I used this code to assign the primarykey from my MS Access database to my DataSet in my project:
Dim col(1) As DataColumn
col(0) = ds.Tables("Filmer").Columns(0)
ds.Tables("Filmer").PrimaryKey = col
[code].....
I created a access table with three fields, CustomerID, FirstName, LastNameI set the CustomerID field to the primary key and the type of AutonumberIn my VB app I dragged the three fields over to my form.I clicked on the plus sign at the top and it displayed -1 in the customer field, I entered a First Name and a Last Name and press the save button. I repeated the process 2 more times and the CustomerID field went from -2 to -3.I looked at my table in acces and all three records showed 1, 2 & 3 as it should. When I exited the form and then open the form again it shows record numbers 1, 2 & 3 as it should.How come it takes exiting the form and then back in to see the correct CustomerID's ?
View 4 RepliesI am having Syntax Error problem with the Insert and Update statement on using VB and Access that is having an AutoNumber that works also as Primary Key, the below is my code for it. I can do the insert if there is no Auto Number but if it does have, my code is not working. For my delete, when i RUN the below code, it wipes out all my my data inside my
Update
Dim strsql2
As String = ("update visa_block set(@utilized, @balance) where @id")
[code].....
orking with vb 2010 and ms access as data base, just newbie.im trying to save the loged out date and time to my access table by selecting from tblloghist wherein my column SystemUserID is equal to my textbox SysID(located at my form) then it will save the timelogedout by getting the value of lbltime from my form. the problem is the data type property of my column SystemUserId is in autonumber so i got error saying "Data type mismatch in criteria expression"
Dim con As New OleDbConnection
con.ConnectionString = "Provider=microsoft.jet.oledb.4.0; data source =..systemsdb.mdb"
Dim ds As New DataSet
[code].....
I am using Visual Studio 2005 (Visual Basic) and MS Access 2003 I am trying to build an application in the lines of the book "Doing Objects in Visual Basic 2005" by Deborah Kurata. So, I have a Data Access Layer (DAL) Class Library that is separated from the business logic layer (business objects) Class Library. I try to add a new business object such as a "Customer" to the Access Database, where the "Customer" table has a PrimaryKey "CustomerID" which is an AutoNumber field. I am successful in writing the values to the database, but I can't figure out how to know the "CustomerID" of a newly added "Customer" so I can populate the business object with the respective values.
View 4 RepliesI have a master DataTable that may contain some DataRow.RowError. I create multiple subset DataTables from my master DataTable using the DataView.ToTable method whenever the user wants to apply a filter or sort to the master table. However, the ToTable method does not transfer the RowError property of the data rows in the master table to my new subset table. So in order for me to transfer the row errors from my master table to my subset table I have to use a loop. The code below works fine, but with one exception (see below code).
Dim dtMaster As DataTable = Me.ds.Tables("Current")
Dim dtSubset As DataTable
Dim dv As DataView
[Code]....
Note, the primary key may contain 2 columns, however this is a rear case. If you know of any other solutions to transfer row errors let me know. I don't have to use the Find method.
I have a procedure that is building a PrimaryKey based on values input from a CSV File. There are 4 fields that make up this PK. My code is below.
[code]...
For some reason when it takes the "IF" branch, it gives me the "Violation of PrimaryKey" Error. When I debug the 4 key values, the record does exist in the DB Table. Not sure why it's taking this path. I think I'm not testing the "row" object correctly.
I am trying to filter a dataset using a number different inputs, selected by a number of check boxes. I have all the text base rowfilters working, but I can not make the date filter work unless I hard code the datetime into the code. The database is MS Access and I am using VB2008 to show the data. I would like to be able to use a DateTimePicker to set the filter date (without the time part) Also I would need to remove the time section of the datEnterDate. I cannot change the structure of the database fields. Also the datEnterDate is MM/dd/yyyy, because I'm in England I would like to use the format of dd/MM/yyyy if possible
[Code]...
in my VB.Net application I've created a Dataset that call an existing MS SQL Server stored procedure but after the wizard close no columns where added... how can I add all the columns returned by the stored procedure without adding them manually (off course the stored procedure might change in the future) in which case manually will not work.
View 1 RepliesI have a form that has 1 text box and has 2 queries that locate the data. One is by customer ID and the other is by customer last name. They both work but when the code works and the user enters a customer ID and the query locates it then enters a customer last name it also locates it. If the user enters the same customer id again the query seems to fail. This is why I'm sure I need to add some kind of code to reset the Dataset.
Here's the code in the load sub procedure:
EditBoxSearch.Focus()
' Start out clean.
