.Xml.Serialization.XmlReflectionImporter.Imp ortTypeMapping(TypeModel model, String ns, ImportContext context, String dataType, XmlAttributes a, Boolean repeats, Boolean openModel, RecursionLimiter limiter) at System.Xml.Serialization.XmlReflectionImporter.Imp ortElement(TypeModel model, XmlRootAttribute root, String defaultNamespace, RecursionLimiter limiter) at System.Xml.Serialization.XmlReflectionImporter.Imp ortTypeMapping(Type type, XmlRootAttribute root, String defaultNamespace) at System.Xml.Serialization.XmlSerializer..ctor(Type type, String defaultNamespace) at NinjaTrader.NinjaScript.StrategyBase.ToXml() at NinjaTrader.NinjaScript.StrategyBase.DbAdd() at NinjaTrader.NinjaScript.StrategyBase.DbUpdate() at NinjaTrader.Cbi.DB.DBThread().

Any idea why I get this error message? Unfortunately NinjaTrader does not indicate the line in the code where the error has occured.

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