.NET (Core and Framework)

Re: Remote Access to the Registry with Impersonation

24-Mar-04 3:40

You should really not be allowing applications to install anything in the GAC as a user level account. In fact you should not be allowing user level accounts to install applications at all Smile | :)

But if you must .....

To impersonate a user you need to use P/Invoke to call the LogonUser API from advapi32.dll to get a user token. Then you need to create a new WindowsImpersonationContext from this user token and call the Impersonate() method. After you've done the dirty work you should call Undo() to revert back to user level. And now an example: Windows Impersonation MSDN Example[^]

Gunner_Sr24-Mar-04 4:11

Gunner_Sr

24-Mar-04 4:11

Okay. I had a look at the code and it makes sense. But where is the password passed, I saw the domain and username. Is that part of the LogonUser unmanaged method, using the interactive logon flag constant?

-Campbell

Re: Remote Access to the Registry with Impersonation

Roman Rodov24-Mar-04 12:55

24-Mar-04 12:55

YOu can use the interactive logon flag to make windows bring up the password entry box, but if you have your own means of obtaining the password you can pass the password into the password parameter of LogonUser function and not specify any flags.

unload an assembly

dzsigit24-Mar-04 2:11

dzsigit

24-Mar-04 2:11

Can one unload an assembly?

dzsigit

Re: unload an assembly

Roman Rodov24-Mar-04 3:25

applications for nt4, 98, me

24-Mar-04 3:25

No one cannot unload an assembly, but one can unload an AppDomain into which an assembly was loaded

Window Visibility

ShadowLordXP23-Mar-04 17:15

ShadowLordXP

23-Mar-04 17:15

Does any one know how to prevent a Windows Form from showing at startup. I've tried making the form hide inside my Load event, and tried to make it invisible inside my constructor and many things. I can make Main inside another class, but that makes a console appear instead.

I just want nothing to appear, except my notification icon. How would I go about this?

Thanks,
Shane S. Anderson.

Re: Window Visibility

John Kuhn23-Mar-04 19:40

John Kuhn

23-Mar-04 19:40

I thought there was a way of doing this -- at least a better one than I've come up with...

Here's what I did (which is trick the form into submission):

In the form properties browser, I set opacity to 0%, then in the declarations sections of the class:

private bool loadedActivated = false;

and in the body of the Load and Activated methods:

private void Form1_Load(object sender, System.EventArgs e)
{
  this.Visible = false;
}
private void Form1_Activated(object sender, System.EventArgs e)
{
  if (!loadedActivated)
  {
    this.Visible = false;
    loadedActivated = true;
  } 
}

and lastly in the the NotifyIcon Click (or double-click, if you prefer):

private void notifyIcon1_Click(object sender, System.EventArgs e)
{
  this.Opacity = 1.00;
  this.Visible = true;
}

... so I'm looking forward to someone who has a better, more elegant solution.

What a piece of work is man, how noble in reason, how infinite in faculties, in form and moving how express and admirable . . . and yet to me, what is this quintessence of dust? -- Hamlet, Act II, Scene ii.

Re: Window Visibility

T Manjaly24-Mar-04 12:07

T Manjaly

24-Mar-04 12:07

Thanks for this solution... until I get the best solution, this would work for me! I was looking for the same..

Sleepy | :zzz:

---------------------------------------------------------------------- Cry | :((

T Manjaly

C# Tutorials and samples : http://www.dotnetspider.com

Re: Window Visibility

John Kuhn24-Mar-04 15:23

John Kuhn

24-Mar-04 15:23

You're welcome... glad to be of assistance.

What a piece of work is man, how noble in reason, how infinite in faculties, in form and moving how express and admirable . . . and yet to me, what is this quintessence of dust? -- Hamlet, Act II, Scene ii.

hazzem elrefai22-Mar-04 22:52

hazzem elrefai

22-Mar-04 22:52

can i develop applications with c# that run on windows 98,me,nt4 ???????
i didn't find framework that works on these operating systems.
this is so imp. for me
thnx in advance

Rob Graham23-Mar-04 9:16

Rob Graham

23-Mar-04 9:16

.Net is not supported on NT4, ME ore win98, so the answer is no.

Power corrupts and PowerPoint corrupts absolutely. - Vint Cerf

Roman Rodov23-Mar-04 12:28

23-Mar-04 12:28

That's simply not true!
Microsoft .NET Framework can be installed on the following OS (hence applications will run on these operating systems):

Microsoft Windows® 98
Microsoft Windows NT® 4.0 (SP 6a required)
Microsoft Windows Millennium Edition (Windows Me)
Microsoft Windows 2000 (SP2 Recommended)
Microsoft Windows XP Professional
Microsoft Windows XP Home Edition

HOWEVER! ASP.NET is NOT supported on anything below Windows 2000 ..... and the Visual Studio .NET 2003 will NOT install on anything below Windows 2000. But ALL compiled applications will run happily on anything above and including Windows 98

IGx8923-Mar-04 15:37

IGx89

23-Mar-04 15:37

I can vouch for that; I've run a .NET program fine on a Win98SE computer.

