SqlRowUpdatedEventArgs Clase

Definición

Proporciona datos para el evento RowUpdated.Provides data for the RowUpdated event.

public ref class SqlRowUpdatedEventArgs sealed : System::Data::Common::RowUpdatedEventArgs
public sealed class SqlRowUpdatedEventArgs : System.Data.Common.RowUpdatedEventArgs
type SqlRowUpdatedEventArgs = class
    inherit RowUpdatedEventArgs
Public NotInheritable Class SqlRowUpdatedEventArgs
Inherits RowUpdatedEventArgs
Herencia
SqlRowUpdatedEventArgs

Ejemplos

En el ejemplo siguiente se muestra cómo utilizar los eventos RowUpdating y RowUpdated.The following example shows how to use both the RowUpdating and RowUpdated events.

El evento RowUpdating devuelve este resultado:The RowUpdating event returns this output:

Argumentos de evento: (Command = System. Data. SqlClient. SqlCommand commandType = 2 Status = 0)Event Arguments: (command=System.Data.SqlClient.SqlCommand commandType=2 status=0)

El evento RowUpdated devuelve este resultado:The RowUpdated event returns this output:

Argumentos de evento: (Command = System. Data. SqlClient. SqlCommand commandType = 2 recordsAffected = 1 Row = System. Data. DataRow [37] Status = 0)Event Arguments: (command=System.Data.SqlClient.SqlCommand commandType=2 recordsAffected=1 row=System.Data.DataRow[37] status=0)

   // handler for RowUpdating event
   private static void OnRowUpdating(object sender, SqlRowUpdatingEventArgs e) 
   {
       PrintEventArgs(e);
   }

   // handler for RowUpdated event
   private static void OnRowUpdated(object sender, SqlRowUpdatedEventArgs e) 
   {
       PrintEventArgs(e);
   }

   public static int Main() 
   {
       const string connectionString = 
                 "Integrated Security=SSPI;database=Northwind;server=MSSQL1";
       const string queryString = "SELECT * FROM Products";

       // create DataAdapter
       SqlDataAdapter adapter = new SqlDataAdapter(queryString, connectionString);
       SqlCommandBuilder builder = new SqlCommandBuilder(adapter);

       // Create and fill DataSet (select only first 5 rows)
       DataSet dataSet = new DataSet();
       adapter.Fill(dataSet, 0, 5, "Table");

       // Modify DataSet
       DataTable table = dataSet.Tables["Table"];
       table.Rows[0][1] = "new product";

       // add handlers
       adapter.RowUpdating += new SqlRowUpdatingEventHandler( OnRowUpdating );
       adapter.RowUpdated += new SqlRowUpdatedEventHandler( OnRowUpdated );

       // update, this operation fires two events 
       // (RowUpdating/RowUpdated) per changed row 
       adapter.Update(dataSet, "Table");

       // remove handlers
       adapter.RowUpdating -= new SqlRowUpdatingEventHandler( OnRowUpdating );
       adapter.RowUpdated -= new SqlRowUpdatedEventHandler( OnRowUpdated );
       return 0;
   }

   private static void PrintEventArgs(SqlRowUpdatingEventArgs args) 
   {
       Console.WriteLine("OnRowUpdating");
       Console.WriteLine("  event args: ("+
           " command=" + args.Command + 
           " commandType=" + args.StatementType + 
           " status=" + args.Status + ")");
   }

   private static void PrintEventArgs(SqlRowUpdatedEventArgs args) 
   {
       Console.WriteLine("OnRowUpdated");
       Console.WriteLine( "  event args: ("+
           " command=" + args.Command +
           " commandType=" + args.StatementType + 
           " recordsAffected=" + args.RecordsAffected + 
           " status=" + args.Status + ")");
   }
    ' handler for RowUpdating event
    Private Shared Sub OnRowUpdating(sender As Object, e As SqlRowUpdatingEventArgs)
        PrintEventArgs(e)
    End Sub 

    ' handler for RowUpdated event
    Private Shared Sub OnRowUpdated(sender As Object, e As SqlRowUpdatedEventArgs)
        PrintEventArgs(e)
    End Sub 
    
    'Entry point which delegates to C-style main Private Function
    Public Overloads Shared Sub Main()
        System.Environment.ExitCode = Main(System.Environment.GetCommandLineArgs())
    End Sub
    
    Overloads Public Shared Function Main(args() As String) As Integer
        Const connectionString As String = _
            "Integrated Security=SSPI;database=Northwind;server=MSSQL1"
        Const queryString As String = "SELECT * FROM Products"
        
        ' create DataAdapter
        Dim adapter As New SqlDataAdapter(queryString, connectionString)
        Dim builder As New SqlCommandBuilder(adapter)
        
        ' Create and fill DataSet (select only first 5 rows)
        Dim dataSet As New DataSet()
        adapter.Fill(dataSet, 0, 5, "Table")
        
        ' Modify DataSet
        Dim table As DataTable = dataSet.Tables("Table")
        table.Rows(0)(1) = "new product"
        
        ' add handlers
        AddHandler adapter.RowUpdating, AddressOf OnRowUpdating
        AddHandler adapter.RowUpdated, AddressOf OnRowUpdated
        
