im added a dataset inside my project, and inside the dataset i added a DataAdapter with the steps like below:Use SQLStatement --> select A,B from tb_example --> Fill a datatable.And then i bind one of my combobox datasource's display member = Avalue member = BAnd its work properly!After few weeks, im reopen the project and i try to add another new dataadapter in the previous dataset and a new combobox like steps i did before. When i come to the combobox and try to find the datasource in combobox's properties and i cant find the dataadapter i jz added.
im having some problems using the data adapter. i tried a statement select 1'test' but when i do adapter.Fill(dataset, "tbl1") and tried to read the value from the first row in tbl1.hen i do row(0) i can retrieve the value. However if i do it by the name like sayrow("test") and i would get a dbnull.
i am trying to update database with updated data in data adapter. here is error message. "Update requires a valid UpdateCommand when passed DataRow collection with modified rows." here is my code.i get this error when i try to update dataadapter with following line.
In Microsoft Visual Basic 2005 Express Edition Version 8.0.50727.42 (RTM.050727-4200) and Microsoft .NET Framework Version 2.0.50727.
Right Click Toolbox--Choose Item--.NET Framework Components--Check on OracleConnection and OracleDataAdapter--Ok
Now double click OracleDataAdapter1 in the toolbox.Data Adapter Configure Wizard appears. Click on New connection.Add Connection dialoge box appears.Click on change.Change Data Source dialogue box appears.Here i am getting only 2 items:
1.Microsoft Access Database File 2.Microsoft SQL Server Database File
And in Data Provider combo box; only ".Net Framework Data Provider for SQL Server".I am not able to configure my OracleDataAdapter1 control by choosing above method.Machine have Oracle 10G Client and Server well installed. I am able to use Dim oda As New System.Data.OracleClient.OracleDataAdapter() and it is working fine; but i wish to configure oracledataadapter by using above method. Moreover, it is possible for me to configure oracledataadapter in Web Developer 2005 by above metohd, but not in VB.NET.
I am wanting to use the TableAdapers and/or DataAdapters that are stored in an XSD file ("A DataSet for using data in your application") to
1) delete data from SQL Server
2) insert data from a dataset to SQL Server.
the XSD is to be stored as a file outside of the application so that the same code (this code i am having difficulty with) can be used to upload data from different excel files.
I created the XSD file in VS 2005 and "Configured" each table adapter to generate: Select statement, Update statement, Delete statement, table mapping, Fill method, Get method, and update method.
I am searching for some generic code that will execute the update statement and populate the database with the data in the data set.
How do i retrieve the TableAdapter and DataAdapter information from dsXSD (or the file dsLoadData.xsd)?
And then use the data, especially if relationships exist between tables defining a specific order for the tables to be loaded...
Do the SQL Statement need to be dynamically (at run time) written?[code]...
i want to create a table that include a current year data and as well as previous data to be compare. here is the example of the table that i want to create: but i want to compare one of the annual data with the previous year. as example i want to compare between the data of current AR of 2007 with the current AR for 2006, Current AR of 2006 with current AR for 2005 and go on~, but i have no idea how to do it.
I populate a datatable using a dataadapter. the select query pulls data from a view in which I combine multiple tables. Now I need to run different update statement etc to update each table. foe example I will update balance field in the accounts table using one query and another to update days present etc.
how should i do this? must i loop through each row in my datagridview?
i need expert opinion on saving data to database though efficient method/professional approach.I'm saving data using following code.[code]There are some other ways like, use Insert query, i want to know does above mentioned method take too much resources, or make db unnecessary busy
I am having an issue on the listbox when the new data value equal to previous data then = to "0". However, I want if the new data value( A ) is equal to the previous data( B ) then ( A ) equal to ( B ).
Delegate Sub ListBoxUpdater(ByRef listbox As ListBox, ByRef str As Object) Private Sub OnQuoteUpdate(ByRef QuoteUpdate As LingLib.structQuoteUpdate) UpdateListBox(lbBox, QuoteUpdate.tQuote) End Sub
[code]....
My problem is when the new data comes out from the API, if it is equal to the previous data and it will appear 0. But what i want is the new data comes out is 0 and it will equal to previous data. e.g: first data comes out is 12.00, in above case, if the second data comes out is 12.00 but it will shows 0 which means unchanged. But in my case now, i want if the first data come out is 12.00, then if the next data is unchanged (0) and it will appear 12.00 and so on.
I am currently working on a API. I am having an issue on the listbox when the new data value equal to previous data then = to "0". However, I want if the new data value( A ) is equal to the previous data( B ) then ( A ) equal to ( B ).
Private Sub UpdateListBox(ByRef listbox As ListBox, ByRef str As Object) If (listbox.InvokeRequired) Then Me.BeginInvoke(New ListBoxUpdater(AddressOf UpdateListBox), listbox, str)
When i run this app., it shows all the data from my sql db now. How can I only need the previous 20 days data show from the sql db to the following ListView.
