c# - where is the error. LINQ to XML -

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where error here . in bottom of code .

error 1 use of unassigned local variable 'interfaces' 

public static void create_interfaces() {       xdocument interfaces;     list<string> intf = new list<string>{"em0","em1","em2"};      foreach (var in intf)     {         interfaces = new xdocument(       new xelement("interfaces",         new xelement("interface",           new xelement("name", i),           new xelement("vlan-tagging", xelement.emptysequence),           new xelement("unit",           new xelement("vlan-id", "10"),           new xelement("family", new xelement("inet", new xelement("address", new xelement("name", "10.10.1.23/24"))))))));     }     interfaces.save("interfaces.xml");  }

the c# compiler not smart are. though know there loop through, compiler not.

because of this, compiler thinks there chance intf empty in case interfaces never assigned. since trying call save(..); on interfaces after loop, compiler complains.

that being said, seems reassigning interfaces in every loop, without using result previous iterations(thereby throwing away previous iterations xdocuments). intentional?


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