Random String
How do i produce a random string.anything from A-Z or a-z or 1-9 for the password.how do i do that
View Replies
ADVERTISEMENT
Generate Random String
I need to be able to create some license keys for an application. Ideally
these wouldn't be too long in length (ie, easier to remember/type in), but I
would like them to be auto generated and a check made to see whether or not
that key has already been used, something which could generate up to about
10000 keys (or more if the string doesnt have to be too long) would be very
useful.
A combination of letters, numbers, upper and lower case is needed.
I could sit here and start plugging away at this, an array for numbers, an
array for letters, a random test for uppercase/lowercase etc, but it occured
to me that I'm probably just reinventing the wheel a bit here, someone must
have done this before!
Has anyone produced anything similar to this in the past?
Random String Generator Problem
I have the following function which generates random strings:
function GenerateRandomStr(nLen, skipRandomize)
dim i, strTmp
if not skipRandomize then Randomize
strTmp = vbNullString
for i = 1 to nLen
strTmp = strTmp + Chr(fix(26 * Rnd) + 65)
next
GenerateRandomStr = strTmp
end function
But it is so happening that it is generating duplicate string which is causing the system to fail. Can anyone tell me why it is behaving in that way??
Displaying Images At Random From SQL Query String
I have a database of images with captions that I need to display at random on an ASP page. Once I have pulled out my recordset, what's the best way to select on item at random from the recordset to display? Also, at first I might have only 5 items in my recordset, how can I avoid the same item repeating 3 times in a row if the person clicks refresh?
View Replies View RelatedHow Do I Make Random Images Not Random?
However, what I want to do is include a request.querystring("ID"), so that IF an ID is defined, eg ID=3, , it will display the relevant (not random) information. I've tried this every way I can think and get type mismatches, etc etc. It's probably really simple but I can't see it.
<%
limit=3
redim link(limit)
redim image (limit)
link(1)="xxx"
image(1)="image1.jpg"
link(2)="xxx"
image(2)="image2.jpg"
link(3)="xxx"
image(3)="image3.jpg"
randomize
random=int(rnd*limit)+1
%>
<center>
<a href="<%= link(random) %>">
<img src="<%= image(random) %>" border="0"></a>
Making It Random (getting Random Numbers)
I just wanted to know whats the best way to generate 50 or say X amount of number at random without having to repeat any of the previous number...
so far I've the following:
[VBS]<%@LANGUAGE="VBSCRIPT" CODEPAGE="1252"%>
<%
function RandomNumber()
dim theRandom
Randomize
'RandomNumber = Int((upperbound - lowerbound + 1) * Rnd + lowerbound)
theRandom= Int((99 - (0) + 1) * Rnd + (0))
if (theRandom<10) then theRandom = "0" & theRandom
RandomNumber = theRandom
end function
%>[/VBS]
and then I've this in the body of HTML doc: Code:
Random Token Generator - Not Really Random
We have the need to have a random token (a 16 char alphanumeric field) to be used as the key for one of our SQL tables. I have created a random token generator, however after only 3 months in production, it appears that we had an instance where a token that already existed in the tables was created. There are 3810 records currently in the database so it isn't like there are billions of records there.
I contacted an old college buddy of mine who is a mathematician, and he claims, assuming that random really does mean random, that the chances of getting a duplicate token are 1 in 79.5 septillion (79,500,000,000,000,000,000,000,000).
So my conclusion is that this was either a complete freak of nature occurance, or my random generator isn't really all that random. Here is the code behind how I am generating this: Code:
Random Number Not Random
I am trying to generate a random number. I am using randomize and then rnd to return a decimal number between 100 and 120. This will give me a longitude. I am doing something similar to generate a latitude.
I created this on a page which refreshs every minute. I put these points into a map and they are showing up in groups of straight lines. Since rnd is time based will refreshing every 60 seconds return similar numbers?
Web Forms / HTTP File Upload / String.Split A StreamReader.ReadLine() String
I'm developing an Asp.NET system to take a CSV file uploaded via the web, parse it, and insert the values into an SQL database. My sticking point comes when I try to split() the string returned by readline() on the file.
The following code snippet works for me:
tokens = "one,two,three,four".Split(",")
for each token in tokens
response.write("<td>"+token+"</td>")
next
However, if I take the next line in the CSV, read using StreamReader.ReadLine on the PostedFile.InputStream, I receive "Object reference not set to an instance of an object." which I have narrowed down to be my string holding the line. Further investigation reveals that no other string member functions work on my line (.ToCharArray, .ToString, etc).