Database change notification? Help needed...

John Kuhn23-Mar-04 16:11

John Kuhn

23-Mar-04 16:11

Check out the other answers in this thread -- but also read MSDN on the limitations of .NET on particular platforms.

What a piece of work is man, how noble in reason, how infinite in faculties, in form and moving how express and admirable . . . and yet to me, what is this quintessence of dust? -- Hamlet, Act II, Scene ii.

petand7822-Mar-04 12:21

petand78

22-Mar-04 12:21

I'm programming VB.NET and my application has an open ODBC connection to a remote database (MySQL) server. I'm using the .NET framework with data adapters, data sets etc.

Now, my application needs to some how be notified when the database has been changed (for example by another client running on another computer). Some kind of notification from the server to the client upon database change. There must be some way to do that, right?

I hope there is someone who can help me with this. Thanks!

Anders Petersson

Re: Database change notification? Help needed...

Colin Angus Mackay23-Mar-04 12:44

Colin Angus Mackay

23-Mar-04 12:44

I've never used MySQL so I don't know if it will work. Does MySQL support the concept of Triggers? If so, it may be possible to write one that will notify the client somehow.

"You can have everything in life you want if you will just help enough other people get what they want." --Zig Ziglar

"On two occasions, I have been asked [by members of Parliament], 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able to rightly apprehend the kind of confusion of ideas that could provoke such a question."
--Charles Babbage (1791-1871)

Where is ms-avalon library???

maharsoft21-Mar-04 21:45

maharsoft

21-Mar-04 21:45

Hi All,
Where Can i Download link for ms-avalon library??
I can't find any links from microsoft.com
There is informations only links...

please help me...if you have

i wanna to test XAML programs on longhorn build 4051

Confused | :confused:

Re: Where is ms-avalon library???

ian mariano23-Mar-04 11:33

Re: Where is ms-avalon library???

23-Mar-04 11:33

You have to have the current Windows Longhorn Client Preview and Windows Longhorn Client Preview SDK, both available with your MSDN Subscription (CD/DVD/download) or from the PDC materials. That's the only way to get the libraries.

For those of you keeping score, see CODE NAME AVALON: Create Real Apps Using New Code and Markup Model and Introducing the New Avalon Graphics Model.

Ian Mariano - http://www.ian-space.com/

"We are all wave equations in the information matrix of the universe" - me

ian mariano24-Mar-04 1:58

24-Mar-04 1:58

At this time, Avalon is part of the Longhorn SDK which is only available if you were at the Microsoft PDC or through an MSDN Library subscription. Don't fret, it'll be released soon. If you do find a place to download it which is NOT from Microsoft, I have to warn that they consider that illegal at this time.

If you have Longhorn already, you'll have the Avalon components, but not necessarily the SDK. Here's how to build an Avalon app: http://longhorn.msdn.microsoft.com/?//longhorn.msdn.microsoft.com/lhsdk/appcore/overviews/appmodel_life_cycle.aspx[^]

Take a look at the Developer FAQ at http://msdn.microsoft.com/Longhorn/Support/lhdevfaq/default.aspx[^]

The SDK library is at http://longhorn.msdn.microsoft.com/[^]

Ian Mariano - http://www.ian-space.com/

"We are all wave equations in the information matrix of the universe" - me

Pocket PC regisrtry

Member 96364221-Mar-04 20:57

Member 963642

21-Mar-04 20:57

Do you know how to read/write from/to registry oc a Pocket PC?
Do we need any other library to do this?

Best regards

Re: Pocket PC regisrtry

ian mariano23-Mar-04 11:43

23-Mar-04 11:43

You have to use Interop to do it (See Unmanaged Code Interoperability Support, especially the section on Platform Invoke Support.)

Refer to the CE3.0 RegOpenKeyEx or the CE.NET RegOpenKeyEx documentation to start.

Ian Mariano - http://www.ian-space.com/

"We are all wave equations in the information matrix of the universe" - me

VS .Net

ppp00118-Mar-04 23:05

ppp001

18-Mar-04 23:05

Hi,

if i just buy a VC++.Net but not the whole Visual Studio.Net
package, can I still use it to develop software for Pocket PC 2003/Smartphone by using the compact framework extension ?

and can I develop software on PocketPC/Smartphone by using
C# ?

Thanks

Re: VS .Net

ian mariano23-Mar-04 12:05