Create A Fixed-length Unique String From Another Unique Numerical Value That Is Too Long?
Feb 13, 2012
I am using VB .Net to access the eBay API and store all completed orders in a database. This database is then fed into a proprietary shipping system, which can not handle an order number larger than 20 characters. eBay returns an order number like so 230407279314-680141236013 which is too long. The order number is always 12 numbers a hyphen and 12 more numbers. What I need to do, is turn this (the result can be alpha numerical) into a shorter, unique order key to store in my database alongside the true orderId (so that this can be referenced by the shipping software instead of the actual order number). The reason for the 20 character limit is the barcode algorithm used. Is there any way to achieve this in VB .Net 2010? This number can be anything unique, so long as it does not exist already (even a good uniqueid function would work, but I would have to query the database to make sure it isn't taken)
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Jun 17, 2010
I don't know if I can do this here...but here goes. I want to generate a unique ID of fixed length The trouble is, the code example I found on the web is in C# (or C maybe) which I know nothing about. I tried a web-based C# to VB.net converter but the result doesn't work so its hard to understand what's going on (especially since I have not worked with bytes either this makes it more difficult).
[Code]...
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Jan 10, 2009
I'm using the datagridview. This is the sample data:
[Code]....
How do I parse through the grid to rename the duplicate values in a particular column (in this example it's the l_name field) into such a format?
[Code]....
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Jan 7, 2011
In my VB project I need to create a unique string of alphanumeric characters 4 in length from a numeric string 8 in length.This numeric string will always be 8 in length and could range from 00000001 through to 99999999
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Mar 21, 2011
How generate the unique no. 1,2,3 and so on .... on button click of each new user ..
the code mentioned below is a readwrite coding in vb.net ...
but the problem is it generate the same id for different users on button click event... but i want the no. of times button clicked the new ids will be generated
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim FILE_NAME As String = Server.MapPath("counts.vbi")
[Code].....
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May 8, 2011
Unique constraint - these columns currently doesn't have unique values..?? I have created Unique Constraint with 3 columns. My code works perfectly but once - two users @ same time entered same data and somehow it saved in DB; after that incident. This UniqueConstraint gives me error - These columns currently doesn't have unique values. How can I check if user enters this kind of entry or how can I restrict the Entry?
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Jan 6, 2012
This my working method to send a email
Sub emailConfirm()
Dim email As String = txtMail.Text
Dim name As String = txtPrenom.Text + txtNom.Text[code]....
note:I want to send Link contains a unique identifier and verify the unique identifier in the login.aspx.I don't know when to do this...I found nothing interesting on the net ...
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Dec 28, 2011
i need to create a Unique hardware ID So I wrote this code with vb.net 2010 ( and .net framework 2)But when I run this Code in two different user on a computer (windows seven) , Two different output returns?
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May 17, 2012
I am having some problems declaring a fixed lenght string in vb.net. I am studying code for using webcam in vb.net, although the code is from vb6 but I am told it works in dot net. Everyting else seems to be working except this line[url]...
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May 19, 2010
How to create a non-unique index in sqlite?I'm using vb.net to create the tables.
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Apr 16, 2010
I want to add only unique items into the list box.I am using lstListBox.FindStringExact(strKey) it works perfectly. But I have large number of strings and it is taking too much time. It also make the CPU uses 100%.
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Dec 2, 2011
I have a requirement to create multiple fixed length files so that I can use the files for testing in another application. The following code causes an error when run.
[Code]...
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Feb 21, 2010
How do i Declare a string like this:
Dim strBuff As String * 256
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Jun 21, 2010
In my application, a string generated its length can varying from 1 to 100 (not using random number algo). But I want if length is less than 7 than need to add integers 1,2,3.. untill its size reach to 7. I implements it using while loop as :
If generatedUserName.Length < 7 Then
Dim count As Int32 = 0
While generatedUserName.Length < 7
[Code].....
Is any other better way such as enbuild function Tostring() with some parameter?
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Sep 11, 2011
I have a long string like this
dim LongString as String = "123abc456def789ghi"
And I want to split it into a string array. Each element of the array should be in 3 characters length[code]...
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Apr 16, 2012
What I need is to be able to put in a SortedList a combination of two fields that are non-unique, but the pair is (like database composite keys).More precisly, i have my list, and i want to be able to do this with it
Dim myList = New Generic.SortedList(Of String, String)
myList.add("aaa","aaa")
myList.add("aaa","bbb")
[code].....
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Aug 7, 2011
I am trying to create an array of 5 random unique numbers between 1 and 30. I've been trying for a while and have had no luck.
