Inheriting XMLNodelist

Question

 

Hi all,

         I was able to derive/inherit the XmlDocument and XmlElement as MyDocument and MyElement respectively. But now I want to inherit the XmlNodelist calls to my custom class as MyElementList so that I can return the output of SelectNodes(BCL returns as XmlNodeList) as MyElementList.

 

MyDocument : XmlDocument

{

new MyElementList  SelectNodes(string xpath)

{

return (MyElementList)base.SelectNodes(xpath);

}

}

 

MyElement : XmlElement

{

}

 

MyElementList : XmlNodeList

{

 

}

 

Any help/suggestion on this is appreciated.

 

Thanks

Gabi

Answer 1

I think you need to implement IEnumerable interface on your XmlNodeList and add a constructor which can accept XmlNodeList. Then your SelectNodes implementation would look as follows:

 

Code Snippet

new MyElementList SelectNodes(string xpath)

{

return new MyElementList(base.SelectNodes(xpath));

}

 

Out of curiosity - why do you need to derive from these Xml classes?

 

Pawel

Answer 2

Pawel,

            Thanks for your timely help. I am deriving this class such that developers can use only the custom class.

 

 

Thanks

Gabriel