Issue building an XML document using TXMLDocument

Question

I\'m new to delphi and now I have to read create an xml. my code is the following:

function foo.createXMLDocument(): TXMLDocument;
var
  res: TXMLDocument;
          


        

Answer 1

In my similar implementation, I declare res as IXMLDocument instead of TXMLDocument.

var
   XMLDoc: IXMLDocument;
.
.
   XMLDoc := TXMLDocument.Create(nil);
   XMLDoc.Active := True;
.
.
   XMLDoc.SaveToFile(Filename);
   XMLDoc.Active := False;