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The following examples demonstrate how to perform updates to modified rows by explicitly setting the Private Sub Adapter Update(By Val connection String As String) Using connection As Sql Connection = New Sql Connection( _ connection String) Dim adapter As Sql Data Adapter = New Sql Data Adapter( _ "SELECT Category ID, Category Name FROM dbo. Update Command = New Sql Command( _ "UPDATE Categories SET Category Name = @Category Name " & _ "WHERE Category ID = @Category ID", connection) adapter.
Fill(category Table) Dim category Row As Data Row = category Table.
Select Command = select CMD Dim cust CB As Sql Command Builder = New Sql Command Builder(cust DA) cust CB. Quote Suffix = "]" Dim d Row As Data Row Dim d Table As Data Table obj Conn.
Open() Dim cust DS As Data Set = New Data Set cust DA.
Add("Column3", column3Ole Db Type, column3Length, "Column3") d Ap1.
For the latest documentation on Visual Studio 2017, see Save data back to the database on docs. If you modify that data, it's a good practice to save those changes back to the database.
Command Timeout = 30 Dim cust DA As Sql Data Adapter = New Sql Data Adapter cust DA. Add("Column1", column1Ole Db Type, column1Length, "Column1") d Ap1. Add("Column2", column2Ole Db Type, column2Length, "Column2") d Ap1. This allows you to maximize the performance of your ADO. For example, if a primary key value for an existing row is updated, and a new row has been added with the new primary key value as a foreign key, it is important to process the update before the insert. By specifying a subset of rows to be updated, you can control the order in which inserts, updates, and deletes are processed. NET application by specifying command syntax at design time and, where possible, through the use of stored procedures. For example, the following code ensures that the deleted rows of the table are processed first, then the updated rows, and then the inserted rows.
Fill(cust DS, "dwbprocref") For Each d Row In cust DS.