This may seem like a simple problem, but I am completely baffled. I am working on a timekeeping application using Visual Basic 2008 Express and Access 2000.
There are three tables being updated by three separate sub routines. Two work fine, one does not.
In trying to resolve the issue I test one field at a time. The test Access query and the code only reference the one field to change and two ID fields. The program runs but the field is not updated. The table has 42 fields to be updated when I get it working.
The Access query is:
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UPDATE tPPSummary SET W1MonHours = [@W1MonHours]
WHERE EmployeeID=[@EmployeeID] AND PPID=[@PPID];
[Code]....
When I pause the running program at the intRowsAffected it shows 1 record which is correct.
I am really out of options as tho where to go from here. There are no simple spelling errors in the parameters, there are no error messages and the sub runs to the end.
I am trying to update one table with results from another table as such: Table A (field, type) : Table B ID (key) Integer : ID (key) Integer ParentID Integer : IssueID Integer Number String : ParentID Integer : Number String
I need to construct and UPDATE statement that does: Sets B.IssueID = A.ID When B.ParentID = A.ParentID AND B.Number = A.Number AND B.IssueID = 0
Here is what I have so far but it is producing an SQL syntax error (missing operator) sqlStr = "UPDATE B SET IssueID = A.id FROM B JOIN A ON (B.ParentID = A.ParentID AND B.Number = A.Number) WHERE B.IssueID = 0
I have also tried sqlStr = "UPDATE B SET IssueID = A.id FROM B, A WHERE (B.ParentID = A.ParentID AND B.Number = A.Number AND B.IssueID = 0)
I'm currently looking to add a code where, when executed, finds the appropriate value (searches for it), then on the same line, but in a different category, changes the text to 'YES'.
I have a datagrid that is loaded from a data source called ManualKanbanDataSet. The Access DB is ManualKanban, the table is "Parts". I've set the column properties of the column I want to change to readonly=false.
I make changes to the data in the datagrid, click my update button and nothing updates. here is the update
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click Try Me.Validate()
I am getting a System.Data.InvalidConstraintException" ForeignKeyConstraint CompanyPasswords requires the child key values(-1) to exist in the parent Table. When saving updates to the parent and child tables.My parent table consists of 3 columnsCompanyID (auto increment, pk)Company NameURLMy Child table consists of 4 columns PasswordID (auto increment, pk)CompanyID (fk)User NamePasswordHere is all the code on the form
This is probably a simple process but I can't seem to accomplish it for the life of me. What I'm trying to do is transfer user inputted data from a Visual Basic text box into an Access database. The database consists of only one table with three fields: First Name, Last Name, and ID Number (auto-increment primary key). The VB code I have so far is this:
Public Class Form1 Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
There are two combo boxes taking user's inputs to return a record in an Access Database satisfying the requirements. This procedure is controlled by a button. However, when it reads "da.Fill(dt, "NETP_ParaList")". It reports error saying that "ArgumentException was unhandled; Object is not an ADODB.RecordSet or an ADODB.Record. Parameter name: adodb" I have no idea what this talking about.
I would like to know the best, or standard, way to accomplish real-time client updates in a small multi-user application using an access data table as a data source.Specifically, this application will be used by 3-4 people. It uses a datatable which is filled on form load and bound to a datagrid at design time. The datatable is stored on a shared drive. The data table on the shared drive is updated in two ways:
1) Users can update the datagrid which then updates the datatable on the shared drive via the data adapter's Update method.
2) A server application does some work on some text files, periodically updating the data table.
I need the clients to reflect the changes to the data table on the shared drive as closely to real-time as possible. I know that the data table stored in memory on the client is disconnected from the data table on the shared drive, so I must query again to get the updates.
1) Is there an alternvative model I can use which is connected, and which will automatically reflect the updates in the data table on the shared drive?
2) If not, what is the best way to check for changes in the data table (so I can know when to call the data adapter fill method)? I am planning to poll the drive for a change to the .mdb file, raise an event and then fill the data adapter when the event is triggered. I am using this method successfully now to check for changes to a text file in another application, and I know how to implement it?
I have a piece of code that is suppose to update the password field when the user wants to change password but I get an error line: An unhandled exception of type 'System.Data.OleDb.OleDbException' occurred in system.data.dll error line: cmd.ExecuteNonQuery()
If BindingContext(ds, "login").Position < 0 Then MsgBox("Database Is Empty !", MsgBoxStyle.Information, "Records Management System") Exit Sub End If If ComboBox1.Text = "" Then [Code] .....
I'm trying to remember how to insert data in to a table. Here is my code
Code:
I get the error
Quote:
Number of query values and destination fields are not the same.
I also get some error about the Insert INTO part not being right somewhere. Am I doing this how you would do it, or how would you do something like this?
I have a table in Access called 'tblRealTime' with a few rows of data and I want to display it in a DataGridView object on my form. When I run the program I get no errors but nothing shows up in the datagrid. My code is below:
[ Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load ConnString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=|DataDirectory|K0201227Project.accdb;Persist Security Info=False;" SQLStr = "SELECT * FROM tblRealTime"
I have a table I made in MS Access and I want to import/display that table into a DataGridView.I am VERY amateur but I am able to pick apart some code and see what is happening.The thing I know I need is a connection between the two programs but again, have no idea about how to pull it off.I have the free version of VB(2008 Express Edition)
I am an old VB2 programmer and in the process of moving up. In VB2 I could obtain a data row via and index on an access table. I can not find an example on how to do this. I can retrieve a single row using a query, but an index would be faster. I know in Oracle use can use a hirt to direct the query to use the index.Here is what I was during in VB2 (Sample) with no hint.
