Passing XML DOM as IDISPATCH object to COM DLL

[Gaurav]

Hi Group,

I have seen your query for processing XMLDOm from c# to COM dll.
i also need to paas xml node to COM dll.

object refdomCallConte xt = null;

XmlDocument docXML = new XmlDocument();
docXML.LoadXml( "<?xml
version=\"1.0\" ?><CallContext> <Application>Es sbase</Application><Us er>user</User><ID>367629 121</ID><ClientAddre ss>127.0.0.1</ClientAddress>< Operation>Logon </Operation><Task Description>Log on
to
Enterprise</TaskDescription ><Language>EN U</Language></CallContext>");

refdomCallConte xt = docXML;

EntAppClass entapp = null;
entapp = new EntAppClass();
IEntApp ientapp = (IEntApp)entapp ;

objStatusCode1 = entapp.DoLogon( ref refdomCallConte xt, "", out
vtRetLogonXML, out vtRetPOVXML, out vtStatusDesc1);
when i am accepting this in com Dll the first parameter is coming as
VT_UNKNOWN. but it should be VT_DISPATCH.

can you give me some suggestion for this problem.

Gaurav