XSD byte[][] issue on Web Service - xsd

Question

I'm trying to pass to my web service something like an array of byte array (byte[][]) to do that i created this xsd file:
<?xml version="1.0" encoding="utf-8"?>
<xs:schema id="FileResponse"
targetNamespace="http://tempuri.org/FileResponse.xsd"
elementFormDefault="qualified"
xmlns="http://tempuri.org/FileResponse.xsd"
xmlns:mstns="http://tempuri.org/FileResponse.xsd"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
>
<xs:complexType name="FileResponse">
<xs:sequence>
<xs:element name="SPResultItem" maxOccurs="unbounded">
<xs:complexType>
<xs:sequence>
<xs:element name="file" type="xs:unsignedByte" minOccurs="0" maxOccurs="unbounded"></xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="Message" type="xs:string"></xs:element>
</xs:sequence>
</xs:complexType>
<xs:element name="FileResponse" type="FileResponse"/>
</xs:schema>
XSD tool generates this:
/// <remarks/>
[System.CodeDom.Compiler.GeneratedCodeAttribute("xsd", "2.0.50727.3038")]
[System.SerializableAttribute()]
[System.Diagnostics.DebuggerStepThroughAttribute()]
[System.ComponentModel.DesignerCategoryAttribute("code")]
[System.Xml.Serialization.XmlTypeAttribute(Namespace="http://tempuri.org/FileResponse.xsd")]
[System.Xml.Serialization.XmlRootAttribute(Namespace="http://tempuri.org/FileResponse.xsd", IsNullable=false)]
public partial class FileResponse {
private FileResponseSPResultStatus sPResultStatusField;
private sbyte[][] sPResultItemField;
private string messageField;
/// <remarks/>
public FileResponseSPResultStatus SPResultStatus {
get {
return this.sPResultStatusField;
}
set {
this.sPResultStatusField = value;
}
}
/// <remarks/>
[System.Xml.Serialization.XmlArrayItemAttribute("file", typeof(sbyte), IsNullable=false)]
public sbyte[][] SPResultItem {
get {
return this.sPResultItemField;
}
set {
this.sPResultItemField = value;
}
}
/// <remarks/>
public string Message {
get {
return this.messageField;
}
set {
this.messageField = value;
}
}
}
As you can see, the conversion seems good: the xsd contains a "sbyte[][]" field... But when i call a method from this webservice (even if it doesn't use this class) it crashes without giving infos...
How can i create an XSD that receives a sbyte[][] or byte[][] and works? Thank you very much!!

Answer 1

I solved this way:
<?xml version="1.0" encoding="utf-8"?>
<xs:schema id="FileResponse"
targetNamespace="http://tempuri.org/FileResponse.xsd"
elementFormDefault="qualified"
xmlns="http://tempuri.org/FileResponse.xsd"
xmlns:mstns="http://tempuri.org/FileResponse.xsd"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
>
<xs:complexType name="FileResponse">
<xs:sequence>
<xs:element name="SPResultItem" type="fileList" maxOccurs="unbounded"> </xs:element>
<xs:element name="Message" type="xs:string"></xs:element>
</xs:sequence>
<xs:complexType name ="fileList">
<xs:sequence>
<xs:element name="file" type="xs:base64Binary" ></xs:element>
</xs:sequence>
</xs:complexType>
<xs:element name="FileResponse" type="FileResponse"/>