Assembly: System.Data (in system.data.dll)
'Declaration Property DeleteCommand As IDbCommand 'Usage Dim instance As IDbDataAdapter Dim value As IDbCommand value = instance.DeleteCommand instance.DeleteCommand = value
/** @property */ IDbCommand get_DeleteCommand () /** @property */ void set_DeleteCommand (IDbCommand value)
function get DeleteCommand () : IDbCommand function set DeleteCommand (value : IDbCommand)
Property ValueAn IDbCommand used during Update to delete records in the data source for deleted rows in the data set.
During Update, if this property is not set and primary key information is present in the DataSet, the DeleteCommand can be generated automatically if you set the SelectCommand property of a .NET Framework data provider. Then, any additional commands that you do not set are generated by the CommandBuilder. This generation logic requires key column information to be present in the DataSet. For more information see Automatically Generated Commands.
When DeleteCommand is assigned to a previously created IDbCommand, the IDbCommand is not cloned. The DeleteCommand maintains a reference to the previously created IDbCommand object.
The following example creates an instance of the inherited OleDbDataAdapter class, and sets the SelectCommand and DeleteCommand properties. It assumes you have already created an OleDbConnection object.
Public Shared Function CreateCustomerAdapter( _ connection As OleDbConnection) As OleDbDataAdapter Dim dataAdapter As OleDbDataAdapter = New OleDbDataAdapter() Dim command As OleDbCommand Dim parameter As OleDbParameter ' Create the SelectCommand. command = New OleDbCommand("SELECT CustomerID FROM Customers " & _ "WHERE Country = ? AND City = ?", connection) command.Parameters.Add("Country", OleDbType.VarChar, 15) command.Parameters.Add("City", OleDbType.VarChar, 15) dataAdapter.SelectCommand = command ' Create the DeleteCommand. command = New OleDbCommand( _ "DELETE * FROM Customers WHERE CustomerID = ?", _ connection) parameter = command.Parameters.Add( _ "CustomerID", OleDbType.Char, 5, "CustomerID") parameter.SourceVersion = DataRowVersion.Original dataAdapter.DeleteCommand = command Return dataAdapter End Function
Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter EditionThe Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.