I suspect that StreamReader.ReadLine is not correctly returning a string, even though Response.Write(line) displays what I would expect .....
String Functions Run On Empty String
I have a form in which several elements are expected to be all digits. Some of those elements can be left empty, but if specified they must be all digits. I have this Sub to edit them: ....
View Replies View RelatedText String To A Interger String
I am pulling info from a sql server By default the query pulls back the inforamtion as text.Therefore when I go to calculate some figures its giving me a type mismatch error.
Is there a function in can call to convert a text string to an integer string using
rstSearch.Fields("name").Value .To pull back the info in a for loop
Error Type:
Microsoft VBScript runtime (0x800A000D)
Type mismatch
Random Row
I want to display data of a Random Member on my page.. and I did a search in these forums and I tried to do this:
[CODE] SELECT tblMiembros.*, tblDatosPersonales.*
FROM tblMiembros, tblDatosPersonales
ORDER BY rnd(isnull(tblMiembros.ID_APLICANTE) * 0 + 1)"[/CODE]
This doesnt throw any errors. but it always displays the same row... (first in database)
am I doing something wrong? am I missing something?
Regarding Random
I have a client asking me about random images on his site, basically I am using the following code:-
<%
RANDOMIZE
Response.write("<IMG SRC='../gfx/bg-img0" & INT((3)*RND()) & ".jpg'>")
%>
Agreed its not the best code, but he is finding that the same image could be repeated like three times in a run.
I have an include file which displays the image, and the random script is placed inside that include. So when he is going from page to page this is where the issue lies.
Can anyone help me out here, is it even possible to have a different image load each time, and not have them repeating.
Random Value
I am using random number to be used as a unique identifir. Since random numbers are in decimals I am using going to convert it into an integer and since I need to append this Id into my URL, I am converting it into a string. SO my formula looks like this.
CStr(Int((Highest-Lowest+1)*Rnd+Lowest))
S0 now every time a new record is generated would this formula generate a unique number for unique identification in the table. I can't see how it can do it. Say A user is assigned a random number; then another user subscribes so how would the server determines that the random value assigned to next user is not already assigned to any other user.
In case if this can't work (a unique ID for every user) then I'll stick to this very same formula and after the random number is generated, I'll check this number with the table in the database and see whether it's been assigned already. If yes, I'll request another random value, if not then I'll go with it. Is this the right strategy?
Random Image
I have done random image display with the help suggestion from this discussion form. now I want to provide link on each image. i.e. all the images display randomly, should have different link. is it possible? if yes, how?
View Replies View RelatedRandom Images
is there sombody who can helpme witht he following, i am ''pretty new'' to
php and am looking for a script to show images randomly at a 10/ 15 seconds
interval. is there anybody who can help me with this or does know where to
find a good template script for this?
Random Image
example:
When u see some sites ,
the advetisement images are changing ,
when ever the browser is refreshed...
.....
like tha i want to do that.....
Random Image
I have the below ASP function to display a random image from a folder.
<%
Function RandomImage(strPath)
Randomize()
If Right(strPath, 1) <> Chr(47) Then strPath = strPath & Chr(47)
strPhysical = Server.MapPath(strPath)
Set objFSO = Server.CreateObject("Scripting.FileSystemObject")
Set objFolder = objFSO.GetFolder("C:Inetpubwwwrootpag-siteimages
andoms")
Set objFiles = objFolder.Files
For Each objFile in objFiles
strFile = LCase(objFile.Name)
strFiles = strFiles & strFile & vbTab
Next
strImages = Split(strFiles, vbTab)
If UBound(strImages) > 1 Then
RandomImage = strPath & strImages(Int(Rnd(1)*UBound(strImages)))
End If
End Function
%>
and this places the image in the HTML
<img name="Intropic" src="<%=RandomImage("images/randoms/")%>" width="211" height="158" alt="" />
but sometimes the script places a ._ before the image file name in the outputted HTML?
Getting Random Errors
I'm afraid I have a technical problem here. Basically what happens is that I'm getting some random errors(like Type mismatch... etc) that shouldn't under normal circumstances occur. Then I connect to my server via remote desktop and Recycle the application pool on which my asp pages run. Errors then disappear
View Replies View RelatedRandom ASP File?
