Code:
Dim cn As New ADODB.Connection()
cn.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=D:BackupEon of LightEon Of Light.mdb"
[code]....
' This code not Working :('Error Messege in md.Save()
1.How to connect MSHFlexGrid to many tables in MSAccess database through ADODC in vb 6.0?
2.How to add 2 or 3 grids in MSHFlexGrid in vb.net?
3.How to design a data report dynamically with more than 2 or more tables of MSAccess database?
how can i access the sql server express database table in vb.net on forms to insert records,delete records,search records,edit records.I have made table by using visual studio.
View 5 RepliesOn my add button i still have to add codes that disables my navigation buttons and and my search button... and add codes that will enable them in save button... im still new thats why my codes are just simple if, else if, else conditions that just manipulates enable, visible, text, properties..also if i search my data will be search but my textboxes only shows the searched data.. i still have to add button that will only be visible if the program finds a data... and this button function is to remove the filter..rather than disabling some functions i want a messagebox to prompt the user that this functions arent functionable...
Look at my codes... i find it lame... its kinda irritating always just using True and false..
Public Class moviesForm
Private Sub moviesForm_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[CODE]...
save, edit and delete files in the data grid.
View 1 RepliesI need to be able to save, edit, and delete records in an access database through vb2008. Editing and deleting records works perfect, but I cannot save new records. Can anyone assist?
Here is my code
Imports System.Data.OleDb
Public Class Main_Form
Dim con As OleDbConnection
Dim cmd As OleDbCommand
[code].....
I have a main form (Form 1) with a menu strip and navigation bar. I use the main form to launch other forms (Form 2) as children of the main form.
All of the children forms contain SQL data sets /grids. I would like (if possible) to use the save button on the main form, to save data changes of the children form to the SQL database.
I have created simple database project, using vb.net, ado.net, oledb, datatable, datagridview.My program is working nice, Here i m facing Problem with Update Record, when I update Record it only update table in Memory not in Real Database. or some times it shows error message.this is my code for Update button i m facing problem with Private Sub btnUpdate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnUpdate.Click
[Code]...
I get an error using the connection string (url...) to connect to my SQL CE saying that "Provider 'Microsoft.SqlServerCe. Client.3.5' is not registered in the local PC.".In my project I have a table connected (with the wizard) to the same database and it works fine, but when i try to connect with my own code it FAIL. [code]
View 1 Replieswhen i got to ADODC and try to go to connectionString in the properties of ADODC, the ConnectionString Dialog Box will not open when i click on it its wants me to type some kind of text. However on tutorial it clearly states that a dialog box should open up.
View 5 RepliesI was trying to edit a excel document and save under different name and my coding for this is as follows.
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
'Open
Dim MyExcel As New Excel.Application
MyExcel.Workbooks.Open("C:\Test\WalkAir.xlsx")
'Extract
MyExcel.Sheets("sheet1").Activate()
[Code] .....
While debugging the code it resulting with me an error message as Public member 'SaveAs' on type 'ApplicationClass' not found.
Coming across a curious problem... I'm using a SQLCE database. In thebindingnavigatorsaveitem I have the generated code.. the validate, bindingsource.endedit, and the tableadaptermanager.updateall.Here's what I'm doing. I create a record and then click save. Then I decided to delete the record. When I try to save it again, I get an error - "System.Data.DBConcurrencyException: Concurrency violation: the DeleteCommand affected 0 of the expected
View 8 Repliesi am a beginner level member of vs2008i had create a interface. In Daily Transec.vb form i cant insert, edit, delete, go prev and net data. already i had created a localdatabase as "Expense"need you help to complete itso this is request to u that plz chk the link file and complete the DailyTran.vb form. nothing else
View 2 RepliesHow to perform add, edit, delete in a dataset that will update the database as well?
View 1 RepliesPrivate Sub btnSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSave.Click
[Code]...
We have developed a VB 2008 app that uses SQL Server 2005 Express to store data collected by this app. This app has been designed to allow multiple connections to the one centralized database.
I have ran a few tests, and confirmed that if one computer running our app is accessing a database residing on a different computer,and the network connection between two computers has been severed, it would take approximately 3.5 minutes before I would get a connection timed out exception error from within my code.
I have deliberately set the ConnectTimeout property in the SQL connection string to be 15 seconds. But some how, SQL database engine still retries until approx. 3.5 minutes later.
