Constructing / Updating a message in Loop of BizTalk Orchestration

Question

Hi,
I have case where i need to to iterate a message received by Orchestration and validate each individual record of that message. Based on result of validation I need to mark a <STATUS> in the same message as Valid or Invalid. Later I need to use this
message for filtering Valid records for futher actions.
Please help on ideas how to achieve it.
Example / Sample
Received Message By Orchestartion
<Items>
<Item>
<ID>11</ID>
<STATUS></STATUS>
</Item>
<Item>
<ID>12</ID>
<STATUS></STATUS>
</Item>
<Item>
<ID>13</ID>
<STATUS></STATUS>
</Item>
</Items>
The Item node will be looped and checked for status against ID. This will be done using a method which will receive ID and return STATUS. I need to update back the STATUS in orginal message and then consume following message in the same orchestration.
Expected Message after LOOP
<Items>
<Item>
<ID>11</ID>
<STATUS>VALID</STATUS>
</Item>
<Item>
<ID>12</ID>
<STATUS>VALID</STATUS>
</Item>
<Item>
<ID>13</ID>
<STATUS>INVALID</STATUS>
</Item>
</Items>
Any help will be highly appriciated
umair_bs

Answer 1

You have two options,
Do it in orchestration, loop through the item(s) node and update the Status field based on your validation logic using XPath
Or more simple option, pass the message to a .NET helper as below where you can apply your validation logic and update the XML file and .NET helper can return a XMLDocument which you can use in
Message-Assignment shape under Construct shape to construct a update message.
public static XmlDocument ContractUpdateStatusMsg(XmlDocument inXML)
XmlNodeList items = inXML.SelectNodes("/*[local-name()='Items' and namespace-uri()='']/*[local-name()='Item' and namespace-uri()='']");
foreach (XmlNode item in items)
//If condition can be contructed based on your validation logic
//where you send the value of ID to another methods which retrun or false
if (item.SelectSingleNode("ID").InnerText == "11")
item.SelectSingleNode("STATUS").InnerText = "VALID";
else
item.SelectSingleNode("STATUS").InnerText = "INVALID";
return inXML;
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