Renumbering Unique Field In Access Db?
Feb 17, 2012
I have a table in an access db that is viewed via a datagrid view in a vb.net front end.The primary keys for this table are PKJobNo & PKProcessNo I need to allow the user to change the order of the processeses which means changing the PKProcessNo field value and then re-ordering the grid by PKProcessNo In the example below
proc 3 becomes proc 2
proc 4 becomes proc 3
and
proc 2 becomes proc 4
I can't just change for instance process 2 to 4 as these are unique values.
PKJobNo ProcessID PKProcessNo Note
X0001 Drill 1
Drill 8mm
[code]....
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Jun 15, 2011
Possible Duplicate: Retrieve identity value from inserted record's primary key.I have a field with a unique field (that I don't have to update automatically) called ID. I'm using this code to add a field to it:
DB.Snippets.AddSnippetsRow(10, 0, Leaves, Coins, Date.Now, Language, Username, Description)
What I need to be able to do is get the unique field it adds. It +1's to ID every time I add a field there, but how do I get that without hacky database looping?
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Jul 27, 2010
When user inserts a duplicate entry in a unique field, Castle ActiveRecord throws the following exception:
Castle.ActiveRecord.Framework.ActiveRecordException was unhandled
Message="Could not perform Save for SerieNotaFiscal"
Source="Castle.ActiveRecord"
StackTrace:
[Code] .....
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Mar 3, 2010
I have been working on a web based report from an existing client/server apps mssql database. I have a working query, that pulls this information together from many tables, and can provide the query and a result set if necessary.
The results currently are similar to this.
ID | Name1 | Date1 | Veh | PO | Stops
_________________________________________
1 | Bob 1 | 12/1 | Car | 1234 | 4
2 | Sam | 12/3 | Car2 | 2245 | 3
2 | Joe | 12/4 | Van1 | 5568 | 2
[Code]....
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May 3, 2012
I have a stored procedure (I cannot edit) that I am calling via linq.
The stored procedure returns values (more complex but important data below):
Customer Stock Item Date Price Priority Qty
--------------------------------------------------------
CUST1 TAP 01-04-2012 £30 30 1 - 30
CUST1 TAP 05-04-2012 £33 30 1 - 30
CUST1 TAP 01-04-2012 £29 20 31 - 99
CUST1 TAP 01-04-2012 £28 10 1 - 30
I am trying to limit this list to rows which have unique Dates and unique quantities in LINQ. I want to remove items with the HIGHER priority leaving rows with unique dates and qty's.
I have tried several group by's using Max and order by's but have not been able to get a result.
Is there any way to do this via linq?
EDIT:
Managed to convert brad-rem's answer into VB.net.
Syntax below if anyone needs it:
returnlist = (From p In returnlist
Order By p.Qty Ascending, p.Priority
Group By AllGrp = p.Date, p.Qty Into g = Group
Select g.First).ToList
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Apr 15, 2009
I am having major problems with creating my tables and populating them.The problem for the creating seems to lie when I try to create my table named WeeklyUnitStaffRota. I get the run time error 2147467259(80004005) No unique index found for the referenced field of the primary table. This has only started happening as I have been tinkering with my tables to get them to populate properly.I seem to have a problem when I have two columns with the same info but relating to a different college ie two MSC being run at 2 different colleges.[code]...
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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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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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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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Jun 21, 2010
The situation is like this, says:I have textbox1 to textbox20 to show real-time reading, then textbox21 to textbox40 for other purpose. So textbox1-20 can be manage in group through: For index As Integer = 1 To 20 Form1.Controls("Textbox" & index).BackColor = SystemColors.Window Next The problem is, after some time i feel i like to change the order or add/delete few textbox, then i need to change the control name one by one by entering the name by hands(says if i add a text box then its name will be textbox41, then then For loop wont work, Or I deicided to delete the textbox15, forloop wont work either, then i need to rename them manually.)
Question: If there a ways that create a control array in VB 2008 express edition? which can set the name of Textbox1-20 to ButtonGroup then refer to them by says Buttongroup(1) for textbox1? (which means set a group of control in one name)
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Jun 4, 2011
I can save my data to access database and in the access database field I set it to date/time.But problem is when I get the value out from the database.. the format is always month/day/year hour:minutes:seconds example today: 5/2/2011 12:00:00..How to get the value into listview becoming May/2/2011 without the hour..Here's my code to get it from database ListView1.Items(i).SubItems.Add(dt.Rows(i)(14).ToString).The second problem is.When I would like to edit, how can the datetimepicker get the listview value ? [code] info: using access 2003 (.mdb) the Date of Birth field has been set into Date/Time.
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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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Mar 30, 2011
I download a file into access. One field contains one to many numbers always separated by a colon and a space: I have no control over the download. TheNumbers have a 1 to many relationship to a customer. Each number must then be verified against two separate reference files, and if the numbers match the description related to the number will be displayed.I'm just learning visual basic. I've made the changes manually (yuk-this took forever); I've tried various string/conversion commands; I've taken the data and placed it into excel and tried to manipulate it, without success.In this case is always numeric. In another field, similar problem, it's a combination of text and numbers.
