Visual Basic Tutorial - 194 - Favorites Part 7 Startup Link And Refreshing 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 favorites viewer
program now full credit for this program
goes to the authors of beginning
Microsoft Visual Basic 2008 and they are
Thea and Willis and Brian Newsome now
they created this great program and I'm
using it to teach you guys some visual
basic concepts and how to program so
let's go ahead and run the program and
we can see what we've done so far so
when we open up my favorites it loads in
the favorites by using the favorite to
name and the URL and we can select one
of these and visit them so if i visit
the new boston it's going to open that
up in my default web browser so let's go
ahead and we'll run this again and you
can see that when it opens up at the
beginning we have this ugly link label
right here that says link level one and
then when we click on it the application
freezes and crashes so let's go ahead
and make it so that when the program
lows there will be a link in there that
the user can click on so before they
scan all the favorites in let's just go
ahead and set that link so we can use
what we did down here because we wanted
to look similar to the rest of the
design of the program and we want to
keep it consistent so we'll type link
URL dot text equals visit and then we'll
add the link that we want so we've got
this favorite salsa like them items
right here so we'll just put our own
link in there so we'll do HTTP colon
slash slash and let's just do let's say
you have a developer website or
something and you want to put that in
there to come to advertise for it or to
let them know who created it so we can
do ww youtube.com slash on live gamer or
i could put the website for the rocks
publishing company because i created the
book that has
program in it that'd probably be better
but for now we'll just leave it at this
so once we set it set the text we want
to clear the links in there because if
they try to click on something it says
visit and then has a link it's going to
try to open that link with the visit in
front of it and it's just going to mess
up so we'll type link URL dot links dot
clear and now I need to do is we'll use
the same thing we do down here so we'll
add a link and we'll start index 6 and
then we'll just add our link so we'll go
to link URL dot links add and let's find
the version of this that we want so we
want to start the length and the link
data so the start is going to be
starting at index 6 because we have 0 1
2 3 4 5 and then after this is when it's
going to start and we'll do length let's
say let's see we got 1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20 21 22
23 24 25 26 27 28 29 30 31 32 so
hopefully 32 will be correct and the
link data is going to be HTTP colon
slash slash ww youtube com / on live
gamer now this will probably be better
to put this link into a variable and
then use the variable length but this
should work just fine so hopefully when
we run it everything will work the way
we want to do and it says visit and then
it has our link so we can go ahead and
click on that and it's going to open up
the website so let's just fix that we
need to go ahead and go to more places
now you can see it's giving us the link
here so let's just go ahead and replace
this with on live gamer so we've got 12
three four five six seven eight nine ten
so we wanted to be start at six and go
to let's see the lengthy out the link is
going to be 10 and that's going to be
our link so when we visit on live gamer
it's going to open up the website now
you can see here that we're missing the
are so let's go ahead close out of this
and we'll make this 11 okay so now what
we can do is let's go ahead and add a
button that refreshes the favorites so
let's say you added a new favorite and
you don't have to you don't want to have
to close out of the program and then
reopen it to add that favorite in there
so we can set the text of this to
refresh and we can set the name to
button refresh now this right here is
not in the book i'm adding this myself
so come back to or let's create an event
for this first so whenever they click
refresh what do we want to do well we
want to use all of this code right here
so what we can do is we can cut this
code and let's put it into a sub so we
can come down here and type private sub
load favorites and it's going to load
the favorites into the ListView so
before that it loads the favorites in to
that list view what we need to do is
type list favorites dot items dot clear
so it will clear it each time it reloads
to favorites so whenever it loads we
want to type load favorites and then
whenever they click refresh we also want
to load the favorites so let's go ahead
and run this and you can see that
everything is working fine it's got our
favorites and we can click on them and
now let's go to Internet Explorer
and we'll just add a new favorite so
we'll just use the home page which is
msn com and we'll click add to favorites
and we'll call it msn and then if we
click Add it's successfully added to our
favorites now if we minimize out of this
and click refresh you can see that msn
is added to our list of favorites and
that it will add visit msn for us and we
don't have to add any extra code because
the way we've made this we can add an
infinite number will not really an
infinite number but a large number of
links and favorites and it will still
work so we can also delete favorites so
we'll go ahead and come to our favorites
and let's just delete this so you can't
see this on screen right now but there's
an option called delete I deleted that
favorite and then when I click refresh
you can see that msn is gone so go ahead
put that code in if you haven't already
and then once you've done that if you
don't have any questions move on to the
next tutorial