Database Backend (.MDB) Copied To Project Directory - Connect To Network Drive
Apr 20, 2009
I'm a bit new to VB.NET and I have a database which I want to connect to an access backend stored on a network drive for multiple users. I can view the Database in the solution explorer and the directory defaults to the project folder. How can I specify the directory to pull from my network drive? VS has copied this datasource and imported it locally which is fine for testing, but i need the file accessible for multiple users. Is this something I do when publishing?
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Aug 30, 2010
I Have a batch file in a server in my network. I maped that shared folder (that batch file exist in it) every time that I want to run that batch file first I should have to connect to that network drive(with username and password) How can I do it in my code . I want to connect to that network drive by code in my form_load. I test codes below but it dose'nt work.
AppDomain.CurrentDomain.SetPrincipalPolicy(Princip alPolicy.WindowsPrincipal)
Dim idnt As New WindowsIdentity(username, password)
Dim context As WindowsImpersonationContext = idnt.Impersonate
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Nov 20, 2009
I want my high school students to be able to save their VB projects to their network drive folder on the school's fileserver. The students do not have access to the c: drive by Group Policy. VB does not even see the network drive each student has mapped. I have googled around and discovered it has to do with VB not trusting any network folders. There is a supposed solution by using the .net framework configuration tool but I had no success getting that to work. Right now I have them saving their project to their usb drives. They have a tendency to lose or forget those. Is there a simple way of getting those network folders accessable?
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Feb 19, 2009
First off a short background of the project I am working on- I am developing a program that will be run off removable media (i.e. USB Flash drive). This will be a �virtual desktop� which you will be able to take with you and have the same �desktop� on any system. As we know drive letters can change with each host system the drive is plugged into, I need to be able to determine the path for the flash drive and access a specific folder ( i.e. My Documents)
I have an picture box(representing the icon) placed on my form (form1) and when I click the icon I want to be able to open and view the a specific folder from the portable drive. I need a click event that will determine a dynamic drive letter for a directory on the removable drive and then open that directory in an explorer window.
[Code]....
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Feb 3, 2010
I'm just getting started with VB.NET and SQL Server 2005. I have VS2008 installed on my machine. My SQL Server is in a domain that my machine is not a part of. Here's my code that I'm using to establish a connection:
Dim conn As New SqlConnection
conn.ConnectionString = "Server=SQLServer.hbug.lan;Initial Catalog=HUGRegistration;Trusted_Connection=True"
This code is part of a console app. that I'm using as a test. I'm just trying to set up a simple connection and then read data from the database. When I run this console app. in VS, the program hangs for a few seconds and then I get an error "SQLServerProvider has stopped working". My options are Debug or Close program. When I choose Close program, then an error pops up in my console window "Error: Unahandled Exception: System.NullReferenceException: Object reference not set to an instance of an object. I assume this error is spawning from not connecting to the database properly.
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Apr 19, 2010
1- I've a database access without password on the Server.I've created forms by vb.net to connect to database through OLedb Connection *like this
PHP
Dim Connec As New OleDbConnection("provider=microsoft.jet.oledb.4.0; data source = \Serverc$xDB.mdb;")
my problem is : I worte : if I want to connect to database from any pc I must save Username and password to control userpasswords2 (soted user name and password from User accounts)that's big problem , so I must save this to all client pc and the client can access Server system Drive there are no security ,this is the fifth day to find a way to connect to my database from server without share system drive.I tried to used it but not working.where can I write server name and path database and server's User-name and password.I've an exe file on server drive like this \Serverc$1.exe
I want some client to run this file with out share the file.If I can to creat a form by vb.net has a Username and password to run this exe without client know the userName and password.I'found map network , but is not ok for me.If I mapped network drive to client, then he can copy files and read some of security data.Is there a way to access this file from server without mapping or sharing folder for public ?
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Feb 7, 2010
I make my Program to Connect via Network to Database..[code]
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Jul 6, 2009
I want to connect an access dabase from a central server using vb.net 2005.
