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For example, if you call Delete on a row on the Data Set, then when Update is called on the Data Adapter, the Delete Command of the Data Adapter will be called using the particular row in the Data Set.
Note: Keep in mind that this Update is different than a SQL UPDATE statement.
Note: The Tables member of Data Set represents all Data Table objects attached to a Data Set. Adding a Data Row to a Data Table Dim row1 As Data Row = ds. To test this source code create a Windows application, drop a Data Grid, and three buttons- Insert Command, Update Command, and Delete Command to the form.
Listing 5-46 Creates a new Data Row, sets the data of Data Row members, and adds rows to the table using the Add method of Data Table. Listing 5-48 show the code on the Insert Command button-click event.
Update (ds My Data Set, "My Data Table1") da My Table2.
Update (ds My Data Set, "My Data Table2") da My Table3. The statement it builds is complex, and a bit daunting. This is the old fashioned way of getting data back to the data store, but I think it really is easier and more straight forward than using the Command Builder.
What I am trying to achieve is to periodically (once an hour or on demand ) update 4 of the Data Tables from the Data Base.
The properties of the Sql Data Adapter Object update the database with the data modifications, that are run on a Data Set object.
Listing 5-50 deletes the row with the value Tst ID.
As you can see from the code, I called the Find method to find the row and called the Delete method of the Data Row.
You can then look in the code behind to see what it did and copy and paste it elsewhere or use it directly.
NET Framework data provider to connect to a data source and Command objects to retrieve data from and resolve changes to the data source.
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.