i have a program im working on that has 68 different buttons on 1 form. each button opens a seperate form. each from opened from the buttons starts with "helmet_" i need a way to only allow one form with that starting name to be open at a time. otherwise you could open all 68 forms at once and that would cause issues.
View 9 RepliesI want to set a time limit over openFileDialog window, if, for example, 10 seconds elapsed without any user input, it will be killed automatically, how to implement that.
View 11 Repliesi am making a program that has a lot of forms. one part in particular has about 30 buttons that each open a different form. i need a way to only allow one of these forms to be open at a time.only allow one form with the prefix "Helmet_" to be open at a time you would be a god.
Public Class Helmets
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Helmet_AmazonHelmet.Show()
End Sub
[code]....
I want to quickly limit the time that someone can use my program and do it without licensing software for now. Can I use an If'Then statement to check to see if today's date is later that a date that Ihard type similar to this conceptually. I am using VB2008.
If today's date > 1-1-10 then
Messagebox.Show ("Your trial period has expired.")
Else Form2.show()
I have developed a utility which I would like to make available for demo purposes. I would like to allow people use it for full 30 days and stop. Does Visual studio ships any tool to do this? if not can you please point me to a way or piece of code to do this.
View 3 RepliesHow can I limit the length of time an operation is allowed to take?
I have an external library that processes image files. I'm running it against thousands of images, and every now and then the library gets stuck on certain images. If I need to skip an image here or there, no problem, but I can't have the process get locked up, so I want to impose a maximum amount of time that the process is allowed to take for each image before I force it to give up and move on to the next image.
I have a process that recieves a request and issues a response. Sometimes createing the response is taking too long. I would like to start the request, and after 8 seconds, if the response has been created, I would abort the process and send back a generic message.
View 3 Replieshow do u actually limit a listbox to say 10 items
View 1 Repliesim using the timer control, how do i set the start time and finish time? for eg, show a label text for 4 secs then hide. Googled for examples but still no joy.
View 4 RepliesIs there a way to limit the topmost property? I have two forms and I only want to one form form topmost to only one form. I don't want it to be topmost to all of the windows in my computer.
View 4 Repliesbasic question which i cant figure out is i have a listbox and i total up all the values in it and send it to a text box. but in the listbox i cant have more than 10 items in it i at the moment have a message box telling me how many items i have in the listbox which is simply MsgBox(ListBox2.Items.Count()) when the 10th item is entered i need it to not allow me to enter anymore so i know it needs to go 0-9 but not sure how to implement it.
View 1 RepliesI am using tooltips to show information that overflows a label. The problem is that when the information is really long it spans the entire width of the screen and is difficult to read, Is there any way to limit the size of the tooltip?I was thinking one way may be to insert linefeeds at points beyond a certain width -- messy, but it would work.
View 4 RepliesI have this function
Private Sub createChildForm(ByVal winForm As Form)
'Take a form and set app as its parent form
winForm.MdiParent = Me
winForm.Show()
End Sub
When some one wants to view the "About" form, it's called like this:
createChildForm(New f_about)
But my function doesn't stop them from creating an unlimited number of about windows and I need to put that limit to one form.
For example, I will have a login screen, but I don't want them logging in over and over again in different accounts because my subroutine doesn't stop a form from being created/opened more than once.
I have a passport number textbox and I want to limit the user to 7 numbers and a Letter in the textbox. How Do I do that?
View 1 RepliesI have a textbox and I would like to limit this textbox to enter 10 digits only. Is there a way to do it?
View 3 RepliesHow do I code in vb.net that the text box can only accept 10 inputs from the user. User can only enter 10 strings.
View 2 RepliesI want to start the time in one user only because when i add a user in my listview and click the start button both of them start their time. how can only start one user only? and when i select the other user and start their time the first one that i start is continues deducting a time.
This is my code:
Public Class Form1
Private Sub Form1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
With Timer1
.Interval = 1000 '// set interval to 1,000, which is 1 second.
