Updating SQL Table On Form Close?
Jun 13, 2012
So on the form close I want to update the SQL table with changes that have been made through the text boxes I have. Text boxes populate with respective data (last name, first name, username, etc) and I have the correct SQL query as I've executed it and it works. I have it set up that a msgbx will open and clicking "yes" will confirm the change and update the SQL table.
When I click "yes" the form stays open as it is looks like it is still updating/loading/something I can't confirm and it does not move on to my next form_close event. I'm fairly sure I missed something with the SQL command to actually update the table
[Code]...
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Nov 2, 2011
I have a form that is not updating. Just wondering if anyone can see an obvious error.
Private Sub SaveButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SaveStoreButton.Click
Try
[code].....
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Aug 27, 2010
I am new to VB.net and want to know how I can execute SQL queries from within VB.net code. Example: I want to update some records in a table using SQL query on the Form Load event.
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Mar 20, 2009
I have a main form that has a button with which a smaller form is shown. Think of the smaller form as the Find/Replace dialog in many applications, such as Notepad. It's important that the form is (what I believe is called) modal. What I mean is that it always stays on top of the main form. I ensure that by calling the Show method with "Me" as the owner argument. Whenever the small form loses focus it will not disappear into the background but stay visible (albeit out of focus). If you don't understand open up Notepad and have a look at the behavior of the Find/Replace dialog.
Here's my problem: instead of actually closing the form when the X is pressed, I want it to simply Hide itself, so its position and the state of any controls (checkboxes etc) is preserved automatically.To achieve this I simply cancel the FormClosing event and Hide it:
vb.net
Private Sub Form2_FormClosing(ByVal sender As System.Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles MyBase.FormClosing
[code]....
To show the form, I use the following (note the (Me) to make the main form the owner of the form; this ensures that it remains visible even when it is out of focus):
vb.net
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Form2.Show(Me)
End Sub
Now. When I run my project, and open the Form2 (small form), then hide it again (by 'closing' it), I can no longer close the main form (Form1)! It seems the main form cannot close when the small form still exists (albeit invisible)...?? When I don't use the Me argument in the Show method, I don't get the behavior I want. I know I can set the TopMost property to True but that will also cause it to become visible on top of all the other forms, even windows not part of my application.
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Jan 17, 2009
I have set up a notify icon for my form. I want to make it so that when the user clicks the close button that it doesn't close the form it just takes it to shows the notify icon. They can exit the program from the notify icon. Can someone tell me how to keep it running?
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Feb 12, 2011
sometimes, when I use Form.close() when debugging my program, although the form is closed, the application is still running. I noticed this behaviour when using the msgbox function.
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Aug 30, 2009
my web browser is my main form and it has a number of sub forms , how can i set it that when i close the main form my sub forms dont close ?
At the moment when i close the main form all the forms close
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Feb 14, 2011
I try to transfer a vb6 application to vb2010. In the vb6 I start with a login panel that the user enter uid and password autenticate with the DBServer if ok show application main menu and close the login form. the order of the me.close() after the mainform.show() does not change, The application ends.
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Mar 2, 2009
I have a situation where me.close() doesn't close the form. I have a form with a button with the code seen below. What happens when the button is clicked is the new form shows, but the original form(calling form) is still there. When I go into debug mode, I can see the me.close() execute, but nothing happens (calling form stays open). When I close the second form both forms close. If I comment out the call for the second form to open the first form closes without problem.
Private Sub cmdNext_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdNext.Click
Dim f As New frmOrder3
[Code].....
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May 5, 2012
I use a dbDataAdapter to populate a DataTable from an unlinked oracle database.I have a dbDataAdapter that I want to insert rows into an SQL Server table using SQLCommandBuilder.I have been trying all day to update the DataTable that references the SQL Server table with the data from the Oracle DataTable so that I can insert the rows.
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Mar 22, 2010
I am really new to Visual Studio and VB and I am having trouble closing a single form:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Me.Close()
End Sub
When I use Me.close() associated with this button it closes the entire project and not just the single form can anyone.
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Oct 14, 2009
I am trying to create an application which after selecting a target folder updates the files that are inside to an access database. The first part of the code here works fine as it allows me to choose a destination folder, but when trying to get it to update the cotents to the database it will not work.
This then means that when using code for another button to search and display files stored in the updated table in a combo box there are no objects attached meaning it creates an error stsaing it cnnot find the object or path.
The code is below
Private Sub Button3_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btDirectory.Click
' First create a FolderBrowserDialog object
[Code].....
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Mar 29, 2011
[code]...
Dataset table not updating The reason why everything ends in 1, is because I have another instance running with similar names... so disregard that.
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Aug 15, 2011
I have managed to sort out my date issue however although I have used the same code format on of my tables is not being updated and I am not getting any error msg so not sure why it will not work
this is my code cmd1 = conn.CreateCommand
cmd1.CommandText = "INSERT INTO tenant(t_id, firstName, lastName, email, phone, dob, rentPaid, rent, dateIn, deposit, service, rentDueDate, property, notes, existing) VALUES(@t_id, @firstName, @lastName, @Email, @phone, @dob, @rentPaid, @rent, @dateIn, @deposit, @service, @rentDueDate, @property, @notes, @existing)"
[Code]...
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Jun 12, 2011
I am trying to update a database table that's attached to a table adapter and can't quite seem to be able to get the code to work. It was suggested that I use an update statement, but the person I was working with had no idea how to update a table adapter. how to update a table adapter.
