Displaying All Prime Numbers In ListBox

Mar 13, 2010

I am suppose to write a program using if statements and loops: Create an application that reads an integer number from the user and then displays in the List Box all prime numbers (for this project we are going to violate "positive" rule and make our prime numbers be negative as well) between user's number and zero 5 numbers in one row. The application also displays how many prime numbers there are between user's number and zero, and the total sum of all these prime numbers.

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Loop Displaying Prime Numbers?

Jun 20, 2012

I'm having a serious brain fart over this but I need a looping statement that will display all prime number from 6 to 10000.

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VB - Relatively Prime Numbers ?

Mar 1, 2012

I have this number x and i wanted to find all numbers which are relatively prime to it.

My code so far:

For i = 1 To x-1
if [number n is relatively prime to x] Then
ListBox1.Items.Add(x)
End If
Next

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How To Generate Prime Numbers

Oct 11, 2009

I want to rite an application that will print first n prime numbers. For example if user enters 7 you should display: 2 3 5 7 11 13 17 Assume that the user will enter only integer values from 1 to 100.

this is what I have so far

Dim intNum As Integer
Dim intX As Integer
Dim strOut As String

[Code]....

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398 Million Prime Numbers And Growing?

Aug 17, 2011

[URL]

Each set of ( 1 million ) prime numbers is in a ZIP file just click on say 1st Million

on the left to download a list as a ZIP file.

Here is a similar page which is a lot easier on the eyes:>>

[URL]

These are of course great to use in any security application or as part of any password.

However with the list so readily available on the internet is it such a good idea to use a prime number as part of a password? Food for thought perhaps? ....

I guess it depends on how long it is too. :-)

You could try to remember one that is close to an important date or other number that you know maybe?

If you are more paranoid use more than one prime number in a password with other characters ( UPPER and lower case letters etc ).

[URL]

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Prime Numbers In Console Application?

Mar 4, 2010

i need a prime numbers in console application in vb.net

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Prime Numbers With Inline Functions?

Jul 9, 2009

Just out of curosity, what's wrong with the following line. I'm trying to create a range of integers (3,4,5...,50) and then filtering out only those numbers which are not divisible by any integer less than themselves (bruteforce way of finding primes).

Enumerable.Range(3, 50).Where(Function(x) Not Enumerable.Range(2, x - 1).Any(Function(y) x Mod y = 0))

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Program For Prime Numbers Stumped?

Feb 25, 2010

Simple Program for Prime numbers stumped?

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Vb Function For Making Prime Numbers?

Nov 21, 2010

I made a form with a two text boxes for user input.A (lower bound) and an (upper bound), and then a text box to display all prime numbers in that range.I can't figure out what I am doing wrong, my error checking works properly but my math onlyreturns a true or false.

Function
Prime(ByVal findPrime
As Int32)

[code].....

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Basic Prime Numbers Array Program?

Apr 20, 2011

First off, I'm not sure if this is the right forum, please move it if it isn't. I am only just beginning with visual basic and I am trying to write a basic program to calculate the prime numbers from 1 to 100. This is what I have so far:

[Code]...

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Create A Program That Finds Prime Numbers?

Oct 7, 2010

So I have been assigned to create a program that finds prime numbers. And then for the final part of the program I need to have the computer find the millionth prime.

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Determine Prime Numbers - Calculate Button?

Mar 17, 2011

I am creating an application that takes two numbers (lower and upper) and determines the prime numbers

Public Class primeNumber
Private Sub calculatePrimesButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles calculatePrimesButton.Click
'declare variables
Dim number As Long
[Code] .....

Once I hit the calculate button nothing comes up. I've tried adding the first code inside the function with the remaining code but no result. Now I'm putting the first code in with the calculate prime button. I am guessing there's a sqrt method that needs to be applied but I am not sure if it should be part of the function or the main?

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Function To Check For Prime Numbers Within A Range?

Dec 4, 2010

I have two user inputs (as textboxes) for two numbers I'm looking to check for all the prime numbers with the range of those two numbers and display them within a multiline textbox, however my code returns nothing but zeros, and I have seen easier ways to do it without functions but I am curious as to how to go about calculating primes within the function.[code]...

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Make A Program For Finding Prime Numbers?

Dec 21, 2011

I needed to make a program for finding prime numbers. The logic is that you have to put limits n & m and then LOOP and odd-integer P between n & m inclusive. I have a button to click on my form that displays 2 message boxes, one saying " enter upper limit" and the other say "enter lower limit". I need now to get the results of the odd prime numbers between the limits into a list box!

Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

[Code].....

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Calling A Function To Display A Range Of Prime Numbers

Dec 5, 2010

I am trying to create a form that allows users to input two numbers a high bound and a low bound then when you click the calculate button it determines all the primes within the range and displays those numbers within a multi-line text box. It seems I have everything working except how to display the prime numbers, the result from the following code displays nothing but zeros so I suspect that the range is not being saved somehow? I have asked this on other sites and people just give me completely different code or their own, can anyone help me with this specific code without changing the underlying code, I have a feeling I might be missing a variable or I am calling the function incorrectly.[code]

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Made A Program For Generating Prime Numbers In A List Box?

Dec 24, 2011

So I made a program for generating prime numbers in a list box. My initial code had them listed like this:

2
3
5
7
..ect

Now I have them listed in pairs like this :

[Code]...

