Unbound mode is suitable for displaying relatively small amounts of data that you manage programmatically. Click Dim connection String As String = "Data Source=.; Initial Catalog=pubs; Integrated Security=True" Dim sql As String = "SELECT * FROM Stores" Dim connection As New Sql Connection(connection String) connection.
Virtual mode gives you a higher degree of control by allowing you to wait until a cell is actually being displayed to provide the value it will contain. Sql Client Public Class Form1 Dim s Command As Sql Command Dim s Adapter As Sql Data Adapter Dim s Builder As Sql Command Builder Dim s Ds As Data Set Dim s Table As Data Table Private Sub load_btn_Click(By Val sender As System. Open() s Command = New Sql Command(sql, connection) s Adapter = New Sql Data Adapter(s Command) s Builder = New Sql Command Builder(s Adapter) s Ds = New Data Set() s Adapter.
Committing all the data including the unchanged data is a waste of resources. Otherwise next time when we ask for changes we will be in trouble.
So we use the following nifty bit of code to extract only the changes that we did.
The following source code illustrate how to connect a Data Grid View to a database and addnew/update or delete the database values from Data Grid View.
I have observed that the Cell End Edit event is the last event to fire when you leave a datagridview. If the row index is greater than the number of rows in the underlying datatable, I add a new datarow to the underlying datatable. Accept Changes() End If End Sub e is the datagridview cell event arg for the Cell End Edit event of the datagridview.Also, can you tell me the best book to buy that fully explains the Data Grid View control? Interesting that not a lot of people are using the datagridview object yet. In my example (from an app I am currently working on) I add data to the new row to the datagridview. Data Grid View Cell Event Args) Handles dgr Mod Sub Detail. This was mentioned in another topic in this group, and in a book "Programming VB. I don't understand the whole thing, but I'm going to keep track of your thoughts to see if I understand them better later on.