VB 2010 Express Opens MS Access Database As Read Only
May 16, 2011
I am brand new to VB. I am using VB 2010 Express. I have a MS Access database and can read & display the data. However, when I enter a line of code to manipulate the data I get a "read only" error message in the project editor. I have checked the file and directory structures from windows and the command prompt. I have even used the "attrib" command to make sure the file was not read only. Then I put the following code in the form and it dispaly the read only message.
Dim infoReader As System.IO.FileInfo
infoReader = My.Computer.FileSystem.GetFileInfo("C:zzz-devaccesswhitneywhitney.accdb")
If infoReader.IsReadOnly = True Then
MsgBox("File is readonly!")
End If
I am using the VB 2010 Express DataSource to connect to the MS Access database and not a connection string in the program.
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Apr 19, 2011
I have recently decided to give .net another chance, but i have a few questions about it before i get really into it. RE: Files, I use random access files to store data as opposed to databases (namely i don't see the need for a database for storing so little information(records <200 max) knowing that it is an older system and less "cool" i don't care...) Will vs2010 express read, write to random access files? Would it be done kind of like vb6 (which is my current vb version)? I will be needing to print the text of rich text boxes, is vs2010 express capable of doing this?
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May 22, 2012
I posted this as a bug on MS Connect and am wondering if anybody else can verify the problem: I been beating my head against the wall for about 3 days and I don't think it is my problem.
Desktop computer - Vista 64 bit
Portable Computer - Vista 32 bit
vb.net 2010 express on both of them
I can not establish a connection to an Access db (either .mdb OR .accdb) on the 64 bit computer. When I try I keep getting a message that says "Format at the initialization string does not conform to specification starting at index 0." (this was typed not copied). (There are screen shots over on Connect).
I can establish a connection to a "Microsoft SQL Server Compact Edition" (.sdf) database on the 64 bit computer.I can estabish a connection to all 3 types on the 32 bit computer (.sdf, .mdb, .accdb).The 'funny' thing is that if I establish the connection on the 32 bit and copy the program directory over to the 64 bit, the prorgam loads and seems to run fine. But the %$# _(%* Wizard will not run on the 64 bit machine. Runs fine on the 32 bit but not on the 64 bit. Of course I make sure that the db's are in the location where the program expects them to be when I run the program on the 64 bit machine.
One final thing, when I am in the progam created on the 32 bit and running on the 64 bit and I try Data->Add New Data Source->Database->Dataset only two of the three connections show up while all 3 show up on the 32 bit machine. Also the connection string is incorrect for the non-sdf connection. It should include
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Jun 21, 2011
I am not able to add records in an Access 2007 database using VB 2010 Express Edition. I have read other posts and followed them but still I am not sucessful. I have the connection to the access database as MS Access Database, therefore it has the OLEDB connection (not the Jet 4.0). I am using the project instance in binding the text boxes to the fieldnames in the Access database. Did I miss something? I am also using Windows Vista Ultimate.
Below is the code.
Private
Sub
cmd_Save_Click(ByVal
sender As
[code]....
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Jan 2, 2012
The project must have different user and each has username and password will be saved in my database but only the admin can add users.
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Feb 29, 2012
I am trying to make a user account SQL database work with Visual Basic 2008 Express for login purposes, i.e. usernames & passwords. Plan is to host this server so people can login to use the the application and verify they have a valid account. I would like to host all the account information in SQL due to the possiblity of hundreds of users at any given time. I also need the ability to add data to the database for users registering for the first time. The SQL server will need to be able to access the SQL Server databases remote via WAN.
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Feb 29, 2012
Here is the scoop: I am trying to make a user account SQL database work with Visual Basic 2008 Express for login purposes, i.e. usernames & passwords. Plan is to host this server so people can login to use the the application and verify they have a valid account. I would like to host all the account information in SQL due to the possiblity of hundreds of users at any given time. I also need the ability to add data to the database for users registering for the first time. The SQL server will need to be able to access the SQL Server databases remote via WAN.
