Hello guys. I want to build a program using vb and is a random number generator. My problem is that i search all over the internet and i. Title, Use the Cryptography API to generate secure random numbers with Visual Basic Description, This example shows how to use the Cryptography API. I do not have any idea how to make a random number generator, and I need one for what I am making. I need something that basically says.
Related videosVISUAL BASIC 2005 - RANDOM NUMBER GENERATOR
I had to create a piece of code that will give me a set of randomly generated keys. Each key had to consist of letters and numbers, and the letters could be either randomly lowercase or uppercase.
Looking at some sample code on the web, I could not find what I needed. All the examples I found either generated numbers only, or letters only. I also wanted this random key to be random number generator visual basic 2005 on a certain rule that made it "not straightforward" random, so, I came up with this little piece of code. You feed it with a string of letters: KeyLettersa string of numbers: KeyNumbersand how many characters you want the random key to be: We then call Generate which goes and generates a random number through the Randomize statement and the Rnd function.
Multiply Rnd by -could be any number we choose which is sufficient enough to bring the value above zero. If the resulting number is an even number, then our random character will be a letter. If we get an odd number, then our random character will be a number. To generate a random character, we generate a random index for one of the character arrays depending on what our random character will be. If we are generating a number, then that is our random character.
If we are generating a letter, then we need to determine whether we want it uppercase or lowercase. For that purpose we generate another random number by multiplying the value of Rnd by 99 — could be random number generator visual basic 2005 other number too — and then determine tullio de piscopo stop bajon yahoo the result is even or odd.
This time, we capitalize the letter if we get an odd number, otherwise we leave it as it is. And so on, … the loop keeps "looping" while using, and we use a StringBuilder to construct our resulting stringuntil we've generated the desired number of characters for our Random Key.
We convert the StringBuilder to String and return it with the function. I highly recommend it. This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.
Sign in Email. Forgot your password? Search within: Articles Quick Answers Messages. Comments Tagged as. Stats Laith M. Zraikat28 Jul Rate this: Please Sign up or sign in to vote. Download demo project - 2. Using the code The way it works is as follows: Generate Console. WriteLine " Press any key to exit ToInt16 Random number generator visual basic 2005. ToUpper End If sb. ToInt16 NumbersArray. A list of licenses authors might use can be found here. Zraikat Web Developer. Random Number Generator Recommendations for Applications.
License Key Generation. C Random String Generator. Angular 7 with. NET Core 2. Member Jul 1: Baiju Nagori May Zraikat 5-Aug 1: Shane Story 6-Feb 5: Shane Jesus loves you!
John 3: Anthony Granger Feb Go to top. Article Copyright by Laith M. Article Alternatives Comments 11 Add your own alternative version Tagged as. NET Laith M. Rate this:. Web Developer. United States. First Prev Random number generator visual basic 2005. Hi Laith M. Zraikat, I want to know which is the license of your code for commercial use for RandomKeyGenerator. Random number generator visual basic 2005 Thanx afridibest Apr 1: Thanx it help me a lot Good but smiling4ever Aug 4: Append RawChars.
Chars xx Next Return str. Good but Baiju Nagori May Good idea, thanks. Good but mhovidz Apr 8: Good day! Do this code do not create a duplicate value? How to create a program that can generate a string with no duplicate? Please help me. Mark Angelus V.
Movida Programmer. Good but smiling4ever Apr 9: You cannot prevent duplicates. Good but Laith M. To prevent duplicates you would have to save each key you generate in a DataTable and check all subsequent keys against that DataTable to see if it exists.
Another simple way is to create a Cache object using the generated key as the "key" in the key-value pair. Then on every generation you check to see if a cache object with that key value exists.
Good but Shane Story 6-Feb 5: Hey it is interesting! Thanks for the code. Good but Anthony Granger Feb Anthony Granger. Randomize Do: Write "Maximum length: ToInt32 Console.
End Try: Write "Minimum length: Write "Amount of passwords: Next System. WriteLine "Make sure to change your password regularly. Write it in your head, and no-where-else.
Random number Generator between 1 and 4
Need to download code? View our list of code downloads. Register Now. View Unanswered Topics. Password Reminder Password Register. November 21st, Random number Generator between 1 and 4. 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. Or not show them Feedback in the case of N. And 2 will be associated with random N's.
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 after 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.
Thanks for any advice. Old Pedant. Thread Tools. BB code is On. Smilies are On. Trackbacks are Off. Pingbacks are On. Refbacks are Off. All times are GMT The time now is User Name. Remember Random number generator visual basic 2005 Password Reminder. Mark Forums Read. Visual Random number generator visual basic 2005 Basics If you are new to Visual Basic programming with versionthis is the place to start your questions. For questions about the book: Welcome to the p2p. This is a community of tens of thousands of software programmers and website developers including Wrox book authors and readers.
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