Return xml file in WCF without reading to the memory

[drskywalker]

I have a XML file (size of 10MB~), I want to return it as a \[code\]XmlDocument\[/code\] type in my WCF service, but without to load it to memory before, because there are many people who request this file, so server can get an \[code\]OutOfMemory\[/code\] exception.Is it possible at all?