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.
I 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'
I'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?
Recently, I am working on the website where I am generating random number and storing it in database as the primary key. So, this key would be foreign key for many table, now how would I generate the random number and check if random number does not have duplication? Is there any function to check if number is not duplicate?
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.
generating random numbers in texbox and then submit to database. code should check if the generated number already exist in database before submiting to database.
I have a feedback form in my website. After submitting the feedback (using Submit button), form's Reference number should generate and showed to the user (with successful message) in a "Pop up" as below:
i.e, your feedback is submitted successfully. Your refrence number is 'xyz10'
This refrence number should be unique for every user who fills the feedback form.
I need to generate 8 digit unique id in c#. On my site a user will register and I need to generate a unique id for him in c# code(I don't want this logic in DB), after inserting the id I need to save it in database.
Edit: I need that numbers to be generated in random manner everytime.
Could anyone please give me some code to generate Check Digit base on LUHN formula. Suppose i pass 15 digit of credit card number then fuction should calculate and generate the Check Digit.I found some link but it is MS SQL function and i tried it work well except if check digit is 0 it will return 1 so i get confused, because some time Check Digit is also 1 so in both cause this function returning 1.http://www.codeproject.com/Tips/120472/SQL-function-to-verify-Check-Digit-of-given-VISA-M.aspxI will appreciate if some one can give me VB code.
Is there a function in .net that will take a number such as 134,501 and convert it to time? That time would be 1:45:01 pm. I was hoping i didn't have to reinvent the wheel for this.
I have a dropdown list which has items bound to it using sql datasource.
In the database i have the numeric values corresponding to each item.
Now there are many such dropdown list's and on selection of each item i want to form a 14 digit numeric code,which i need to use further for some more functionality.
How can i convert a selected item from a dropdownlist to a numeric digit??or how can i bind the items in the dropdownlist to a database having numeric value for each item?
E.g if i select 'WT' from dropdown list the corresponding value for it in the database table is 39 so on form submit i want '39' to be formed in codebehind. likewise on selection of all items from different dropdown list the digit formed using codebehind should be '15487523568955'
How to create 4 digit Sequential Number (0001 to 9999).
I have a web page, where students save their information. When the students submit the page, I want to add the string "Stu" followed by the 4 digit sequence number. The sequence number should be unique. The sequence number should increment to the next sequence, when a new record is getting added.