WPF, Consuming Wdsl meta, Codedom compilation problem

Question

I am tryin to consume wdsl with a mex client. To compile it an use it without references. But i am getting compiler errors regarding "CS0246: The type or namespace name 'schema' could not be found".

I use a mexclient to import the contract

    MetadataExchangeClient mexClient = new MetadataExchangeClient(binding);

    mexClient.ResolveMetadataReferences = true;
    mexClient.MaximumResolvedReferences = 1000;
    var metaSet = mexClient.GetMetadata(mexAddress, mexMode);

    WsdlImporter importer = new WsdlImporter(metaSet);
    result.ContractDescriptions = importer.ImportAllContracts();
    result.AllEndpoints = importer.ImportAllEndpoints();

then i generate and compile it.

    CodeCompileUnit unit = (CodeCompileUnit)importer.State[typeof(CodeCompileUnit)];
    ServiceContractGenerator generator = new ServiceContractGenerator(unit);

    foreach (ContractDescription contract in result.ContractDescriptions)
    {
      generator.GenerateServiceContractType(contract);
    }

    // Generate a code file for the contracts.
    CodeGeneratorOptions codeGeneratorOptions = new CodeGeneratorOptions();
    codeGeneratorOptions.BracingStyle = "C";

    // Create Compiler instance of a specified language.
    CompilerResults results;
    using (CodeDomProvider codeDomProvider = CodeDomProvider.CreateProvider("CSharp"))
    {

     CompilerParameters compilerParameters = new CompilerParameters(new string[] { 
        "System.dll", 
        "System.Data.dll", 
        "System.ServiceModel.dll", 
        "System.Runtime.Serialization.dll", 
        "System.Xml.dll", 
        "System.Xml.Linq.dll", 
        "System.Xml.Serialization.dll" });

      compilerParameters.GenerateInMemory = true;
      compilerParameters.GenerateExecutable = false;
      compilerParameters.WarningLevel = 1;
      compilerParameters.TempFiles = new TempFileCollection("Compile", true);

      results = codeDomProvider.CompileAssemblyFromDom(compilerParameters, generator.TargetCompileUnit);
}

This result in error CS0246: The type or namespace name 'schema' could not be found (are you missing a using directive or an assembly reference?)

When i look att the generated code i can se this unkown type

    /// <remarks/>
    [System.CodeDom.Compiler.GeneratedCodeAttribute("BfusTester", "1.0.0.0")]
    [System.SerializableAttribute()]
    [System.Diagnostics.DebuggerStepThroughAttribute()]
    [System.ComponentModel.DesignerCategoryAttribute("code")]
    [System.Xml.Serialization.XmlTypeAttribute(AnonymousType=true,     Namespace="http://www.logica.com/BusinessForUtilities/2012/LoggerService")]
public partial class TestDS {
    
        private schema schemaField;
    
        private System.Xml.XmlElement anyField;
    
        /// <remarks/>
        [System.Xml.Serialization.XmlElementAttribute(Namespace="http://www.w3.org/2001/XMLSchema",     Order=0)]
        public schema schema {
            get {
                return this.schemaField;
            }
            set {
                this.schemaField = value;
            }
        }
    
        /// <remarks/>
        [System.Xml.Serialization.XmlAnyElementAttribute(Order=1)]
        public System.Xml.XmlElement Any {
            get {
                return this.anyField;
            }
            set {
                this.anyField = value;
            }
        }
    }

Where the line "private schema schemaField;" contains an unknown type. The method looks like this in the implementation

In interface

    [OperationContract]
    DataSet Test(DataSet ds);

And in service

    public DataSet Test(DataSet ds)
    {
      return new DataSet();
    }

It is just standard System.Data.DataSet. The interface is sadly not mine to edit.

I´m trying to tweak some options or referenced assembly on the ServiceContractGenerator and/or CodeDomProvider but without luck. It seems to me that it´s some kind of xml serialization issue. Hope someone can give me som tips!

So a few days later!

I can see that the method with DataSet that causes the issue in CodeDom generation uses "literal" types.

<wsdl:operation name="Test2">
        <soap12:operation soapAction="http://www.logica.com/BusinessForUtilities/2012/LoggerService/ILoggerService/Test2" style="document"/>
        <wsdl:input>
            <soap12:body use="literal"/>
        </wsdl:input>
        <wsdl:output>
            <soap12:body use="literal"/>
        </wsdl:output>
    </wsdl:operation>

What i have read this tells the "ServiceContractGenerator" to look for types in a literal way. So if it´s wrong, i possibly need to tell the WsdlImporter or ServiceContractGenerator where to look for the DataSet type. But i don´t know how!