[code].....
i am getting the xml using readxml method. And then display the data in datagrid. But number type columns comes as string type in the dataset. So when datagrid displays , sortingdatagrid columns is not correct. For example it sorts like this:
Salary
1180
12133
[code]......
i'm importing a text file into a access table like this:
vb.net
sql.CommandText = "SELECT * INTO [tblMailList] FROM [Text;DATABASE=" & frmMain.FolderName & ";HDR=NO].[" & frmMain.TextBoxFileName.Text & "]"
sql.ExecuteNonQuery()
my question is what is the best way to add an autonumber to the table? i currently do it like this:
vb.net
sql.CommandText = "ALTER TABLE [tblMailList] ADD COLUMN [ID] AUTOINCREMENT;"
sql.ExecuteNonQuery()
but when the file is too large i get this error: "File sharing lock count exceeded. Increase MaxLocksPerFile registry entry."
and yes, i have tried to change the registry entry and it didn't work:
vb.net
My.Computer.Registry.SetValue("HKEY_LOCAL_MACHINESOFTWAREMicrosoftJet4.0EnginesJet 4.0", "MaxLocksPerFile", "9000000")
How can i auto generate number in vb.net
View 4 RepliesI had the following code :
Dim row As Integer = 0
For row = 0 To pdgvDataGridView.RowCount - 1
pdgvDataGridView.Rows(row).Cells(0).Value = row + 1
Next
it's to add auto number into first column of each row. The codes running well, but after the codes completed, the first column of each row remain empty.
I am using ADO.NET Datasets in my VB Applications. I have a typed dataset with one Parent table and many child tables. I want to generate Identity Key when I insert data into Parent Table and then update the data in all child tables with the Same key (As Foregin key).At last, I want to update the dataset in Database(SQL Server08).Well, the above thing can be possible by first inserting Parent Table in Database directly, get the Identity column and than use to for Child tables.
View 4 RepliesI'm using ODBC to export tables from a dataset to an Excel file without auto-formatting Excel or even needing to have Excel installed on the users PC. This works great but I just had a request to autosize the columns and make the header line bold. The only way I know of doing this is to fully automate Excel to control the row/column/cell formatting. Does anyone know a way of doing this without auto-formatting Excel?
View 2 RepliesI have 4 Columns in a ListView. The first one is called Serial No. Every time I populate it, the serial number increases automatically. After populating the ListView couple of times, I select any row(s) and remove it. When I remove one or more row(s) from the listview, serial numbers stays same. I want the serial numbers to be fixed automatically when I remove any number of row(s). How can I do that ??? Here is my code -
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim Str(4) As String
Dim newItm As ListViewItem[code]....
Probably a simple question for most of you. I'm putting members of a group into a SQL Database so we can better manage attendance and 'points' that they earn for doing work. I've written the program in VB and have the SQL server running fine. However, I have created a separate table to handle the points and have marked the relationship between the table - the column is named 'PointID', and should be unique for each person. When I add a new user to the database, I want it to automatically assign a value to that without me having to do anything extra beyond pressing save. From this PointID, it should identify the user and it will bring up the person's points.
View 12 RepliesHow to display the auto generate next number from sql server 2005 to vb.net 2005 textbox. This code below is not displaying any data in the textbox after retrieving the data from the database.
Code:
Imports System.Data.SqlClient
Public Class NewConnection
[code].....
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
I am building an application in VB that will use a JetDB backend (Access 2007 db). I am trying to figure out how to capture the autonumber PK from the database when I add a new row to the table so that I can then load that value into a variable. I am currently using the IDE tools for my database queries (dataset designer), so if this is not something that can be done through that, I would need to know how to code my database query.
Here is what I have:
Table (mainTable):
ID (autonumber PK)
[code].....
I have created a field which automatically in sql server.I want a code in vb.net so that user the text on the get focus, the automber would display the current no on the form.This autonumber is primary key in table1(tran_head) and as foreign key in table2(trans_Detail).I want another so that when the data is saved, it would automatially update the second table with current automber displayed.
View 10 RepliesI have a windows form having combobox and textbox controls.. I have to generate a part number, consisting of combobox and textbox values included.. I can explain in detail.. This is the code i have used to define a variable "type"..
[Code]...
I had the following code :
Dim row As Integer = 0 For row = 0 To pdgvDataGridView.RowCount - 1 pdgvDataGridView.Rows(row).Cells(0).Value = row + 1Next
it's to add auto number into first column of each row. The codes running well, but after the codes completed, the first column of each row remain empty.
im working with my thesis, to generate auto increment number. for example,when the form load for the first time it will appear transaction 1, and then next time i'll load the form it will be transaction 2, so on and so forth. i am using a VB.net and SQL server.
View 1 RepliesI am trying to generate autonumber the sequence is like this. From left to right, last two digit from Year, Month in numeric and the last three digit number be from 001 to 999. I tried with the below coding but the sequence is not coming correctly.
<code>
Imports System.IO
Imports System.Data.OleDb
[Code].....
i want to auto account generate account no in their name format for eg if the account name is ABC Travels account no will be A0005 if account name is XYZ Travels account no will be X0003 etc for this i want to know 2 things.first of all how to get 1st alphabet from a textbox for eg. textbox.text is QWERY so how to Q from it.Secondly from database data how to seperate Number from word. for eg if last account no is A0009 Now how to seperate 0009 or how to add +1 in A0009?
View 4 RepliesHow to autogenerate number in a texbox. in Visual Basic .NET 2005 and Using OLEDB I hv created 1 application in which there is one field in the database called "treatment ID"... and now i want to Autogenerate an ID in Incrementing Manner.
View 1 Repliesi do have a table with 3 cols, 2 of those will visible for users to enter data, the last one is needed to get inserted as the next number of the previous number.
i use the following query for insert command ,
INSERT INTO [Headers]
(GrpId, GrpName, Number)
Select (Select Case when Max(GrpId) = Null then 1 else Max(GrpId)+ 1 end from [Headers]),
[Code]....
can i make an auto-number with out using database?
View 3 Replies