I cant seem to see what is wrong with this arrary size. It works if i set the random number to 10
pretty sure it's to do with this line For i = 0 To intResult but i cant for the life of me figure it out.
Dim intResult As Integer
'// Initializes the random-number generator, otherwise each time you run your
'// program, the sequence of numbers will be the same
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I have made a function which opens a random image, but sometimes I get the 'Index out of bounds of array' error.
VB
Private Sub OpenRandomImage() Handles mnuOpenRandom.Click
If FolderBrowserDialog.ShowDialog <> vbOK Then Exit Sub
Dim Path As String = FolderBrowserDialog.SelectedPath
Dim BmpFiles, GifFiles, JpegFiles, JpgFiles, PngFiles As Array
BmpFiles = IO.Directory.GetFiles(Path & "", "*.bmp")
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I've read numerous posts and threads about random number generation, but I havent' run across this.If I generate a bunch of random numbers, the results are radically different if I create a new Random generator for each number than if I use on Random generator for all the numbers. The results are much more consistent and evenly distributed if I use the same Random generator.I would have thought the opposite,because creating a new Random generator each time should reduce the number of random repetitions, if a different time slice is used to create the random number.[code]......
View 9 Repliesi wanted to create a random number generator that iterates through a series of number between an upper and lower bound. say between 1 and 100. Basically I want the number generator to pick the numbers randomly and then display them until all 100 numbers are picked without any duplicates. so thats easy I can code that. But what I don't know is how to show those numbers in the order they are generated on a windows form. So i have basically a variable that I will let be changed 100 times (or however many times I want, I don't want their to be a size constraint just using 100 as an example) and each time the number is generated I want it displayed on screen (in a list or something not sure what. Hopefully some type of scrollable list) and each successive number also to be displayed in same format beneath it so that I can see the list in its entirety. What type of form control do i use for that? I could do messagebox.show for each iteration but then user is required to hit ok after each iteration and that would obviously be a bad idea if user selected a large number to work through. Anyways, code isn't exactly necessary just point me in the right direction, i.e.what control (if any) to use.how to format the change in data?
View 7 RepliesI have this program generating a firstname and lastname from a file. When I run this program I enter information in three textboxes. The first two are the salary low and high(salary1.text, salary2.text) and the last one is the number of "copies"(copies.text) that I want.. When I put a number such as 10 in the text box it outputs some of the same names. The firstname file has around 100 records and the lastname file has about 1000 records Why is it generating the same name The problem is even worse if I do something like 1000 copies.. it outputs the same thing 8 times and then does something different another 8 times
Public Class Form1
Dim sex As String
Function randomfirstname()
Dim infile As IO.StreamReader
[code]....
I was wanting to add a random number generator to an app of mine and I have the code that creates it:
Private Function RandomNumber(ByVal min As Integer, ByVal max As Integer) As Integer
Dim random As New Random()
Return random.Next(min, max)
End Function 'RandomNumber
What I can't get to work correctly is the following. I have a textbox for the min and max. The way I have it setup is when it generates it I have a MessageBox show it but it pulls the same number a few times in a row. How do I make it pull a different number each time until all numbers a pulled. I then want to add them to a listbox as each one is generated.
I need to create a multi dimensional array comprised of random numbers between 1 and 4. The reason why I need a mutidimensional array is because each number needs to be associated with a random letter of F or N. [ F or N are really Indicators or whether I should show the user Feedback on their results in the case of F. Or not show them Feedback in the case of N.] So within this array 2 random numbers will be associated with random F's. And 2 will be associated with random N's. For example the array should look like (1,F 2,F 3,N 4,N) or (3,N 2,F 1,N 4,F). The reason why I need this random array is because during the course of my application being ran 4 times (which represents the numbers) I want to insure that every time N is done 2 times and F is done 2 times. This is all to make sure that each Number 1-4 after 100 times the application is ran has the same amount of F's and N's. I was also wondering if someone knows a way to store how many times the application has been ran in asp.net so that I can recreate another random string after 4 application runs.
View 8 Repliesi already ahve a random number generator. the question is this, how do i go to the next number in the sequence when the random number generator is run.
View 8 RepliesI keep getting "Index was outside the bounds of the array." error when I run the exe from Debug and Release, but if I put my parameter -dev in a shortcut I do not get this error.Here is the code causing the problem
Dim cmdLine() As String
cmdLine = Environment.GetCommandLineArgs()
If cmdLine(1) = "-dev" Then 'problem[code].....
At the line `If aryTemp(1) < aryTemp2(1) Then the Index was outside the bounds of the array.
error appears. Can't identify why would it be outside array's bounds. Basically trying to compare Last Names to sort the records and place em back into list box.A student record looks like this: FirstName[space]LastName[space]Major[space]Telephone[space]Email[space]GPA
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Another error and I'm not sure where it is comming from:
Structure structHours
Dim StdHours As Integer
Dim OvHours As Integer
[Code]....
Shows i to have a value of 30. Where is this errors comming from?