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Jul 14, 2010
I am using Microsoft visual basic 2010 and SQL server 2008.I develop a small database application and it run well on my pc.I built and distributed the application to other pc on the same network, but when I run the application from other pc I got error message like this:A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections.(provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified)[code]
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Mar 3, 2010
I'm trying to connect to a database on a big corperate network (access db). I can not load my application and DB on a shared network drive as it does not have the correct permissions. How else can I try connecting to a db of some sort and allow users to insert/edit/delete rows? as it's a network drive I can not install a DB such as SQL Server on it.
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Dec 10, 2008
Does anyone know if there is a way to determine if a drive is local or a network drive?
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Oct 26, 2009
I have some really nice Python code to do what I need to do.I don't particularly like any of the Python GUI choices though. wxPython is nice, but for what I need, the speed on resizing,refreshing and dynamically adding controls just isn't there. I would like to create the GUI in VB.NET.I imagine I could use IronPython to link the two,but that creates a dependency on a rather large third-party product. I was perusing the MSDN documentation on Windows IPC and got the idea to use sockets. I copied the Python echo server code from the Python documentation and in under 5 minutes was able to create a client in VB.NET without even reading the System.Net.Sockets documentation, so this certainly doesn't seem too hard.
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May 28, 2009
Basically back in VB6 days, I created several VB6 apps with Access as the backend database. I'd package my Access db file with the application setup, which copied it on to a shared network drive, and then different computers on the LAN could use the same backend database file, and that worked just fine. With SQL and VB .Net, I've done work with a SQL database hosted on a remote server, so you can basically build your query string easily and anyone can connect to it from anywhere, and it works just fine.However, what I'd like to do is have a local SQL express database as the backend for a VB .Net application and make a setup program that can install it in a way that it could be shared on a Local area network, without the user who is installing the application do anything.
I know about building a connection string with the local machine name, but I don't really have any experience with including an actual MDF file with the application. Does anyone know how it works, and is it a better approach? Does it work similar to placing an access file in a shared unc path?I know that ClickOnce (which is awesome) can install SQL express easily on a user's machine. However, the key is that I want SQL express to be installed only on the machine that is going to be the database server in a LAN enviornment, and not on every machine, unless it is neccesseary. And then how does your VB app know how to build the connection string to access the database from any machine on the local share?
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Dec 17, 2011
I am Using a Application server for calling Oracle Reports and i have url to call the report when report is called the server convert it into pdf but when report contain large data it got a lot of time to load.I want to do in asp.net that when i call the report url it open the pdf file and copies it into the root of my web folder and next time when i call the url it open the pdf file and on back end loads the I want to call function on hyerplink in new tab.i want to use multithreading to call one file from root directory and other to download on backend
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Aug 11, 2011
i was create the .exe of vb.net project with sql server in backend. when i install it any other computer that time it is not connect to the data base. whta i do for that.
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Mar 30, 2010
I have recently learnt vs '05 and am creating a project in vb.net '05.my question is-During project development, we connect it to MS SqL server 2005 express installed on my system and it works.( I use add datasource wizard,add sqldataadapter,add gridview control,generate dataset,connect dataset to gridview method). But after the project is finished and we create its executable, the project will be run on adiffrent machine with a different server name and hence a new connection string will be required.
How can i make my project detect server details and connect to it, at runtime ? because the user is only expexted to start the server and open my application.the app must connect to the new server on its own. If anybody has an answer or if you know some resource where i can find it, please post here. Any suggestions are welcome.
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Aug 15, 2011
1. Form created in VB2008
3 Textbox [Name(string), Company(string), Contact(number)]
3 Buttons [New Record, Update Record, Delete Record]
2. Database created in MS Access 2003
File Name: Contact.mbd
Fields:
ID [Primary key]
Name [Text]
Company [Text]
Contact [Number]
How to Create Connection?How to get data on form load from database in textboxes?How to insert, update, delete data?
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Dec 30, 2011
I am using Following Codes to connect my project to Access Database:-
CODE:
I want to use Database which is located on My Solution Explorer So My Question is that how can i connect Database which is located on the solution explorer
CODE:
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Jul 22, 2011
I have a project I built in VB 2010 Express Edition. I copied the project's folder to a flash drive, pasted it into the visual studio 2010 projects folder on a different computer, and opened it with VB 2010 Express Edition on that computer. I can view the code, but when I try to open the design view, I get the following error:
[Code]...