        ' update, this operation fires two events 
        '(RowUpdating/RowUpdated) per changed row 
        adapter.Update(dataSet, "Table")
        
        ' remove handlers
        RemoveHandler adapter.RowUpdating, AddressOf OnRowUpdating
        RemoveHandler adapter.RowUpdated, AddressOf OnRowUpdated
        Return 0
    End Function 
    
    
    Overloads Private Shared Sub PrintEventArgs(args As SqlRowUpdatingEventArgs)
        Console.WriteLine("OnRowUpdating")
        Console.WriteLine("  event args: (" & " command=" & args.Command.CommandText & _
           " commandType=" & args.StatementType & " status=" & args.Status & ")")
    End Sub 
    
    
    Overloads Private Shared Sub PrintEventArgs(args As SqlRowUpdatedEventArgs)
        Console.WriteLine("OnRowUpdated")
        Console.WriteLine("  event args: (" & " command=" & args.Command.CommandText & _
           " commandType=" & args.StatementType & " recordsAffected=" & _
           args.RecordsAffected & " status=" & args.Status & ")")
    End Sub 
End Class 

Comentarios

El evento RowUpdated se genera cuando se completa un Update en una fila.The RowUpdated event is raised when an Update to a row is completed.

Cuando se usa Update, se producen dos eventos para cada fila de datos actualizada.When using Update, there are two events that occur for each data row updated. El orden de ejecución es el siguiente:The order of execution is as follows:

  1. Los valores de la DataRow se mueven a los valores de parámetro.The values in the DataRow are moved to the parameter values.

  2. Se genera el evento OnRowUpdating.The OnRowUpdating event is raised.

  3. Se ejecuta el comando.The command executes.

  4. Si el comando se establece en FirstReturnedRecord, y el primer resultado devuelto se coloca en el DataRow.If the command is set to FirstReturnedRecord, and the first returned result is placed in the DataRow.

  5. Si hay parámetros de salida, se colocan en el DataRow.If there are output parameters, they are placed in the DataRow.

  6. Se genera el evento OnRowUpdated.The OnRowUpdated event is raised.

  7. Se llama a AcceptChanges.AcceptChanges is called.

Constructores

SqlRowUpdatedEventArgs(DataRow, IDbCommand, StatementType, DataTableMapping)

Inicializa una nueva instancia de la clase SqlRowUpdatedEventArgs.Initializes a new instance of the SqlRowUpdatedEventArgs class.

Propiedades

Command

Obtiene o establece el objeto SqlCommand que se ejecuta cuando se llama al método Update(DataSet).Gets or sets the SqlCommand executed when Update(DataSet) is called.

Errors

Obtiene todos los errores generados por el proveedor de datos de .NET Framework al ejecutar la propiedad Command.Gets any errors generated by the .NET Framework data provider when the Command was executed.

(Heredado de RowUpdatedEventArgs)
RecordsAffected

Obtiene el número de filas cambiadas, insertadas o eliminadas mediante la ejecución de la instrucción SQL.Gets the number of rows changed, inserted, or deleted by execution of the SQL statement.

(Heredado de RowUpdatedEventArgs)
Row

Obtiene la clase DataRow que se envió a través de un método Update(DataSet).Gets the DataRow sent through an Update(DataSet).

(Heredado de RowUpdatedEventArgs)
RowCount

Obtiene el número de filas procesadas en un lote de registros actualizados.Gets the number of rows processed in a batch of updated records.

(Heredado de RowUpdatedEventArgs)
StatementType

Obtiene el tipo de instrucción SQL ejecutada.Gets the type of SQL statement executed.

(Heredado de RowUpdatedEventArgs)
Status

Obtiene UpdateStatus de la propiedad Command.Gets the UpdateStatus of the Command property.

(Heredado de RowUpdatedEventArgs)
TableMapping

Obtiene la clase DataTableMapping que se envió a través de un método Update(DataSet).Gets the DataTableMapping sent through an Update(DataSet).

(Heredado de RowUpdatedEventArgs)

Métodos

CopyToRows(DataRow[])

Copia referencias a las filas modificadas en la matriz proporcionada.Copies references to the modified rows into the provided array.

(Heredado de RowUpdatedEventArgs)
CopyToRows(DataRow[], Int32)

Copia referencias a las filas modificadas en la matriz proporcionada.Copies references to the modified rows into the provided array.

(Heredado de RowUpdatedEventArgs)
Equals(Object)

Determina si el objeto especificado es igual al objeto actual.Determines whether the specified object is equal to the current object.

(Heredado de Object)
GetHashCode()

Sirve como función hash predeterminada.Serves as the default hash function.

(Heredado de Object)
GetType()

Obtiene el Type de la instancia actual.Gets the Type of the current instance.

(Heredado de Object)
MemberwiseClone()

Crea una copia superficial del Object actual.Creates a shallow copy of the current Object.

(Heredado de Object)
ToString()

Devuelve un valor de tipo string que representa el objeto actual.Returns a string that represents the current object.

(Heredado de Object)

Se aplica a

Consulte también: