Question

I’m working on a Webservice to share data between 2 ERP-systems. First ERP calls the webservice, which serializes the data-object and sends it to the second ERP.

A data object looks like this:

    <xs:complexType name='Parent'>         <xs:sequence>             <xs:element ref='ta:ReceiptLine' maxOccurs='unbounded'/>         </xs:sequence>     </xs:complexType>     <xs:complexType name='Child'>         <xs:sequence>             ...             <xs:element name='SerialNo' type='xs:string' nillable='true' minOccurs='0'/>             <xs:element name='Quantity' type='xs:int' nillable='false'/>             ...         </xs:sequence>     </xs:complexType>     ...     <xs:element name='Child' type='ta:Child' nillable='true'/> 

The classes generated by XSD:

[System.Serializable]     [System.Xml.Serialization.XmlTypeAttribute(Namespace='http://FSM4TA/DataObjects/')]     [System.Xml.Serialization.XmlRootAttribute(Namespace='http://FSM4TA/DataObjects/', IsNullable=false)] public partial class Parent {     private Child[] child;      [System.Xml.Serialization.XmlElementAttribute('Child', IsNullable=true)]         public Child[] Child {             get {return this.child;}             set {this.child = value;} }  [System.Serializable]     [System.Xml.Serialization.XmlTypeAttribute(Namespace='http://FSM4TA/DataObjects/')]     [System.Xml.Serialization.XmlRootAttribute(Namespace='http://FSM4TA/DataObjects/', IsNullable=true)]     public partial class Child{         private string serialNo;         private int quantity;          [System.Xml.Serialization.XmlElementAttribute(IsNullable=true)]         public string SerialNo {             get {return this.serialNo;}             set {this.serialNo = value;}         }          public int Quantity {             get { return this.quantity;}             set {this.quantity = value;}         } } 

I’m serializing my data objects with XmlSerializer

The Problem Is: (On serialization) Every time in case of the Child object is empty (xsi:nil=’true’) XSD generates the whole Child structure anyway. And because Quantity is not nillable/nullable XSD writes 0 as value… Like this:

<Parent>   <Child xsi:nil='true'>     <SerialNo xsi:nil='true' />     <Quantity>0</Quantity>   </Child> </Parent> 

I expected to get something like this:

<Parent>   </Child xsi:nil='true'> </Parent> 

The Question Is: Is there a way to prevent XSD from parsing an xsi:nil=’true’-Object ??

Any suggestions?

TIA

Answer 1

ok,

I got it now! You have to mark the Quantity property with the XmlElementAttribute explicitly!

[XmlElement(IsNullable=false)] public int Quantity {         get { return this.quantity;}         set {this.quantity = value;}     } 

No idea why this hasn’t been generated automatically…