The data adapter fills a Data Set object when reading the data and writes in a single batch when persisting changes back to the database.
I am doing all these steps at the same time, but when I try to update my database, it is not happening. When the click event on the button save happens, I do this. Update(Data Table) and I know that I am missing something. Try this with your Data Table and Data Adapter: (untested) Dim changes As Data Table Try Dim cmdbuilder As Ole Db Command Builder = New Ole Db Command Builder(Data Adapter) cmdbuilder. Update(Data Table) ' use your update statement or the following two statements changes = Data Table. In this case I added, deleted, and modified a list of books wrote on a paper.
I am needing to update a database Access2007, with a Data Table where I have done Adding Rows, Modifying Rows, and Deleting rows. How can I update my database from a Data Table, using 2010 and a database Access 2007? I know update the data Table, but when I try to update the Data Base, I know that I am missing something. Update(Data Table)." id="ctl00_m_m_i_ctl00_gr_ctl07_bestanswerbody" class="textarea-bestanswerhidden" name="bestanswerbody" answerbody Id="5367784" / You have to add commandbuilder to your code. But each thing will happen, before the data is stored in the database. We have a list of books wrote on the paper, and we want to add a couple of books more, but later we discovered that one book is not needed, and 2 seconds later, we see that the name of a book, is wrong, spell mistakes.
That means if there are 100 rows to be updated the Sql Data Adapter will execute 100 separate operations against the database.
As you might have guessed this is not efficient while dealing with large number of rows.
Sometimes the data you work with is primarily read-only and you rarely need to make changes to the underlying data source Some situations also call for caching data in memory to minimize the number of database calls for data that does not change.
The data adapter makes it easy for you to accomplish these things by helping to manage data in a disconnected mode.
If we set the batch size to 10 then Row Updating will be raised for 100 times where as Row Updated will be raised only for 10 times.
Following code illustrates use of this feature: Notice how we have attached event handlers to the Row Updating and Row Updated events.
The procedures in this section describe how to do the following: You can import data adapters from your local network or from the Marketplace.