|
Dear all,
Anyone can hide the tabpages in tabcotrol
Don't tell follows
Me.TabControl1.TabPages.Item(0).Visible = False
This is not working
And also can you draw line on tabpages
rugfy
Ishak
|
|
|
|
|
rugfy wrote:
Anyone can hide the tabpages in tabcotrol
You cannot hide the page, but you can use the TabPages collection of the Tab Control to remove the page altogether.
If you need to be able to add the TabPage back dending on some condition, you can save the TabPage in a Collection before you remove it. Because adding the page back in order is a hassle, the easiest thing to do is when you initialize the form, add all TabPages to the collection in the correct order. Then if you remove a TabPage and need to add it back later, just remove all TabPages and then replace them all in order from the collection.
Of course, you will lose any data that has been entered if you use this approach, so you may have to add additional code if you need to maintain the data state...
You can draw a line on a TabPage using the Graphics object. However, if you are going to be removing tabpages at run time, the events could get complicated. The easiest way to create a line is to create a Panel on the tab page, set it's BackColor to the color of the line you want, and set it's height to 1 pixel.
|
|
|
|
|
Thanx a Lot
But I don't need it ,My actual Think is i want to give the distance between two pages like seperator in toolbar for some elegant look.thats all.In this case my doubt is whats the use of
Tabcontrol.Tabpages(0).Vaiable = False
Does it doing nothing Thats Why
Any way Once Thanx For your reply
Ishak
|
|
|
|
|
Is there any way to the following?
I put a DVD in my dvd drive
some VB.net code detects that I put something in there
some more code detects that it's a dvd
Thanks
|
|
|
|
|
n/m. found something that will work
|
|
|
|
|
A very simple way is to use a Timer tick and check if the logical drive that points to that root directory/drive exists. This way you will know if something is present your drive
By DVD do you mean a DVD-Data disc (4.37GB) or DVD-Video disc?
|
|
|
|
|
dim cdDrive as Boolean
....
Private Sub Timer_Tick
cdDrive = System.IO.Directory.Exists(<cd dvd="" drive="" path="">)
End Sub
......
This is a very crude form but will tell if you there is media in your drive
|
|
|
|
|
Im having problems When trying to use VB as interface and use matlab
to run the code. My code is actually in Matlab form coz it related to
the neural network. And i've tried this link but i cant get the
solution also.
http://www.mathworks.com/access/helpdesk/help/techdoc/matlab_external/ch07cl25.html#133975
Does any one know how to use the VB to pass the value to Matlab and
execute a Matlab code
Below is the code that i wrote. But it just show me the rror that the
object does not support this method or property.
Set MatLab = CreateObject("matlab.application")
'string to pass to Matlab to run mFile from mfile directory
MatLabCommand = "run('" & initDirectory & startMfile & "')"
'execute matlab command
With MatLab
Visible = False
Result = .Execute(MatLabCommand)
End With
*Call MatLab.PutWorkSpaceData("MatlabCommand", "PlateNum", PlateNum)
startMfile = init.m
i've tried to remove the Call in * line but it shown me syntax error.
Hope that anyone can help.
Thank you
Best regards
|
|
|
|
|
Hi,
I have a lot of textbox in a lot of forms (vb.net winform)
if all my textbox have an event "Validating" how can i raise this event if the user don't enter in a textbox (focus) 
Thanks
Dan
|
|
|
|
|
Why would you want to ? If they never enter the textbox, you KNOW if it's valid or not, right ?
Christian
I have several lifelong friends that are New Yorkers but I have always gravitated toward the weirdo's. - Richard Stringer
|
|
|
|
|
nop!
If I put some code in the validating event ... i don't want to put again some code in the button_click event (check if some textbox is empty) you see???
Dan
|
|
|
|
|
In that case you need a requiredfieldvalidator. If you're in a winforms app, you may need to force validation on a button press, as the model is not as clear as ASP.NET
Christian
I have several lifelong friends that are New Yorkers but I have always gravitated toward the weirdo's. - Richard Stringer
|
|
|
|
|
ok Thanks Christian
I have 2 years experiences with asp.net but only 1 month with WinForms .... Why asp.net have a lot of validators and not in WinForms we need to code every thing :S
|
|
|
|
|
Because in WinForms we have state, we're *able* to program a lot more.
Christian
I have several lifelong friends that are New Yorkers but I have always gravitated toward the weirdo's. - Richard Stringer
|
|
|
|
|
You might want to take a look at an article on MSDN, called Validator Controls for Windows Forms[^].
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
|
|
|
|
|
Thank you Dave excellent article
Dan
|
|
|
|
|
HI, im currently doing a recognition system that constructed by using Matlab, but i use VB as interface. Does anyone know how to let the VB open other program and execute the file? i try as followed but it shoen type mismatch
Set Matlab = CreateObject("Matlab.Application")
when i try to debug it shown error on this line. Hope that anyone can help Thank you.
best regards
Snow
|
|
|
|
|
You haven't shown us enough code to diagnose the problem. It would appear that your definition of the variable Matlab is causing the problem.
