How To Save/Recall Folderbrowserdialog SelectedPath - vb.net

Question

I'm currently teaching myself (with the help of SO & Google) VB.Net to create a launcher for a multiplayer mod and I need users upon first launch of my application to input where their folder is stored, so far I have;
Dim folderDlg As System.Windows.Forms.FolderBrowserDialog
folderDlg = New System.Windows.Forms.FolderBrowserDialog
folderDlg.Description = "Please select your multiplayer folder"
If My.Settings.isFirstRun Then
My.Settings.isFirstRun = False
My.Settings.Save()
folderDlg.ShowDialog()
Else
End If
The button to run the mod itself
Private Sub Launch_mp_Click(sender As Object, e As EventArgs) Handles Launch_mp.Click
If My.Computer.FileSystem.FileExists("launcher.exe") Then
Process.Start("launcher.exe")
Timer2.Interval = 1000
Timer2.Start()
End If
End Sub
Private Sub Timer2_Tick(sender As Object, e As EventArgs) Handles Timer2.Tick
p = Process.GetProcessesByName("eurotrucks2")
If p.Count > 0 Then
Timer2.Stop()
Me.WindowState = FormWindowState.Minimized
Me.Visible = True
Else
End If
End Sub
I'm confused as to how I can store the users selected path and then recall it later on for the button without always asking for the dir.

Answer 1

You are almost there:
You have various options where to store the information: registry, old-style using ini-files or in the config file of your application. I would suggest using the config file since you already store the isFirstRun-varialbe in the config. In project explrorer look at the "My Project" folder and double click an item called "Settings". Add a setting of type string called "ModFolder". After that you will be able to access the value of that setting using My.Settings.ModFolder varialbe (see here).
Use the FolderBrowserDialog to store the folder (see here)
if folderDlg.ShowDialog() = DialogResult.Ok then
My.Settings.ModFoler = folderDlg.SelectedPath
My.Settings.Save
end if
When your application starts next time the ModFolder-variable will automaticall hold the value stored so instead of If My.Settings.isFirstRun Then I would check:
If File.Exists(Path.Combine(My.Settings.ModFolder, "AppToStart.Exe")) then
...
end if
If the file exists launch it, if not re-show the dialog to pick the folder.