Updating A Datagrid (VB2008) - Record Updated Does Not Appear In Form
Jul 25, 2011
This VB.NET rookie is asking for the support of those with expertise. BACKGROUND: Form1 has a Datagrid, Dataset1 create by drag DB into datagrid. Form2 presents the record selected from the datagrid. Within the LOAD_FORM I search the DB with the Key and place data in Dataset2 (DS created manually)
CHALELNGE Record updated in Form2 is saved in DB fine and when Form2 is closed, record updated does not appear in Form1. I�ve tried the following but no sucess In form1 event Ive got the code to load data into the DS Me.TUSERSTableAdapter.Fill(Me.PTDataSet.TUSERS) FINALLY: What should I do to see the datagrid updated?
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Apr 28, 2009
I am trying to update a table based on row selected in a grid (C1TrueDBGrid1.Columns(1).Value), but I am getting the following error:
Update unable to find TableMapping['Table'] or Data Table 'Table'
Code:
Dim ConnectionString As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=/DataDirectory/AOPT2002org.mdb;Persist Security Info=True;Jet OLEDB:Database Password=testaopupdate" Dim objConnection As New
[Code]....
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Dec 3, 2009
Basically I have two forms - Form1 has a DataGrid on it (Infragistics) and in the double-click row event it creates an instance of the EditForm and passes along the UniqueId for editing. Once the user saves the changes (if they make changes) - I want the DataGrid on Form1 to refresh. Here is how I thought I could get this to work ... I create a public property called RefreshRequired as boolean. Before unloading the EditForm it sets this property to true. Then Unloads. This continues the code in Form1 (which showed the EditForm as modal) but RefreshRequired is still showing as False? Why isn't my EditForm able to set the property?
FORM 1
Private Sub grdList_DoubleClick(ByVal sender As Object, ByVal e As System.EventArgs) Handles grdList.DoubleClick
' TODO Ignore Double-Click Event when Right Mouse Button Triggers Event
[code]....
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Jan 4, 2011
I have a Master List in the DataGrid that displays all the "Monitors" - think of them as Audits (for context). Basically when a user clicks on a row in the DataGrid the TextBoxes, ComboBoxes, CheckBoxes and DatePickers all show the values and the user can edit them there and that all reflects in the DataGrid just fine.How do i go about using the same TextBoxes, ComboBoxes, CheckBoxes and DatePickers to add a new record?
<Monitor.VB>
Public Class Monitor
Public Property MID As Integer
Public Property FileNumber As String
[code]....
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Sep 4, 2011
How do I fire an event when changes are made in a datagrid embedded in my form? My datagrid houses line items for different forms (Sales Orders, Purchases Orders, etc.), and when a value is changed (i.e. quantity or price), I want it to re-calculate the datagrid automatically (extended amount) and also re-calculate totals in the form itself without having to hit the Save Button. Right now I have a sub-routine that fires when the button is chosen, but how do I fire this event automatically on datagrid changes?
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Jun 16, 2010
Scenario: VB2010 express + Sql Server 2008 express.
I have a master/detail form where I can modify a record. With VB 2010, I use the new Table Adapter Manager which handles all Updates/Deletes against the database inside a Transaction. Question is that before I update the modified record (only the master one), I need to insert it in another table (history table). My question is how I make both insert and update inside the same Transaction. By code? Using Stored Procedure?
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Mar 15, 2012
I have form A that has a datagrid on it, I want to be able to double click a row in form A and open form B to that record.
I know how to do that in VBA in Access 2007, but I am having trouble comprehending the procedure for VB 2010.
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Oct 26, 2011
VB2008 with MS Access Database updated related data ?
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Mar 13, 2012
i have this addform to add, edit and delete records in marriage tab, baptism tab and so on and before we can see this form theres another form the emform my question is how am i supposed to code the "view this event" button, that when i click on the selected row my addform will show up with the row i click on the view button is selected/highlighted on this addform (btw i bind all the textbox in my add form on the columns of my marrige table)
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Mar 9, 2012
I have an issue with a data table that I have updated using the datatable.update command.The datatable is bound to the datagridview using dgv.datasource = datatable.I have used INSERT and UPDATE commands and the INSERT command writes the data back to the database ok. However my problem is that it the dgv is not updated with the primary key (ID field) from the database. So when I save a second time, instead of updating it just inserts the data again.
[Code]...
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Apr 23, 2009
How can i retrieve last updated EmpID form sql database.
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May 12, 2011
I'm still somewhat new to ASP, and can't seem to figure out what the issue is.When I update an item in FormView, I need the text of a button to change.I'm using:
Protected Sub fvClientInfo_ItemUpdated(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.FormViewUpdatedEventArgs) Handles fvClientInfo.ItemUpdated
btnEditClient.Text = "Edit"
[code].....
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Jan 28, 2009
I have VB.Net Exp 2008 with SQL Exp 2008, on a windows form I have 6 databound textboxes and 6 unbound textboxes, in the bound textboxes the records show as the bound dataGridView rows are selected, in the unbound textboxes is where I will enter the new record to be sent to the database. Added an SQL database in the designer which gave me a dataset(MdDB1DataSet) and a tableAdapter(MdTBTableAdapter). My problem is with adding, updating and deleting records. The add records button addes it during debug to the dataGridView, but does not return when I debug again. So this means it is not added to the database. The update button updates the fields in the DGV, but no record was retained.
