Updating database using dataadapter

The Find method returns the row with Customer Id = Tst ID.After that I assign values of the row and call the Data Adapter's Update method. Updating data using the Data Adapter's Update method sender, System. Listing 5-50 deletes the row with the value Tst ID.As you can see from listing 5-48, I created a filled Data Set and created a new Data Row using the Data Table. After creating a Data Row, I set its column values and called the Data Adapter's Update method and displayed data in the Data Grid.I added new rows to the Customers table with Customer Id, Customer Name, and Company Name (named Tst ID, Lana Jackob, and Mindcracker Inc., respectively). Adding data using a Data Adapter's Update method Listing 5-49 shows an example that edits row data.When an application calls the might execute a DELETE statement, followed by an INSERT statement, and then another DELETE statement, due to the ordering of the rows in the Data Table.

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' Assumes that order Connection is a valid Ole Db Connection object.

Customers" Dim adapter As Sql Data Adapter = New Sql Data Adapter( _ query String, connection) Dim customers As Data Set = New Data Set adapter. Sql Data Adapter cust Adapter = new Sql Data Adapter( "SELECT * FROM dbo. An auto-incrementing integer column will still be added to the table, but no child table will be created or filled, and no relation will be created.

Fill(customers, "Customers") // Assumes that connection is a valid Sql Connection object. Customers", customer Connection); Ole Db Data Adapter ord Adapter = new Ole Db Data Adapter( "SELECT * FROM Orders", order Connection); Data Set customer Orders = new Data Set(); cust Adapter. Fill(customer Orders, "Orders"); Data Relation relation = customer Orders. The following example uses the MSData Shape Provider to generate a chapter column of orders for each customer in a list of customers.

to retrieve all of a table takes time, especially if there are many rows in the table.

This is because accessing the database, locating and processing the data, and then transferring the data to the client is time-consuming. For most applications, these provide a convenient representation of data source information.

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