I dont know where's my error.To begin with i have two buttons ADD and SAVE.My Datebase Name is COURSE where all its fields are text except courseid (number).when i click SAVE the only error is FAILED to convert parameter value from a string to Int32 exactly during dataadapter.update (ds,course)I am not converting any datatype or value to int32 .
Private Sub BUTTONSAVE_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BUTTONSAVE.Click
MsgBox(" SAVING CHANGES....")
Me.Cursor = Cursors.WaitCursor
I am once more having throuble linking my visual basic code to the acompanying database. this current error is when I'm trying to add a new record to the database, using an OleDb dataAdapter: Whenever I run it, I get the error "Syntax error in INSERT INTO statement."
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 need to select some user datagridview settings (such as column width, column visible, etc.) from my database. Then I run a loop to change those settings. If any settings are changed I need to update the database. For some reason I can't get the code below to update anything. The code throws no errors when it executes, but when I check the database for the updates nothing is changed.
Public Sub pubsub_UpdateUserSettings(ByVal FormName As String, ByVal dgv As DataGridView, ByVal MethodID As Integer) Dim adt As New SqlDataAdapter Dim cmd As SqlCommand Dim cmd2 As SqlCommand Dim dt As New DataTable [Code] .....
I am trying to make a little search system, so the user can enter a search parameter which then populate a DataAdapter, DataSet then DataGridView with the selected data then any change the user makes in the DGV are then commited to the MS Access (97) Database when a Update Button is pressed. This is what i have so far, at the minute it seems to populate the DA, DS and DGV but when i come to press the Update Button I get a pop up box with a long error message:
Private Sub btnSearch_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSearch.Click connetionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source= " & frmMain.varDP_System
I am using SQL Compact Edition and have a textbox binding to a dataset. When I enter something in the text box and try to update the datasource I get that the column Code in the datasource cannot be null. The textbox has a value so why is Code null?
Dim CONN_STRING As String = "Data Source=" & My.Settings.AutoCallPath & ";Persist Security Info=false;" conn.ConnectionString = CONN_STRING Dim myCommand As New SqlCeCommand("SELECT * FROM AutoCallDataTable", conn) da.SelectCommand = myCommand
I have an application to re-sequence some items based on a an alphabetical ordering of the items from another table. I couldn't create an update statement to update the database when I pulled the information by a join query, So I pulled down both tables into a dataset with an XML Schema description where the two are related by the itm_id key as in the database. I then have two datagrids one with the items and one with the bound to the relationship this allows only the records associated with the itm to be displayed in the datagrid, I then run a loop that changes to sequence number for each corresponding record,this all works fine but then I go to update the back end database.
The update from the dataadapter executes successfully, but then if I reload the dataset from the database back end I find that the update did not actually update the records on the back end. The only record that was updated was the very first record which updated with a 0 then all the others did not take, I have re-run it several times and they will not take.
I have a DataGridView that displays data from a SQL Server database. It allows the user to edit the data and save it back to the database. The way that data gets saved back to the database is something like this:
Dim da As New SqlDataAdapter Dim cmdBuilder As New SqlCommandBuilder(da) da.SelectCommand = New SqlCommand(sql, conn) da.InsertCommand = cmdBuilder.GetInsertCommand da.UpdateCommand = cmdBuilder.GetUpdateCommand Dim cb As SqlCommandBuilder = New SqlCommandBuilder(da) da.Update(dt)
This works fine when I'm saving to ordinary tables. However I also want to save to a view that has an instead of trigger that fires on insert, update and delete. When I try to use the above with this view I get the error: "Dynamic SQL generation for the UpdateCommand is not supported against a SelectCommand that does not return any key column information." How can I save to this view? I don't want to save directly to the underlying table because I want the trigger to fire.
I also tried manually generating the InsertCommand and UpdateCommand, but got the same error. It turned out I got the commands wrong when I manually generated them. Once I fixed that it worked fine - my view gets updated and the trigger fires as expected. I guess that you just can't autogenerate the commands for a view with SqlCommandBuilder.
