with two fields each and write the results to a third Access database as part of a data mining program with finance applications.Here is the code in question:
Imports System.Data.OleDb
Partial Class Form1
Dim DMDatabase01 As OleDbConnection = New
[code].....
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.
View 2 Replies(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:
Getting this error message and can't seem to figure it out.I have checked and the database iS CLOSED from all possible angles.
rivate Sub Form2_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
ref()
[code]....
how do i open any access database in visual basic? the code will be general as i will not know the actual filepath of the database itself
View 3 RepliesI created access database while runtime. Now I want to know how to set a time format in that created date/time field. I need to set as Short time for that field.
View 6 RepliesI would like to update an Access database at a particular time.For example:I have a startdatetime = 11/08/2011 8:00 AM.I want to update the database when DateTime.Now = Startdatetime.AddMinutes(30)I thought about using a Timer, but i am not sure how to update the database when the timer stops.Note: This statement will be in a loop, because I will be updating e.g For i = 1 to n
View 2 Repliesi use this command to open my ms access database file, but it is not working, what is the problem.... i learn this command from internet tutorials. [code]
View 3 RepliesI am using ms access 2003 as my database in vb.net,i want to secure it with a password. what should i add to my code to open my DB?
Public con As New OleDb.OleDbConnection("Provider=Microsoft.jet.OLEDB.4.0;Data Source=C:\jada\Database\jadaDB.mdb")
I want to open an accessdatabase in vb.net with a click of a button.I found this example code at the microsoft site.[code]I've added it to my project, but it gives an error that the type 'Access.application is not defined'.
View 1 RepliesA. A Visual Basic program is developed to read a text file to Access 2003 database using the Data Access Objects (DAO). The following is the DAO command:
Set db = DAO.DBEngine(0).OpenDatabase("C:TempMyAccess2003.mdb")
B. The office Access 2003 database (*.mdb) is going to be upgraded to Access 2007 database (*.accdb).
C. The Visual Basic program is revised to read the same text file to Access 2007 database using the same Data Access Objects (DAO), The following is the DAO command:
Set db = DAO.DBEngine(0).OpenDatabase("C:TempMyAccess2007.accdb")
D. The following error message occurs when the revised Visual Basic program is executed:
"Run-time error '3343': Unrecognized database format"
I had previously used VB6; I am now using VS2008; What is the best manner to now open the database using the VB code? The code works with the Access 2003 database.
I'm creating a database backup function into by program which will allow the user to locally backup a database to the selected folder. How do I go about doing this? I realise you cant copy an open database, but I cant think of any other way to do it.
View 1 RepliesI'm using ASP.NET/VB and I'm trying to insert a date and time into an Access date/time field, but I'm getting an error (Data type mismatch in criteria expression). Here's a simplified version of my code:
Dim myDate As Date = Now()
Dim myIns1 As New OleDbCommand("INSERT INTO tableCourse (date_submitted) VALUES (?)", myConn)
myIns1.Parameters.AddWithValue("@myDate", myDate)
myIns1.ExecuteNonQuery()
Not sure why I'm getting the error, and not quite sure if this is even the correct way to approach inserting the current date. From looking at other similar questions it appears there are a few different ways to do this, but my technical knowledge is kind of limited so I'm having a hard time figuring it out (in other words deciphering the answers that use technical terms I know nothing about).
Dim purchasedatetime As Date = Now
chasedatetime2 = purchasedatetime.AddSeconds(50)
Dim subtotal As String
[code].....
I need a way to store just the time only to my access database. the datetimepicker isn't working because there is no way to have a null date.I found this and it seems to be exactly what I need.When I try to convert it to vb2008 i get a few errors I can't figure out.
View 8 RepliesI have an app with a password protected MS access database connected to it. lets say the password is "123".
when I run my app i get an error saying that the password is incorrect even thought its not.i have been readig around but am strugling to find a solution.
this is the line that causes the error:
Me.Table1TableAdapter.Fill(Me.PassSafeMianDataSet.Table1)
I can't open an Access database on a mapped drive. However it works if I use the UNC path. how I can get this to work? See the code below for an example of what works and what doesn't...
Code:
mConnString = "provider=Microsoft.Jet.OLEDB.4.0;Data Source=\tiger-2000dvb_mt7MTrackBE.mdb" ' This works
mConnString = "provider=Microsoft.Jet.OLEDB.4.0;Data Source=T:vb_mt7MTrackBE.mdb" ' this does not work
Dim objConn As New OleDbConnection(mConnString)
[code].....
The error message I receive is...'T:vb_mt7MTrackBE.mdb' is not a valid path. Make sure that the path name is spelled correctly and that you are connected to the server on which the file resides.I've done the obvious and verified that t:vb_mt7MtrackBE.mdb is a valid path.
