OleDbCommand.Connection Property

Definition

Namespace:

System.Data.OleDb

Assembly:

System.Data.OleDb.dll

Package:

System.Data.OleDb v9.0.0

Source:

OleDbCommand.cs

Gets or sets the OleDbConnection used by this instance of the OleDbCommand.

public:
 property System::Data::OleDb::OleDbConnection ^ Connection { System::Data::OleDb::OleDbConnection ^ get(); void set(System::Data::OleDb::OleDbConnection ^ value); };

public System.Data.OleDb.OleDbConnection? Connection { get; set; }

member this.Connection : System.Data.OleDb.OleDbConnection with get, set

Public Property Connection As OleDbConnection

Property Value

OleDbConnection

The connection to a data source. The default value is null.

Exceptions

InvalidOperationException

The Connection property was changed while a transaction was in progress.

Examples

The following example creates an OleDbCommand and sets some of its properties.

public void CreateOleDbCommand()
{
   string queryString = "SELECT * FROM Categories ORDER BY CategoryID";
   OleDbCommand command = new OleDbCommand(queryString);
   command.Connection = new OleDbConnection
      ("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=NWIND_RW.MDB");
   command.CommandTimeout = 20;
}

Public Sub CreateOleDbCommand()
    Dim queryString As String = _
       "SELECT * FROM Categories ORDER BY CategoryID"
    Dim command As New OleDbCommand(queryString)
    command.Connection = New OleDbConnection _
       ("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=NWIND_RW.MDB")
    command.CommandTimeout = 20
End Sub

Remarks

You cannot set the Connection, CommandType and CommandText properties if the current connection is performing an execute or fetch operation.

If you set Connection while a transaction is in progress and the Transaction property is not null, an InvalidOperationException is generated. If the Transaction property is not null and the transaction has already been committed or rolled back, Transaction is set to null.

See also

• Working with Commands