How to save a webpage using ExecWB() in c#

[C# Programming]

when IE is opened, internally I have to save the page on some specified path( as C:\abc.html)
this is code trying
object pvaIn = new object();
object pvaOut = new object();
pvaIn = webBrowser.Document;

pvaOut = @"C:\abc.html";
webBrowser.ExecWB(OLECMDID.OLECMDID_SAVE, OLECMDEXECOPT.OLECMDEXECOPT_DODEFAULT, ref pvaIn, ref pvaOut);