My thinking is that I have a subroutine that would attempt to open a database once a minute.If the open attempt is not successful, and resulted in an exception, then I would popup a message to notify the user that the connection is not available.
Doing it this way, I have confirmed that it would take about 1.5 minutes for it to re-establish the connection, once the actual network connection has been restored.
To make the long story short, I would like to find a way to shorten the detection for a broken connection, and let the user know sooner, rather than locking up the app during the 3.5 minutes period has elapsed, and at the mercy of the SQL database engine to timeout. And why would it take 3.5 minutes to timeout the connection attempt when I had explicitly use 15 seconds in my connection string?
I have a simple scraper. It works on some websites, but on some there is this Error:
Quote:
IOException was unhandled Unable to read data from the transport connection: The connection was closed
It is occuring at "Dim htmlresults As String = Urlcontents.ReadToEnd()".
'Create the HttpWebRequest object
Dim req As HttpWebRequest = WebRequest.Create(URL)
'Set the timeout to 1 second (or 1,000 milliseconds)
req.Timeout = 10000
[code]....
I am porting a college project made in VB6 to VB.NET, which I am quite new to. I'm finding data bindings a little more frustrating than the ADO controls VB6 had. Here is an example of RecordCount being used in the old code, from the login screen:
Private Sub cmdLogon_Click()
If txtID.Text = "" And txtPassword.Text = "" Then
i need a simple phonebook program using vb.net 2008 and access 2007 using ado.net with add , edit , delete buttons
View 2 Replies1.Establishing a connection to a database(preferably one that is inherit within the project and can travel with it)
2. Setting the correct references to the database ( I tried connecting via JET with windows 7 and I get an error that I cannot use JET)
3. Query the database (Access) with SQL, and return those results to a recordset.
4. Loop through the recordset.
5. close the database connection
6. Open recordset and write data to table.
[Code]...
Is there a way one can edit sound, say for example you have an mp3 sound it is 12sec long, but you want to fit it into 10sec. is there a way one can write a code that automatically adjust the sound so that it only play faster and save it as mp3 again? I am not talking about existing programs to do it. rather a standalone app?
View 1 RepliesI am using Regex operation by retriving column into Richtextbox and run sevral time of all regex operation ( which is quite good and faster on that) then updating that inti database (Sqlite).
1. Retriving 1 million of record column into richtextbox from database.
2. updating database with that.(using richtextbox).these things killing time.
what to use in place of that.(means what to use for fast preview-run regex - update that edited column into database)
I got a situation where I need to update the details of an order. So there is an order, and there are many products in that order, and the way I am updating that bit at the moment is simply 'delete and save'. But what happens is that it deletes first and them saves products which would be fair enough but if anything in save function goes wrong the order leaves with no products. So how would I know if I will get an error?
View 1 RepliesI am making some kind of calendar where I can add tasks, so I can easily organise my tasks. For it to complete, I have 3 things I can't figure out how to do it:
1. When I launch the program, I want the items in my listbox to be sorted alphabeticly.
2. I want to save the items in the listbox, so if I close the program and reopen it the items are still saved in the listbox.
3. The items in the listbox all start with a date, fe. "13-4" for today. If that date already passed I want that item to be deleted.
I am using MS Access 2007 as database and VB 2008 to build an application to show the content of 2 tables as a single table.I have two tables in MS Access and i have linked both the tables using "ID" as primary key(1st Table),foreign key(2nd Table). I used Query Wizard to show the data of both tables in a single table(3rd Table).I am able to view the content of all 3 tables using datagridview in vb 2008(Using Code), but i am unable to add,delete,save and search the content of the table using code. My concern is,i will be able to do all these operations using codes only.Would you please help me out in this.
View 5 RepliesI have an application where I would like to allow the user to change one field in a datatable but leave the other ones uneditable. I am using a datagridview to do this but I can only make the whole table editable or not. The result should be an order form where you have a determined product and should only be able to change the number of items.
View 2 RepliesIn my datagrid, i added a checkbox column, and what i want to do is be able to change the value of one column (in as many rows that are selected) to a certain value. Like from a combo box is it possible to have a combobox in a messagebox? or do you have to create a new form?
View 5 RepliesI am a beginner VB.NET programmer, and I was hoping that there is a post that has a application that adds, edits, and deletes records from a Access database. Nothing fancy, just a simple interface to get me started.
View 1 RepliesAdd edit delete button
View 3 Replieshow to add edit delete using sql.
View 1 Replies