I have 2 applications that collect data every 5 minutes and imports that data into a SQL Server 2005 table. Every so often the location that I'm quering to get the data hasn't updated thier values so the application is trying to insert duplicate data into the database table. Because I have Primary Keys set on 2 of the 3 columns the insert fails which of course causes an error in my application.What I am needing to do is if it runs into a duplicate insert wait 1 minute or so and then retry running the download data Sub.Each sub calls the next sub in the process line.
I am a freshman by using vb and I had search several website to learn the method to display the previous saved data in a label but none of it is related to my problem.
I have this code I use on my form which has worked fine up until now I need to add another form to my project but the text from form 1 gets overwritten when form 2 gets added How can I append my data without overwriting the previous form.
Dim sfd As New SaveFileDialog sfd.Filter = "Text files (*.txt)|*.txt|All files (*.*)|*.*" sfd.ShowDialog() Dim writer As New System.IO.StreamWriter(sfd.FileName) writer.Write(RichTextBox1.Text [Code] .....
I know its .net but i am still using ADODB this is just a sample table, not really what i am doing..I want to take a look at a bunch of records until the customer changes. then i want to have the previous recordset data displayed or passed off to another function how do i set RS2=RS but when i "movenext" RS RS2 still holds the previous record data? [code]
What I want to happen is that the button from my system will remove the previous data from database and then insert new data to database from text file. Im done with inserting new data. The thing is that I dont how to control or where to put the Delete Command from my code.
my date and time picker cant get data on my SQL yog database it only get data on year 2011 .it cant show me data on year 2012...i hava a range of date.my code is :sSQL = "select * from qry_reciept where product_name LIKE '%" & txt_name.Text & "%' and b_desc = '" & cbx_brand.Text & "' and d_purchased >= '" & datetimepicker_1.Text & "' and d_purchased <= '" & datetimepicker_2.Text & "'"
How do you restore a dataset to the previous state before updating the database with a data adapter? I have a concurrency update problem that I believe to be caused by this. The update fails during the update and a rollback command is issued using a SQLTransaction object. However, now the rowstates of the rows that did not have errors have been changed to unchanged. So this record is no longer availible to be inserted into the database. When I updated the value that could not be null and then test the second update which runs just as the first does then I get a concurrency error. The update code is below:
Ok, most of my Visual Basic experience I admit was with VB 3 and VB 5. I'm just starting with VB 2005 Express, and get this error when trying to connect to a new database.
I'm using Windows Vista and have the latest Microsoft JET version, so I have no idea why I'm getting that error.
Code to add a new row to my datagrid on click of add button. I am not binding my grid to a datasource.I m fetching values from the database through a datatable n then through a lood inserting t values to my datagrid. i m not binding the entire datatable as my datasource for the grid.
I have 2 datagrids. One to show Product information and another for Product purchase details entry.Both share the same dataset. The dataset (ds) is filled up with columns from 2 table
I'm having a hard time on using Transaction then after that I need to use sqldataadapter. When I tried the code below I'm having an error "ExecuteReader requires the command to have a transaction when the connection assigned to the command is in a pending local transaction. The Transaction property of the command has not been initialized." Pointing to this block.[code...]
I am using a sql server database and i am storing the time value in the datetime variable. I am developing a booking system application in vb.net. When I want to view already made bookings using datagridview and by implementing dataadapter and dataset...When the table is shown in the datagridview I want custom column names to be shown so tell me that how can i use alias in the query given in datadapter initialization part?
I am trying to add a parameter to a sqlDataAdapter. I have tried to use parameters.add() but the adapter is not a sqlCommand. Here is some of my code.
Private Sub convertToCSV(ByVal SqlQuery As String) Dim Dt As New DataTable() Dim SqlCon As New SqlConnection("Data Source=db;Initial Catalog=productionservicereminder;User Id=id;Password=pass;")
This should be a fairly simple one. I am creating a dataset which will contain a description field which I would like to sort by. The reason I want to sort the dataadapter and not in my SQL is that I am already ordering by the results that have a particular value.My SQL looks like this:
SELECT pif_desc, pif_fund, psf_end, (CASE WHEN SUM(pmi_units) IS Null THEN 0 ELSE SUM(pmi_units) END) As fundunits FROM tbl_mem INNER JOIN tbl_sfunds[code]....
I want to sort the datarows is ds.tables(0) by pif_desc but still have the rows with fundunits > 0 listed first. how I can achieve the correct ordering.
I have been researching all that is related to DataSources, DataReaders, DataAdapters, etc, with an Access 2010 DB bound to a DataGridView.
Everything is fine, just one line fails and is driving me nuts Here is the code:
[Code]...
The line that fails, actually updates my database, but somehow, the update is not performed on the line that belongs to the first row of the grid. What is more, if I change the value manually, the same update method works fine. What is going on here?
I'm trying to create a form that uses controls that are bound at runtime. All the data objects are declared at the form level. The Select statement includes the two fields that make up the PK form the table. The Owing_Company data displays in the bound control. I can change the text and in Save_Click the RowState is Modified and Row!Owning_company has the changed data. DsForm.HasChanges is False. A simple call in Save_Click daForm.Update(dsForm) does not change the DB. If I update the Row!Owning_Company in code dsForm.HasChanges is now true and daForm.Update changes the data. What am I missing that allows changes made via the bound control to modify the DataSet?
