Request assistance in extracting data from XML document

[MHutcheon]

Hi All,

Hope someone can help.

I have an XML doc which reads:

<?xml version="1.0" encoding="ISO-8859-1" ?>		
		
<TacRef>		
	<TacRefData Num="0">	
		<MainData>
			<CategoryId>8200</CategoryId>
			<SubCategoryId>8230</SubCategoryId>
			<ClassTable>1432</ClassTable>
		</MainData>
	</TacRefData>
	<TacRefData Num="1">	
		<MainData>
			<CategoryId>8400</CategoryId>
			<SubCategoryId>8410</SubCategoryId>
			<ClassTable>832</ClassTable>
		</MainData>
	</TacRefData>
	<TacRefData Num="2">	
		<MainData>
			<CategoryId>8800</CategoryId>
			<SubCategoryId>8610</SubCategoryId>
			<ClassTable>22382</ClassTable>
		</MainData>
	</TacRefData>
...
</TacRef>

from which I am trying to extract data using the following code:

Dim myReader As XDocument = XDocument.Load("TacRefDB.xml")

For Each TacRefData In myReader.Root.Descendants("TacRefData")

    TacRefDataNbr = TacRefData.Attribute("Num").Value
    CategoryID = TacRefData.Descendants("MainData").Elements("CategoryID").Value
    SubCategoryID = TacRefData.Descendants("MainData").Elements("SubCategoryID").Value
    ClassTable = TacRefData.Descendants("MainData").Elements("ClassTable").Value
Next

Once I have the variables read in I would store them in a collection of some description.

The issue I have is I can read the individual TacRefData.Attribute("Num").Value - this will return 0, 1, 2, 3, 4... etc. but for my CategoryID, SubCategoryID and ClassTable everything is returned as Nothing.

If anyone could point out what I'm doing wrong it would be appreciated.

Regards

EDIT

User error - I was looking for CategoryID instead of CategoryId. I'm an idiot...