VS 2008 - Updating - Datagridview With Data From A Datatable
Nov 17, 2009
I have a little big problem in one application.
I have a datagridview with data from a datatable, this datatable have these fields (id,num1,num2, date,user,ref,qt,cost,center), some of them are hided in the dgv (id,num1,num2,date,user). The user can edit,delete and add new rows to the dgv.
I have a save button that performs this actions:
First check if there are new rows, and if yes it fill the hidden fields. Then validate the inserted values by the user with a couple of ifs. In the end, i call the bindingsource EndEdit, and call the adapter Update command against the datatable...
This sometimes works others not really, i don't understand why.
The error it's: "Concurrency violation: the DeleteCommand affected 0 of the expected 1 records"
I think sometimes when Updating it occurs to.
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Jul 24, 2011
I am sorry to keep bothering you about this damn DataGridView control ... As you might have noticed I am having a hard time with the DataGridView control ... My latest problem has to do with updating the data base file (Access) through a DataGridView control .
Up to now I have managed to successfully edit an entry in the DataGridView control and moreover to successfully update the data base file itself .
The above form and its code work fine . The problem starts when I am trying to run the code of the Update button from another form .
You see , I have another form , through which I change the contents of some of the cells in the DataGridView control (back in Form1) . What I want next is to simply update the data base file itself , just like I was doing with the button in the first form , after I manually changed the cell in the DataGridView control .Thus , on the second form I have a button with this code :
Form1.Button1_Click(Nothing, Nothing) (of course the Click event is declared public)I have also tried :
Form1.Button1.PerformClick()
but still nothing ...Although Form2 successfully changes the cells back in Form1 , the data base file itself does not get updated ...If I manually press the Update button in Form1 I once again successfully update the data base file , but I want to do the whole thing by calling the Update button from Form2 .
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Jun 16, 2009
I have recently built an N-Tier app using VB.Net 2008. The application is based on Beth Massi's tutorial at [URL] I am trying to incorporate a datagrridview control on a Parent form - one parent (father and mother) to many children. For example,
[Code]...
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Feb 3, 2012
I have a vb.net form to add, modify or delete the product list..i have a datagridview in which i m loading data from sql server datatable...now i have a text box which accepts code for the product..i want that when i press a key, all data starting with that key should be highlighted in datagridview.....
eg
i have product codes
A001
A002
A003
C001
D001,, etc..
Now i press A in text box...in datagridview all data with A should be highlighted
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Jan 27, 2010
I have a form which has bound textboxes from 2 tableadapters allowing me to use:
me.datatableTableAdapter.fill(dataset.datatable)
so I assumed that I could use:
Try
[code].....
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Jun 14, 2009
But I've got a problem now, and I haven't been able to find any answer. Here is the code I'm executing:
Imports MySql.Data.MySqlClient
Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
[code].....
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Feb 12, 2009
I have a datagridview and the datasource is a database query. This query takes data from multiple tables within the database.
When I run the project the data loads to the datagridview fine. However, the system needs to allow the user to update data shown in the datagrid and save it.
I've been messing with this for ages now and it is still not saving correctly. Here is the code behind the save button:
Private Sub btnSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSave.Click
Dim strUpdate As String = "Update tblAttendance set Reasonforabsence = @Reason For Absence"
[Code]....
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Feb 15, 2012
I have a datagridview and 3 buttons (New, update and delete).When I enter the form and I make changes to the datagridview and I save them, everything works fine.After the first save I make some more changes and I hit save again I get the error:"system.data.dbconcurrencyexception concurrency violation the updatecommand affected 0 of the expected 1 records"
The code I use below:
Private Sub btnAdd_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnAdd.Click
Me.dgvOrderRegel.AllowUserToAddRows = True
[code]....
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Oct 13, 2010
I have a form that lists all of the clients in a DataGridView and when I click on a column that is a Link I want the data to populate into the form I use to capture. My problem is that when I click on the link all the TextBoxes on the form are filled correctly but my ComboBoxes are not.[code]
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May 21, 2010
How to copy all datagridview data into a datatable ?
