' Create a suitable DataAdapter object for a given connection object.' Requires Imports for System.Data, System.Data.Common, System.Data.OleDb,' System.Data.SqlClient, System.Data.Odbc and System.Data.OracleClient'' Example:' Dim da As DbDataAdapter = CreateDataAdapter("SELECT * FROM Titles", cn)Function CreateDataAdapter(ByVal sql As String, ByVal cn As IDbConnection) As _ DbDataAdapter If TypeOf cn Is OleDbConnection Then ' Create an OleDbDataAdapter and initialize its properties. Dim da As New OleDbDataAdapter(sql, DirectCast(cn, OleDbConnection)) Dim cb As New OleDbCommandBuilder(da) da.UpdateCommand = cb.GetUpdateCommand() da.DeleteCommand = cb.GetDeleteCommand() da.InsertCommand = cb.GetInsertCommand() Return da ElseIf TypeOf cn Is SqlConnection Then ' Create an SqlDataAdapter and initialize its properties. Dim da As New SqlDataAdapter(sql, DirectCast(cn, SqlConnection)) Dim cb As New SqlCommandBuilder(da) da.UpdateCommand = cb.GetUpdateCommand() da.DeleteCommand = cb.GetDeleteCommand() da.InsertCommand = cb.GetInsertCommand() Return da ElseIf TypeOf cn Is OdbcConnection Then ' Create an SqlDataAdapter and initialize its properties. Dim da As New OdbcDataAdapter(sql, DirectCast(cn, OdbcConnection)) Dim cb As New OdbcCommandBuilder(da) da.UpdateCommand = cb.GetUpdateCommand() da.DeleteCommand = cb.GetDeleteCommand() da.InsertCommand = cb.GetInsertCommand() Return da ElseIf TypeOf cn Is OracleConnection Then ' Create an SqlDataAdapter and initialize its properties. Dim da As New OracleDataAdapter(sql, DirectCast(cn, OracleConnection)) Dim cb As New OracleCommandBuilder(da) da.UpdateCommand = cb.GetUpdateCommand() da.DeleteCommand = cb.GetDeleteCommand() da.InsertCommand = cb.GetInsertCommand() Return da Else Throw New ArgumentException End IfEnd Function
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