Webservice does not serialize all properties of the request

Question

Hei all,

I noticed a strange behavior of my SOAP Webservice.

When sending the request via soap ui i filled every property of the object.

While debugging the webservice only a few properties where filled. It seems the top 5 properties, out of 15, are filled. When switching the properties in the Soap request, again the top 5 are filled.

Does anyone have a clue, why the serializing of the request object is not working ?

The interfaces are defined as OperationContract , properties and the request class as DataMember / DataContract.

Here is the Request Class

[DataContract]
public class Article
{
    [DataMember]
    public String ArticleName
    {
        get { return _ArticleName; }
        set { _ArticleName = value; }
    }

    [DataMember]
    public String Description
    {
        get { return _Description; }
        set { _Description = value; }
    }

    [DataMember]
    public Int ProductSubGroupNumber
    {
        get { return _ProductSubGroupNumber; }
        set { _ProductSubGroupNumber = value; }
    }

    [DataMember]
    public Double ArticleNumber
    {
        get { return _ArticleNumber; }
        set { _ArticleNumber = value; }
    }

    [DataMember]
    public Int Color
    {
        get { return _Color; }
        set { _Color = value; }
    }

    [DataMember]
    public Double Quantity
    {
        get { return _Quantity; }
        set { _Quantity = value; }
    }

    [DataMember]
    public Int Version
    {
        get { return _Version; }
        set { _Version = value; }
    }

    [DataMember]
    public Int Material
    {
        get { return _Material; }
        set { _Material = value; }
    }

    [DataMember]
    public Int Warehouse
    {
        get { return _Warehouse; }
        set { _Warehouse = value; }
    }
}

And the Soap Request

      <CreateArticle>
     <ArticleGroup>1232456789</ArticleGroup>
     <Articles>
        <Article>
           <ArticleName>test</ArticleName>
           <Description>TEST 1213123</Description>
           <ProductSubGroupNumber>987654</ProductSubGroupNumber>
           <ArticleNumber>12345</ArticleNumber>
           <Color>0</Color>
           <Quantity>1</Quantity>
           <Material>0</Material>
           <Warehouse>0</Warehouse>
           <Version>0</Version>
        </Article>
     </Articles>
  </CreateArticle>

In the debugger are only Attributes till Color filled - the rest is Null. If I swap them in the request, other are Filled and others not.

The Request Contains a ArticleGroupID as Int and an Array of Articles.

Answer 1

It looks like this is DataContractSerializer's fussy "order" enforcement. It really really wants to know what order the data will be in. You could try educating it:

[DataMember(Order=0)]
public string ArticleName {get;set;}

[DataMember(Order=1)]
public string Description {get;set;}

[DataMember(Order=2)]
public int ProductSubGroupNumber {get;set;}

[DataMember(Order=3)]
public double ArticleNumber {get;set;}

[DataMember(Order=4)]
public int Color {get;set;}

[DataMember(Order=5)]
public double Quantity {get;set;}

[DataMember(Order=8)]
public int Version {get;set;}

[DataMember(Order=6)]
public int Material {get;set;}

[DataMember(Order=7)]
public int Warehouse {get;set;}