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Dec 2, 2010
How can I fill Datatable with DataGridView data (VB/C# .NET)?
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Oct 13, 2011
I'm facing a problem with a datagridview datasorce, or refreshing it. I'll try to explain what is happening. So I have a datagridview called dgvMaterials, I'm binding datasorce to the datagridview from one table in mySQL server. Here is the code:
Dim ds As New DataSet
Private Sub frmSettings_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[code].....
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Jan 6, 2010
fill a NEW DataSet's DataTable with data from a DataGridView? I am generating a data report that uses that "new DataSet." I need to go from a DataGridView to a DataSet because i need the person to be able to perhaps edit the information before its inserted into the report. my process to generate the report is...
- fill datagridview with advanced join sql
- allow user to edit datagrid if necessary
- put datagrids modified information in new dataset
- set report's databinding source to new dataset
- generate report...
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Mar 9, 2009
I'm populating a DGV from a DataSet... all done by code. I have the properties set to allow editing, etc. However, when I make changes to a record, they're not updating back to the Database. I suppose my assumption that by setting the properties to allow editing would automatically write the changes back to the database were wrong. Do I have to write update, delete, etc. commands?
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Jan 19, 2009
I'm following advice to load data to a DataTable, binding to a BindingSource then a DataGridView. But some exzamples I've found use a DataAdapter, not a DataTable. [code]
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Feb 21, 2010
I have a datagridview where i add rows using array like this:
Dim srow() As String = {getIDprodus(cmbprodus.Text), cmbprodus.Text, getprodusforma(cmbprodus.Text), txtcantitate.Text}
griddetalii.Rows.Add(srow)
Next, i need to let user to modify the added row. So when user selects a row and press EDIT, a new form is popped out using this code:
Dim i = griddetalii.CurrentRow.Index
frmdetaliiiesire.cmbprodus.Text = griddetalii.Item(0, i).Value
frmdetaliiiesire.txtcantitate.Text = griddetalii.Item(1, i).Value
[Code]....
In textbox1 i have put the index of the current row selected in grid The problem is when i push OK, the applications crashes and i receive an error: INDEX WAS OUT OF RANGE
If the users changes the values from the same form, it's works. But changing them from another form crashes the applications
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Apr 23, 2010
I would like to update data from my datagridview to ma database manually.
How should I determine which rows were edited?
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Apr 19, 2010
I'm learning some more VB in my spare time, and I'm making a simple customer database that uses SQLCE. I've got the datasource set up and all that, but for some reason when I hit accept on the form, nothing happens?
[Code]...
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May 3, 2011
I have a DataTable that's constantly being updated with new data from my database via a timer. That data is eventually reformatted and displayed in a DataGridView control.In an effort to prevent the DataGridView from completely refreshing from re-databinding (thus, clearing out selections, resetting scrollbars, defaulting sorting settings, and making the gridview flash as it reupdates), I'm simply removing old rows from the datagrid that no longer exist in the DataTable, and adding new rows to the datagrid that appear in the DataTable since the last update.
For the sake of simplicity, we'll call DataGridView the LEFT table, and DataTable the RIGHT table I'm looking for a way to go through both tables (LEFT and RIGHT), and remove old rows that are no longer in RIGHT and delete them from LEFT. And look for new items in RIGHT and add them to LEFT. Each table has a column called "RecID" containing a unique id for each entry that can be used for comparison. is there a way to do this all in one loop? What I'm looking for, in pseudo code:
<loop through everything>
if RecID does not exist in LEFT but exists in RIGHT
add new item to LEFT
if RecID does exist in LEFT but does not exist in RIGHT
[code]....
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Jan 22, 2009
I'm using VB.net 2005 and sql server 2000 i'm fetching the data into datagridview, but datagridview has several datasource depending on the "select case " Now can i export the data from datagridview without referring to dataset/datatable?
