inform user that only Internet Explorer can be used to access system

Hi nwhan,

1. You could look it up in the registry at the HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer.
2. If the key exists, IE is installed on the computer. To see if it is the default handler you can check the HKEY_CLASSES_ROOT\htmlfile to see the name, that will probably be "HTML document" and check out "HKEY_CLASSES_ROOT\htmlfile\shell\open\command".
3. If the key contains "iexplore.exe" you know that IE is also the default browser.

if 1 or 3 is negative then you can show a message

hope this helps a bit
bruintje

for code to check on ie installed

add these 2 in the top of your form
---------
Imports Microsoft.Win32.Registry
Imports Microsoft.Win32
---------

and this is the button code i used

---------
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
  Dim regKey As RegistryKey
  Try
    regKey = Registry.LocalMachine.OpenSubKey("Software\Microsoft\Internet Explorer", True)
    regKey.Close()
  Catch ex As Exception
    MessageBox.Show("Internet Explorer was not found on this machine")
  Finally

  End Try

End Sub
---------

hope this helps a bit
bruintje

Sorry if my question is abit blur or incomplete.
I have a web-based system that supports only Internet Explorer.
Therefore, if a user accesses the system using other browser like Firefox or Opera, the page should display a message telling user that "Other browser has been detected other than IE. Please use only IE to access the system."

Please help. Thanks.

this is ASP.NET?

Really ?
Anyway I am using Microsoft Visual Studio (VB.NET)
So is this VB.NET or ASP.NET ? Whats the difference ?

no i was asking :)

the code i gave checked if IE was installed or not in VB

but then you said:
>>the page should display a message telling user that "Other browser has been detected other than IE. Please use only IE to access the system."

so i assumed the page was a webpage and you used ASP for the webpage and i used a windows form to prepare the code

Sorry for not mentioning that it's a web-based system. So how can i perform the checkings and notify user to use only IE ? Help please. Thanks.