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Simple Program To Show Random Prime Numbers

Feb 25, 2010

Basically what I am making is a form with just one button and 2 text boxes. The purpose of it is that when I click the button 2 random PRIME numbers between 100-999 will show up in the boxes. With my code I have now, the numbers that show up in the boxes aren't always Prime.

My current Code is.......
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Randomize()
Dim p, q, i, j As Integer
[Code] .....

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VS 2010 Basic Prime Numbers Array Program?

Apr 20, 2011

First off, I'm not sure if this is the right forum, please move it if it isn't. I am only just beginning with visual basic and I am trying to write a basic program to calculate the prime numbers from 1 to 100. This is what I have so far:Dim flag As Integer Dim ar(101) As Integer

[Code]...

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Sum Numbers In Listbox - Add All Numbers Together And Display The Result In A Label

Jan 10, 2010

I'm using VB08. I've populated a listbox with numbers and I want to add all those numbers together and display the result in a Label. I've heard about using parse but I don't understand exactly how it works.

This is the code that I have that i think should work.

Dim lblTotal As Decimal
Dim sum As Double
For Each decAdded As Decimal In Me.lstRunningTotal.Items
sum += Double.Parse(decAdded)
Next
lblTotal = FormatCurrency(sum)

When I run it, nothing happens. My "For Each" statement I'm not sure if it's doing what I think it's doing. I can't believe I spent 6 hours banging my head against the wall but I finally got it figured out.

This is my revised code:

Dim sum As Decimal
For Each decAdded As Decimal In Me.lstRunningTotal.Items
sum += Decimal.Parse(decAdded)
Next
lbl_Total.Text = sum

Just some suttle changes made the difference

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Display Grades In A ListBox Based On Numbers From Another Listbox?

Jun 23, 2012

I enter Names and scores from a text box. Once i press "show me the array" my listbox gets populated with the names and scores. [code]...

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Displaying 8-bit Numbers From A Microcontroller In Real Time If Possible?

Apr 26, 2010

I've already wrote a simple program for connecting to a serial port that can send data to the microcontroller, do some basic arithmatic and transmit it back to my Form. This was just to see if I could set up the conection.I have a PIC Microcontroller giving an 8-bit number thats is taken from an external sensor device.What I want to do now is to present this data from the microcontroller in a textbox as a number either in real time (as the sensor output changes) or if not possible, on request (using a button).

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Displaying Multiple Random Numbers Using Labels

Aug 7, 2011

I'm designing a program to display 6 random numbers using labels. I know I'll need an array to accomplish this. I am trying to put the integers into the array and displaying them on 6 different labels

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Show A Textbox Displaying Numbers With A Control?

Jun 20, 2011

I have three Buttons labled "Single" "Double" and "Triple" and four textboxes, one for each button and one to display the results. Here is how it works. Each time I click on one of the buttons, it increments itself by that number...for example if I click on Button with the word "Triple" on it I will get the result '3' in the adjoining textbox. If I click it again the number will change to '6'. This holds true for all the buttons. I have this part of the program working well. there a way to have the addition of all these numbers appear in the fourth textbox WITHOUT having to use another button. In other words I want the fourth textbox to constantly update as I'm pushing buttons.

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VS 2008 Displaying Line Numbers With A StackTrace?

Jan 26, 2012

I'm trying to show the line numbers with a stack trace when an exception is thown in my app.

This code is in the UnhandledException of ApplicationEvents:

e.Exception.StackTrace.ToString

It currently returns:btnOK_Click(Object sender, EventArgs e) at with no line number at the end.

I have set the project to create debugging info in Project Properties > Compile > Advanced compile options > Generate Debug Info = pdb-Only, and deployed the PDB file with the app, but still I don't get any line numbers.

I'm using VS2008 Standard, vb.net.

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Displaying Numbers In Their True Form (not Scientific Notation)

Mar 12, 2009

6/0
6/1E-10
6/2E-10

[Code].....

I need those in there true form not scientific notation, how do i do this in vb.net?

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.net - Displaying Data In Listbox In VB?

Mar 28, 2012

I want display data from database in Listbox...Here is my code, It is not working. In Listbox it is displaying as Object[,].Array..

[Code]...

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Displaying Data In Listbox?

Aug 10, 2010

i have problem in displaying data in list box after i click in any row in datagrid view
here is the code

Dim sql As String
Dim conn As New System.Data.OleDb.OleDbConnection
Dim lst, lst2 As New ListBox

[code]....

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Displaying Images In A Listbox?

Mar 10, 2009

I have a listbox displaying information about different workstations detected on a local network. Each line in the listbox is a different device. I would like, if possible, to display images on the end of each line (A green dot for one rule, a red dot for another, etc).

I have the images of the 'dots' as very small gif files.

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Displaying Items In A Listbox

May 4, 2011

My program is working and doing everything it is supposed to do outside of two things. My program is supposed to take the items that are under 5 items and show up in a listbox saying they are low stock by clicking file and then display low stock items. The other problem I have is that I am supposed to show everything in the inventory that has a retail price given to it in the other list box that is blank on my mainform. The attempt I have made on the low stock inventory makes the program go into debugging mode.[code]

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Displaying Database Record In ListBox

Dec 24, 2009

I am displaying four fields from a access database. This code displays the records in listbox4.
Me.ListBox4.DataSource = DB
Me.ListBox4.DisplayMember = "fldRecNo"
Using the doubleclick event, I would like to display on a label the record number that I doubleclick.
Windows 7 and VB 2008

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