I have an ID field where I need to insert unique ID's
the ID should be like -
S- (YY)(MM)9999. where, (YY) is year, (MM) is month and 9999(is a four digit random number)
for example - S-11030001
I want to generate a unique random number everytime a user submits a form. As the form is submited the data of the form should be placed in a database and a unique random number should be generated so that the user can later use this unique random number to reterieve his details from the database that refer to his unique random id. The unique random number should be atleast 9 digits long.
View 5 Repliesi'm using Random function to generate random numbers and store them into arrayTell me how to do This is how an array is declared
[Code]...
I know there is a class called Random but how do I generate random numbers manually? without using Random class.
View 6 RepliesI am trying to generate a random number from within a class and am getting "Type 'Random' is not defined" - does anyone have any ideas. Here is the code
**note the code works on an aspx.vb page, but not from within my class
Dim RandomClass As New Random()
Dim RandomNumber As Integer
RandomNumber = RandomClass.Next(3)
I want to generate a unique random number everytime a user submits a form. As the form is submited the data of the form should be placed in a database and a unique random number should be generated so that the user can later use this unique random number to reterieve his details from the database that refer to his unique random id. The unique random number should be atleast 9 digits long.
View 3 RepliesHow to create sql server table with unique random identity between 45365 - 5782155129452 ?
View 5 RepliesUsing Stored Procedure (SQL) Am looking to generate a 10 digit alphanumeric number. How do i proceed.
Example:
132AXD1LKM
AD157LKJ1A
I have to generate a unique customer code like this-
'cbd'+first letter of customer name+incrementer
here
cbd is hard coded means reamain fixed in each customer code first letter of cust_name is like
Bell Companies- B
and incrementer must be four digit number like 0001,0002,0888 etc.
Here incrementer
should start with 0001 for each customer means for EX-
BELL COMPANIES - CBDB0001
then it should increment for customers having name started with B
TEL POWERS- CBDT0001
then it should increment for customers having name started with T
I have to generate a unique token no which will have three fields an incrementer,comp_code anddate.I have problem in generating a unique incrementer. Incrementer should be incremented by 1 like 0001,0002 etc, should be unique and based on no of record inserted.
View 5 RepliesFrom what i know Random() is initialize to the current time. If two connections hit during the same second i should get the same two random numbers? With a large site that can be likely. Locking is bad so how should i solve it? note: the number is used for the session id.
-edit- i am stuck using a long. It feels wrong to shorten a 128bit GUID
how to pull a RANDOM item from the database when using LINQ. There seems to be a couple of differnet ways to handle this. What I need to do though is pull a RANDOM item from the database that the user has not seen before.
The data I am pulling from the database is very small. Is there any way I can just hit the database once for 1000 records and then randomly scroll through those?
Should I put a cookie on the users system recording the IDs of which items they have seen, pull a random record, check to see if it is seen and if so, pull from the database again? That seems like performance issues just waiting to happen.
I am trying to create a Question Bank application for one of our clients. What is the main challenge I am facing is a typical demand from the client. What they want is : Whenever users open this site a set of random numbers(range say 1 to 20) should be generated and questions with the QuestionID(column in a table in Database) according to the numbers would be displayed in the page. I have done it to some extent but, still not satisfied with it.
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
int[] n = new int[10];
int rn;
bool Check = true;
int[] n1 = new int[10];
Random rand = new Random();
n1[0] = rand.Next(1, 21);
for (int i = 1; i < 10; i++)
{
rn = rand.Next(1, 21);
for (int j = 0; j < n1.Length; j++)
{
if (n1[j] == rn)
{
Check = false;
break;
}
else
continue;
}
if (Check == true)
n1[i] = rn;
}
for(int i=0;i<10;i++)
Response.Write(n1[i] + " ");
}
}
Here are some O/Ps : 11 13 14 4 16 0 0 0 0 0 (1st load)
5 9 8 1 0 0 0 0 0 0 (after refreshing the page)
16 10 20 6 8 17 11 7 0 0 (after refreshing again)
I want that, all these digits in each refresh should be unique(which is comming) but all set should 10 digits(this is not happening).
I have a form and I want each form to have a unique number when it is filled out so it will go into the database. How can I set this up so when the page loads in the label it will say 1 then the second time it loads it will say 2?
View 1 RepliesI currently designed a school result portal. If the students want to view their result, they input their student school number in a text box to search out their result. But this is not secured because anybody can look up any students result if you have the number which is even written on their school uniform for identification.
I have being trying to secure this result by trying to generate or code special numbers that the students will input with their school number. The special numbers will be random numbers and may be from 10 and above, it might even contain letters. How do
I code this. I believe this is the best asp.net forum. I want the students to be inputing this special unique numbers and their student numbers so that there result will be avaliable to them.
I want to generate a 16 digit random account number that should be unique in database for every new user of my website. kindly guide me how can i generate a 16 digit unique number.obviouly i understand that i would have to check that number in my database table for uniqueness and if that generated number already exist then i would have to generate it again.
View 11 RepliesI would like to create a confirmation number using both letters and digits just like when you book your flights, the confirmation number looks like '9Z3RG6R'
View 7 RepliesI'm trying to implement a code that will generate a fix lenth alphanumeric code; number from 0...9 and capital letters A...Z. I want the code to be formated as this: XXX-XXX (where X representes a random character between 0...9 and A...Z). It doesn't matter if the letters and/or the numbers repete. But it will be great if the don't. I'm using VB.Net. How can I do this?
View 4 RepliesI need to generate a random code using c#.
This code must be fulfill below condition.....
create approximately 8 random characters containing ( A to Z , and 1 to 0 only) .
is it possible to make an online form generate a random reference number unique to that form?
I'm using C# and .net 3.5
I need to generate a random number which starts fro 750000 and should increment one by one for generating other number.
ex: 750000
second it shoul dbe 750001
I want to generate simple random number in webpage ... like remain one button,when I clicked show a random number.
View 6 RepliesI need to generate random number in oracle.i need to get always 3 digit random number(100 to 999)
View 5 Repliesi want to generate random URL for the users who want to download my file which is located in my server (http://servername/book/book.pdf) after he bought from us. and that URL should expire after few days lets say (1 week) .
View 2 RepliesAnybody know of any easy way to generate random distinct colors (preferably the same random each time). I am trying to create a MS Chart stack graph, and each series is based off of a service order type, but that list can grow, so I'm creating my series in a loop based off a distinct query and want to assign a color to them dynamically at run time. It would be nice though if they didn't change every run.
View 3 Replies