Session.ExecuteNonQuery(String, String[], Object[]) Method

Executes the specified SQL statement and returns the number of rows affected.

Namespace: DevExpress.Xpo

Assembly: DevExpress.Xpo.v24.2.dll

Declaration

C#

public int ExecuteNonQuery(
    string sql,
    string[] parameterNames,
    object[] parameterValues
)

VB.NET

Public Function ExecuteNonQuery(
    sql As String,
    parameterNames As String(),
    parameterValues As Object()
) As Integer

Parameters

Name	Type	Description
sql	String	Specifies an SQL statement.
parameterNames	String[]	Specifies parameter names.
parameterValues	Object[]	An array of objects specifying parameters to pass to the database server along with the query.

Returns

Type	Description
Int32	The number of rows affected by the executed SQL statement.

Remarks

Use ExecuteNonQuery to execute SQL statements that do not produce result sets, such as UPDATE, INSERT, and DELETE statements.

The example below demonstrates how to use this method. Here, session is the Session instance.

C#

using DevExpress.Xpo;
// ...
public void UpdateOrderDetails() {
    const string queryString = 
        @"UPDATE [Northwind].[dbo].[Order Details] 
        SET [Discount] = @p1 WHERE [UnitPrice] > @p2";
    int rowsAffected = session.ExecuteNonQuery(queryString,
        new string[] { "p1", "p2" },
        new object[] { 0.15, 100 }
    );
}

VB.NET

Imports DevExpress.Xpo
' ...
Public Sub UpdateOrderDetails()
    Const queryString As String = "UPDATE [Northwind].[dbo].[Order Details] 
        SET [Discount] = @p1 WHERE [UnitPrice] > @p2"
    Dim rowsAffected As Integer = session.ExecuteNonQuery(queryString, _
        New String() { "p1", "p2" }, _
        New Object() { 0.15, 100 })
End Sub

Note that a format of parameter names in a SQL statement depends on the ADO.NET provider and database you use.

To learn more about executing SQL statements in XPO, refer to Direct SQL Queries.

Note

The ExecuteNonQuery method sends statements directly, so the correct statement syntax depends on a particular database server.