f# - How do I edit an XML file using type providers? -

i understand how retrieve data xml source using type providers. however, need modify particular part of xml , save disk. have tried assigning value node using <- property read-only.

for example:

let doc = myxml.load filename doc.itemid.id <- "newid" // doesn't work doc |> savexml 

there similar question json suggestion create new object, xml.

while researching question found can use .xelement accessor reference mutable xelement object. solution is:

let doc = myxml.load filename doc.itemid.xelement.element(xname.get "id").value <- "newid" // tada doc.xdocument.save(...) 

note have use .xelement accessor on parent if you're modifying leaf node. because leaf node's type primitive , doesn't have .xelement accessor of own. slight shame, suppose makes life easier on other side when want read-only access value.