ExecuteNonQuery Method

OracleCommand.ExecuteNonQuery Method ()

 

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

Namespace:   System.Data.OracleClient
Assembly:  System.Data.OracleClient (in System.Data.OracleClient.dll)

Public Overrides Function ExecuteNonQuery As Integer

Return Value

Type: System.Int32

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.

Exception Condition
InvalidOperationException

The connection does not exist.

-or-

The connection is not open.

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.

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 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

.NET Framework
Available since 1.1
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