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Dec 2, 2009
I am using Visual Basic 2008 Express Edition. Some of the programs I am writing make extensive use of External files (saved games, data, item lists, etc.) I could use an easy way to get these files to ride allong during deployment (cd mostly). adding them to the resources works for some static pictures, but custom structures into lists of info to read and write from are beond that features abilities, same with the settings feature. I have found in other help referance to "MageUI.exe" so is downloading a .net SDK my solution or is there a better trick I can use?
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Jun 16, 2011
I developed a windows application that uses a SQL Express database. I created a Setup project as well. When I install the application, the database is deployed with read only rights causing errors in the program. Of course, I manually change the rights to Full Control and the application works great. How do I get the database to deploy with Full Control?
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Feb 14, 2011
I'm trying to use LINQ to SQL in Visual Basic 2010 Express.
It allows me to create the .dbml file, but in order to drag items from the Database Explorer window to the design surface, I first have to get my database listed in the Database Explorer!(this is a remote SQL Server database - not a local .mdf)
I already have a good, working connection string to the remote SQL Server database, but that doesn't help me when I'm trying to generate the DBML at design time.
Can anyone tell me how to get my remote SQL Server database identified in the Database Explorere window? When I try the "Add Connection", I am limited to Access, SQL Server Compact, or SQL Server Database File. If I try to enter the IP address & port of my DB Host I get a 'database file does not exist' message. Doesn't seem to want to let me point to a remote DB server...
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Sep 30, 2010
Microsoft Access 2007 A Students.mdb database file Visual Basic 2008 Express Edition. I was informed that one can connect to Access files with ease from the Express Edition and most of the tutorials on the internet also show this however I am encountering a problem.
I open Visual Basic 2008 Express Edition Start a new project, with a form, and then click on the Data window, and add new data sources from the Data menu.
I click on database. The problem starts with the data connection. I click New Connection Change the Data Source from Microsoft SQL Server Compact 3.5 to Microsoft Access Database File and instead of then leading back to the other window (as happens on the tutorials for me to browse for the mdb file). Another window pops up asking me to Add a Connection.
It has the data source listed as Access and asks for a Connection String under the misc section. I type in
CODE:
When I click on Ok I get this error: Format of the initialization string does not conform to specification starting at index 0.
The Test connection button works and says connection success whether the Connection String field is empty or not but when I click OK it still gives me the same error. So I can't leave it blank either
So basically I can't connect to the Access database since I can't change the connection type and it won't just let me browse and add the file anyway.
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Apr 2, 2012
the problem is my sql statement returns no data even tho the record IS IN the access database. Below is my
If RB1.Checked = True Then
comm = New OleDbCommand("SELECT * FROM Recipes WHERE (RecipeNo = '" & TB1.Text & "')", con)
End If
If RB2.Checked = True Then
[code].....
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Jan 16, 2010
I'm trying to retrieve data from an Access database - a simple one. (Just a single table with one column) My task is to view these records through a 'ListView'. No need to manipulate or anything. Just to retrieve data with a simple SQL statement and display via a ListView.
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Apr 20, 2011
I grabbed some sample code to generate 100 comboboxes at runtime. The short version of the code is shown below, I left out all the combo box fortmatting and placement details...
Dim TB1 As New ComboBox()
for loop
TB1 = New ComboBox()
Me.Controls.Add(TB1)
end loop
it produces all the comboboxes and looks fine, but i cannot figure out how to reference an individual combobox. Are they in an array? How do you single out a single combo box, for example, how would I check the value of the 33rd combo box?
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Jun 20, 2009
I want to create a table (called "Customers") in a Microsoft Access database and then insert/delete records into the table and update the table. The table shall have 3 columns:
ID
Customer Name
Customer Address
I know i need to make the "ID" column as an autonumber and a primary key, as i need to insert and delete records and update the table. I am using the Visual basic 2008 Express edition and quite familar with the OledBcommand.
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Mar 3, 2008
I would like to access to a SQL Server Database from my Visual Studio project.
I have SQL Server 2005 Express Edition installed on my PC and I have a database with some tables.
In Visual Studio, I open the Database Explorer and I try to create a database connection.
The Add connection dialog box proposes to enter a database *file name* but I cannot select a database *server* and a database *name*.
Perhaps, is it a restriction because it is a free version ?
Within Visual Web Developer 2008 Express Edition, I can select a database *server* and a database *name* !
