Allowing Simultaneous Access To Database For Two Different Applications?
Jul 31, 2009
I am developing desktop search engine. For that i am maintaining indexed database with file name and their path. The indexed database is created at once by scanning all hard disk. This indexed database is further updated when user creates, deletes or renames file. The updation task is carried out by an windows service application and for searching files on hard disk I have created another windows aplication. The problem is that when windows service is updating database, windows application can not read database. It gives error 'Cannot open user default database. Login failed.Login failed for user 'WINXPSwapni'.
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Mar 6, 2011
im using ms access 2003 and vb 2010, i already have 3 different vb apps, and i want to access a single database over the lan. but i dont know how. is this possible using a client-server type or is there much simpler way to access the database?
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Aug 15, 2011
how to connect different vb applications to a database server.like accessing data from one database by different applications...
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Oct 19, 2010
I have a program that is running with a Data Connection to Database MS Access Office 2007. I maxed the Database at 1.97 GBytes of memory. I then inserted the Database into my VBasic Program and tried to compile. The compiler gave an error at the Me.ChemicalsTableAdapter.Fill(Me.Chemistry2aDataSet.Chemicals)
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Me.ChemicalsTableAdapter.Fill(Me.Chemistry2aDataSet.Chemicals)
radPrefix.Checked = True
[code]....
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Jun 9, 2009
For some reason I am not able to use DoCmd.OutputTo with my access object in VB.net 2005. I get the following error: 'OutputTo' is ambiguous because multiple kinds of members with this name exist in interface 'Microsoft.Office.Interop.Access.DoCmd
I am referencing the Microsoft Access 12.0 Object Library and using Imports Microsoft.Office.Interop
Dim objAccess As New Access.Application
objAccess.OpenCurrentDatabase("C:Database.mdb", False)
objAccess.DoCmd.OutputTo(
A similiar command Docmd.SendObject seems to work just fine, so I don't know why I am getting that error or how to fix it.
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Oct 9, 2009
I'm trying to make a form that allows users to register new tools with the database. I know how to update the sql server with that information, but there's quite a bit of code that accompanies specific tools (which alter labels on textboxes, etc.) Is it possible to programmatically update the software according to information put into a 'add new tool' form without touching the source code?
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Sep 17, 2009
I am needing to be able to access excel and adobe acrobat menu items and popup Windows (mostly acrobat). Is there a way to do this besides using mouse clicks and sending key strokes (come on, this aint applescript). There are some menu actions I need to automate and I need to be able to discover if a window did open and if so I need to do things in it.
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Mar 17, 2011
Threads a + b, (both are trying to delete files).a gets called first, then b while a is still running.b deletes the file successfully but a doesn't.If I run a on its own, a's file deletes fine.
When I step through the code I can see that a's MultiAttemptFilename gets overwritten with b's.
I don't understand.I have an ajax call pointing to a generic handler which passes the filename along with it.In my handler I have the following code:
[Code]...
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May 23, 2011
I have a class that uses a BackGroundWorker to download a single file using HttpWebRequest and HttpWebResponse
Downloading single file works.
But if I make two objects of that class and start downloading 2 different files simultaneously, there is nothing produced. Execution exits after getResponse() without any error or exception.
Is there any way to achieve simultaneous file download?
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Jul 21, 2009
I have some friends who are 'old-school' VB6 database developers and I was telling them about .NET and its features, specifically ADO.NET. In our conversation, they brought up the following reasons why they would rather stick with ADO than move to ADO.NET: The Dataset is disconnected (What if power fails?)
The same amount of code still has to be written The new options of Dataset, BindingSource and TableAdapter seem confusing the same code is written programatically access the Database, all that changes is how that command is laid out. Why ADO.NET is 'better' than ADO with regards to data access when it comes to Windows Forms applications. What does ADO.NET provide that ADO does not? What does it do better than ADO? I'd like examples that do not involve LINQ.
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Feb 4, 2010
is it possible to use same database for both vb.net appplication and asp.net??and if is possible, how can to connect it?now..i'd build vb.net application and asp.net in my laptop...it can connect..but i wonder how to make the database connect for vb.net and asp.net in real..
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Apr 7, 2009
I've this small application I've built which loops thru our database and generates 30000 mails and sends them using System.Net.SmtpClient, but it's not working very well. At times it won't send for a couple of minutes, all in all it takes about 48 hours for all the mails to be sent. Our mail provider says it's because the mail server can only handle 10 connections simultaneuosly and that would be the reason why it halts. I've looked over the SmtpClient class but can't find any property to set max amount of connections. Does this problem sound familiar? Could that be the reason? If so, is it possible to set the max amount of simultaneous connections from the smtpclient to the mailserver?
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Mar 13, 2010
How can I Access the Enty point method of Form Based Applications?How can I set their attributes?
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Aug 10, 2011
is it possible to have 2 simultaneous key presses with the keydown event. I have a keydown sub with 2 sets of keys mapped to move 2 different pictureboxes. But when I press a key for the other picturebox, the first one stops moving. How do I get both to work at the same time?
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Mar 15, 2010
I want to make a simultaneous connection to multiple servers with threads, only to create a single connection.
