VS 2010 Random From One Listbox To Another
Jun 12, 2011
I have two listboxes and one text box. lbxData is already populated with strings (ex; car, boat, motorcycle) I have a text box (tbxRandom) for user input to choose the number of random strings they want generated and placed in the other listbox (lbxRandom) when clicking btnRandom. Here is what I have but keep getting an error. mylist.addrange(str) "value cannot be null. parameter name: collection
Dim Str As String
'Declare a List
Dim myList As New List(Of String)
[Code].....
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Apr 20, 2012
I am wondering how i would go about taking multiple items (randomly) from a listbox and displaying them in a label!Now this listbox wouldn't have to be visible, maybe i can do it without it even being a listbox?I want to have 25 labels and each one recalls a random value from the list (doesnt matter about being unique and the list will contain about 20-30 items)Im just a bit stumped on how to do it as ive done some looking into it but most people are asking for randomized numbers or unique items where as i need randomized items from a list which aren't unique!
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Apr 22, 2011
[Code]...
The Textbox.Text will be a new Item in ListBox when Button1.Click I want button2.click to pick a random item from the listbox and display it as the label. Think of it as a random raffle picker lol.
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Apr 4, 2010
The class Random is out right defective. It always produces the same random numbers in the same sequence. Things I have tried so far is every kind of seed you can think of as well as Randomize. The result is that I always get the same random numbers in exactly the same sequence.
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Nov 26, 2011
I am practicing using the drawing commands, and have gotten a grass background and black happy face that moves around the background.It's a 10x10 grid of 50 pixels.I want (at the moment, when i press enter) it to generate a random number of trees (15 ~ 25) at random locations on the background. The program doesn't freak out about anything, and the variables seem to be right (using stop commands) but it's not drawing anything. Here is the code for the "GenerateTrees" command I have for when I press enter.
Private Sub GenerateTrees()
NumberOfTrees = Int(Rnd() * 10) + 15
For i = 0 To NumberOfTrees - 1
bmap.MakeTransparent(Color.Fuchsia)
[code].....
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Apr 19, 2012
I've made an image viewer which opens a random image from a specified folder, but the random number is not that random at all... I've already used Randomize(), but without result.
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Jul 19, 2011
i need to add random numbers in list box like
0
2
1
3
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Sep 21, 2010
I don't want a random number, I want a random item in a listbox.
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Jan 10, 2009
I have some lines in a ListBox, i need that select 1 line random and send this line to Label1.Caption.
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Apr 27, 2010
I have a listbox with five items
I am trying to code a button that will randomly choose one of the items and then display in an output textbox
textbox code so far
txtOutput.Text = "The computer has chosen " &
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Apr 8, 2012
I have quick questions for you guys how do I pick a random string from a listbox ? and also second question how do I randomize which line to pick out of a string array? lets say I have 5 strings
[Code]...
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Jul 29, 2011
i am working on a program that has a randomize button that can already randomize the selection of a listbox. Now i wanted to make it also randomize the selection of a listview, but i can seem to find out how to do this. Ive tried using the same code, but it said that add isnt part of listview.
Heres the code:
Dim Random As New System.Random
Listbox1.BeginUpdate()
Dim ArrayList As New System.Collections.ArrayList(Listbox1.Items)
[Code]......
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Dec 6, 2009
I am writing a program for a class on visual basic and i have a listbox that displays 15 random numbers using an array. Then there are 2 buttons(max and min) that when clicked displays the largest number in the list and the smallest. how do i get these buttons to do this?
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Mar 12, 2010
so I am working on a program with items entered into a listbox. Then when the user clicks a button it will randomize the listbox items in just a random order obviously. I have tried adding it to an array and everything but I ended up just having to start over now because I couldn't find a solution. I can save the contents and everything I know how to do that it's just randomizing the items that I am struggling with. I have searched high and low and have yet to find a conclusion to my problem.
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Oct 30, 2009
Why is my application messing up? I'm trying to make non-repeating random numbers and then insert them into a listbox. Check my code out:
Dim RandomNumber As String
Dim x As Integer
Do[code]....
