How To Access A Record Near The End Or Middle
Jul 11, 2010
I have 2 tables in my database (SITES and RECORDERS) SITES has only 2 fields (SiteID and SiteName)
RECORDERS has SiteID as a foreign key.
The primary key of RECORDERS is two fields, SiteID and RecorderID .I don't want to use a DataGridView for editing. I like the Details view and have dragged the fields to my form (using the Data Wizard). It adds the BindingNavigator to the top of the form and I'm able to go through each record of the RECORDERS table successfully.
What I am wanting to do is somehow select (through a ComboBox or ListBox)a SiteID and RecorderID (which will return one row) and have it load those fields in the controls just like it does with the BindingNavigator.I want to maintain bound controls to make the Addition and Deletion of records easier.
The reason for this is navigating with the BindingNavigator one at a time is quite cumbersome if I need to access a record near the end or middle.
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Apr 15, 2012
I have a access database with these columns. USER_ID,COUNT,TIMES
Let say the current record is this:
USER_ID,COUNT,TIMES
STEVE20,24,1.5
Now I want to updated the current count record and times, but before updating I want the old record to be added to the new record. What should be my query?
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Apr 18, 2009
I hav a web service which pull records from a database and I am hosting these services in IIS which works fine but I am trying to retrieve the record and display the record in a listbox displaying the time field as the text for that record.I have created the following function
public sub get_data()
dim dt as new data.dataTable
dim service as ws webservice.webservice
[code]...
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May 26, 2010
I had my students connect to a MS Access DB (2002) and used the datagrid to display the data and that works just fine. Theproperties are set to allow adding of records, however when we add a record it seems to accept the record, but if you check the table its not there./ No error or any indication there is a problem, the record is simply not there. You can add 10 to the datagrid and they will appear in the data grid but not in the table an of course if you closethe app & reopen it the records are gone. This used to work just fine, by the way the same thing happens when you use the Binding Navigator so I don't think its VB, I'm guseeing its Access?
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Jan 5, 2010
I have an Access 2007 DB With 3 Tables I fill a form with information from 2 of the tables which works fine I then want to add a row to the third table with the information obtained from the form.(I know this may seem like duplicating data but there is a reason for doing this that I can explain if needed) This is where I am having the problem. I have tried several approaches with no success.The following code works fine I get no errors and it even says it added a new record but it does not. when I look at my access table there are no changes.Why can I get info from the DB but not Write back(yes I have the properties set to "update if newer"[code]...
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Nov 16, 2009
Hi, as part of a computing project I am writing a program to add, edit and delete data from an access database.
I have successfully written code to edit data but when adding a row to the dataset I run into a problem.
This is the code in my button which adds a new record.
Dim cb As New OleDb.OleDbCommandBuilder(da)
Dim NewRow As DataRow
NewRow = ds.Tables("CandidateID").NewRow
[Code]....
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Jul 21, 2010
I'm looking for a simple code to get a specific record from an access table or query.say the table is called "tblPriceList" and there are field called "product", "color", "size" and "price". I want to get the price when I know the value of the other 3 fields and assign it to a value "x"say product = "Clip", color ="Red", size ="large" orsay product = 1 color = 2 and size = 3What is the syntax for the method?
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Feb 5, 2012
Im having problems getting data out of the databse and checking a checkbox if the records are there. I have two Records in my access database:
IDItemIDLocationIDInStock
1544MainWarehouse900
2544NewLocation100
3544StrongRoom200
WHat i have done is Create a SQL string that takes the ID 544 and searches through database. If a match is found the the same as the LOCATION name on another Table then it takes the LOCATIONID (it will be the ID, but not at the moment) and puts it into a listview along with its IN STOCK.THe location Table looks like so:
IDLocationName
3MainWarehouse
4StrongRoom
[code]....
Running through this code. The system checks the "NewLocation" checkbox ONLY!
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Jun 22, 2010
this is my code to display records from my ms-access database whenever i click the button next. But the code is only displaying the last record in the database. I have tried using for loop but it is giving me error.
[Code]...
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Jan 3, 2009
I want to record from a text box into data veiw grid
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Oct 21, 2011
update record in my mdb this is my code but it updates only 2 fields yet I have five so update the rest
[Code]...
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Oct 6, 2010
Code to insert and update the record. I read the record sucessfully but without exception applied. I want also use the try catch statement for catch exception if generate. I want to know only sql query with in the try catch or datset connection adapter all in the try catch.
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Sep 26, 2011
Any way that I can set the value of a particular field (let's say a name) on a particular record without having to have the data presented on the forum? Syntax would be along the lines of "Go record "12" and set "Callum Kerr" on field #name"?
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Nov 9, 2010
first of all here is the code that populates the fields when the user logs in. This code is correct and works fine.
Dim passwordrow() As Data.DataRow
passwordrow = MyDBDataSet.Tables("Customer").Select("Username = '" & txtusername.Text & "'")
'This try statement checks to see if a row has successfully been found
[Code].....
