OracleCommand.ExecuteNonQuery Method
Definition
Important
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Executes an SQL statement against the Connection and returns the number of rows affected.
public:
virtual int ExecuteNonQuery();public:
override int ExecuteNonQuery();public int ExecuteNonQuery ();public override int ExecuteNonQuery ();abstract member ExecuteNonQuery : unit -> int
override this.ExecuteNonQuery : unit -> intoverride this.ExecuteNonQuery : unit -> intPublic Function ExecuteNonQuery () As IntegerPublic Overrides Function ExecuteNonQuery () As IntegerReturns
For UPDATE, INSERT, and DELETE statements, the return value is the number of rows affected by the command. For CREATE TABLE and DROP TABLE statements, the return value is 0. For all other types of statements, the return value is -1.
Implements
Exceptions
Examples
The following example creates an OracleCommand and then executes it by using ExecuteNonQuery. The example is passed a string that is an SQL statement (such as UPDATE, INSERT, or DELETE) and a string to use to connect to the database.
public void CreateOracleCommand(string myExecuteQuery, string connectionString)
{
using (OracleConnection connection = new OracleConnection(connectionString))
{
OracleCommand command = new OracleCommand(myExecuteQuery, connection);
command.Connection.Open();
command.ExecuteNonQuery();
}
}
Public Sub CreateOracleCommand(ByVal myExecuteQuery As String, _
ByVal connectionString As String)
Using connection As New OracleConnection(connectionString)
Dim command As New OracleCommand(myExecuteQuery, connection)
command.Connection.Open()
command.ExecuteNonQuery()
End Using
End Sub
Remarks
You can use 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 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 CREATE TABLE and DROP TABLE statements, the return value is 0. For all other types of statements, the return value is -1. If a rollback occurs, the return value is also -1.
