Visual Basic Tutorial - 182 - FTP Downloader Part 5 Opening Folders Video Lecture | Mastering Visual Basic - Web Development

hello YouTube sam here from youtube.com
slash on live gamer for the new Boston
and in this tutorial we're going to
continue working on our FTP downloader
now as you saw right there I'm actually
installing the UDK right now because
I've been watching
Bucky's videos and I decided I wanted to
learn how to do that so if you guys
haven't seen those videos yet and you're
interested in developing games then you
may want to go check out his tutorials
on the UDK so let's go ahead and we'll
come back in here and let's see what's
next on our list of things to do so
we've got update server we'll get to
that later we've done home directory and
we've done download so now let's do open
folder so in order for us to open a
folder we're gonna go ahead we're gonna
go ahead and open up the selected index
change for the list FTP files so let's
use a simple if statement so if list FTP
files dot selected item
dot contains or we cannot use contains
here so what we're going to need to do
is create a variable to store that item
in so we'll just come right in but it
and we will declare a variable so then
folder name as string and we'll set it
equal to list a TV files dot selected
item ok so let's go ahead and get rid of
this right here
so if folder name dot contains so if it
contains a value so it contains a period
in it then what do you want to do well
we don't want it to do anything if
there's a period and let me just go in
and get this out of the way so what we
can do is we can do if they start here
and then just add an else right after
that that's not very efficient so we'll
do if not
click allow access to get him so if
folder name does not contain a period
then we'll go ahead and change the
directory so in order for us to do this
we're gonna have to create a bullying so
we'll come up here and we'll do private
is folder as bullying now let's set it
equal to false so if it doesn't contain
a period which pretty much means it's a
folder because I'll follow all file
types have a period so dot X dot bat dot
exe whatever you want those are all
gonna have a period in it and folders
will not so if it doesn't contain a
period then is folder it's gonna be
equal to true and now let's do else so
if it does have a period then is folder
is gonna be equal to false so
it is folder is equal to true then we
want to go ahead and enable that button
so button open folder or let's see what
it is button change directory which I
don't know why I named it that but
button change directory dot enabled
equals true and then we'll do button
change directory dot enabled equals
false so if it's a folder then they can
change the directory but if it's not
then they can not change them to
directory so now what we need to do is
access the click event for open folder
so we don't have to put any if
statements in here because we've already
enabled and disabled it based on if the
fog if it's a file or a folder so if
it's a folder then it'll allow us it
will allow us to click it so what would
it go ahead and do is we will set FTP
downloader dot current directory and
we'll just go ahead and plus equals and
we'll add
list FTP files that selected item and
then we'll just add a forward slash so
what this is gonna do is it's going to
have the forward slash that is already
there which is right here then it's
gonna be in the folder of the selected
item then it's gonna add another slash
right there so by adding this forward
slash right here we only have to do this
once so it adds that and it adds another
forward slash so that we can keep going
into more and more folders so it's going
to add this string to the directory so
now I need to do is we need to refresh
the list so refresh list now let's go
ahead and run this
and I believe I have a folder in here so
you can see we've got application files
which is a folder hi which is a folder
and then all these that have periods in
them are files so you can see when I
click on these we can't do anything with
them but when I click on hi we can open
that folder so for the current directory
we have an updated that yet so we've got
hi there dot txt so we can go back to
the home directory and we can open
application files open that folder and
then we can view files that are in there
so let's go ahead and we can open this
folder again - so we got hello world
application Exe dot deployed and
manifest so you can see we can go into
as many folders as we weren't so now
what we want to do is we want to change
this based on the directory so let's go
ahead and create a sub and we'll do
private sub update directory and we'll
just do update directory label so now I
need to do is label directory dot text
now let's go ahead and add + equals I
believe we'll need to space
and then we will do FTP downloader dot
current directory so it's going to get
the current directory that's in there
so whenever the form loes what we want
to do is we'll just actually we haven't
opened Indian directories yet so when
they go to home directory we will do
update let's see what did I call that
directory label so update directory
label and whenever they change the
directory we want to call that again
so update directory label so we'll go
ahead and run this you can see let me
click home directory we get current
directory and a forward slash now let's
go ahead and we can open application
files and we get application files here
now you can see that we have a little
problem here it has application files
and then it adds it there so let's go
ahead and fix that so we don't want we
don't want it to be plus because when we
want to set it equal to and then we'll
just say
current directory okay so now if we run
this we go to our home directory and we
get current directory in the forward
slash we can open this folder and you
see it gives us our directory we can go
back to the home directory and keep
opening folders and you can see that
it'll add it right here now let's go
ahead and close out of this so go ahead
and put in this code to change the
directory and update the directory label
and then once you've done that and you
understand what's going on move on to
the next tutorial