I want to update data into an access database containing three fields of text type.
so in the design i added three text box and one button.........on button click the data corresponding to textbox3 will be updated by textbox1 and textbox2.
then i coded it as follows:
Imports System.Data
Imports System.Data.OleDb
Public Class Form1
Dim con As OleDbConnection
[Code].....
It is running and executing good........But finally the data in the database is not updated.........Hence i say the above code does not work......
This program is very difficult for me, but I must get threw it or I cannot finish... What I am doing is making a Database of foreign Languages with the spelling of the words and the pronounciation inside the database... The USER enters a paragraph of words into the translator textbox and pushed translate. The program has a DATABANK of words with the phonetic spellings and matches the word, then translates to phonetics. The problem is that new words keep appearing inside the language. So I incorporated a Database of 2 fields
I'm actually making a library system and I'm having problems with my data not saving in the database. It does appear in the DataGrid but after I close the application and check the database, nothing's there. [URL]
Here's the code.
Imports System.Data.OleDb Imports System.Object Public Class AddBook
I have a problem that is bugging the hell out of me..... I need to know how to update an access database from an unbound datagridview using vb.net 2008 here is my code but it dont want to work, I need the simplest way.
i have a basic form in vb using .net framework 3.5,when the save button is clicked, it should update the data from the form to the access 2007 database,however, the whole thing runs up to the point in bold,
here it says that "The ConnectionString property has not been initialized" Private Sub Holiday_BookingBindingNavigatorSaveItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Holiday_BookingBindingNavigatorSaveItem.Click
currently i had a program which working fine when its running in the solution explorer,but after published,problem comes.my datagridview cant show updated data while my database access already update...my datagridview only show existed data.could it be my datagrid problem?i get my data programmatically or is my INSERT command doesn't update the dataset?but in the solution explorer does show the dataset was updated. [code]
I got a system which i want to insert, delete, update the data into my database and the data from database will be display using datagrid. The below is the coding for one of my button, delete.
Private Sub btnDelete_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnDelete.Click Try btnSearchEmpNo.Enabled = False[code].....
Now I wanna set when user click on this button to delete a employee (for example) then the datagrid that i have in my application will not show the data of the deleted employee but in the background, the employee haven't been deleted from database.The employee only will be deleted from database when the user click on SAVE button.I know this application have to use RowState but how?
I created a dataset and i am using OleDbDataAdapter to insert new values to access database. But when i close the program and after open it, values are not in the database. How can i solve this problem? Also, i have another problem. When i write codes that
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.
I'm having problems with the updating of my datagridview. I can update to the MS Access database. The problem is I cannot update to my datagridview!-[code]
I am trying to update a field in a MS Access database and it appears to be working but it keeps coming up with an error on the last line "executeNonQuery", I think it has something to do with data type but not sure.
Using conProduct cmd1 = New OleDbCommand("UPDATE tblSODetails SET StartTime = " & soStartTime & " WHERE SO = " & CurSO & "", conProduct)
I have created a datagrid and populated it with data from a database. When the data is changed, I try to update the database and I get an error without any description of what the error is.to fill the grid:
dsjobs.Clear() With dbAdaptr 'populate jobs table Dim SQLStr As String = "Select * from jobs"
How can I do that? I already have the code I'm working on but it seems that it doesn't work really fine. I input an id number(unique) on a text box and click the search button. The entries that corresponds to the id number is then displayed on the other text boxes. And then I try to edit one of the entries manually(changing its letters or name) then I click the update button.
Here is now the problem: It really updates the entry but it makes a mirror of the entry with a different id number(maybe automatically generated). So basically the ms access database will now contain the old entry and the updated version of the entry.
I am trying to import data from an access database to a access database that my project uses I am having problems with combo box fields in the database with the data. I want to import what is displayed instead of the numerical key value. Example: The combo box displays employee names but the value stored is the key value from the employee table so instead of importing John Doe it imports 2 is there a way to make the actual name instead of the number?
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.
I am trying to update a Database via a form. In the update button I Have the below code HTML Dim bm As BindingManagerBase = frmFindCustomer.DataGridView1.BindingContext( _ frmFindCustomer.DataGridView1.DataSource, frmFindCustomer.DataGridView1.DataMember) dr = CType(bm.Current, DataRowView).Row 'This gets a reference to the row currently being edited 'dr.BeginEdit() [Code] ..... I do not get any error messages but the database is not getting updated.
