R – code actions directly using vbscript when QTP does the same thing too

Apologies, but I don't have time to convert your full sample over to C#. I've thrown together a simple demo that should get you going. This just uses C# to open a QTP instance:

using System;
using QTObjectModelLib;

namespace QtpDemo
{
    class QtpDriver
    {
        [STAThread]
        static void Main(string[] args)
        {
            Application app = new Application();
            app.Launch();
            app.Visible = true;
        }
    }
}

You'll need to compile it linking to C:\Program Files\Mercury Interactive\QuickTest Professional\bin\QTObjectModelLib.dll (which is the .NET interop library for QTObjectModel.dll) and have that and QTObjectModel.dll in your app directory when you run it.

It shouldn't be that hard from here for you to convert any object declarations and function calls from VBScript to C#. Please ask if anything's unclear.

To your other point about samples on the internet - there are plenty of people out there doing more advanced stuff with QTP and QC, but I think any really clever solutions aren't shared. I, for example, would probably be prohibited from sharing such things by my employment contract, but I agree with you - there is a dearth of good QTP API samples out there, at least on Google. Having said that, I heartily recommend the SQA Forums for your QTP and QC needs.

Rich

I use following code for pass credentials to the Windows Authentication dialog. I hope it helps.

Dim objIE, objWshShell
Set objIE = WScript.CreateObject("InternetExplorer.Application")
objIE.Visible = True
objIE.Navigate "http://url"
Set objWshShell = WScript.CreateObject("WScript.Shell")
With objWshShell
    WScript.Sleep 100
    .SendKeys "myusername" 'Focused by Default - Username
    WScript.Sleep 100
    .SendKeys "{TAB}" 'Skip To Password Field
    WScript.Sleep(100)
    .SendKeys "mypassword" 'Password     
    WScript.Sleep 100
    .SendKeys "{TAB}" 'Skip To "Remember Me" Checkbox
    WScript.Sleep 100
    .SendKeys "{TAB}" 'Skip To Submit Button
    WScript.Sleep 100
    .SendKeys "{ENTER}" 'GO
End With
Set objWshShell = Nothing
Set objIE = Nothing