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
|
|
|
|
|
I am in an advanced VB.net 2003 course. I have created a database to store DVD information in. The database is Access. I have a picture box that I would like to have the front covers of my dvd's put in. What exactly I am trying to do is:
If a dvd is already added to the database but the pic is not in there, I would like to be able to do a drag/drop from the pic directly into the form.
For new dvd's being added, I would like to know a way to get the new pic into the form.
And I would like to be able to make sure my access db is set properly to take those images and keep them in their database so when someone scrolls through their dvd's, the pic will change with the dvd.
Any help on this would be greatly appreciated! Thank you all.
Jason
I'd rather have a bottle in front of me than a frontal lobotomy.
|
|
|
|
|
I would personally opt for keeping the graphics out of the DB and stored locally in the file system oswhere. Only keep a path tot he pic in the DB. It just avoids problems latter whenteh DB gets large.
George Carlin wrote:
"Don't sweat the petty things, and don't pet the sweaty things."
Jörgen Sigvardsson wrote:
If the physicists find a universal theory describing the laws of universe, I'm sure the a**hole constant will be an integral part of that theory.
My Blog[^]
|
|
|
|
|
Could you provide me with some insight for this procedure on what I am wanting to do. I understand storing them locally but how does the form know where to pull them from (a default location) and how can the drag/drop work with the pic box (if possible)? Thanks for the quick reply.
jason
I'd rather have a bottle in front of me than a frontal lobotomy.
|
|
|
|
|
Your code knows what directory it is being run from so use that as a base to start from. Create a folder under that folder to store the images as individual files there. As you add a title into the system take the picture provided (how are you going to get them?) and save it there. Take the filename you save it to and add that to the database. Any time you want to reference the picture just take the filename from the DB, append it to your known path and load the picture into your picture box.
As far as the drag and drop goes, I am not sure why that enters into it unless you are using that as a way to get your pictures into the program. You might want to consider grabbing the pictures from IMDB. It might take a bit to learn how to do that but you won't have to worry about scanning them in yourself.
George Carlin wrote:
"Don't sweat the petty things, and don't pet the sweaty things."
Jörgen Sigvardsson wrote:
If the physicists find a universal theory describing the laws of universe, I'm sure the a**hole constant will be an integral part of that theory.
My Blog[^]
|
|
|
|
|
thanks for all the help. I still have a few more questions regarding all of this. I am very new to VB.net programming so I understand what you are saying but the follow through is where my problems lie.
I guess to start at the lowest level:
How does Access handle the pictures? Let's say I have pictures that I scanned in and they are sitting in a folder somewhere. How does access tie into them? Are they OLE objects or hyperlink (what is the datatype for that column?).
Next, am I just wanting to bind the pic using the picbox property or is this something that I will need to code?
I could send you my VB.net file to view if that will help. I can zip up the entire project and send it over to you. This is something I am definitely interested in learning and I hope you don't mind helping.
Thank you again.
jason
I'd rather have a bottle in front of me than a frontal lobotomy.
|
|
|
|
|
Well, I could give you a fish, or show you how to fish…. Hmmmm
Purpose is to demonstrate using xml as a file type database
http://www.codeproject.com/vb/net/OrderAutomation.asp[^]
Base64 Encoding a picture for storage
http://www.dotnet247.com/247reference/msgs/57/288330.aspx[^]
As far as storing the picture goes in the example I gave you, the DB only stores the NAME of the picture (as a string) then uses that name to load the picture from a file to view it.
I don't mind helping, but I hope you understand why the answers I give are the way they are.
Part of being a developer is:
Solving problems by deciding what way is best.
Decomposing problems into small understandable parts.
Finding solutions to problems.
I don’t mind pointing in the direction but you have to do a little of the work yourself. That's what makes programming so much fun.
George Carlin wrote:
"Don't sweat the petty things, and don't pet the sweaty things."
Jörgen Sigvardsson wrote:
If the physicists find a universal theory describing the laws of universe, I'm sure the a**hole constant will be an integral part of that theory.
My Blog[^]
|
|
|
|
|
I understand and completely agree with you. I do appreciate your help; I just wanted to make sure we were on the same page. I get a bit frustrated with myself on some of these things because I know what I want to do but I have trouble mapping it out and implementing my ides (when it comes to programming). I will read up on those articles and let you know if I have any questions. Thanks!!!
jason
I'd rather have a bottle in front of me than a frontal lobotomy.
|
|
|
|
General 
News 
Suggestion 
Question 
Bug 
Answer 
Joke 
Praise 
Rant 
Admin 
Submit an article or tip
