I have a project with a .sdf database include it. The problem is that this database have a lot of data and I have modified some tables adding new columns, etc. How can I update the application without uninstall it and lost all the old database data? Are the some way to update the .sdf database of visual studio with out lost the data.
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I have a small doubt: (VB.Net 2005, MS-Access 2007)Is it possible to add the current row from DGV to DB as soon as the row lost its focus..i.e. whenever i add a new row in DataGridView it should automatically get inserted into the database without pressing any buttons... Bcoz i need to add more new rows dynamically & hence i find little difficult in clicking the ADD button again and again to insert each and every Record.
View 1 RepliesI 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'm working on a project at the moment that relies heavily on the configuration information stored in My.Settings. The problem is, whenever I update the software, it resets the settings. I'm thinking it may have something to do with the way I update the software. I make my changes to the program, then up the version of the application and its setup project (also creating a new Product Code). Afterward, I just run the new install to update the application.
View 4 RepliesI have used OleDbDataAdapter to Update DataSet
In DataSet ,there are two RowData(or >2 RowData) will be Update
After I used OleDbDataAdapter.Update(Dataset),there are only one(expect last one) RowData have Updated ,and the Last one Rowdata not be Updated to the Database .
If the Dataset have only one RowData to Update ,It's allright,it will be update to the DB
The Database ,i use is Access2007 ,Who can tell me why this will happen
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
[Code]...
I have two data tables. the second related to the first. Using a datagridview for the first table I am able to enter and save data ok. if I run the code twice in a row the data is still there. When I edit the data in the related table in it's own datagirdview the data is there and displays correctly, but on running the code a second time the related data is lost. In both cellendedit events I am using
Me.table.Update(Me.FigsDataSet.table)
Me.Validate()
i can't update my data at database this my code :
VB.NET
Private Sub cmdSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdSave.Click
Try
'Dim ds As New DataSet
[code]....
i have problem when update data, data not updated.
I have just started using VB.NET 2005 after a long break.My question is that I retrieved data from access table and showed them on to ListView. Now some of the data has been changed.How can I update the data into database again.
View 1 RepliesMy Code:
Code:
Imports System.Data
Public Class Form4
[code].....
using dataadpter how to update data in database
View 2 RepliesI am testing to insert a record to the table from the form by button click event.Data was temporarily hard-coded for testing.There is data grid view opened on the form as well.When the button is clicked, the data was inserted in the data-grid.But after exit out, I don't see in the table.When I run the program, I don't see in the data grid view as well.
Dim newCustomerRow As CustomerLookupDS.CustomerRow
newCustomerRow = CustomerLookupDS.Customer.NewCustomerRow()
newCustomerRow.CustomerID = 123
[code]....
how to insert and update the data to the database when i am using window forms?
View 3 RepliesIm now creating an inventory system for my project.
i having difficulty with my project im using combobox to select data from database and i want to update the data. if i selected second row of the data it will update the first row of the data.
eg.
"comboboxitem_name" - red ball pen
- blue ball pen
- black ball pen
"quantitytextbox"- 100
"reorder_quantitytextbox"-20
when i selected the "blue ball pen" and fill the information that i want to update then press the submit button. the red ball pen will update with the information that i want to update to "blue ball pen" and the "red ball pen" will change it name to
"blue ball pen". and now i have two "blue ball pen", one with "red ball pen" information and the other one with original "blue ball pen" information.
My datagridview is displaying records from table in database.When I go to add a new record the 'pencil' icon does not appear so when I click on save button update to database table does not take place.code behind save button is
BindingContext(TheatreBindingSource).EndCurrentEdit()
PatientTableAdapter.Update(TheatreDataSet)
PatientTableAdapter.Connection.Close()
i have spent all day trying to sort this ...any ideas and yes my theatrebindsource.allownew is set to true
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......
so i just bought a years web hosting with godaddy, and apparently i have one ms SQL 2008 database, is this compatible with VB ? and if so how can i link them together? i need the user to be able to update the database but also read data from it.
View 15 RepliesI have an application in which I want to update only if new data is entered. If no data is entered, then it doesnot update.Any way I can check in the database? If it doesn't update, then it will not give a message that the records updated.
View 3 RepliesI'm doing small system using database 03. I had function to add data into a comboBox. When i add a new data into the the same field using another form, then back to the main Form the comboBox does not update the current data in database..
Codes i tried:
'Form Load
Private Sub FrmMain_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[CODE]...
i am trying to update database with updated data in data adapter. here is error message. "Update requires a valid UpdateCommand when passed DataRow collection with modified rows." here is my code.i get this error when i try to update dataadapter with following line.
[Code]...
i m unable to update data into my database in vb 2008. the changes are reflected in the dataset but they are not reflected in database. i have set the datasource's copy to output property to copy if new but it is still not working.
View 6 RepliesI have a form where i can enter new product. In that same form i have listbox where i show the current product from the database.
I want to know how to update that listbox as i enter new product into the database so that user can see the current content of the product table.
my code to load the listbox
Try
Dim ds As New DataSet
Dim cmd As New OleDbCommand
[Code].....
To sum it up, what i want is something that will refresh the current display of the listbox so user can see the actual and updated contents of the database.
with the above code, the newly entered product/data can only be seen when the program is closed and reopened again. Which is not very convenient.
I'm currently working on an application written in VB.net using Visual Studio. The app retrieves and updates data from a remote database. While debugging, I updated a particular row in the database and after messing around a bit managed to crash the app. Since then, whenever I fetch that particular row, the data that was previously updated continues to be retreived - regardless of what is actually in the database.
All other rows properly reflect the data in the database and are capable of being updated through the application as they should. However with this one particular row it continues to retrieve outdated data and locks up the application when I attempt to perform an update. Does Visual Studio create some sort of local copy of the database which was perhaps corrupted?
Here is the code for the loading the combobox. I want to load the combobox with the Name of client. so that user can select the Name and then the details which are associated with that ClientName are to be displayed in the desired textboxes.
View 4 RepliesVB.NET i have only one colum in back end database that is roll. .. Now i want to update a particular data .. the data types is integer.. i has a data like 12 and i ant to update it 13 how can i do..
[Code]...
I have the following code to try and change a field in a Microsoft SQL database. I don't get any Exceptions when processing the code but I use the Microsoft SQL Management Studio to view the data before and after but the data does not change.
myDataAdapter.SelectCommand = New SqlCommand
myDataAdapter.SelectCommand.Connection = New SqlConnection(myConnectString)
myDataAdapter.SelectCommand.CommandText = mySqlString
[code]....
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
[Code]....
This is the code for displaying data from database to gridview....If i am doing any changes in GridView and it has to update in database.[code]...
View 1 Replies[code]...I am using above method to update the newly added value and modified values. It generates many duplicated rows in the database table.If my datatable object has been both newly added rows and modified rows, what is the best to update the database?
View 6 Repliesi think there is a problem with my code below....it insert the data more than 1 record (data redundancy) in the server database....i think there is a problem at the place i highlight with red....
If Not Update_ServerPOS() Then
Update_TempPOS()
End If Public Function Update_ServerPOS() As Boolean
[code].....
