C#中利用MarkupService實現HTML解析為DOMTree

[comvisible(true),comimport(),guid("7fd52380-4e07-101b-ae2d-08002b2ec713"）,interfacetypeattribute(cominterfacetype.interfaceisiunknown)]

publicinterfaceipersiststreaminit

{

voidgetclassid([in,out]refguidpclassid);

[return:marshalas(unmanagedtype.i4)][preservesig]

intisdirty();

voidload([in,marshalas(unmanagedtype.interface)]ucomistreampstm);

voidsave([in,marshalas(unmanagedtype.interface)]ucomistreampstm,

[in,marshalas(unmanagedtype.i4)]intfcleardirty);

voidgetsizemax([out,marshalas(unmanagedtype.lparray)]longpcbsize);

voidinitnew();

}

unsafeihtmldocument2parse(strings)

{

ihtmldocument2pdocument=newhtmldocumentclass();

if(pdocument!=null)

{

ipersiststreaminitppersist=pdocumentasipersiststreaminit;

ppersist.initnew();

ppersist=null;

imarkupservicesms=pdocumentasimarkupservices;

if(ms!=null)

{

imarkupcontainerpmc=null;

imarkuppointerpstart,pend;

ms.createmarkuppointer(outpstart);

ms.createmarkuppointer(outpend);

stringbuildersb=newstringbuilder(s);

intptrpsource=marshal.stringtohglobaluni(s);

ms.parsestring(ref*(ushort*)psource.topointer(),0,outpmc,pstart,pend);

if(pmc!=null)

{

marshal.release(psource);

returnpmcasihtmldocument2;

}

marshal.release(psource);

}

}

returnnull;

}