I have a file where i want to call a random asp file using the "include file" statement. I know it can be done with images, but can it be done with other asp files? and how?
View Replies View Related3 Random Records From DB
I want to take 3 records from a database. The selection must first take any record marked as priority and then random records (so there could be 3 priority records and no more or 1 priority and 2 random etc)
My theory is to build a recordset filtered by records marked priority, and if there are less than 3, build a second recordset of all the other records.
Questions
1, how can I select random records form the second recordset, without selecting the same one twice?
2, OR, could I write a sql statement which would randomly select 3 records from my table
3, Or is they a way I could write a query (view) in Access which would do the whole lot for me (select the priority records and then random records up to 3)?
Random Code
I set up a random code for people registering with my site.....
letters="1234567890abcdefghijklmnopqrstuvwxyz"
for i=1 to 16
Randomize()
rNum=Int(Rnd()*36)+1
code=code&mid(letters,rNum,1)
next
but for some reason it sometimes saves code as an empty string. When I register a fake name, ie zzz, it seems to work fine, but for some of my members is saves as an empty string.
Random Number
trying to get a random number from 0000 to 9999, is there an easy way to do this? i'm using this for a unique filename and want it to be 4 digits from 0000 to 9999.
View Replies View RelatedShuffling / Random
i have a db where ± 15 users stores multiple second hand items with images. Now i wish to display on the openingpage a list of all users with 1 item + image. So far no problem.
But now i wish to change the order of the users every time the pages open.
How can i shuffle the recordset before i load the users in a array, or how
can i shuffle the array after populating with the users? Code:
Random # Generation
I'm trying to sort a list of 10 people into two groups--RANDOMLY. I've gotten as far as to generate a random number and assign a name to it. I just need to know how to generate 9 more numbers, making sure no numbers/names repeat. Code:
View Replies View RelatedRandom Record From DB
I have a DB with 10 items and an SQL statement:
"SELECT * FROM myTable WHERE Activate=true"
How do I make it so that every time the page refreshes it will display a random record?
Random Include
I'm trying to get one of 3 files randomly included in an ASP page.
The thing is, when the code is printed out, it becomes a comment and it doesn't .. "include" the page..
Btw: I'm a PHP novice, and have no experience with ASP. I just looked up a few randomization tutorials and tried to get this working.
Random Numbers
I have a problem creating random numbers. I basically have this
Randomize()
iRandom = Int(10 * Rnd + 1)
If I do not wait a few sec before hitting the page again it will create the same random number as generated a few seconds before.Any idea why it is like that? Another way to reprocess the "bug" is to just fit F5 few times in a row and you end up with the same number being generated. Its annoying and I need some help to "fix" it!
Random Text
I have a script which show quotes randomly, Here is the code::
Code:
<%
Dim quotes(3), iNumber, iRandom
'Dim an array of 3 variables
quotes(1) = "This is quote 1"
quotes(2) = "This is quote 2"
quotes(3) = "This is quote 3"
iRandom = ubound(quotes)
randomize 'call random function
iNumber = Int((iRandom)* Rnd) 'get random quote number
Response.Write(Quotes(iNumber)) 'write output to screen
%>
How can i do a thing like:: (for example)
Show the Quote(1) on 10th September 2004
Show the Quote(2) on 11th Sep 2004
Show the Quote(3) on 12th sep 2004
Is that possible?
Random Number
x = ROUND((0.9+1.005*RND()-0.4),1)
y = INT(y * x)
This is what I'm trying to acheive:
- "Y" has a preset value between 1-100
- "X" should be random between 0.8 and 1.2
- "X * Y" is the final value of "Y" as a whole number
What I'm struggling with is getting the value of X to be random between 0.8 and 1.2....
Random Select
I have the following select statement, but need to randomise the results to draw just 1 record at a time for banner displaying. How can I do it? ....
View Replies View RelatedRandom Records
I know how to generate random record from a database, the problem i need to overcome is like this:
1.If the user refreshes the page is a way i can control the randomized data from not repeating itself on display?
Generate Three Random DIFFERENT #s
I'm trying to generate three random different numbers to display three images on a page without repeating them. I can't seem to be able to get them to always be different. There's probably some simple solution, but I can't figure it out.
Here's my current code: ....