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Aug 4, 2011
Add new row to Access 2007 DB.I am trying to add a new row to a access db. I receive the error update requires a valid insertcommand.when passed datarow collection with new rows when Cmd.update(my_table).[code]
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Apr 16, 2009
I'm at another wall in my project. I've been trying to get it to add a new record to a table but I got a message that said "Object reference not set to an instance of an object" but I have no clue where the error is popping up. I am also unsure of whether the coding for adding a record will actually work on not.Here is the code for the form with the bits subs that I'm sure aren't the problem removed (as they have no relevance to adding a record);
Imports System
Imports System.Data
Imports System.Data.OleDb
Public Class NewStock
[code].....
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Apr 18, 2012
Basically, what I want to do is to use a form in VB 2010 to add a new record to my database in Access 2010.
Imports System.Data.OleDb
Public Class frmNewStudent
Dim con As New OleDbConnection
[code]....
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Jun 10, 2009
We're trying to work out some code for saving from a textbox to a database field without using DataGridViiew. We have it working using the automated controls that Visual Studio gives us, but if we have a form with text boxes, can we make it so that, on a button click, it dumps that stuff into a field in a table?
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Mar 26, 2011
I am having no issues reading from an Access database, just when I am trying to add a record to the database I am getting no results. I am using a 64bit computer, and am aware about running in the x86 solution platform. I am getting the result that it hassuccessfully added. But nothing is showing up in Access
Private Sub voteBtn_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles voteBtn.Click
Dim decision As String
[code]....
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Mar 31, 2009
read a lot about DataAdapter, DataTable ,.. to reach to this code, in the Save Button:
'insert new row
ds.Tables("Employees").Rows.Add(ENumTxt.Text, ENameTxt.Text, EPosTxt.Text,
EAgeTxt.Text, ESalTxt.Text, EPhonTxt.Text, EAdrsTxt.Text)
'save changes
ds.AcceptChanges()
[Code]...
In run time, i got the same error message for both cases "Syntax error in INSERT INTO statement"
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Oct 3, 2009
Imports System.Data
Imports System.Data.OleDb
Public Class frmRegistration
[code].....
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Aug 7, 2011
I'm getting an error doing this. Here is my
Private Sub btnSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSave.Click
Dim con As New OleDb.OleDbConnection
Dim dbProvider As String
Dim dbSource As String
Dim dsgames As New DataSet
[Code] .....
The error appears on the very final line, "dagames.Update(dsgames, "games").
This is the error: "Operation must use an updateable query."
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Jun 30, 2009
im trying to add data to an ms access table that I have created elsewhere in the app. The code I am using is below but I keep getting an error message (Update requires a valid InsertCommand when passed DataRow collection with new rows.)
con.Open()
sql = "SELECT * FROM attachment"
da = New OleDb.OleDbDataAdapter(sql, con)
da.Fill(ds, "Attachment")
[code]....
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Aug 15, 2011
Im using Microsoft Visual Studio 2010
Microsoft Acess 2010
This is for practice
Lets See First off i was able to get to insert records(Code Below)Now im trying to get the program to prompt a message when the id or field exists on the key down event and not enter it if it exists and if it doesnt exist im guessing i could use my already existing code to insert it[code].............
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Apr 1, 2009
I just want to add a value from a textbox/variable and save it as a new record in a MS Access Database after a button click.
I've set up the database, set up the tables required.
From what I gather, I need to first link declare 'Imports System.Data' outside all the code. And also define a variable as a connection (Dim con As New OleDb.OleDbConnection) then access the database with "con.ConnectionString = "PROVIDER=Microsoft.Jet.OLEDB.4.0;Data Source = PathName").
What else do I need to include?
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Oct 21, 2011
I am trying to delete a record by entering the "party code". I tried with the below coding but it is showing the error as " ExecuteNonQuery: Connection property has not been initialized.[code]...
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Jun 12, 2009
basically, i have one delete form, where i will load the firstname from a table in access(hardcode) to listbox.then when a user choose the first name, from list box and click delete.the entire row related to the first name should be delete.
The code, i wrote so far..
Imports System.Data
Imports System.Data.OleDb
Public Class Delete
Dim inc, MaxRows As Integer
[code]....
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Mar 15, 2012
I have this problem : Dynamic SQL generation for the DeleteCommand is not supported against a SelectCommand that does not return any key column information.... the button used to delete record in my project is button6 at the end of the code
My code :
Public Class Form1
Dim con As New OleDb.OleDbConnection
[CODE]....................
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Mar 28, 2009
Edit a record and write the changes back to the Access database.Also,Remove a record from a Access database.
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Sep 7, 2009
i want to create login form in VB.NET i will done a lot of work like inserting data and also retrieving data but i want to know that how can i get specific record from data base and want to match with my input .
Imports System.Data.OleDb
Public Class frmmain
Dim da As OleDbDataAdapter
[Code].....
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