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Mar 4, 2010
I am not so good at VB.NET, well, I am working with a school to run a Spelling Bee aimed at children in year 7. And to make it fair and unbiased i need an application that can choose randomise a word from the list box then transfer the string to the text box. So basically something that can pick a random string from the listbox and show it in the textbox1.text property.
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Dec 14, 2011
how would you clear a listbox, like with a button.
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Mar 15, 2012
I have this code which lets you choose a class, then enter 3 names into the roster listbox...the problem im having is with the btn grades...im using a nested loop but cant figure out how to get all 3 names into 3 seperate inputbox prompts to input the grades...right now its only showing the first name entered...how do you get the code to loop and go through whatever amount of students entered in the roster listbox into the grade listbox.
[code...]
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May 18, 2009
i am new to dot net and i have a problem with this code below. what is expected is that the method should add the names in the string in random order into the listbox. but the output shows only single alphabets added rather than the whole name. i don't know where im wrong.can anyone correct me?
Private Sub Button6_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button6.Click
Dim fr(4) As String
[code]....
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Nov 6, 2011
I've been trying to work this out I'm creating space invaders and I want the invaders to only shoot back if they're visible, and if the invaders which was selected isn't visible, then another invader is to be selected.The problem I'm having is if no invaders in a row is visible, then it gets stuck in a loop of
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Nov 23, 2010
every time i press the Roll Dice button the turn1roll1, turn1roll2, or turn2roll1, turn2roll2(depending on turn variable) it shows system.random in ASCII Chart i used the label names so no confusion.[code]
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May 20, 2012
I want to execute a code between 30 seconds and 5 minutes. Anyone knows how to do this?
Timer_Tick(...)handles ....
dim rnd as new random
for i as integer = 3000 to 30000
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Oct 6, 2010
I have code to save records to my mysql database.But first I want to read what is the last number of record and add 1000 on that? What is the proper way to query that first. I want to make the result at unique ID of my clients. Here is my chunks of codes.
Private Sub addClient_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim conn As MySqlConnection
conn = New MySqlConnection
With conn
[code]....
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May 8, 2012
i need a simple way to get a random number from 2 numbers. This means that for example if my 2 numbers are 3 and 7, i don't need a random number between 3 and 7 that would be like 3,4,5,6,7 but only a random that is either 3 or 7. Meaning not all the numbers between x and y, but either x or y.
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Jun 18, 2011
I'm writing a personal ftp upload program just for myself.When i upload a file i want my program to randomize the file name.
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Oct 6, 2011
I'm trying to figure out how to make a number be randomly picked but only picked once when a button is clicked. I've got the simple random number code down already but I can't seem to figure out how to have it picked only once.This is basic random code that I'm using right now.
Randomize()
Dim value As Integer = CInt(Int((14 * Rnd()) + 1))
It picks out a number from 1 to 14 and returns it as an integer in "value", and I'm using to set that to open a specific form but I don't want that specific form to open more than once in a session. So if the number three was already picked out then it could never be returned ever again.
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Mar 2, 2011
We recently upgraded VS 2005 to VS2010 and converted an application seemingly without any problems. But when deployed to the customer they are getting intermittent errors at seemingly random places in the program which force the application to close and AccessViolationExceptions being logged to the Application Event Log.
The customer's site is a multi user environment with the application hosted on a server and users running the app via RDP. We get two errors in the event log:
Application: ContainerDepotSystem.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: System.AccessViolationException
Stack:
[Code]...
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Sep 3, 2010
The application reads information similar to a DXF file. For purposes of discussion, the data consists of lines, those lines have endpoints, x1,y1,x2,y2. Within the file those lines create "paths", in other words, they are connected. There can be many separate paths within a single file. However in the original file, the geometry is not in any particular order, the paths are not indicated.
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Nov 19, 2010
I am trying to create a few random numbers, but cant seem to get it to fire off.
Public Function GetRandom(ByVal Min As Integer, ByVal Max As Integer) As Integer
Static Generator As System.Random = New System.Random()
Return Generator.Next(Min, Max)
End Function
When I call the GetRandom(0,500) and display it out on the page, I don't get anything?
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Jul 16, 2011
How do I go about generating a random vector coordinate that is within say 200 units of another vector coordinate?
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