KSuthar wrote: Can you tell me other ways to prevent it? No, I can't think of a way to be sure. And I don't think it's a reasonable goal. If the user wants to modify the file outside the application, why not allow it? It seems to me that the application needs to: 0) Check that the file exists 1) Load it into an XmlDocument 2) Check the schema 3) Read the value and confirm that's it either True or False 4) If anything in that process fails, then use the default, otherwise you got a valid value, why do you care how it got there? You might also consider a binary file rather than an XML (text) file, to make modification more difficult.

That's so much right thanks so much Luc. Observations: You always reply my questions, thanks again for that. :-D

KSuthar wrote: what shall I do in such case. If the user has the administration authority, I do not think we can stop him/her to delete the file. Maybe you can design you app logic again for validating password. KSuthar wrote: as of now my program recreates the xml with default password. Is it safe enough for you? If yes, go ahead.:) :) I Love KongFu~

Hi, you could add an "enter password" dialog to the HTML code, have most of the page content encrypted and include some JavaScript that checks the password and decrypts the text. Don't ask me for details though, I'm not inclined to do such things myself. I'd rather create my own file type and non-HTML browser. :) Luc Pattyn [Forum Guidelines] [My Articles] I use ListBoxes for line-oriented text output (not TextBoxes), and PictureBoxes for pictures (not drawings). modified on Friday, June 10, 2011 12:19 PM

Add login to the application and check the credentials when displaying the dialog. It isn't that difficult and there are plenty of examples here and elsewhere. What have you tried so far? only two letters away from being an asset

Hi, if that is old VB stuff, it is still native code and C# needs P/Invoke. if that is managed VB.NET code, then it can be called directly, just instantiate the classes and operate on the properties and methods as if it too were C# code. :) Luc Pattyn [Forum Guidelines] [My Articles] Love, happiness and fewer bugs for 2009!

I think you should create methods for using serial port on MDI form and call them from the child form. You can find the MDI form from child form using child's MdiParent property. The need to optimize rises from a bad design.My articles[^]

No, it's not supported by the standard MDI library in .NET. I don't know of a library that does this. A guide to posting questions on CodeProject[^] Dave Kreskowiak Microsoft MVP Visual Developer - Visual Basic      2006, 2007, 2008

Acrobat Reader itself is free to use. In the search results there was an interesting looking article on top: http://www.codeproject.com/KB/cpp/ReaderWrapper.aspx[^]. Perhaps it would help you forward. Also I believe that there are several other good hits on the results so have a look at them. Adding one keyword more (freeware) to the search gives you about 50,000 hits... Google is your friend. The need to optimize rises from a bad design.My articles[^]

Use your main form as a form conteiner ok? or create 5 usercontrols and use them as pages you know? here you will have to use delegates because you can´t acess the usercontrols, just main form can acess them because is his parent. So, if you like use main form like a form conteiner and load the other 4 forms inside him ok? :doh: nelsonpaixao@yahoo.com.br trying to help & get help

Karmenda, I do not know Window Form Applications well enough to give you a meaningfully answer about how hard or easy it is to use. My feeling is that learning C# and .Net at the same time is going to be a lot of work. At least, it would be a lot of work for me. However, it is the latest technology and therefore it could be the right solution for you. By the way, using .NET and C++ is kind of a kludge and I would not recommend it. I am wondering, what is your estimate of the time for you to do this project. I think the more time you have the better off you are by learning the C# and the Windows Form Application. Bob

You may use profitably Visual C++ 2008 Express Edition to build such GUI applications. However you should use Win32 API for the purpose, since the MFC framework is not included in the Express Edition of Visual Studio. If you select a new Win32 Project, Visual Studio kindly generates the code of a basic, working, GUI application for you. :) If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile. This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke [My articles]

Yes: see http://www.microsoft.com/express/support/faq/[^], question 7. :) If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile. This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke [My articles]

KSuthar wrote: can I use this application for commercial purpose also Yes: see, for instace, http://www.microsoft.com/express/support/faq/[^]. :) If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile. This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke [My articles]

Hi Karmendra, Better once run aspnet_regiis -i in run window...then check out.. regards srinu