Example: Cust# TheNumbers
99 1234; 12345678; 123123; etc...
88 87654321, 345654, 98989898. etc..
The numbers can vary in length and quantity. For each customer each number must be loaded into one field.
Example outcome:
Cust# TheNumber
99 1234
99 12345678
[code]....
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Aug 15, 2011
I am trying to get the Sum values of a Column and want to check if entered value in Textbox is valid. Here is my code below
[Code]...
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Jul 9, 2009
i have a table name product , when i m inserting data into product i need to first check if Product Name already exist in database if yes i want to exit. basically i want to know how to get data from the database and how to access columns in asp.net .
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Jun 2, 2011
How to get access Field name and type in VB.net Listview?
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Jun 1, 2012
I am new in VB.net. I would like to display picture in Attachement fields in Access table ina Window form with VB.net.I created a Window form using Visual Studio ( sorry, I am new in Visual Studio too and set the Access table as the data source.
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Sep 1, 2008
I have a query which I test and work fine in Access[code]...
When I try it, it comes up with an error: "Undefined function 'Nz' in expression.
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Jan 8, 2010
I need to create a field in my database access throught code... I had this code in VB6 to do the job,but i'm a little confused with the way to do this in VS2008.Off course I know the way to open the database,but the way for create the field I don't know!
Dim tdf As TableDef, fld As Field, Top As TableDef
Dim nCtr As Integer
Dim bFound As Boolean
[Code]....
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Mar 22, 2011
I'm using VB2005 and I got a message error in a runtime: Abstract does not belong to table tblBooks. I don't think that the problem is its datatype. I'm currently using MEMO datatype because I need to load it more than the capacity of string. Is it possible to use this code in order to accomplish it? txtAbstractInfo.Text = MyTable.Tables(0).Rows(Counter)("Abstract").ToString
txtAbstractInfo is the name of my textbox and my field's name is Abstract.
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Nov 27, 2011
I have an access database called BKWThermDB1. Within than I have a table called THERMOWELL_DATA. within this table I have a column called QuoteNumber. All I want to do is search that column for an existing number so I can let the user know that this number already exists and to create a different number. I am using the code below which will tell me my Column exists. How can I alter the code to tell me if a certain number exists within that column?
Imports System.Data.OleDb
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code].....
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May 27, 2010
I have an sql table called products, which has a data field called product defined as a text field, how do I assign a VB variable to this data field?[code]...
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Nov 2, 2011
I have a database that I would like to filter characters from anywhere in the field. Example the letter A is typed into textbox1 and in the grid every field that contains an A is show. Like dash, lap, trap, apple. Currently with the query I'm using it will just go from the beginning of the field. I get "Index was outside the bounds of the array". The code is as followed:
Dim filter1() As String
filter1 = TextBox2.Text.Split(" ")
Sheet1BindingSource.Filter = "Stationary_location like '" & filter1(0) & "' Stationary_location like '" & filter1(1) & "'"
VB 2008 using access database.
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Aug 13, 2011
I want to add a blank value to a field in access database with vb 2008 command.
Problem 1: Here is my code, it shows conversion to string not possible errors
Private Sub btnRedThrow_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnRedThrow.Click
Dim dbCnct As New DBUtills
[Code]....
notice the fifth and last value is empty. But it is not being added into the database, how do I do that?
Problem 2: Why does an additional field from my access database disappear even after I manually created the field?? (access database 2003 version, extension is .mdb) I'm using visual studio 2008
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Oct 21, 2011
I need to add a new field to an Access database table, the user has filled the table with data, so I have to add the new field but to preserve the old data.
I have found the ALTER TABLE statement, but it gives me an error (ALTER TABLE is not a valid statement)
I done this in php+mysql with "ALTER TABLE People ADD Address TEXT NULL AFTER Name" (as an example)
How can do this in VB2010?
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Jun 18, 2009
I am looking for some code that will allow me to set field properties of fields in a table I have just created in code using vb.net (2005). I have seen a number of articles to do this in vb6 but not vb.net.
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Mar 5, 2011
Is it possible to check a MS Access database table with existing entries to see if one of the fields is empty.[code]....
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Oct 18, 2010
I am trying to convert my DB field OLE Object as Bitmap into a Picture Box. In my DataBase there are 2 fields
1) Text
2) OLE Object (bitmap)
I am having problems trying to get the MS Access Database to equal the picture box. What I have so far is
Private Sub FindChemical()
Dim intDataBaseIndex As Integer
Dim rowIndex As Integer
Dim FieldRow As DataRow
[Code]....
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May 25, 2009
How can I achieve that? I usually use SQL Query in SQL Server, but it can't work in microsoft access table.
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