Every time that to form loads, the tab control loads all information for each element in the array into the tab controls at once, instead of stepping through Error says index outside of bounds of array
Private Sub fillTabControl()
Try
AlbumTextbox.Text = strAlblumNameArray(intCurrentIndex)
[Code].....
Private Sub btnCount_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCount.Click
[Code]...
I'm trying to check if a user is logged on on another computer, but when it runs the check I get the following error.
Error: MySql.Data - Index was outside of the bounds of the array.
Public Function StaatOpenRegLogOpAndereMachineByWerknemer(ByVal RegLog As clsRegistratieLogin) As Integer
StaatOpenRegLogOpAndereMachineByWerknemer = 0
[Code].....
I have a text file with several rows and columns and each column is seperated by a space (" ") all I am trying to do is remove all data and leave columns 1 and columns 7.[code]
View 21 RepliesI am getting "Index was outside the bounds of the array." error when using this code:
[Code]...
I fail to see how the (random) index can be out of bounds?
IndexOutOfRangeException was unhandled.Index was outside the bounds of the array.Equ(k) = 180 / Math.PI * Math.Atan2(Math.Sqrt(1 - ecc(k) ^ 2), ecc(k))Where 0<ecc(k)<1I am certain that all value fit the above criteria 0<ecc(k)<1 and other parts of my program the same
View 8 RepliesI'm getting this annoying error box popping up on the last line of the coding below.
- The first line gets the user input, which are values seperated by comma's.. there are allways 7 value in the input
- The second line splits the values at the commas
- The third line is for testing, it basicly says that the 7th string is that value
But this third line is giving the error, how come??
PHP
Dim gatherstring As String = textbox1.text
Dim arraygather As String = gatherstring.Split(",")
arraygather(7) = "fcKCNBQ3SmnaNrywFfZEdNjKm56H9IcXJU9h+WI"
I need to create a random number genrator to generate a membership number when i open my sign up form. i need it to be shown in a text box.
View 9 RepliesIm trying to make a random number generator just for fun this is what I have so far
[Code]....
It seams right to me but in the line Dim rand as new Random the word random is underlined and it says type expected
How to make a random number generator, and I need one for what I am making. I need something that basically says, "make random number between 1 and 4."
View 3 RepliesI would like to know if what I have here is correct? could it be done better? is there something I could add or take away? or is it finished and does what it does? I'm also posting it so that other beginners can maybe look at it and learn from it, just copy and paste the code in to a new Windows Forms Application, hit F5 and then Space bar.[code]
View 16 RepliesI am doing a Coin Toss program for school and I'm getting my butt kicked by this thing. The following are the instructions exactly as my instructor gave them:Use the random number generator (see the code below) to simulate a coin toss. First ask the user for the number of repetitions. Next, set up a For loop to execute that many times. Each time you enter the loop, call the random number next method. Assume that a random value <= 5 is considered a "Heads"; a value >5 is a "Tails". That is, if the random value is <= 5, add one to an accumulator named intNumHeads. If the random value is >5 add one to an accumulator named intNumTails. When the loop finished, output the number of heads and the number of tails in a text field with appropriate labels.Dim intRandom As New Random()Dim intNumber As IntegerintNumber = intRandom.Next(0, 9) In my application I have the click event of the "Flip Coin" button coded as follows:
Public
Class frmToss
Private Sub btnFlip_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
[code].....
I have 3 label and 1 button and need to create random number in each label after the button is pressed, the numbers don't need to be unique but cant have all 3 labels with the same number, I have looked around the web but can't find the code I am looking for.
View 17 RepliesStuck programming a random number generator game. one is to guess what the random number. I have coded most of it and am pleased, but there are some hitches. a) When running the program if you guess 10 it says," Guess Higher" which is impossible as the num gen stops at 10 (if you guess 9 and the number is lower than 9 it says guess lower . . . which it is supposed to do)
b) When asked to play again if one clicks no it calls you a loser and exits the problem is it does the same if you click yes. How can I get it to simply start over if yes is clicked
c) Does anyone know how to make an image move up or down based on the input? IE if guess needs to be higher the image moves higher? Lower and it moves lower?
[Code]...
how to generate a list of numbers, from 1 to 10 in a random fashion but with no numbers repeating. For example, every time the code is run, it will return an array of numbers, each different, only using numbers from one to ten?
This may sound confusing, so i will try and explain what I am trying to do with it. I have a form that displays 10 questions and each time a user moves to a new question, i want to display a new picture. the pictures will be named "picture1" through "picture10". I want the order that the pictures are displayed to be different every time.
I want t to equal a new random number everytime but it only gives a random number the first time and then uses that same number everytime.
Private Sub Form9_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
notreduced(Label17, Label14)
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I am new to Visual studio 2008 using the express version. I wish to generate up to 10 000 random numbers without duplicates. Any appropriate container to store and print these numbers.
View 1 RepliesFor part of my coursework I need to be able to enter some customer details into a form and then to press a button which give that customer a unique reference number.
View 9 RepliesI am getting an Index was outside the bounds of the array error but I have set the array to reinitialize after each loop:
Imports System
Imports System.IO
Imports System.Xml
Imports System.Data
[code]....