Class to read/write xml file

I need a class written with the following capabilities: 1) read xml file 2) search for specified element, 3) update specified element ? ? ? 3a.? add additional elements as required 4) write changes to XML file For example: ? ? ? <ContainedComponent> ? ? ? ? ? <Name>CustomersTitle</Name> ? ? ? ? ? <Type>Html</Type> ? ? ? ? ? <PassthroughAttributes> ? ? ? ? ? ? ? <Attribute> ? ? ? ? ? ? ? ? ? <Name>HtmlEncodeWhiteSpace</Name> ? ? ? ? ? ? ? ? ? <Value>True</Value> ? ? ? ? ? ? ? </Attribute> ? ? ? ? ? ? ? <Attribute> ? ? ? ? ? ? ? ? ? <Name>Text</Name> ? ? ? ? ? ? ? ? ? <Value><%#GetResourceValue("Translate:AddCustomers") %></Value> ? ? ? ? ? ? ? </Attribute> ? ? ? ? ? </PassthroughAttributes> ? ? ? ? ? <InsideControl>CustomersRecordControl</InsideControl> ? ? ? </ContainedComponent> Example: for the element "ContainedComponent", this has a subelement called "PassthroughAttributes".? The subelement has an <attribute> with a <name> and <value> element.? I want to be able to search for this, and then update the <Value> entry. ## Deliverables see attached examples of two XML files that need updating.? I also need a menu sitemap updated in a similiar fashion.? See attached.