VS 2008 Datagridview, 2 Forms, 1 Database?
Mar 22, 2009
I have searched the forums for an answer to my problem, but I have not found any solution.First of all, I know that the datagridview is "supposed" to automatically refresh when new data is entered, but in my case it does not seem to work.
I am using VS2008, with an Access 2007 database. The database has 2 tables, but I am only trying to work with 1 of those tables.For this project I have 3 forms that I am working with. The main form calls a form that has an embedded datagridview for the 1 table in it.
By double clicking on a row, this form hides (Me.Hide()), and the second form appears where the new data is entered for the row selected.
Once the data is saved from the second form, using "Update", the second form hides, bring me back to the main form once again.
If I then click on the button to call up the form with the datagridview, it appears, but not with the new data on it. If I use the "x" button (top right corner) to close this form, and then click on the button to call the form once more, it appears with the correct data.I guess my question comes down to this. Do I need to not use Me.Hide() on this form, and if so, what would I use to make sure that the next time I show the form the data has been updated?
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Mar 13, 2011
I use vb2010 to create a simple windows form.I have a checkedcombobox which gets its items from a column (titles) from a .mdb database (this works). When I check an item or multiple items in the combobox, I want to display (multiple columns) the title and for example info in a datagridview.
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Oct 13, 2011
I'd like to have an updateable DataGridView that's bound to a database-driven business object. It needs to handle all aspects of CRUD and be sortable and filterable as well.
Most of them simply bind to an object (non-database, manually filled) and do not allow you to Add, Delete, and Edit records. Furthermore, they basically never show how you would perform sorting and filtering.
I think the biggest things I'm not understanding are:
1) How do you make the DataGridView perform additions, deletions, and edits on an object.
2) How do you program your object to handle additions, deletions, and edits. Do you just need methods that use ADO.Net, NHibernate, or Linq to SQL (or any other CRUD handling mechanism)?
3) How to make this filterable and sortable.
Is this overly difficult to do or why am I have so much trouble finding examples for this?
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Jun 10, 2010
I build my project and i got some problems. First i want to print barcode for books(toolstripmenu item). but i cant. here's the code that i found:
[code..]
second problem is printing again. i want to print my MS ACCESS .mdb from child datagridview's records.
third one i want to save and load(with dialogs) my database from main form to child forms' datagridview.and the last one is help provider. i prepare my own .htm help file, when press F1 it opens. but i dont know how to call provider to toolstripmenuitem and help provider keep my computer's path so when i call provider another computer, the programme cant find the path.
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Nov 5, 2009
I have done a dummy project to understand how do i have to deal with database with this new visual studio 2008 using VB. The code autogenerated to save new record in a table is:
Private Sub UtentiBindingNavigatorSaveItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles UtentiBindingNavigatorSaveItem.Click
Me.Validate()
Me.UtentiBindingSource.EndEdit()
Me.TableAdapterManager.UpdateAll(Me.databaseDataSetUtenti)
End Sub
I have created my own login form that try to access the table "utenti" handled on the users form (described before).
[Code]...
The problem is that from this code i cannot "see" new users added from the automatically created databinding of the user form...
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Jan 31, 2010
I just want to simply be able to edit a database directly using a Datagridview. That includes adding new rows, editing existing ones, and deleting rows. So far if I have been able to get one of those actions to work, the others do not. I found the codebank entry by JMC and I am trying to use it to connect to my database. I have a bindingsource, a dataset, and tableadapter created via the designer. Now I need to figure out how to combine all these components.
VB.NET
Imports System.Data.SqlClient
Public Class Form1
Private connection As New SqlConnection(My.Settings.Database1ConnectionString)
Private adapter As New SqlDataAdapter("SELECT ID, Name, Quantity, Unit FROM StockItem", connection)
Private table As New DataTable
[Code] .....
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Mar 24, 2011
I have an application that saves and loads data to and from a database, via a DataGridView.