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Mar 10, 2010
In a table I�ve a bit field which is shown as a checkbox in datagridview (col 20). Once the dategridview is painted in my form, I�d like to save the checks made in the checkboxes. The following code is not updating my table but it�s not generating errors either.
For i = 0 To Me.DataGridView1.RowCount - 1
Dim data = Me.DataGridView1.Rows(i).Cells(20).Value
Dim sql As String
[Code]......
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Dec 4, 2009
I created a table in VB.NET by using a query which joins some tables. Then, I created a DataGridView to show the records of the result of this query. The toolbar has the buttons to add a new record and to delete a record. My problem is that I also need to update my database, and the button for the update in this case is disabled. How can I update my database?
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Mar 11, 2010
I am creating a project for myself to practice Database connectivity, updating, deleting and adding items. I am having an issue updating one of the tables i have added, within a table there is a column called Today's Date which will contain the date the last time the program ran, when i run the program i want it to update that column with the new date. [Code] When the code runs to 'da.Udate(ds, "Expenditure") I get the following error: Missing the DataColumn 'Asset Name' in the DataTable 'Expenditure' for the SourceColumn 'Asset Name'. The 'Asset Name' mentioned in the error is a column name but it is in my two other tables, why would it be reading them when I specify the table.
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Feb 18, 2010
[code] I want to update my table by using the textbox value with condtion. [code] The above query is showing error as "Conversion failed when converting the varchar value '23/02/2009' to data type int".
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Apr 10, 2011
I have a program that has a variety of pick lists updated via an WCF process. For most cases, the pick lists are VERY short. The process I used for the update is overly cautious.The table comes in, then for each row in the incoming table, the matching row in the target table is found, if there is one, and each field is compared. This works fine for those short lists. The whole thing is done on a background thread, anyways, as changes are pretty rare.
cmd.CommandText = "SELECT HydroID FROM GIS_Hydrography WHERE HydroID = " & dr("HydroID").ToString
rObj = cmd.ExecuteScalar
[code].....
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Mar 31, 2009
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:
--------------------
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.
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Feb 10, 2011
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)
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Oct 4, 2011
I'm trying to progress my programming abilities by coding in Visual Basic forms. I've created a database and linked that to a VB form, I'm now coding a way to write into the database instead of reading.I'm filling an array which is in-turn put into the dataset row by row however when attempting to 'update' the table adapter I get the following error:
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May 19, 2011
I have a small problem I am using table LAB1 for printing as well as updating. In my program (Multi user) one user enters records into table Lab1 while another user is printing out bills. The data entry program and the bill printing program shares the same table LAB1.When they print bills it (program) messes it up as it brings up the data which is being entered by the data entry user.
[Code]...
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Jun 1, 2012
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()
[code].....
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Apr 18, 2006
Honestly I do not understand why I need to write code to update a databse and why it stores it localy. I'd simply rather the system update the individual row after it is scrolled off of.
In either case since I guess I can't do that.
Here is some code in a button on a form
Try
ItemsTableAdapter.Update(NewCreationsDataSet1.Items)
LineCodeTableAdapter.Update(NewCreationsDataSet1.LineCode)
Catch ex As Exception
[Code].....
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Oct 28, 2010
I have a DataGridView filled from the MySQL database table. I want the changes made on the datagridview records, update the table when a Save Changes button pressed. Here's my code which takes the data from the database and adds to the DataGridView.
Private Sub cihazmodeli_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cihazmodeli.SelectedIndexChanged
'Loads database records to Datagridview
If Not CStr(cihazmodeli.SelectedItem.Value) = "" Then
Dim sorgu As String = "Select
[Code] .....
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Oct 28, 2010
I searched internet including this forums to find a working example about the following subject but couldn't find a solution about my problem.I have two main problems:1) I have a DataGridView filled from the MySQL database table. I want code update the changed records, when a "Save Changes" button pressed by the user.I created the code below to make it. It makes update on the changed row, but enters Null values. So after the update on the database, the values become null.2) At "Private Sub cihazmodeli_SelectedIndexChanged" section my code reads the database and loads the values to the DataGridView. When I make another change on the Combobox, it adds the values of the new SQL results at the bottom of the previous records. I tried to clean the results using either Clear() or some other methods but got a message meaning "Content entered with DataSource can not be cleaned with Clear or other methods". What is the way of clearing the previous choice's records?
Code:
Dim cn As New MySqlConnection("Data Source=localhost;Database=stokprogrami;User ID=root;Password=mypassword;")
[code].....
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Mar 22, 2011
i am working on a project that stores records from a windows form to an access datbase.But i am having problems with the update statement.I have a form with the fields bound to datatable called LeedsHubInfo .Dataset called LeedHubInfoDataSet1.
Private Sub cmd_save_Click(ByVal eventSender As System.Object, ByVal eventArgs As System.EventArgs) Handles cmd_save.Click
' Create a new row.
Dim newJobRow As leedHubInfoDataSet1.LeedsHubInfoRow
newJobRow = Me.LeedHubInfoDataSet1.LeedsHubInfo.NewLeedsHubInfoRow()
[code]....
On the update line i get an exception thrown up "A first chance exception of type 'System.Data.OleDb.OleDbException' occurred in System.Data.dll" I thought inserting a record into a database would be easy but i seem to be naking a right pigs ear of it?
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Mar 5, 2011
I used in Visual Basic 6 to update my MS Access Table to get UPDATED Balance Column. Now my problem is the same code I want to use in Visual Basic 2010 to update SQLserver Table.[code]I have Dataset, Bindingsource and TableAdaptor in Windows Form so with that how can I update my Balance Column. The Table contained 3 columns i. Debit ii. Credit iii. Balance.
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