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Mar 24, 2010
I have a datagrid view that displays information from a table. Changes I make to the data grid view are not saved. I have a button called btnsave but I have no idea what to put in the click event to save changes to the DB.
vb
Dim ConnStr As String = String.Format("Provider=Microsoft.Jet.OLEDB.4.0;Data Source={0}", DataDir)
Dim conn As New OleDb.OleDbConnection(ConnStr)
Dim sql As New OleDb.OleDbCommand("Select * FROM USERS")
Dim dt As New DataTable
[Code] .....
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May 30, 2011
I have a datagridview bound to a datatable. I update the datatable quickly and constantly (each row updated multiple times per second).
column value of particular row is updated manually by setting properties in the contained items..
DataGridView1.Rows(index).Cells("col1").Value = message
Error : Index was outside the bounds of the array.
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Jun 3, 2010
I have a datagrid and set of collection of columns for the datagrid. I have added cloumnname and headertext using column collections in design time. I have made false of autogenerated column. I was unable to load the data in datagrid from datatable. If i remove the collection and add bind data in datagrid means working fine but not for the column collections.VB.net windows application.
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Nov 12, 2009
If I have a datagridview's datasource set as some datatable, is there a quick and easy way to reflect the changes in the datatable that have been made in the datagridview?
When I sort my datagridview, the rows in the datagridview and the datatable no longer match up.I know I can catch when the dgv is sorted and for-loop through the dgv and send it to the datatable, but I was hoping there was a save/update method or some such thing.
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Apr 4, 2012
I am using the DataGridView for editing data, but when I go to access the DataTable bindings there are no data. I used to bind the following
'Data Loading
dtDettaglio = lettura_art
bsDettaglio = New BindingSource(dtDettaglio, Nothing)
dgDettagli.DataSource = bsDettaglio
dgDettagli.AutoGenerateColumns = False
[Code]...
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Jun 17, 2011
My DataGridview already binded to Datatable dt1 DataGridview1.datasource = dt1 and i want to add another Datatable dt2 into datagridview after 20-30 minute and want to keep dt1 as well as in the datagridview ..How i can do that..
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Nov 28, 2009
I'm trying to clear a DataTable and repopulate it, and the DataTable is bound to a DataGridView. Here's the code I'm executing:
vb.net
Using reader As MySqlDataReader = myCommand.ExecuteReader
SyncLock tableLock
running.Clear()
[Code]...
If you want to replace this standard messagebox, handle the DataError-expection
When debugging, there is no break in the code. The messagebox just pops up without showing me exaclty where the error is located.
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Dec 8, 2009
I populate a datagridview using a bindingsource and dataadapter. So I join 3 tables in the view to get the data i need.
so I have my view as a child table in my dataset. and a table called classes which is the parent table. So when I select a Class(class 1A for example), my datagridview displays the pupils in that class.
Now i need to add another relationship in the dataset. so when I select a day in a monthcalendar, I need to add 5 checkbox columns for each day to my datagridview. Should I add these 5 columns to my datatable? i'm not sure what the best way is.
Then for each day I tick I have to save to my pupil_job_day table. I will save the peoleid,their accountid and the date. please help me
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Jan 28, 2011
VB2008 & mysql
Is it possible?
If so how?
Wanting to have multiple datagridviews showing unique information (via filters?) based on cell content all coming from one data table.
Example:
3 datagridviews accessing the same datatable that has a [Job Status] column limited to one of the following 3 entries NEW, JOBS IN PROGRESS or COMPLETED and having that column hidden from view on all gridviews
Top grid showing only NEW jobs
Middle grid showing only JOBS IN PROGRESS
Bottom grid showing only COMPLETED jobs
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Jul 22, 2009
I have a dataset which I load three tables into from the database. Each of these three tables are related by the AccountNo. On two of the tables I specify this field as a foreign key constraint with the appropriate cascading flags. However when I scroll through the list of companies with my combo box. Only the one table is having its values change on the form whereas the other tables remain static/unchanged.[code]...
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