Originally, I setup another form that accepts the data and when the "Search" button is pressed, it closes and loads it into the main form's database.
But, my boss doesn't want to do it this way. I actually like this new method better... but I can't get it to work
The DataGridView has 14 columns. The user should be able to fill out 1 or all of the cells and that data should be used to complete the search, which is then populated into the DataGridView.
I have all of that figure out, with the exception of figuring out when to call my search method.
I tried capturing the "Enter" key press in the KeyDown event, but that only works when the DataGridView itself has focus, and not when a row, column, or cell does.
I then tried the RowLeave and RowValidated events, but then I get an exception stating that I can't call that method from those events.
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Feb 12, 2010
I'm using DataAdaptors to pull data into a DataGridView. I want to make changes to the data via my DataGridView and then update the database when the user clicks the 'Update' button, but I can't figure it out. Below is my code.
Dim SQLconnetionString As String
Dim SQLconnection As SqlConnection
Dim SQLCommand As SqlCommand
[Code]....
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Nov 5, 2009
I'm writing my first Vb application and have come to a grinding halt... I've created a windows form which has got a datagridview (which is populated by a tableadapter and a dataset generated from a SQL stored procedure) with two columns (Product and Qty), I'm populating the Product Column using a Stored Procedure, the user then adds the quantity. Once they've finished filling everything out they'll then hit a save button and I then need to insert both columns (along with a reference number which I'm getting from a text box) into a table on a sql server.
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May 11, 2009
I'm using a DataGridView in a Windows Forms application to update a table in my SQL CE database. The code runs without error; however, it appears that the database table is not being updated. I had this working at one point, now it is no longer working.
Private Sub BtnCommitChanges_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles BtnCommitChanges.Click
If Me.CLCitiesDataSet.HasChanges = False Then Exit Sub 'Exit sub if no changes to dataset
Dim SQLCommand As New SqlCeCommand("SELECT * FROM Cities")
[code]....
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Dec 21, 2011
row in datagridview not come all when query from database (sql server 2008)?
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Jul 22, 2011
How to save DataGridView content into a database?
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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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Aug 1, 2010
Busy to connect a secure access 2003 database (with a mdw file) to a datagridview but we don't know where we have to place the mdw file in the (advanced) properties
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Aug 24, 2009
Well, just struggeling to decice on which would suit my situation best. I am developing a simple app to show a log of radio messages. Should I display these in a listview or in a datagridview? What is the actual difference?
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Sep 25, 2009
I had done this by using the query builder (in VS Studio) but soon found out thay I gain no points by doing it this way as I am not using any code. I have tried to adapt the code I had to insert data into my database, just changing the SQL sintaxa and some other bits, but it is not working yet. Well, it gives results, but I think it is still geting the results from the query I had built using the query builder. Here is the code I've got so far:
Public Class Form2
Private Sub btn_search_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btn_search.Click
Dim str_search As String = txt_search.Text
Dim str_dob As String = txt_dob.Text
[code]....
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Nov 16, 2011
I've got a question below:load data from a table in database into a datagridview,make change in datagridview,and use update function to update change back to tablebut 13 changes, only 12 being update back to databaseonly the top row on the datagridview not being update??
For Each orow As DataGridViewRow In DataGridView1.Rows
orow.Cells(1).Value = TextBox1.Text
Next
[code]......
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Dec 12, 2010
If using a datagridview to update a database and the datagridview is bound to a bindingsource which has its datasource as the table to be updated: where dshould you place the tableadapter.update(mydatarow)
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Jun 3, 2010
I m working on an school management application, i design the database in access2003 and forms in vb.net2005. but i dont have any idea about the database conectivity. with the help of a book to connect with the db but i cannot save the data in the mdb file. in my application 1 add the followin buttons add new record modify record delete search using id or enrolment no.
