Best approach to deserializing nested elements.

[=?Utf-8?B?SmVyZW15X0I=?=]

I am working on an order entry program and have a question related to
deserializing nodes with nested elements.

The purchase order contains multiple line items which I select using an
XmlNodeList. I am trying to deserialize the nodes using a foreach as follows:

foreach(XmlNode lineItem in LineItemsNodeList)

An abbreviated example of the nested lineItem node looks like this:

<LineItem>
<OrderLine>
<LineSequenceNumber>1</LineSequenceNumber1>
<PartQualifier1>BP</PartQualifier1>
<PartNumber1>BTI318</PartNumber1>
<OrderQuantity>6</OrderQuantity>
<UnitPrice>12.50</UnitPrice>
</OrderLiine>
<Reference>
<Description>HAPPY BIRTHDAY JOHN</Description>
</Reference>
</LineItem>

I have created an object to represent the Xml node with
[XmlRoot("LineItem")] and [XmlElement("ElementName")] for each of the other
elements.

I read the element into an XmlReader, create a serializer object, and then
deserialize the node.

My question is, should I deserialize the entire nested node, or should I
create two seperate objects to deserialize: One for the <OrderLinesection,
and one for the <Referencesection?

When trying to deserialize the entire nested node, the value of
<LineSequenceNumbergets assigned to <OrderLine>. What am I doing wrong?
What is the correct way to deal with this?

--
Jeremy
--
Jeremy

[=?Utf-8?B?SmVyZW15X0I=?=]

"Jeremy_B" wrote:

I am working on an order entry program and have a question related to
deserializing nodes with nested elements.

The purchase order contains multiple line items which I select using an
XmlNodeList. I am trying to deserialize the nodes using a foreach as follows:

foreach(XmlNode lineItem in LineItemsNodeList)

An abbreviated example of the nested lineItem node looks like this:

<LineItem>
<OrderLine>
<LineSequenceNumber>1</LineSequenceNumber1>
<PartQualifier1>BP</PartQualifier1>
<PartNumber1>BTI318</PartNumber1>
<OrderQuantity>6</OrderQuantity>
<UnitPrice>12.50</UnitPrice>
</OrderLiine>
<Reference>
<Description>HAPPY BIRTHDAY JOHN</Description>
</Reference>
</LineItem>

I have created an object to represent the Xml node with
[XmlRoot("LineItem")] and [XmlElement("ElementName")] for each of the other
elements.

I read the element into an XmlReader, create a serializer object, and then
deserialize the node.

My question is, should I deserialize the entire nested node, or should I
create two seperate objects to deserialize: One for the <OrderLinesection,
and one for the <Referencesection?

When trying to deserialize the entire nested node, the value of
<LineSequenceNumbergets assigned to <OrderLine>. What am I doing wrong?
What is the correct way to deal with this?

--
Jeremy

I found a great example on MSDN that pointed me in the right direction
(scroll to the bottom for the PO example.
http://msdn2.microsoft.com/en-us/lib...wa(vs.80).aspx

The trick for deserializing the Xml nodes with nested elements (complex
types) is to create a class for each node <OrderLineand <Reference>, as
well as a class for the complex node <LineItem>. The class for <LineItem>
contains the object classes for the <OrderLineand <Reference>. Below is an
example of the classes.

[XmlRootAttribute("LineItem")]
public class LineItemComplete
{
[XmlElement("OrderLine")]
public SerOrderLine orderLine;

[XmlElement("Reference")]
public SerLineRef lineRef;
}
public class SerLineRef
{
private string _description;

public SerLineRef()
{
}

public string Description
{
get { return _description; }
set { _description = value; }
}
}

public class SerOrderLine
{
public string LineSequenceNumber;
public string PartNumberQualifier1;
public string PartNumber1;
public string OrderQty;
public string OrderQtyUOM;
public string UnitPrice;
}

For berevity sake, I did not put the Get Set methods on the class
SerOrderLine, but it would be exactly the same as I put for the SerLinRef
class.

When I deserialze the node, it is done with a type of LineItemComplete.

Hope this helps with anyone else who may be searching.

Jeremy