How to convert xml attribute to custom object during deserialization in C# using XmlSerializer -

i

invalidcastexception: value not convertible object: system.string idtag

while attempting deserialize xml attribute.

here's sample xml:

<?xml version="1.0" encoding="windows-1250"?> <arrayofitem xmlns:xsi="http://www.w3.org/2001/xmlschema-instance" xmlns:xsd="http://www.w3.org/2001/xmlschema">   <item name="item name" parentid="sampleid" /> </arrayofitem> 

sample classes:

public class item {    [xmlattribute]    public string name { get; set; }     [xmlattribute]    public idtag parentid { get; set; } }  [serializable] public class idtag {     public string id; } 

the exception thrown convert.totype() method (which called xmlserializer). afaik there no way "implement" iconvertible interface system.string convert idtag. know can implement proxy property i.e:

public class item {     [xmlattribute]     public string name {get; set;}      [xmlattribute("parentid")]     public string _parentid { get; set; }      [xmlignore]     public idtag parentid      {          { return new idtag(_parentid); }          set { _parentid = value.id; }     } } 

is there other way?

you have tell xmlserializer string needs in idtag object. presumably, there's property of object want serialized (not whole object).

so, change this:

[xmlattribute] public idtag parentid { get; set; } 

to this:

[xmlignore] public idtag parentidtag { get; set; }  [xmlattribute] public string parentid  {      { return parentidtag.id; }      set { parentidtag.id = value; }  } 

note difference between , posted - when deserialize this, parentidtag proxy object should initialized.