[RESOLVED] [2008] Preventing form from loading unless specific file exists

[cmmorris1]

How can I prevent my form from running unless a specific file is on
the users pc? I need to make sure it's my software and not any exe
with the same name? Perhaps a md5 hash check or something? So far
this is all I have but want to have a better check or prevent the software
from running.

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        If My.Computer.FileSystem.FileExists("C:\Program Files\XYZ\xyz.exe") Then
            Me.Show()
        Else
            MsgBox("You Need To Install XYZ To Continue")
            Application.Exit()
        End If
    End Sub

[jmcilhinney]

Handle the Startup event of your application. NOTE: the application, NOT the form. You can then set e.Cancel to True to prevent the application running.

[cmmorris1]

Thanks buddy, I was also looking for code that would do a file size check perhaps or what would be the best way for the program to check the file existence? an md5 hash check? I want the main form load event to check for the software and make sure it's not a phony .exe in the location posing as
the real one? How can I be sure?

[cmmorris1]

Nevermind. Thanks jmcilhinney for your help, I think this is going to be ok. I think the other type of check is going overboard at this point.

Chris