Imports System.IO
Imports System.Net.Sockets
Imports System.Text
[Code].....
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Apr 9, 2010
I need to retrieve multiple objects from an external system. The external system supports multiple simultaneous requests (i.e. threads), but it is possible to flood the external system - therefore I want to be able to retrieve multiple objects asynchronously, but I want to be able to throttle the number of simultaneous async requests. i.e. I need to retrieve 100 items, but don't want to be retrieving more than 25 of them at once. When each request of the 25 completes, I want to trigger another retrieval, and once they are all complete I want to return all of the results in the order they were requested (i.e. there is no point returning the results until the entire call is returned). Are there any recommended patterns for this sort of thing?
[Code]...
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Oct 22, 2009
I have a service that needs to run several independent processes, my problem is that it only creates up to 23, from the 24th and so on the processes are not started and a DW20.EXE window error is displayed, it only says that the there has been an unhandled exception and that the proceess is going to be closed. Inside the process.start block there is no error so I guess it could be some limitation somewhere.
[Code]...
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Jun 4, 2011
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.
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May 11, 2009
which method is more efficient to use: DataAdapter and DataSet Or DataReader when importing data from a certain database table???
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Feb 6, 2010
I'm a first time visitor and poster, but I'm definitly going to stick around. I'm running an old version of Visual Studio .Net Academic 2002 and the .Net framework 2.0. I'm stuck on an issue regarding the deployment of a few programs I've thrown together. They all work fine on my development machine, but the problem they all use SQL Server databases, and I can't find any specific help on deploying a windows application with a database on a machine that isn't set up basically just like my development machine.
I know that I need the .net runtime bootstrapper on the target machine, so I can run basic programs that dont use SQL databases. That's no problem. But what about programs that make heavy use of databases? How does one go about deploying it on target machines? Is there a SQL server bootstrapper?
[Code]...
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Mar 28, 2009
Recently i had a discussion with someone about the proper way to develop a database driven (SQL Server) application.In his opinion i should design also the database inside the application.At this moment i design the database in SQL Managaement tool and use a custom class to connect to this database (or the one of the client) in my application.What are the cons and pro's of using the VS database designer inside my IDE?
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Feb 19, 2009
I have an application which takes input on a local machine and sends it to a database stored on a server. I'd like to be able to deploy my application over a number of computers (all on the same network), all of them updating the same database (on the network server).First of all, will this be possible without putting together a completely new application to handle all connections to the database and sorting the entries?
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Dec 28, 2009
I've found out that if two instances of an SSRS report run at the same time, any Code variables declared at the class level (not inside a function) can collide. I suspect this may be the cause of our report failures and I'm working up a potential fix.The reason we're using the Code portion of SSRS at all is for things like custom group and page header calculation. The code is called from expressions in TextBoxes and returns what the current label should be. The code needs to maintain state to remember what the last header value was in order return it when unknown or to store the new header value for reuse
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Oct 15, 2011
I have an application that has an Ms Access 2007 DataBase which runns great if access is installed. Is there any code that I can use in vb that I would be able to run access with out installing it.
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Jun 18, 2009
When I try adding a new data source to my project I get a prompt saying "The connection you selected uses a local data file that is not part of the current project. Would you like to copy the file to your project and modify the connection?"This sounds rather obscure to me, as I'm new to VB.NET and programming non-script apps in general. The data source in this case is a .sdf SQL CE file.
Question 1: If I say that I want to copy the database to the project, what will happen after I compile the app, where the database will be? (how will I edit it from another app?)
Question 2: If I do not include it, how the data source will still keep linked? Can I link using filesystem enviroiment variables like %ProgramFiles%MyAppDir?
Question 3: Can I just tell it to use a read-only (Just needs to read it) data source on the web, like on an FTP?
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Jan 26, 2009
Do users of windows applications have to have the database application installed if your program uses databases to store information? For example, when making VB2008 programs, if I use the visual studio express database (.sdf), or maybe a MSAccess database, to store information within my visual basic program...when I deploy the application to the users, can they run the program okay even if they don't have MSAccess installed on their computer?Also, do I need to have MSAccess installed in order to write programs that use MSAccess databases?
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Aug 21, 2009
how to i iinclude sql2000 database in vb.net desktop applications setup
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May 10, 2012
WinFormsApp Login passes information to .php (server based) Login (provided credentials are correct) to DB to retrieve Decryption Key. WinFormsApp then uses Decryption key on Hardcoded encrypted connection string and renders application usable.This would then eliminate the necessity to encrypt/decrypt a connection string at runtime, virtually rendering any unauthorized person with a useless software.
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Aug 14, 2010
I'm am wanting to get out of access dbs and into something more solid, ive heard that sqlite or mysql are great database tools for your applications. I am also looking for a database with a GUi to manage the database more easily and links on how to incorporate the database into my projects, etc. So any links,videos, suggestions i'd like to hear them all.
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Sep 12, 2011
I am working on a project that is used for key broadcasting. Don't worry nothing illegal, I'm making a multibox application for world of warcraft. However I am having trouble when it comes to launching and manipulating other applications from another.
[Code]...
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