I've been working on an application for awhile that, basically, allows the viewing and printing of a maintenance database. It allows the user to view basic information for the object and then view the maintenance history. My approach for the maintenance history is simply to have unique tables per object since a history has to be kept for each, however, I'm running into a problem in the application that allows the user to view the general information from one DB and the Maintenance history from the other DB.
Say you have Object ID BG1. I can enter the object ID into a search field, pull the data from the general DB and display the data, but I also need it to pull the information from the maintenance history and display. If maintenance history for this object is not found, then create a new table within the DB, fill the columns with the required fields and allow for the user to edit the history.
Open a Access database (protected with a password) in my application in Visual Basic 2008. I use Oledb connection to link my Application to the database. When my Access database is not protected with password my connection goes well, but I don't know how to set my password of my database in my application. I have "googled", but I can't find something that works for me. [code]----
View 3 RepliesHow open password protected MS access database in MS access environment from vb 2005 code
View 1 Replieshow to open password protected MS Access database using vb.net windows application?
View 2 RepliesI have an access 2007 database that I have been developing a front end for in vb.NET for the past 3-4 weeks using vs2008 in a Windows 7 enviroment. Yesterday I started getting an error of "Your network access was interrupted. To continue close the database and then open it again." This happens in the Form Load on the line:
gotData = Me.LeaguesTableAdapter.Fill(Me.LeaguesSeasonsPlayersDataSet.Leagues)
I can go into access 2007 and view all the data fine and in vs2008 I can view the server explorer and browse the tables. However, under data sources if I try and preview the data, I get the same error message as before. What confuses me the most is that the database is not stored on a server is just stored in My Documents. It was origionally stored on my desktop pc but has been copied to the My Documents on my laptop. But as I mentioned previously it has been working fine and has just all of a sudden started throwing this exception by my Try Catch routine. FYI I have tried creating a new DB and importing the tables from the old DB but this hasn't solved the problem either.
I am developing application using VB 2010 in v studio 2010 environment running win 7 home. I am using nwind.mdb ms access db which is sitting in c:xyzlocaldata folder and is linked with application, i can run query and retrieve/preview data with no problem. When i run application, i get run time error >>Could not find file C:xyzlocaldatainx86Debugwind.mdb. I copied a copy of access db to this folder, i don't get error message. However fly time transaction data are updated in access db sitting underC:xyzlocaldatainx86Debugind.mdb folder not under c:xyzlocaldata folder.I have all reports and queries linked to access db sitting under c:xyzlocaldata folder, process transactions are not reflected in this folder access db.Transactions are updated
View 2 RepliesWhen using SQL connections in my program, will I have to open and close the connection and the data reader each time I want to access the database ?
[code]...
I have a VB6 application which has been running succesfully for years under XP, however under Vista data loss has been observed.It appears that if the app is run 'as administrator' then it connects to the correct database file, however if the app. is not run as administrator then vista creates a copy of the database (no idea where) - hence I end up with 2 versions of the database.
In fact I can delete the database file entirely and the app. still works fine because vista is using it's own copy - the problem is how do I back up this 'vista copy' when I can't find it (search doesn't find it).
This is probably a pretty novice design question. I'm trying to work my way through a number of requirements and give the users the experience they're looking for.I've written a tool that does big calcluation-type things. It currently consists of a class library and command line tool (separate .NET projects.) We're using an Access database format as the file type because it can keep all the various tables together in one file. A few other items about the application: There are not many users. There are no concerns with scalability. There are not great concerns with updates. Desktop is desired. Not web.Using VB and .NET 3.5 SP1
I now need to develop a GUI front end that will allow typical File/Open and File/Save type operations.Users expect that they can open a file, edit it some, then either choose to save it or close it unsaved without any changes being written back to the file. Saving it would obviously save all changes affecting all tables back to the file.
Does it then make sense to use a temp file for something like a proxy then? To, when a user "opens" a file, copy the source Access file to a local temp file and then use that for the editing session? Then, if the user "saves", copy the local temp file back to the source path?
Update: [tagged with ms-access tag too] Also, I omitted the fact that users would expect typical File / Save As functionality too. I think the design I've put in question in this post is what is traditionally called the Proxy design pattern. Has anyone tried this (successfully!) with Access database files before? Words of caution or advice?
In my program, I have a timer with a inteval set to 1000ms. The timer is executing a MySQL-command, and right now I'm opening and closing the connection each time.
View 5 Repliesdim cn as oledbconnection
cn = New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:valid.mdb")
[code]......
What I am trying to do basically is open an access query in a datagrid view and then be able to make changes to the datagrid and then save it back to the database.When I try to save:
Me.BindingSource.EndEdit()
Me.TableAdapter.Update(DataSet)
It says that update is not a member of the tableadapter... Why is that?
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 Replies