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Jul 28, 2009
just wondering if it is possible to add a method to all forms in my project without having to do it on one form and Inherit all my other forms from that one
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Apr 21, 2010
i have a problem with trying to get 2 forms to close at different times using a timer on each of the 2 forms.
This is my form layout:
Quote:
frmMain
Frm1
Frm2
Frm1 and Frm2 are identical to each other. FrmMain has 2 buttons on it. One button to call Frm1 and the other to call Frm2.Frm1 and Frm2 each has a timer. It counts down to 0 and then does a .close(). However, if i pause between clicking the second button they both seem to always disappears at the same time.I would do something like this...
Click on the first button (showing the Frm1 form)
wait about 10 secs...Click on the second button (showing the Frm2 form)they both are shown on screen...hen they both disappear at the same time.... which shouldn't happen since i clicked the Frm2 box 10 seconds AFTER Frm1... So Frm1 should hide before Frm2 does...but it does not.
[code]....
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Dec 13, 2009
Here's my scenario...I have 2 datagridviews in my Windows Application.When I click on a row in the parentgrid, a child grid shows up with data regarding to which I have clicked.both grids are from the Database (SQL2005) only. In the child grid am using a combobox and that is my headache...this part is working fine and the problem is in the child grid.
When I try to add a new data (at the sametime into the Parent and Child) its working fine and am able to insert data into the tables...
But when I want to edit a data in the child grid, the combobox is making problem.I selected a value from the combobox and go to the next cell OMG the combobox value changed to the corresponding ID of that instead of showing the text.But I neglected this as I was getting the correct value tat has to be inserted into the DB.
Now while editing the main data am tryn to add a new child data ( assume that there are few child data already and am adding a new one).When I click save the values in the combobox are retreived as string and am not able to update the database.This happens to the rows that were already there.the reason is because of the strange behaviour of Combobox in the grid..
Am after this for 2 days and still after this..
Also am populating the combobox from the DB only.
Find the code below, how I did the combobox population
CODE:
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Mar 23, 2011
How to pass a row of datagridview of form1 to the other form2 datagridview
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Jun 20, 2011
I have a datagrid that is populated by a user starting and ending value. Each record has two check boxes. Here is an example;
Starting: ABC001
Ending: ABC004
Datagrid;
[code]....
The second problem; The user can move between different forms (forms that do not display the datagrid). Now what I did is create a class;
Public Class Class1
Public userData As DataGridView
End Class
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Dec 7, 2010
I have a Windows form that has a datagridview on it. I populate it with records from a database. I have a checkbox on each row. Then I have a textbox on the form outside of the datagridview. Each time a checkbox is checked I want to count it and show it in the text box. Each time a checkbox is unchecked I want it to subtract the count.
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May 13, 2010
How to add a toolbar or a pagingbar to a DataGridView in my windows form in vb.net. Any ideas about grid filtering,adding filters to grid columns.
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May 4, 2011
can I subtract a value from the value in the previous cell or cell above.I have created a stopwatch, and previous to using a datagridview, ive been using labels with this
If LapTimeLabel1.Text = "0:0.000" Then
LapTimeLabel1.Text = StopwatchLabel.Text
lapTime = DateTime.Now()
[code].....
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Jan 19, 2010
Dear Experts
Table gpass has data as
gate-----date-----c----bno----acccode----tittle----weight-------qty
1----18/01/2010---a----2--------2----------abc-----10.00-------15
[Code].....
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Jan 1, 2010
Datagridview1 has three columns as S.No-------Porducts--------Price
When I enter s.no in column1 then product name and price must display in relevant columns as
S.No-------Porducts--------Price 1------------Mango---------12
I wrote folloiwng codes as example
[Code]...
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Oct 9, 2011
I am trying to export a datagridview to excel.
Right now, I am using:
Imports Excel = Microsoft.Office.Interop.Excel
Imports System.Data.OleDb
Imports System.IO.File
[Code].....
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