Retrieving Records From Access Database Using WCF?
May 18, 2009
I have a problem when trying to retrieve records from my Access database through WCF. In my application the user enters a Customer ID and the function then searches the database and retrieves all records related to that customer. However, it isn't working as it should. The code behind the search button is as follows:
Private Sub SearchButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SearchButton.Click
[Code]...
this code isn't doing as it should. The DataGridView should display the records relating to a customer but nothing is being returned at all, I'm not even getting any error messages. I've been looking at it so long I must be missing something ,
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Jun 18, 2009
when this button is click, it will retrieve all the records in different fields in MS Access 2007 and display onto the RichTextBox. But when i run the code and press the retrieve button, an error occurs. (NullReferenceException was unhandled. Object reference not set to an instance of an object.) Plus im sure my code to display records on richtextbox is wrong as i created another project purely with a button and a richtextbox, only the last field in access is displayed.
Imports System.Data.OleDb
Public Class Form1
Inherits System.Windows.Forms.Form
[code]......
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Jun 12, 2011
I want to use a progressbar to show that I'm retrieving the records from the database so that the user wont be confuse if the program is still running or not. Here's my code.
Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
cs = "Initial Catalog = KRADB; Data Source = .; User id = lab; Password = 'clrscr2010'"
sqlcon = New SqlConnection(cs)
sqlcon.Open()
[code]....
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Nov 19, 2010
can anyone teach me how to save data in microsoft access database and retrieving it back from database?[code]so, how do i save it in that and how do i load their data by typing their ic no only..
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Jun 11, 2011
i am working on a module in vb 10..i have to retrive data from the database between two dates...i have used the following code but not able to get ny output,,nt even an error
Imports System.Data.OleDb
Public Class Form4
Dim con As OleDbConnection
[Code].....
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Jan 28, 2012
rs.Open("select * from CSOptions where OrderNumber = '" & cbstrCurrOrderNumber & "' and OrderLine = " & CBLI, strConn, 2, 2)
If rs.EOF Then
rs.AddNew()
End If
[code]....
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Mar 26, 2012
I'm trying to retrieve record data from an MS-Access database and store it into a variable. i'm using this SQL command to query the database: Dim cmdRead As OleDbCommand = New OleDbCommand("SELECT UserID FROM [User] where Username=?", conn) How do I do it in VB.NET to read data from the UserID column (in the db) and store it into a variable in VB.NET?
What I basically want to do is to retrieve the UserID so that I can then retrieve the Name and Surname of the user from the same table.
Note: I'm using ASP.NET with Web Develop 2003 and an MS-Access 2003 db.
[Code]...
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May 19, 2010
I am trying to build a front end for an access database I created I can connect to the database but when I try to pull data into a data grid view I get no results Here is the code what did I do wrong(I'm also new to vb)
search
Private Sub searchbtn_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles searchbtn.Click
Dim srval As String
Dim type As String
[code]....
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Jul 11, 2011
I've managed to get the following code...
[Code]...
To retrieve a list of Views in my Access database, but now I want to retrieve the results based on a selected View. Is there a correct method in doing this, or do I take the SQL Statement from the DataTable returned for each row?
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Jan 15, 2012
I'm very new to using VB.Net so I found it quite difficult to understand other answers that I searched for.
Basically, I have an project to develop where a user can create an account, and log in with it.
So far I have :
Created a database in ms access with the relevant fields (2003 edition)[code]...
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Jul 21, 2009
I have 3 combo boxes full of data. I have an access database with a table and 3 fields. I am using the following code to insert the data from the combo boces into each field of the database. The program runs and I get no errors but the data is not going into the table.
Dim DrawCount As Integer = 0
Dim DateStr As String = ""
Dim TimeStr As String = ""
[Code].....
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May 15, 2011
I have been trying for a month to get a row added to an Access database and can not do it. I have the databindings all set and can select different records, but can not add a new one. I have tried BindingSource.AddNew.row() but can't figure out how to add data to the new row, nor does it show in the database.
I have tried
Dim ds As New myDataSet '<---Change this to the dataset name on your form
Dim dr As DataRow
dr = ds.Tables("Students").NewRow
[Code].....
But that doesn't do anything at all. No data added, no errors. I have tried updating a datagrid to be told it can't be updated when bound. I look on google and nothing seems to relate to adding data to an access database when bound to the project through the datasource wizard.
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May 6, 2009
I am using OLEDBConnection and OLEDBDataAdapter and connected to the MS-Access databasehow can i add the textbox value to the table in database on a button click and want to display it in datagridview??
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Feb 17, 2008
I'm creating an application that adds and deletes records from a microsoft access database. The language I'm using is VB2008. I am importing the database through a wizard. I can add records and delete records, but I cannot delete a newly added record without closing the form first. When i reopen the form, I can delete the record. Here is how I have my database setup:
'Bind user info to the controls.