Set Stock_Tbl = "DataBaseName".openTable(Stock_Tbl_Name) Stock_Tbl.Index="Symbol_Idx" Stock.Tbl.Seek="MSFT"
I'm looking for some simple code that lets me create a Microsoft Access table via code.Currently all I do in Access is write and retrieve data from specific tables but now I want to be able to create them at runtime. Here is an example of the code I use to load some data just so you can get a feel of what I'm currently doing. Hopefully there is an easy way using the same rough way that I'm currently dealing with databases.
Code: Public Sub LoadCareer() Public rs As New ADO
I have 2 databases that I am working with. One is a compant customer database and the other is my personal call log. Now I am creating a front end for the Call Log. I was updating my customer list by Importing 2 tables from the customer database, a series of queries would erase all of my info, take all the data from the imported tables and move it into mine then erase the imported tables.
Im trying to accomplish the same in my VB frontend. I can connect and fill datasets from the customer database. I can erase my tables. How do I take all of this data from the newly created dataset and move it over to my empty tables?
I am attempting to modify DBaseIV files using ADO in .NET I am able to open and read the data with no problem but everything is showing as read only and there is no way (at least that I can find) to perform Updates/Inserts/Deletes to the underlying Database table.
There seems to be almost no documentation that I have been able to find dealing with DBASE files. I have found a few references that BDE (Bordland Database Engine) needs to be installed and used for changing DBASE database files. However, it appears that BDE must be purchased. I found one reference that indicated ADO Jet 3.5 would work but 4.0 would not. Then I found another that said 4.0 had been updated to include Update/Insert/delete SQL interfaces.
Can anyone point me in the right direction for being able to modify a DBASE IV database table using ADO (or some other method within .NET) It is currently not possible to change from DBASE to another database structure this may be coming in the next year or so but will still need to perform modification to DBASE files for the forseable future.
I am using Visual Basic 2008 Express edition along with mysql manager 2008.I have made a bank database and am looking to add a feature to update the balances of customers (individually) when i withdrawl or add money.The code i am using currently is
Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click Me.Validate() Me.StudentBindingSource.EndEdit()
[code]....
This is the same function as the Save record but, i want to be able to enter a value into a text box and then click the button to update the balance.
I am attempting to run an update query on a Microsoft Access Database File and am not having any luck with the update. It appears to update the RecordSet but not the actual Access Database (when I run the following code, close the debug window, then re-open it a field referring to the Count_Value column reflects the update). I am using Microsoft Visual Basic 2008 Express to work with this code, if that is of any interest. If you could look through the code below and see what is causing the RecordSet to update but not the actut
Code: Dim strDBpath As String strDBpath = Application.StartupPath & "CourseData.mdb"
I am writing a simple app using Visual Basic 2008 Pro, and SQL Server 2005 as the backend. However, I copied the database file (.mdf) from another computer onto my laptop. I added it as a Data Source by having the Data Provider as "Microsoft SQL Server Database File" and have it attach the file to the local SQL server. However, it isn't set to copy the database to the output directory every time the program is run for debugging, as I thought that would save time.
Now however, the data update to the database are very wierd. I run the program, add some new data, save it, and it returns the new primary keys properly (that is, it turns from -1 to 4 or 5 or whatever, indicating that the data has been saved). When I close and re-run the application to check that the data has indeed been saved, it reflects the changes and shows me the new data. However, when the program is run again after some time, the changes I made are gone. I'm assuming this is due to some wierd way in which VB is updating the database that temporarily updates its cached or copied database, but doesn't actually change the real database. How do I fix this? I had previously done the same project on another computer, except there the data source was directly the local SQL server, and I had created the database directly on the server through Visual Studio itself, and I didn't face those problems then. Is there any way to manually attach the SQL Server database file (.mdf) to the local SQL server instance permanently, and change the app to use the attached database instead?
I have a code made in Visual.net 2005, and I have a problem. I have an excel file where I store records. I can read this records without problem, but when I want to make a modification I get the ERROR :
"Current Recordset does not support updating. This may be a limitation of the provider, or of the selected locktype"I hope you can help me, I know that by default the file is open as readonly, but I dont know where do I have to specify the opposite.
I have a datagrid that I use to display data from a SQL 2000 table. I am trying to write back any changes the user makes to the datagrid data back to the original table but don't know the proper method to do this.
I'm using an access database in a program that I'm making for my school, the user is able to select an item from the menu, then it sends it to a list box, there is also a textbox to put a quantity of how much of the item you want. I have a field in my database called Amout Ordered, I want to update it with the amount of each item ordered, and I can't figure out how.
Alright, let's try this again. I have an mdb file as a database in my program, I need this mdb file to be what my published program reads off of. Is there any way to have Visual Basic (2008 Express) not encode my mdb file to Example.mdb.deploy?
I have a storedProcedure that populates a dataset, this dataset is then used for a dataSource for a third party grid control. This all works fine, however I am having real trouble in updating the dataSet with the most recent data from my database.Below is the code that I am using to populate the dataSet:
[code]...
I am not sure how to update the dataSet with new data so that my grid control displays the most recent data. Could someone show me the code to do this?
