I am an old mainframe programmer and have started learning VB and find it a whole new world. I am not able to get my example code to work to access an Access database through automation. I might not have the correct Jet 4.0 engine. The specs I have are: MSJet40.dll, Dated 7/13/2009, Prod Ver 4.00.9756.0.
View 2 RepliesI have a similar problem posted in the forum similar to this : started learning VB. I am not able to get my example code to work to access an Access database through automation. The author of my book suggested that I might not have the correct Jet 4.0 engine. The specs I have are: MSJet40.dll, Dated 7/14/2009, Prod Ver 4.00.9756.0.
View 3 RepliesI have a program in VB.NET 2005. At some point I have to open an Access2003-Application for getting data in it. I do that by pretending my program is a human user and let it do all the work in Access as a human user would do. Filling Fields, pressing buttons etc. I use the Primary Interop Assemblies for that. So far so good. That code is in use for over half a year now. In the last week I got Office 2007 installed on my machine. Of course I tested the installed version of my program if everthing still works. Every test was succesfull. But if I do the same tests in Visual Studio it always crashes.
All I get is this Errormessage: {"Das COM-Objekt des Typs "Microsoft.Office.Interop.Access.FormClass" kann nicht in den Schnittstellentyp "Microsoft.Office.Interop.Access._Form3" umgewandelt werden. Dieser Vorgang konnte nicht durchgefhrt werden, da der QueryInterface-Aufruf an die COM-Komponente fr die Schnittstelle mit der IID "{66B22FB4-F70E-4F03-A00A-F76E9ADBBF10}" aufgrund des folgenden Fehlers nicht durchgefhrt werden konnte: Schnittstelle nicht untersttzt (Ausnahme von HRESULT: 0x80004002 (E_NOINTERFACE))."}
For all who can't read german:
"Microsoft.Office.Interop.Access.FormClass" can't be converted in to "Microsoft.Office.Interop.Access._Form3" ... Interface is not supported.
Code I use:
Dim access As Microsoft.Office.Interop.Access.Application = Nothing
.
.
.
access = New Microsoft.Office.Interop.Access.Application()
[CODE]...
The Error occurs when I try to access any property of "access.Forms("frmTest")"
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.
View 5 RepliesI 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.
View 2 RepliesI have a VB.Net windows application which needs to modify a MS Access database availabe in server. The login user does not have permission to the folder where the database is available. So I am using windows impersonation with another user's credentials to access to that folder.This works fine and I am able to create a new text file in that folder. But when I try to access the database try to get a dataset from the database, it gives "unspecified error". When I check in the internet some people say that there could be problem with temporary files that OleDB tries to create.
View 2 RepliesI'm using Access 2010 for 2 small databases for a windows forms desktop application.on Form 1, my datagridview updates Paccounts.mdb correctly as follows:
end_OK:
Try
Me
.PaccountsTableAdapter.Update(PaccountsDataSet.Paccounts)
[code]....
Windows form application Access database Is it best practice to restrict user entry via keypress event
then validate all info entered & show error control message
or use dataset partial class columnchange as cannot restrict user entry here Could an experienced programmer suggest best way i actually prefer restricting keypress then loop through and validate all entrys
but want to be right
My windows application was written in vb.net and i recently added a web service to it so that I could place the access database in it and connect to it via the web server. I've been succesful in receiving data when doing select statements; however, I'm stuck when trying to do a simple insert statement to it.
[Code]....
The problem has been simplified for the purpose of clarity. I want to make a windows form application that uses an access database. The application will store the list of person's basic details such as name, age and country. The database contains two related tables ie person(id, name, age, country_id) and country(id, country_name) My windows form contains TextBox, DateTimePicker, ComboBox for Name, Age and Country respectively. Now I want to make CRUD operation Programmatically (Not using Visual tools) in the same form with some navigation buttons.
View 1 RepliesI want to access the Windows mobile SQLCE database from the desktop application when device is connected to my PC.
View 1 RepliesI have a VB.Net program which reads and writes to an Access database. I am trying to deploy the program using a setup (created with INNO Setup). Upon installation on a Windows 7 computer, Windows 7 is preventing it from writing data without changing the permission settings. It reads data but it doesn't write data. This problem doesn't happen in Windows XP. My question is: is there any way to make the Visual Basic .Net program write data to an Access database on Windows 7 from the setup without the user having to change permission settings?
View 12 RepliesI have written a simple VB.NET program that connects to a MS Access Database. This program runs in Windows 7 XP Mode, but does not run properly in straight Windows 7. Somehow, the Windows 7 does not connect properly or read the MS Access database data properly with the DataAdapter.Fill method. I have dual monitors, so I can run the identical program side by side (one in Windows 7 and the other in XP Mode) - one works and the other doesn't (it doesn't crash, it just get "nothing" from the database when accessing - acts like it's not connected). Has anyone else run into this, or similar, problem with VB.NET and MS Access connectivity?
View 14 RepliesAny examples of of windows forms that interact with access databases in vb.net. What I creating is a form where you can enter data to a database and delete if need be. But display the contents of a database in a table or tree.