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Feb 19, 2009
I have th is little programm:
Dim dbOud As ADODB.Connection
Dim rsOud As ADODB.Recordset
Dim strCnnOud As String
[code]....
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Sep 5, 2011
I have written lots of code with the ADO Library in VB Excel and previous versions of Visual Basic. With the dissappearance of the recordset object, how do we perform data manipulation with an attached Access Database? It seems things could be a lot easier, and less complicated by now, however, the best methods appear to currently remain ellusive.
[Code]...
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Mar 28, 2011
I am working in Windows 7 Home Premium using MS-Visual Basic 2010 Express. I am having difficulty connecting to an Access 2007 database using ADO. When I try to connect to the database I get the following error:
Error Code: -2147467259
Exception: [Microsoft][ODBC Driver Manager] The specified DSN contains an architecture mismatch between the Driver and Application
Source: Microsoft OLE DB Provider for ODBC Drivers
I looked at...
[URL]
There were several reference to compiling the program using x86.
Go to Project menu -> Properties -> Compile tab -> Select "Advanced Compile Options" -> Select "x86" instead of "AnyCPU"
I followed the path and there was not any option to select x86 in VB 2010 Express.
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Sep 19, 2011
How do I implement the ExecuteScalar method to return the first element in a sorted dataset?
Here is my code:Imports System.Data.OleDb
Sub Dim oCmd As OleDbCommand
Dim strConn As String
Dim strQuery As String
strConn &= "Provider=Microsoft.Jet.OleDb.4.0;"
[Code]...
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Oct 28, 2011
I am trying to build a form that has a button on it that will open up a 2nd form that allows me to view and edit the connection string. I believe the connection string is also called app.config, and can see that in the Solution Explorer for the project.All I have managed to do is drag a button onto my main form and relabel it. I have no idea how to create code to access the connection string.
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Sep 21, 2011
i created a database in SQL Server Management Studio by use engine sql express how to add my database in my project in vb.net 2010
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Jun 22, 2010
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?
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Dec 12, 2010
I'm am trying to determine the total number of fields under a particular heading given that the other Heading's total number of fields are > or < than the heading in question. The query, shown first in the attached code, works well if there is one column in one database table, however it does not work well when there are a number of columns with a different number of fields respectively. The CategoriesID encompasses the entire tables contents.I devised a function to determine the total number of fields within a particular column and then attempted to incorporate this, without success, into the second query, shown in the code.
Private Sub GetRandomHeadingFields()
Dim varNumberHigh As Integer
varNumberHigh = TotalNumberofHeadingFields()
[code]....
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Mar 11, 2010
i am trying to read from access database and that work with data in a program. I used to work with VB from previous version and now it seems to me there are differencies. If someone can paste a working simple code.I would like to make a windows form aplication.
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Oct 17, 2010
I am creating a drawing manager, to be run inside 64-bit AutoCAD. From what I have read, there is no 64-bit version of the msjet40.I thought was going to be successful was to build the class as a 32-bit, but I still get the error. is there a way that I can read an access database from withing a 64-bit app?
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Aug 20, 2011
I reproduced the following code to update a database and I get the error" Operation must use a updateable query"
[Code]...
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Mar 14, 2011
I made an input form that I want to work like a daily diary. The user inputs a title, date, time, and the actual text entry. At the end is a button and I think I have to make a click "event" to make all the text from the input boxes get stored somewhere. I want each of these submissions to be separate for each day with the capability of showing the journal entry for each day later on.
I am a novice, but I think the data needs to go to a database. Cannot find any sample code to make the form data save to a database. The database I made is "a local database." Not sure if it needs to be "Dataset" or "Entity Data Model".
Please show me some code for this or a way to save information without a database only using vb code.
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Jun 21, 2010
I have found a tutorial that will teach me how to set up my first Database, but the first thing it tells me to do is right-click on the Data Connections Icon within Database Explorer and choose "Create New SQL Server Database" ... unfortunately, this option is greyed out, so I am assuming I have to choose "Add Connection" first ...[code]...
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Nov 5, 2011
My Australian dates (dd/mm/yyyy) are being converted to U.S. date format (mm/dd/yyyy) despite using custom date specifier for Access table fields.Allen Lamb
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