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Nov 24, 2010
Tell me if I want to run a project that is created in vb.net 2010 and uses a backend SQL Server 2005.........how many changes can be done in a project to run on another computer....?what connection string I can write for it.......?which software do I need to install on the other computer to run a project on it.......
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Feb 9, 2010
I have been learning about working with databases and VB. I have coded the connection string for a MS Access database to my VB project but i cannot establish a connection with my sql mdf database.
The code i used to connect to MS Access is:
<Dim dt As New DataTable()/>
<Dim match As String = ""/>
< Dim connStr As String = "Provider=Microsoft.Jet.OLEDB.4.0;" & _
[Code]....
What is the connection code in order to manipulate data from the mdf file. Is it similar to the above code.
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Dec 30, 2010
i am trying to connect to a password-protected MS Access 2007 database. I don't have any problems connecting to the database when the database is stored on the C drive, the following command works for me:
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Aug 24, 2009
Compile DLL to network drive
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Jul 10, 2009
I am using some like following code to get UNC path of drive letter.
Dim query As New System.Management.ObjectQuery("select * from Win32_LogicalDisk")
Using searcher As New System.Management.ManagementObjectSearcher(Query)
'loops for all drives on system
For Each Mgmt As System.Management.ManagementObject In searcher.Get()
And it was working but now it is giving error. Below is error with stack trace
{"Specified cast is not valid."}
at System.Management.ThreadDispatch.Start()
at System.Management.ManagementScope.Initialize()
at System.Management.ManagementObjectSearcher.Initialize()
at System.Management.ManagementObjectSearcher.Get()
I also want to know alternative way to get unc path of drive that is also not depend on windows API. As there is a class driveinfo to get all drives (including network) on system. Is there any class that also provide complete or unc path information of Drive.
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Aug 16, 2011
I've followed the instructions found at the letter (albeit also adding the parameters to pass a username and password), but have had no success connecting to a network drive that requires authentication to access.
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Sep 2, 2011
I'm working on a program that is used as a tool to quickly search & Open CAD drawings on our network. I have it working for the most part, but it is very slow. Right now I have an ini file with the path to the Directory I want to search for Example "G:" I think the reason this is so slow, is because there are other folders in this directory that don't need to be searched. My idea is to add all of the paths I want the program to search in the ini file, but I don't know how I will have it search through this using vb code
want my ini file to look like this
G:A
G:B
G:C
G:E
So directory D would not be searched by the program because its not in the list.
MyCode
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim PathReader As IO.StreamReader
PathReader = IO.File.OpenText("C:ISOExplorerPath.ini")
[code]....
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Mar 27, 2009
i have a network drive mapped to z each time i turn on the pc that drive is disconnected but i can see the z letter and if i click they return, there is some way to active that letter/drive but vb.net?
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Mar 2, 2010
How can I map a network drive over a Windows Service. What I did until now.
Using the Shell command. -> not working.
vb.net
Shell("net use \" & My.Settings.ParaRootPath & " " & My.Settings.ParaPasswordHTTPS & " " & "/user:" & My.Settings.ParaLoginHTTPS)
Using a System.Diagnostics.Process object. -> not working
vb.net
ShellExecute As New System.Diagnostics.Process
ShellExecute.StartInfo.RedirectStandardOutput = True
ShellExecute.StartInfo.FileName = "cmd.exe"
[Code].....
If I run the application as normal application, it is working correctly.
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Mar 29, 2008
How can I save a file to a folder on a network drive. I have the drive mapped on my pc as "G:" but someone else could have it mapped as "Q:" or something. I can save if I use "G:ServerNameDriveNamefolder"; but can't from another pc unless I change the code to what the drive is mapped to on that pc.
Here is the code I'm trying to use to direct to the folder with out using the mapped drive:
Code:
Private Sub Button9_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button9.Click
FileOpen(1, "\ServerNameDriveNameFolder" & filenamec.Text, OpenMode.Output) 'location of the file.
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Jun 30, 2009
I have developed a visual basic app in Visual studio 2008. I have created a windows installer file. Can I deploy this on a network drive and does .NET framework have to be installed on server? The application has a MS access database associated with it, so I would like to have it backed up via the network.
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