I am an experienced VB6 programmer trying to adapt to the vb.net mindset. I am using Visual Basic 8 and I am using Microsoft Access 2003 as my database. I have spent the past 6 hours trying to do something as simple as updating my database for the following event. Everything I find on the net is either using SQL server or bound controls (which I don't think can work here).
I have a login page (gets the data from the database)( which then opens my main form. This works fine. I then have a menu item that allows the user to change his password. After doing all the appropriate validity checks, the program is supposed to save the new password back to the database. This does not work. I have a textbox where the user enters the new password. How do I set up (in code) the appropriate objects to then save the data. The pertinent code is below. I have left off the connection string (cn) as I know it works.
I have a form in vb8 that is set up as follows: I have a table in my Access database calledUsers that has a name and a password (encrypted). Using the toolbar I created aBindingSource with a name of UsersBindingSource and a dataSource ofUsers Using the toolbar I created aDataset called with a Name and a DatasetName called Users_Dataset Using the toolbar I created atableAdapter called UsersTableAdapter I added two textboxes on the form and changed theirDatabindings...Text property to the corresponding field in the Database.
How to now update the database when I click Update. What the program needs to do first is encrypt the Password before saving it. I wrote the code in the TextBox2.Lostfocus event to encrypt the data a place it back into the TestBox2 field. The only samples I find on the net refer to DataGridView controls (which work) but I don't want to use them. How can I get the database to accept these changes as well as changes to radio buttons or comboboxes?
i have access database. its data is laoded to datagridview in vb.net langauge. i want to edit some data in the datagridview and this edit should be save in the database too when i press button edit. i used this code but it is edit for only one time and if i do any action before it it will not work.
Dim ConnString As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:UsersHaidarDesktopcustomer listNewFarahnetFarahnetCustomers.mdb" Dim SQLString As String = "SELECT * FROM customers ORDER BY Fname ASC" private da As OleDbDataAdapter
I've been perusing some hep forums and some help books but cant seem to get my head wrapped around this. My task is to read data from two text files and then load that data into an existing MS Access 2007 database. So here is what i'm trying to do:
Read data from first text file and for every line of data add data to a DataTable using CarID as my unique field. Read data from second text file and look for existing CarID in DataTable if exists update that row. If it doesnt exist add a new row. once im done push the contents of the DataTable to the database.
What i have so far:
Dim sSQL As String = "SELECT * FROM tblCars" Dim da As New OleDb.OleDbDataAdapter(sSQL, conn) Dim ds As New DataSet
[Code].....
In constructing my table i use "SELECT * FROM tblCars" but what if that table has millions of records already. Is that not a waste of resources? Should i be trying something different if i want to update with new records?
Once Im done with the first text file i then go to my next text file. Whats the best approach here: To First look for an existing record based on CarNum or to create a second table and then merge the two at the end?
Finally when the DataTable is done being populated and im pushing it to the database i want to make sure that if records already exist with three primary fields (DriveDate, DCode, and CarNum) that they get updated with new fields and if it doesn't exist then those records get appended. Is that possible with my process?
I have been working on this for a couple days now, and I am ready to throw my computer through the window.I am still rough around the edges with Visual Studio 2010.When I run the project, it works just as it should. the fields populate with the selected items from the .accdb, and I can navigate just fine up and down the rows. The problem comes when I try to update the info. When I change a value and hit the update button I get the following ERROR: System.Data.OleDb.OleDbException was unhandled Syntax error (missing operator) in query expression '((PID = ?)
I would like to update an Access database at a particular time.For example:I have a startdatetime = 11/08/2011 8:00 AM.I want to update the database when DateTime.Now = Startdatetime.AddMinutes(30)I thought about using a Timer, but i am not sure how to update the database when the timer stops.Note: This statement will be in a loop, because I will be updating e.g For i = 1 to n
I am building a project in Visual Studio 2008 using VB. I have a Access Database and i have made all connections success and Viewing data in Grid Control Successfully.i am editing SQL Server Database Successfully using Same pattern and Code.when i use Access Database using Same code and Dataset there is no change apply to the Access Databasebut when i change or add new record to a Databa Table i have no error but when i check the Database there is no change has been updated or no New record added to the database.
