OleDbCommand.ExecuteNonQuery Method
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Executes an SQL statement against the Connection and returns the number of rows affected.
public:
override int ExecuteNonQuery();
public:
virtual int ExecuteNonQuery();
public override int ExecuteNonQuery ();
public int ExecuteNonQuery ();
override this.ExecuteNonQuery : unit -> int
abstract member ExecuteNonQuery : unit -> int
override this.ExecuteNonQuery : unit -> int
Public Overrides Function ExecuteNonQuery () As Integer
Public Function ExecuteNonQuery () As Integer
Returns
The number of rows affected.
Implements
Exceptions
The connection does not exist.
-or-
The connection is not open.
-or-
Cannot execute a command within a transaction context that differs from the context in which the connection was originally enlisted.
Examples
The following example creates an OleDbCommand and then executes it 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 data source.
static private void CreateOleDbCommand(
string queryString, string connectionString)
{
using (OleDbConnection connection = new
OleDbConnection(connectionString))
{
connection.Open();
OleDbCommand command = new
OleDbCommand(queryString, connection);
command.ExecuteNonQuery();
}
}
Private Sub CreateOleDbCommand( _
ByVal queryString As String, ByVal connectionString As String)
Using connection As New OleDbConnection(connectionString)
connection.Open()
Dim command As New OleDbCommand(queryString, connection)
command.ExecuteNonQuery()
End Using
End Sub
Remarks
You can use the ExecuteNonQuery to perform catalog operations, for example, to query the structure of a database or to create 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 returns no 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. If a rollback occurs, the return value is also -1.
Applies to
See also
Feedback
https://aka.ms/ContentUserFeedback.
Binnenkort: Gedurende 2024 worden GitHub Issues uitgefaseerd als het feedbackmechanisme voor inhoud. Dit wordt vervangen door een nieuw feedbacksysteem. Ga voor meer informatie naar:Feedback verzenden en bekijken voor