AUSERDataSet = New BulldogUsersDataSet
AUSERTableAdapter = New BulldogUsersDataSetTableAdapters.UsersTableAdapter
AUSERTableAdapter.Fill(AUSERDataSet.Users)
' Setup the binding source.
AUSERBindingSource = New BindingSource
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Dec 21, 2009
how to do it, but the tutorial is not applicable on the program that I wish to do. The tutorial tells you to add 4 navigation buttons so that you can navigate the database(first, last, back, and forward). Then an update and delete button. But if this is what I will do, it would take 10 years to navigate the database and update a record. Now, what I want to do is just for the user to input a unique ID and click search button(which I have already done). Then the update would be easier. How can I update or delete a record using this method?
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Mar 17, 2009
how can I delete a records in access dataabse except for sql query my code is this I would like to know if this code is wrong or not
Private Sub BindingNavigatorDeleteItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BindingNavigatorDeleteItem.Click
[Code]...
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May 13, 2012
I am trying to insert records in an Access database using VB.NET 2008 using the following code:[code]I get this error Syntax error (Missing operator) in query expression when I try to insert any record that has apostrophes in the name.I have tried everything I can think of to get these types of names intserted into the database with no luck.
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Mar 26, 2010
I have two MS Access databases (with identical table structures), and I'd like to use a SQL statement (programmatically in VB.NET) to copy records from one to the other. Both databases are locally stored, in the same directory (and this will always be the case). Suggestions?
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Sep 28, 2009
how to update records on an existing access database using vb.net with just a textbox and a command button and how a specific record of a field can show up in a label or a textbox
i connected vb.net to my access database by just clicking on "add new data source">>"new connection">>"microsoft access database file" and just continue..tested connection and done.
you can see in the screenshot of my form, by default the left side textboxes are disabled but they're enabled if the user checks the checkboxes and disabled again if unchecked.
assuming that the textbox is already enabled and i want to enter a value in the Brewed Coffee area of the form...for example 5. when i click on my Submit button the value of that particular record in the database will be updated, so in my table the value of the quantity field in Brewed Coffee will be 5.
another thing is that how can i see a particular value on a label or textbox from my database like on the Prices area. in my database if a product's price is 80 then it should show a 80 in the label. the values of the prices from the screesnshot of the form are not the ones on the database xD i just typed them in.
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Jul 6, 2010
My program runs with no errors, but the actual .accdb file does not reflect changes when I make them in the running program. Also when I fill in the text boxes and click the "Add New Item" Button, the "ID" text box displays a -1. "ID" is the primary key in my Access Database.
Imports System.Data.OleDb
Public Class addMemberForm
Inherits System.Windows.Forms.Form
[code].....
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Jun 18, 2012
how to save records in listview into ms access database table using a button, i've tried with my codes but nothing is saved in the database `Inline Code Example Here`
private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Dim con As New OleDbConnection
[Code].....
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Mar 6, 2011
First one is how to update database records without using me.validate[code]...
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Apr 27, 2011
I have a form with textbox controls that are bound to the database. I have a bindingnavigator within the form, when i use the save & delete buttons on the bindingnavigator toolbar they seem to work but when i check my db nothing has changed. I have tried to work around this problem by updating the saveitem code using the code below.[code]
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Oct 26, 2009
When i tried with the code discussed in this forum i am able to add records but not modify any particular existing record.
[Code].....
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Aug 27, 2008
I am a Visual Basic Programmer and presently migrating our applications to Vb.netQuestion : I need to access the records from a MS Access database to the Text box or for some user login validation using vb.netso i coded to give a message box if any row is returned by the connection.but its not all selecting any rows even though i queried as "Select * from <Table Name>"also i am unable to debug it.....I am attaching th code snippet used along with this mail.plz revert back if there is a solution.[code...]
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Nov 3, 2008
How do I insert,update,and delete records in vb.net 2008 from a Access 2007 database?Really, I figured out how to add records - but I cannot delete or update records. Any pointers, website tutorials, etc?Also, I am binding the database table to Listbox which is working, but I need to update the listbox with deletion and update changes too...
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Apr 6, 2010
I used the wizard to create a datagridview and then binded a grid to an access table.Data show up fine..But I can't dete records via the bindingnavigator.Hit the delete button then hit the save button ?Data does not get updated in the backend database.My properties are set to true for adding and deleting.
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Oct 31, 2011
I need to display records from a database in Access in Visual Studio 2010. The project Im looking to create needs to display all of the records from the database and allow the user to navigate throughout the set of records.
I need controls and codes to:
MoveNext
MovePrevious
FirstRecord
LastRecord
Exit
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Apr 11, 2011
I've found a sql string like: "SELECT Count(*) FROM table"My question is: how can I use this string and get the result into a variable in VB2010? I used to program with VB6 for years, but now things are very different.
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Jun 30, 2011
I am trying to search for the occurence of a string within MS Access database with 1000000 records using VB.Net. The program does not respond once it is run or it is taking a very long time. However, if I reduce the size of the database the program runs.[code]...
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