View 2 RepliesI'm having problem with our germany customers whose operating system uses dot as thousand separator and comma as decimal point.I have an application which reads some text from an Access database, parse it into data and display on a datagridview,the program also needs to write the data into another file as input to another application. right now, it seems when my application parses doubles (say 0.2500),germany os will always return everything except the decimal dot(so 0.2500 becomes 2500),and that just messed up the whole process...so my question is, how can we detect the locale of the windows and parse the doubles correctly?
how to open password protected MS Access database using vb.net windows application?
View 2 RepliesWith the following code i am able to update record in the first row. Can some tell me what i have to replace in this code to update a record for a selected row. I have a field "Sr_No" with primary key.[code]...
View 2 RepliesI'm working on a simple data logging program, and I have little to no database experience. I wrote a little VB forms app to log the data to ms access and then graph the data, but I'm having trouble with adding records to the database. First, I created a simple one table database in access. Then, I added the database to the project as a data source, and gave it a data set using the wizard. Right now my code looks like this:
[Code]...
There are no problems during build or run time, but I do not see changes to database after the program runs.
I have two Access database, say database One.mdb and Two.mdb. I want to use VB2005 to export tblCustomer from One.mdb to Two.mdb, and replace the existing tblCustomer in Two.mdb, during run time. I basically want to simulate the export function that is available in MS Access (which can export one table from one Access database to another) with VB2005 during run time. I can think of a way by querying the table to a dataset and then delete everything on the other database before filling the table in that database with the dataset
View 1 RepliesI 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?
View 4 RepliesI am developing an application using visual basic 2010. I need my program to link to an existing MS Access 2003 database to execute a pre-defined query etc. I have read article Q317113 - How to automate microsoft access from visual basic .net. However the examples etc to not work in vb2010.
View 9 RepliesI'm writing an asp.net page with a simple registration form that connects to my access database and inserts the values in the table. So I have my database, my registration page, everything looks fine in my code, but there's a syntax error I can't seem to figure out. When I go on my webpage and click submit, it says : Syntax error in INSERT INTO instruction.
Here's my code:
<%@Page language="vb" explicit="true" debug="true"%>
<%@Import Namespace="System.Data"%>
<%@Import Namespace="System.Data.OleDb"%>
[CODE]...
I am using the code shown below to compare two Access databases with two fields each and write the results to a third Access database. I am getting an error at the "Do While DMReader02.Read = True" line: "Invalid attempt to call Read when reader is closed." Why would the reader be closed at this point if I am using different DataReaders in the two loops?
Imports System.Data.OleDb
Partial
Class Form1
[code]....
I'm using VS 2010, and I did a project using VB and a database in Access. The problem is that when I try to put that "application" on other computers, sometimes, is not working. I thought it can be because on these computers they don't have access, but on one computer, is running another app which is using Access and there is no Access installed. How can I check if my application requires Access to be installed or not?
Here is a example of how I did the connection:
Public AccessOLEDBConnString= "Provider=Microsoft.Jet.OLEDB.4.0; Data Source=" & myfullpath & ";Jet OLEDB:Database Password=password"
Function getConnection() As OleDb.OleDbConnection
[CODE]...
And when I want to have access at the data I'm doing like this:
dim conn as Oledb.OledbConnection
dim sql as string
dim ds as Dataset
[CODE]...
I have been going around and around about this and just can't seem to find the answer. I have an Access 2007 DB with 3 Tables I pull data from the first (STUDLIST) table to my form, I then pull data from the second(EQUIPINV) Table
complete my form, I now want to take my form data and create a new row in my third table(SignedOutEquipment)....(Yes I know that is duplicating data but overall it rally is not, there are reasons to do it this way) but this is where I am having my problem, My code runs with no errors and tells me it added a record but when I check my access DB there is no new record.
I am using visual Studio 2008 Express and access 2007[CODE...]
(using VB2008) I am trying to automate Access from VB.Net. To do this, I added two libraries to my project, Microsoft.Office Interop.Access v12.0.0.0, and dao v10.0.4504.0. This seems to give me all the necessary commands, yet when I tried to open up an Access database via the following code:
CODE:
I have two Access database, say database One.mdb and Two.mdb. I want to use VB2005 to export tblCustomer from One.mdb to Two.mdb, and replace the existing tblCustomer in Two.mdb, during run time. I basically want to simulate the export function that is available in MS Access (which can export one table from one Access database to another) with VB2005 during run time. I can think of a way by querying the table to a dataset and then delete everything on the other database before filling the table in that database with the dataset. However, there should be something simpler and faster than that, shouldn't it? Any idea?
View 6 RepliesI have this problem, I can create a setup for my app/database but everyone can open the backend file which is an MS Access database. I want it so we can only access the database using the frontend app.
View 2 RepliesI coded a program to access a Microsoft Access 2010 database. The program is written using Microsoft Visual Studio 2010. I get the error message that the database I'm trying to access is in an invalid format. look at the code below to see what I missed. The error is in the datasource statement.
[Code]...
I am using MS Access -2007 on windows server -2003. on my one of the query I get "Internal OLE automation error" after it runs. It shows data for a moment then data gets deleted from query when I hit OK button on Internal OLE automation error.
SELECT Qry_SNew.*, IIf([Qry_SNew].[Score1]>3.5,99.9663, IIf([Qry_SNew].[Score1] < -3.5 , 0.03369,[Tbl_percent].[Percentile])) AS Percentile1
FROM Qry_SNew LEFT JOIN Tbl_percent ON Qry_SNew.Score1 = [Tbl_percent].score;