please help me with ASP.net problems

Dear Sirs,

I'm a Vietnamese student. I've been developing a website for my school; as not a professional web programer, I have some problems using the language ASP.net. I'd be grapeful if you'd help me to solve some of the following troubles:

- I use a tool on left-hand toolbar called "file field" to upload a picture to a folder on the web server but I don't know what commands to be used to delete it from this folder?

- I call a confirmation box (in VB language) but I receive an error message: "It is invalid to show a modal dialog or form when the application is not running in UserInteractive mode"?

- What commands to hide or disable the back & next buttons in web browser?

Thank you for your help !

Luong trung Kien

Wellcome on asp.net forums.....
Here are your answers
1 - u use Input/output libarary , here is the reference ... http://aspnet.4guysfromrolla.com/articles/051802-1.aspx
2 - In Windows base application use, MsgBox(Prompt, Buttons,Title)
and in Web based application used Javascript message box
also see this link for reference , http://www.programmersheaven.com/mb/VBNET/161205/161205/readmessage.aspx
3 - simply used this command in code behind, BUTTON_NAME.visible = False (for hide) & BUTTON_NAME.enabled = False (For Disabled), and also u can perform this activity through designer.........

Happy Programming !
Sajjad

Hi,

The answers to your first and second questions are given above.

But for 3) - There is no way of disabling the back/forward button in a web browser, and nor should you try! The back/forward buttons are so important to web browsing that no web application should function without them. Most users on the web rely on the back/forward buttons for navigation - you should think of them as an asset rather than a problem.

Rich