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Posted by / 21-Dec-2016 07:58

Ado net updating

The way the architecture works with the Data Adapter is that you can make any changes you want to the filled Data Set, and it won't affect the database until you call the Update method.When Update is called, the Data Adapter will attempt to execute each query (UPDATE, INSERT, DELETE) on every row of the Data Set that has been updated, inserted, and deleted. Net with Table Value Parameter code for updating multiple rows of 10,000 rows to Entity Framework as in the code below. Net TVP less than 1 second while Entity Framework took 2 minutes : 34 seconds.

You must explicitly set the commands before calling event and setting the Status to Skip Current Row. NVar Char, 15, "Category Name") Dim parameter As Sql Parameter = _ adapter.

As you saw in the Data Table, Data Row, and Data Column sections at the beginning of this article, you can use the Delete method of a Data Row to delete a row.

The Add New method of the Data Table adds a row to a Data Table.

and when you're ready, you reconnect to the database and merge your locally cached changes back to the original database. Net If you recall, you use the Data Adapter's Fill() method to read the contents of a table in a database and fill our locally-cached Data Table object.

So after you've added, deleted, and modified the data in the Data Table, it's time to write those changes back...

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encounters a change to a Data Row, it uses the Insert Command, Update Command, or Delete Command to process the change. Rows(0) category Row("Category Name") = "New Beverages" adapter. Write Line("Rows after update.") Dim row As Data Row For Each row In category Table. Write Line(": ", row(0), row(1)) Next End Using End Sub either by returning the auto-increment value as an output parameter of a stored procedure and mapping that to a column in a table, by returning the auto-increment value in the first row of a result set returned by a stored procedure or SQL statement, or by using the are sent to the data source is important.