Generate 200 Hundred Characters (Letters) At Random?
Mar 21, 2009
i am trying to generate 200 hundred characters (Letters) at random but i m get only 10 numbers!! also i need to search for vowels and their position this is what i got so far.
Private Sub btnGen1stchrblk_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnGen1stchrblk.Click
Dim randomChar As String
Dim randomInstance As New Random
randomChar = "abcdefghijklmnopqrstuvwxyz"
randomChar = randomInstance.Next.ToString
What I am trying to do is create a form with a button and a list box. When clicked the button will generate a list of 3 or 5 characters that have alternate letters and numbers...eg.
q2h a6j z4p d9k
[Code].....
To complicate things a little, each combination needs to be different, ie. randomised but still according to the 'letter,number, letter' formula. There are plenty of examples of randomising strings such as passwords but I cannot understand how to achieve the above.
I want it so that when someone clicks a button it generates a code in the format of XXXXX-XXXXX-XXXXX-XXXXX-XXXXX I want them to be letters and numbers combinations
I made a small license generator app with a datetimepicker, a textbox and a button on the form. When I ran the app and clicked the button to generate a license I got - 16DDD-06DDDD-09DDDDD, and each subsequent button click would get me a license with a different generated character (16444-064444-0944444, etc...).
I thought this was unusual as it should be generating a random character not a repeating one, so I stepped through in debug and the characters generated were random (161g2-06T5ip-0957H9k). I thought perhaps that I needed to seed the value with Now().Milliseconds, no luck, that still resulted in repeating characters. So I tried sleeping the thread and that generated the random values I wanted.
i m trying to generate a large random block of characters(lets say 100 characters).This below is the code i used to generate a letter but to generate lots of characters(letters) i couldn't.I then wish to display them in a RichTextBox:::
Public Class Form1 Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Dim rand As New Random Dim letter As String letter = ChrW(rand.Next(Asc("A"), Asc("Z") + 1)) TextBox1.Text = letter End Sub End Class
I nedd some help in generating a random alph-numeric password for a form that I building. The form should suggest a password that 18 characters long. The user would either agree to this password or enter their own password.[code]When I use this I get a two digit number.
I am trying to make a texas hold em game and it is of the utmost importance that my code generate a random number. But using a random number function that I always end up with a lot of the same numbers over and over again. Any ideas on how to make it "TRULY" random? [code]
I want to creat a programm with an interface that can do:
1.Open a text file 2.Choose the file 3.Display the file(in a dialog box for exemple) 4.Count the characters from it and then display the result in a textBox
I made this program but the problem is that the result is not correct.For exemple:my text file has 14 characters and if i run the programm the result from textbox is 84.I don't know what is wrong?!I'm biginner in VB and i what to know how i can fix this error.[code]
I have to (for class) make a program that generates a safe passwords for people to use. My teacher wants us to make the passwords vary in length, include numbers, letters and upper case letters. I've been able to write code that prints out a random string but it includes unrecognized characters for most passwords. How would I write the code to create a random string that has parameters? (in this case upper case lower case letters and numbers).
I want to do is have textbox1.text show 10-20 characters that are random letters and numbers when i press button1. I have tried to do this but I am not so great with generating anything that is random. If possible have it be a mix of Capital and Lowercase letters.
I am using Visual Basics 2008 Express edition. I want my program that I am making to generate a random amount of numbers and letters in this form when I click Button1. WM9RX-GG6J2-4WKD9-FDJWM-TYH76 Is this possible?
So in my program I have a database where I send info such as passwords, is there any way to (in an easy way) encrypt the password before sending it so instead of sending "mypassword" to the database I send a random collection of letters and numbers like "shH3n2ja"? I only need two functions, encryptPassword, decryptPassword.
what i want to is convert this string to something like this
2. JXK2LB AP2WXB S1P0XE ZXPA3H X1LAKW DOXPS3
both 1 & 2 the above strings are fictitious (i made them up to make my point clear)
I am trying to make a licensing system for my VB 2010 express application. (2) above will act as a serial key which can be derived from (1) which is an encrypted form of something unique of the client computer.
'm attempting a program and need to generate 10 random numbers between 1 and 52. However all the numbers must be different. I'm trying this in a For Loop. I'm not terribly amazing at this so all I have so far is:
Dim B, I, J, max, min, card() As Interger max = 52 min = 1 Randomise()
[Code].....
What am I doing wrong and what is the ultimately simple solution I know the internet can provide for me?
I've published a different take on a log in system on CodeProject [URL] and I've got some free time, so I thought I'd have a look at password recovery/reset.It was suggested on the article that I look into sending the account owner a single use, random url where they can reset their password if the account gets locked because of too many invalid login attempts/forgotten password.So far, I'm thinking I just have to generate a random string in a "recovery" field in the database table for the user's row and then check if the requested URL on the site is the same as the value for that field, then dynamically draw the page server-side.
This code is in VB6.0I have 28 numbers in sequence (eg 1-28), they are randomly generated and displayed in a label. I dont want a duplicate number displayed in the label. Pls how do I do this. Below is how I generate numbers at random. Now I want to make sure there is no duplicate number displayed in the label.[code]
How to generate random letter but it must between a-z only, I mean is no aa,ab just 1 letter like a,b,c, ..... z.except letter e, because letter e cannot be use as a variable.
I need to generate a lot of random 2 character strings for my application. it's a VB console application. basically what I have tried for random strings is this:
I need to generate random strings in vb.net, which must consist of (randomly chosen) letters A-Z (must be capitalized) and with random numbers interspersed. It needs to be able to generate them with a set length as well.
I have this school assignment to generate random numbers.Can someone please check if this is the right.Also i am not able to Generate this many numbers in the specified range and keep track of how many of each are generated in an array of counters.[code]....
I have a PDF document that has several hundred fields. All of the field names have periods in them, such as "page1.line1.something"I want to remove these periods and replace them with either an underscore or (better) nothing at allThere appears to be a bug in the itextsharp libraries where the renamefield method does not work if the field has a period, so the following does not work (always returns false)
Dim formfields As AcroFields = stamper.AcroFields Dim renametest As Boolean renametest = formfields.RenameField("page1.line1.something", "page1_line1_something")
I have an attribute that I just added to my database to hold confirmation numbers. The only problem is they are all null so I am getting errors. Thus I need a method to generate random confirmation numbers (no duplicates). The column entries have a max size of varchar(20)
