.NET (Core and Framework)

Object missing = System.Reflection.Missing.Value;
axWebBrowser1.Navigate( "http://www.codeproject.com", ref missing,
 ref missing, ref missing, ref missing);

axWebBrowser1.ExecWB( SHDocVw.OLECMDID.OLECMDID_PRINT, 
SHDocVw.OLECMDEXECOPT.OLECMDEXECOPT_DODEFAULT, ref missing, ref missing );

axWebBrowser1.ExecWB( SHDocVw.OLECMDID.OLECMDID_PAGESETUP, 
SHDocVw.OLECMDEXECOPT.OLECMDEXECOPT_DODEFAULT, ref missing, ref missing );

axWebBrowser1.ExecWB( SHDocVw.OLECMDID.OLECMDID_PRINTPREVIEW, 
SHDocVw.OLECMDEXECOPT.OLECMDEXECOPT_DODEFAULT, ref missing, ref missing );

void PrintOperation(EventHandler operationToDo)
{
  // ... lots of code here ...
  this.printingBrowser.NavigateComplete2 += operationToDo;
}

axWebBrowser1.ExecWB(SHDocVw.OLECMDID.OLECMDID_PRINTPREVIEW, SHDocVw.OLECMDEXECOPT.OLECMDEXECOPT_DODEFAULT, ref missing, ref missing);

private enum OperationToDo
{
    Print = 1,
    Preview = 2,
    PageSetup = 3,
    None = 4,
}
private OperationToDo m_eOperationToDo;

private void PageSetup()
{
    m_eOperationToDo = OperationToDo.PageSetup;
    LoadPage();
    // Disable the interface or something else
}

private void NavigateComplete2 ( .../*Some params*/ )
{
    if ( m_eOperationToDo == OperationToDo.PageSetup )
           // Show it;
    else if ( ... )

    m_eOperationToDo = OperationToDo.None;
    // Enable the interface
}

private void DoPrintOperation(SHDocVw.OLECMDID operation)
{
   // Lots of irrelevant code for making tempFilename2 and filling it with .html data.

   // Set the print operation to be done upon navigation completion.
   this.printOperation = operation;
   
   // Navigate the printing web browser control to the document.
   // When the navigation is complete, this.printOperationEventHandler will do whatever this.printOperation says to do.
   object missing = Missing.Value;
   this.printingBrowser.Navigate(tempFilename2, ref missing,  ref missing, ref missing, ref missing);
}
   
private void printOperationEventHandler(object sender, AxSHDocVw.DWebBrowserEvents2_NavigateComplete2Event e)
{
   object missing = Missing.Value;
   this.printingBrowser.ExecWB(this.printOperation, SHDocVw.OLECMDEXECOPT.OLECMDEXECOPT_DODEFAULT, ref missing, ref missing);
}

this.DoPrintOperation(SHDocVw.OLECMDID.OLECMDID_PRINT);

this.DoPrintOperation(SHDocVw.OLECMDID.OLECMDID_PRINTPREVIEW);

this.DoPrintOperation(SHDocVw.OLECMDID.OLECMDID_PAGESETUP);

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"When the only tool you have is a hammer, a sore thumb you will have."