System.Data.OleDb Namespace   OleDbCommand Class

Executes an SQL statement against the Connection and returns the number of rows affected.

[ VB ]
NotOverridable Public Function ExecuteNonQuery ( ) As Integer

[ C# ]
public int ExecuteNonQuery ( );

[ C++ ]
public: __sealed int ExecuteNonQuery ( );

[ C++ ]
public function ExecuteNonQuery ( ) : int;

The number of rows affected.

IDbCommand.ExecuteNonQuery

You can use the ExecuteNonQuery to perform catalog operations ( for example, querying the structure of a database or creating database objects such as tables ), or to change the data in a database without using a DataSet by executing UPDATE, INSERT, or DELETE statements.

Although the ExecuteNonQuery does not return any rows, any output parameters or return values mapped to parameters are populated with data.

For UPDATE, INSERT, and DELETE statements, the return value is the number of rows affected by the command. For all other types of statements, the return value is -1.

The following example illustrates using the ExecuteNonQuery method.

void ExecuteNonQueryDemo ( string query, string connString ) {
   OleDbConnection myConn = new OleDbConnection ( connString );
   OleDbCommand myCommand = new OleDbCommand ( query, myConn );
   myCommand.Connection.Open ( );
   myCommand.ExecuteNonQuery ( );
   myConn.Close ( );
}

Public Sub ExecuteNonQueryDemo ( query As String, connString As String )
   Dim myConn As New OleDbConnection ( connString )
   Dim myCommand As New OleDbCommand ( query, myConn )
   myCommand.Connection.Open ( )
   myCommand.ExecuteNonQuery ( )
   myConn.Close ( )
End Sub

OleDbCommand Members