I've taken over a winforms project (attached to a SQL Server database) that needs to completed quickly so am trying to work with what the other developer has rather than rewriting it all. He has an admin form with a listview and a datagridview. The idea is to allow a user to edit the lookup tables for the database (customer type, product list, etc). When the form is loaded, the listview is populated (hard-coded) with a list of available tables. Clicking on a table name fills the datagridview with the contents of the table. What he left incomplete was the updating of the database if the user makes updates/inserts to a table.Now, I know that normally you would just call the Update method of the dataadapter, but he passes all his database calls for the entire project through a helper class that will execute parameterized sql queries (for updates/inserts), or return a bindingsource object for displaying data. But this helper class does not expose the underlaying dataadapter.
To populate the datagridview, he uses the following code in the ListBox1_SelectedIndexChanged event: Private Sub ListBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As
[code].....
The rest of the app deals with only one record at a time, so when an update is needed, he scrapes the data from the form, builds a parameter array and passes the array and the name of the stored proceedure that handles the update to a method of his helper class called .InsUpDel - which is simply another wrapper that builds a parameterized query, executes the passed stored proceedure and returns the success/fail state of update.But, since this part of the app deals with an entire table rather than just one record, that method doesn't work. So, back to my question: How can I update the database when a change is made to datagridview when all I have is the bindingsource?
Im having a very strange problem.. I just copied the source code from one working application to this new application. It was working fine over there but not over here in new application. Neither it was showing any error nor updating the data. Below is the source code (method) that im using ..
I have two similar databases and i want to update a table of one database from the other, so insert new records, delete records that are not in the source and update different values.I use the dataadapter update method but it not recognize the primary key, so it only work when the destination table is empty. Otherwise i have an exception of duplicate primary key.The databases are sqlite but i tried with access too with the same error (different message due to different provider but the two times saying that cant insert because the primary key is duplicate).
My code is:
vb Private Function updatetable() connectdbsource() connectdbdestination()
Any tutorial and maybe a sample project that can be downloaded that shows how to update a database such as MS Access from DataAdapter commands in which changes are made in a DataGridView? For example, the DataAdapter contains 2 tables called FirstTable and the other table would be called SecondTable. The DataGridView is based on a query that shows rows from both tables. The actual table that contains the rows to be changed, inserted or deleted is FirstTable.
I'm having trouble updating a sql server database with a dataset using a dataadapter. I have used the dataadapter with success in the past when adding new rows, using a single table, and just calling the dataadapter.update command.However, I am now running into a more complex scenario and I need to use dataadapter.UpdateCommand method and I'm having lots of problems.
The sql statement that I'm using to fill the dataset looks like this: "Select [Order Details].ProductID, [Order Details].UnitPrice, [Order Details].Quantity, [Order Details].Discount, Products.ProductName From [Order Details] INNER JOIN Products ON [Order Details].ProductID = Products.ProductID Where OrderID='" & strOrderID & "'", sqlConn"
This is pulling the data from 2 different tables (Order Details and Products) and then joining them and filling the dataset, and I am seeing the exact results I want. I am then binding the dataset to a datagrid control that allows the user the option to edit the datagrid, which in turn updates the dataset.
So that being said how do I get the updated dataset back into the database? I tried using dataadapter.update but it informed me that I now need to use dataadapter.UpdateCommand. Ok, so I've looked up how to use UpdateCommand but I cannot for the life of me figure out how to set up the right sql command statement. Part of what has me confused is the UpdateCommand examples I have seen are working with a specific row and updating that rows data. I can get that to work but I want all changes to the dataset to persist and update to the database when the user is done working on the datagrid.
Also, the examples shown set up command parameters but again, this is only confusing me because I just want to send the whole dataset back to the database. It seems like the parameters are saying "Ok, this specific row in this specific dataset.table, update these specific fields in this specific database". I'm not sure how to accomplish that when working with a datagrid.