Add Record button:
Dim nr As DataRow = MdDB1DataSet.Tables(mdTb).NewRow
nr(0) = Trim(txtAdd1.Text)
nr(1) = Trim(txtAdd2.Text)
nr(2) = Trim(txtAdd3.Text)
nr(3) = Trim(txtAdd4.Text)
[Code] .....
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Sep 25, 2011
i can't find any wrong, if record exists then updated the record but only can insert the new record.
cannot updated the record.why?
[Code]...
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Jun 6, 2011
I have a datagrid with textboxes on it that are bound. Displaying the data pulled from the db works. But when a user updates a textbox I am unable to extract that data. I have tried a few options I have found involving using CType.
[code]...
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Jun 26, 2009
I want to update a date field in my table when a record is updated to reflect when the last update was made. I have this for the parameter: objEXTCommand.Parameters.AddWithValue("@entryDate", Now.Date)
However, this inserts the Date and a time of "12:00:00". I want the date and current system time. I've gone about several ways, but none seem to work. I try this: [Code]
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Oct 16, 2011
I have a datagridview with transaction bindingsource I want the datagrid to show the sorted rows only not all the records when i enter a value into a textbox and click button sort.
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May 27, 2011
Visual Studio Pro 2010 Win 7 64 bit running bootstrapped to a MacBook Pro i5 (blasphemer!!!) works really well though!!New to vb.net, have used vb6 for several years and finding the transition interesting to say the least.I have an access database with a vb.net front end all auto bound by the connection and binding wizards (I know, I know...) Not too complicated, but a simple 2 table related db. On the form the parent table shows customer details with the child table related and displayed by datagrid. I have a field in the child table for images and I have figured out how to store and retrieve images to the db. I am using the datagrid.rowheadermouseclick event to reload the picturebox on the main form as I click down the child table datagrid. Now I need to be able to click the bindingnavigator, go to the next record and have the program reload the image for the next child record. The problem is I'm trying to use an event from either the datagrid or bindingnavigator to reload the picturebox in the child table after moving to the next record, but all of the events I am trying are firing before the next record is moved to and therefor the logic I'm using to retrieve the image from the db is not working.
Anyone with an idea on how to move to the next record and then run my logic to populate the picturebox? What events might I use that fire after the next record has been populated? I know this is probably not that hard, but I have been racking my brain all day now.
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Feb 28, 2009
Why my delete button wasn't work. it say "InvalidOperationException was unhandled' at m_daDataAdapter.Update(m_dtContact).
What that means?[font=Arial Black]
Public Class Form1
Private m_cnADONetConnection As New OleDb.OleDbConnection()
Private m_daDataAdapter As OleDb.OleDbDataAdapter
Private m_cbCommandBuilder As OleDb.OleDbCommandBuilder
[code]....
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Mar 26, 2011
I am having no issues reading from an Access database, just when I am trying to add a record to the database I am getting no results. I am using a 64bit computer, and am aware about running in the x86 solution platform. I am getting the result that it hassuccessfully added. But nothing is showing up in Access
Private Sub voteBtn_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles voteBtn.Click
Dim decision As String
[code]....
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Sep 28, 2009
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?
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Sep 28, 2009
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.
I have two questions:
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
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Nov 26, 2008
I use a List(Of T) (where each T is a custom type with a few members) to keep track of about 500 items that change all the time. The list can be changed from different locations within the program (uses background workers that monitor the list).
Question: Is there some built-in way to prevent the List from being updated from different locations or from different threads at the same time? For example, one thread may remove an item from the list while another location changes one of the members of an item, causing conflict, wrong data and errors. Perhaps there is a standard way in VB.Net (framework) to solve this type of problem?
I use VB2008 (VS2008 Pro) and WinXP SP2.
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Jul 12, 2009
Essentially this section assigns a randomly generated password to a user if they have forgotten theirs. The password is generated in some other code.
I have set up the SQL to search for the log-in details (in the case and email address which is unique), it then brings in the field and then updates it to the new password.
But for some reason I cannot get it to update the MS Access Table.
I Keep getting a SYNTAX Error message.
Private Sub bthresendpassword_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles bthresendpassword.Click
If txtemailaddress.Text = "" Then
[Code]....
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Jun 21, 2010
I am having problems editting my record where i basically want to select a record from the datagrid view and change any details where the data is displayed in the text boxes i have put on my form and click edit and have the data updated on to the database as well as the dataset. As for my updating button the code seems ok but i check my database and it doesnt change. Here is my code where the edit and update button code are at the bottom:
Imports System.Data.OleDb
Public Class Stock_Control
Dim dbConnection As OleDbConnection
[CODE].....................
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Aug 20, 2010
i try to create a windows form that act something smilar to a cash machine i managed to enter a mount with my first button then my second button is for withdrawing money it checks the amount in the text amount if it is higher than the amount the small dat hold in the amount it will throw an error message if it is less or equal it write the amount in the text box my goal is to deduct that amount in the textbox amount from the amount already at the database.[code]
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Jun 12, 2011
update on vb.net 2008!It's quite a simple code but when it comes to it tells me Syntax error in Update.The problem is where i highlited.
[Code]...
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Mar 13, 2012
I am basically trying to retreive a record from the database where CardNo is the text in txtCardNo.However it doesnt work it keeps seying datatable cannot be converted to dataset.row..[code]
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Oct 21, 2011
update record in my mdb this is my code but it updates only 2 fields yet I have five so update the rest
[Code]...
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Jul 21, 2009
I am using vb.net console application. I want to update record in database without using primary key in a database.
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