[CODE]...
I'm working on a website where we'll be getting a lot of videos to be uploaded. To keep things simple and secure, I'm just writing VB.net windows app to suck all the files in a directory in, allow you to set some options, and start the encode by spawning a new FFMpeg process.
[Code]...
How can I set a Column of a Data Type (time) to start from 8:00 A.M?. Since the default data type starts from midnight.Is there a way to create a constraint to set the time to start from 8:00 AM and check whether the inserted time is 8:00 A.M or not ?
View 2 RepliesI am using VB 2008 and want to record a start date and time and then the stop date and time in a rich text box, i can get the start time into the box but so far can only stop the time instead of 2 seperate times, what i have is a drop down box with a list of computers 1-10 i was trying to get it so you picked a certain computer and that went into the text box then you started the timer and that was recorded, finally you stopped the timer and that was recorded but as i am a total newbie it does not work
Here is the code i have.
Public Class Form1
Dim time2 As Date
[CODE]...................
I would like to set my application to show system under maintenance if it hit the start time until the end time which i set in the xml (24 hrs). How do i code it. [code]
View 3 RepliesI have written my first service that checks the status of servers. I have used the statement System.Threading.Thread.Sleep(86400000), so that the service will run, then sleep for 24hrs before running again.
My problem is i want the service to run at 7am every morning, when i install and start the service it will run from the time i start it. I dont have access to required computer at 7am.
Is there a way of setting the service to run at 7am on the first run? Was thinking a Loop, or timer but dont want to be eating resources up while it is not necessary.
I am part of a group writing a program for scheduling purposes. In the program I must check to see if times are overlapping.Say an Instructor is in class 1/1/2011 3:00:00pm to 1/1/2011 4:00:00pm receive the Instructor and 1/1/2011 3:10:00pm to 1/1/2011 4:50:00pmThis should return True the instructor is overlapped.Of course the other side would be if the time started/ended before or after the original class.I've tried many different combination's of if statements similar to:
If (begTime <= s.BegTime AndAlso endTime <= s.BegTime) Or (begTime >= s.EndTime AndAlso endTime >= s.EndTime) Then
End If
[code].....
When I click a start button I want to start and display the time elapsed if HH:mm:ss. Best way to tackle this?
View 1 Replieshow to start a VB.NET program at a specific time of the day, but I simply cannot find it. I've found an example that shuts down the computer at a specific time of the day, but having no experience with the Timer function, I wouldn't know where to start when hacking the code.As an example, I'd like the program to run at say 2:00PM and display a message. The displaying the message won't be hard (MessageBox.Show("Stuff")), it's just the starting .
View 8 RepliesI create an app, with it when I click a button it opens a new form on a second monitor.
This works perfectly, but every first time the app start and I open the second form, on my primary screen (right side) I see the border of the second form. When I click the button again, the form is hidden, and when I click it again, it appears again but then the border is gone.
[Code]....
I just made an auto talker but i wanted to know if its possible to make a random time before it start talking. Exemple: Instead of just talking every 2 seconds, make it random between 2 - 8 seconds so he can talk at 2 seconds then the second 7 seconds then 3, 5, 6, 7, 8 etc......
View 3 RepliesI had a post on it but i ran into the same problem. My program downloads a text file from server and checks it.
It works but it makes the program crash for 4-9 seconds.I was thinking of downloading the file more slowly or using Threading()
Knowing the hWnd and the Title of all the desktop windows, I whould like to order them by start time order (them order on the task bar)In your opinion is there an API that gives those data? I can't use the Process.StartTime property because many of these windows have the Process.MainWindowTitle = "" and Process.MainWindowHandle = 0
View 2 RepliesWhen I setup the event using DDay.ical I can successfully send the events to a user's outlook. The problem arises when multiple events are setup at the same time. When this happens all emails are updates to the original task, not new tasks.
I tried adding a name to the event using the .Name property, which results in the event email being an unsupported calendar invite.