I was working with a class used to update database.All things were working for 3 years perfactly.Now it started throwing exception for two records only.When i edit these two records and try to save back to db it throws exception.Else it works fine.
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.
1) If I insert a row into a sql table using insert query and 2) If I fill a datatable in dataset and add a row to it and again use the dataadapter.Update method for inserting this row.
I posted in the Database development forum, but no bites. I have field names in my Access table which have a number as the first character (i.e. "2x2"). Evidently, the DataAdapter doesn't like this. I'm able to view the data in a DataGridView, but I get an exception when I use DataAdapter.Update.
Can I modify my sql statement to make the command builder work or do I have rename the fields?
For example:
"SELECT [2x2] as twoBytwo..."
Changing the names of the fields would be a huge pain-in-the-arse!
As part of the application I'm writing in Visual Basic, I have written code to display records in text boxes and cycle through each of them one record at a time. I'm having trouble getting the code I've written to update records to work however.
VB Public Class frmRecords ' VARIABLES TO AID NAVIGATION THROUGH RECORDS Dim moverow As Integer
[code]....
At the present time I get an error that says "The DataAdapter.SelectCommand property needs to be initialized"
have a datagridview containing 2 tables left joined, so that:table1 LEFT JOIN table 2 ON table1.id=table2.idI get an error whenever I try to edit my datagridview."invalidOperationException was unhandled by the user codeDynamic SQL generation is not supported against multiple base tables."The error points to this line:
da.FillSchema(dt, SchemaType.Mapped) da.Update(dt) << This line 'da = dataadapter
At the top of my code for the form I have the following statements (and some other unrelated ones to):
Dim LastDataRow As DataRow Public Event RowChanged As DataRowChangeEventHandler
When my form loads I run the following line of code:
AddHandler dt.RowChanged, New DataRowChangeEventHandler(AddressOf Row_Changed)
After the form loads I have a FetchData button which connects to the database and brings the records into a datatable object. During this fill operation my Row_Changed event fires (for every record I think) and tries to run DataAdapter.Update(DataTable) (pseudocode) which ultimately fails because I haven't yet created commands. The error I get in my Row_Changed procedure is:
Update requires a valid InsertCommand when passed DataRow collection with new rows.I hadn't even planned to use an InsertCommand at all since I will not be allowing users to insert records from this form. I do plan to allow them to delete or modify existing records, but not insert new ones.run my AddHandler statement after filling the datatable. However, I'm trying to figure out how to rewrite my code so that I can refresh the datatable without closing out the form/application and having to open it up again. I think that's a problem for a separate discussion.
I have an issue with a data base updating it won't update for me in debgging mode it is stopping here on this bit of code which is highlighted in red. the error which comes up is .(update requires a valid update command when passed datarow collection with modified rows.)
Public Sub UpdateDataSource(ByVal ChangedRows As database.dataset1) Try 'The data source only needs to be updated if there are changes pending. If (Not (ChangedRows) Is Nothing) Then
I am completly flummoxed!!! I have writen code for updating my table from a form but when I use the same code only changing the table names it wont work I get the following message: "Update requires a valid Update Command when passed DataRow collection with modified rows" My codes are as follows:
when trying to use the update command for my table adapter, i get the following error.
[Code]...
i've used the same commands several times and even tried copying the code from another project and importing that table and still get the same error. am i missing a namespace or class or something?
I am getting the below stated error in javascript. This error occurs when i try to cal update panel on button click Sys.WebForms.PageRequestManagerParserErrorException: The message received from the server could not be parsed. Common causes for this error are when the response is modified by calls to Response.Write(), response filters, HttpModules, or server trace is enabled.Details: Error parsing near 'Panel|UpdatePanel1| <div id="up'.
Here is the UpdatePanel code:
[Code]...
I am not able to understand why this error is coming? Can anyone help me sort out this issue?
I'm writing an application to update a database with student records. I've used this particular code before, but with just a single column, but i added multiple columns to this one. when i call the sub to save the records it gives me this exception:syntax error in INSERT INTO statement at line 41