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Jul 8, 2009
For my database I need to create unique numbers and insert them in the column "ID". Can I add them via a SQL query? The numbers would simply be 0001 to whatever.I'm using the "Show Table Data" gui.
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Nov 2, 2011
I want to generate random datasets with regex.
Therefore I have an expression like [a-z]{10}.I want to generate maybe 200.000 data - maybe more (it should be generic), every data should be unique.
How can i implement that?at the moment i have a algorithm, that generates a random string, then search in an array that stores the values, if the string is already in there it repeats that process. Otherwise it stores the string in the array.
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May 2, 2012
I have a datatable and I want to create a text file using this datatable. I want that each row of the newly created text file is unique. If there is a duplicate row, then it should add * to both rows ( duplicate rows)
I am using following code:
Dim str As String
For Each row As DataRow In dataTable.Rows
str += row(1) ' This is text data
[Code]...
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May 4, 2010
My goal is to make the string ...
vb
strLocations = "WI - WI IL"
to
[code]....
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Jan 21, 2010
Got a dll from a supplier that I need to call. His declaration is Declaration with Microsoft Visual Basic: [code]Now, the Sting * 20 is clearly not VB.NET, and sure enough it crashes when run - "Attempt to read or write in protected memory" and that leads me to think that there is something with that string definition - or possibly the I_Ref definition which hasn't been defined as fixed length.I've tried <VBFixedString(20)> when defining O_Err, but I have a feeling that it might not be enough when the function declaration is like that (not specifically fixed length). I cannot figure out how to specify this correctly.As a small hmmmm, the above is pasted directly from the suppliers documentation, but that't will never work, as there is a "," missing after I_Range as long... Clearly not something he has pasted from a working program.
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Jun 18, 2009
I need to generate a globally unique ID of fixed 16-lengthThe GUID is too long for my purpose. So I wonder is there any way to convert it to a 16-length?If this is not possible, I have a program key of 8 chars, and is thinking of using the DateTime as my key.
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Mar 17, 2012
I am trying to populate an array with all the unique values in a string, to prevent me ReDim'ing an array every time I find a value that not already contained in the array I am trying to create (consumes alot of time), I am trying to get the unique values first so I only have to ReDim once and after that I can simply iterate through the string and the array I have will be the correct size for the unique values I aquire (I am using this...)
[Code]...
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Mar 8, 2012
How can I create a list (of my custom structure) to hold only unique items? This list should be created from another list.[code]...
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May 22, 2011
Basically i have a list(of TransRecord)
vb Public Class TransRecord
Public TableName As String
Public PKs As String
[CODE]...
And want to create a linq filter to select only unique records for TableName + PKs (group by) ... but want it to select only the record with the highest ID for this group by.
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Dec 18, 2009
I am going to have a series of numbers, I want to count how many times each unique number exists in the results.For example if I have this string" "1, 2, 3, 5, 3, 7, 1" I want to know the number 1 appears 2 times, the number 2 appears 1 time, the number 3 appears 2 times, the number 5 appears 1 time, and the number 7 appears 1 time.I want to load this up into a datagrid each unique number will be stored in a column named acct the number of times the number appeared in the string will be stored in a column named numref?
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Feb 27, 2009
ASPX:
<a
href="ShowImageVB.aspx?id=<%# Eval("ProdID") %>">
<asp:Image
runat="server"
ID="ImageThumbnail"
AlternateText="Click here to open the real size image"
ImageUrl='<%# "ShowImageVB.aspx?thumbnail=true&ID="& Eval("ProdID").toString%>'
Style="border-width:
0px;"
/>
</a>
Code Behind:
Dim data As DataView = SqlDataSource1.[Select](New DataSourceSelectArguments())
The above code does not seems to work when I change my ProductID to UniqueIdentifier Datatype. This is the error I have ""Input string was not in a correct format."
But when change the ProductID to Int datatype is working fine.
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Jun 26, 2009
I'm pulling records from a db table (sybase) where I have run into a problem with a long varchar field. Using the OLEdb class I convert the field into a string variable which works fine in most cases, but there are problem with a few records. Examining the field in the database it shows that the value is not null, but the length of the field is 0.(SELECT field, length(field) FROM table). When I try to convert this into a string the result is rubbish.strContent = objReader.Item(i). I can't figure out what's the problem here, so I have avoided the issue by doing a table update before I start the process of getting data (I set the field value to null if field.length = 0
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Jul 22, 2010
I am checking for empty string values, but how do i see for the Quantity text box if the user chose only numerical values after the empty string. For example...
[Code]...
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