Asp.net - LINQ To Objects Auto-increment Number?

Feb 25, 2009

This feels like a completely basic question, but, for the life of me, I can't seem to work out an elegant solution.

Basically, I am doing a LINQ query creating a new object from the query. In the new object, I want to generate a auto-incremented number to allow me to keep a selection order for later use (named Iter in my example).

Here is my current solution that does what I need:

Dim query2 = From x As DictionaryEntry In MasterCalendarInstance _
Order By x.Key _
Select New With {.CalendarId = x.Key, .Iter = 0}

[Code]....

Is there a way to do this within the context of the LINQ query (so that I don't have to loop the collection after the query)?

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Apr 27, 2012

I want to create auto increment number in vb.net like : -

01, 02, 03, 04 etc.. so it is in order.

I am using VB NET 2008 EXPRESS connection OleDb to MS access

I want to do the auto increment for my textbox MemberID

I have tried multiple ways and had no luck such as : -

If txtMemberID.Text = "" Then
txtMemberID.Text = 1
Else

[Code]....

I want to write the code not use the autonumber in Access as my lecturer does not want me to do it this way

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I've been using some recommended code from successfully for a couple of years now to auto-increment the build number in my project.

[URL]

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Jan 31, 2009

I created a listbox using VB.NET. When the user select an item (it is a string format) in the listbox and click on a button, there will be a number beside the string and the number will increment which time the button is clicked. Anyone know how to do it...?Below is the coding I'd done, but I don't know how to do the increment part. Anyone know what coding I need to add?

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I have constructed my database and I have used auto increment the ID's of each column. When I was testing and inserting data into my tables the auto increment of these column's of course incremented.

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I know it has something to do with using max value and +1. I have deleted the entire table and have tried everything to re-insert my data and start the ID's at 1, but I have had no luck.

Also to,

I know within Vb I can use a datagrid view and add there and it starts at the max value of the column +1, but when I have another form to add data within columns the column number is not in numerical order, How do include code within that seperate form to auto increment ID column numerically?

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Private Sub Item_TypeComboBox_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Item_TypeComboBox.SelectedIndexChanged
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[code].....

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Oct 17, 2011

I am connected to a SQL Server Compact Edition Database. One of the tables involved has 3 columns - CompanyID, CompanyName and CompanyNotes. I have created a form in Visual Basic to add a new company to the database, and of course I don't want the user to have to manually put in the company ID.

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The very basic code I currently use for adding a new company:

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[Code]....

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Jul 18, 2012

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hereis the code
Dim Separ As String() = fullString.Split("-")
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[code].....

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Mar 14, 2010

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NTAA001
NTAA002
....
....

[code]....

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vb.net
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[code]....

There is some problem with the code. Should i try the padleft or the "D2" ?

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[Code]....

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[Code]....

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'i put this on formload (order page)
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[Code]....

also i would like to know THE CODE TO GET THE LAST NUMBER added to orderID field in order table.

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Nov 4, 2011

I have a form and some controls as dropdown and textboxes..

The situation is that when the form loads, i want the value in textbox to be incremented, everytime it loads..

This is something i tried.. I get the value '1' everytime !! It shows no sign of increment..

However, i also want it in the format 0001,0002 if possible..I tried something like this..

Private Sub Order_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
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[Code].....

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