SqlRowUpdatedEventArgs SqlRowUpdatedEventArgs SqlRowUpdatedEventArgs SqlRowUpdatedEventArgs Class

Définition

Fournit des données pour l'événement 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
Héritage

Exemples

L’exemple suivant montre comment utiliser à la fois RowUpdating les RowUpdated événements et.The following example shows how to use both the RowUpdating and RowUpdated events.

L' RowUpdating événement retourne la sortie suivante:The RowUpdating event returns this output:

Arguments d’événement: (commande = System. Data. SqlClient. SqlCommand commandType = 2 Status = 0)Event Arguments: (command=System.Data.SqlClient.SqlCommand commandType=2 status=0)

L' RowUpdated événement retourne la sortie suivante:The RowUpdated event returns this output:

Arguments d’événement: (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 * FROMProducts";

    // 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 * FROMProducts"
        
        ' create DataAdapter
        Dim adapter As New SqlDataAdapter(queryString, connectionString)
        Dim builder As SqlCommandBuilder = 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 

Remarques

L' RowUpdated événement est déclenché quand un Update à une ligne est terminé.The RowUpdated event is raised when an Update to a row is completed.

Lorsque vous Updateutilisez, deux événements se produisent pour chaque ligne de données mise à jour.When using Update, there are two events that occur for each data row updated. L’ordre d’exécution est le suivant:The order of execution is as follows:

  1. Les valeurs dans le DataRow sont déplacées vers les valeurs de paramètre.The values in the DataRow are moved to the parameter values.

  2. L'événement OnRowUpdating est déclenché.The OnRowUpdating event is raised.

  3. La commande s’exécute.The command executes.

  4. Si la commande a la valeur FirstReturnedRecord, et que le premier résultat retourné est placé dans DataRowle.If the command is set to FirstReturnedRecord, and the first returned result is placed in the DataRow.

  5. S’il existe des paramètres de sortie, ceux-ci DataRowsont placés dans le.If there are output parameters, they are placed in the DataRow.

  6. L'événement OnRowUpdated est déclenché.The OnRowUpdated event is raised.

  7. AcceptChanges est appelé.AcceptChanges is called.

Constructeurs

SqlRowUpdatedEventArgs(DataRow, IDbCommand, StatementType, DataTableMapping) SqlRowUpdatedEventArgs(DataRow, IDbCommand, StatementType, DataTableMapping) SqlRowUpdatedEventArgs(DataRow, IDbCommand, StatementType, DataTableMapping) SqlRowUpdatedEventArgs(DataRow, IDbCommand, StatementType, DataTableMapping)

Initialise une nouvelle instance de la classe SqlRowUpdatedEventArgs.Initializes a new instance of the SqlRowUpdatedEventArgs class.

Propriétés

Command Command Command Command

Obtient ou définit SqlCommand qui est exécuté lorsque Update(DataSet) est appelé.Gets or sets the SqlCommand executed when Update(DataSet) is called.

Errors Errors Errors Errors

Obtient les erreurs générées par le fournisseur de données .NET Framework lors de l'exécution de Command.Gets any errors generated by the .NET Framework data provider when the Command was executed.

(Inherited from RowUpdatedEventArgs)
RecordsAffected RecordsAffected RecordsAffected RecordsAffected

Obtient le nombre de lignes modifiées, insérées ou supprimées par l'exécution de l'instruction SQL.Gets the number of rows changed, inserted, or deleted by execution of the SQL statement.

(Inherited from RowUpdatedEventArgs)
Row Row Row Row

Obtient le DataRow envoyé par le biais de Update(DataSet).Gets the DataRow sent through an Update(DataSet).

(Inherited from RowUpdatedEventArgs)
RowCount RowCount RowCount RowCount

Obtient le nombre de lignes traitées dans un lot d'enregistrements mis à jour.Gets the number of rows processed in a batch of updated records.

(Inherited from RowUpdatedEventArgs)
StatementType StatementType StatementType StatementType

Obtient le type de l'instruction SQL exécutée.Gets the type of SQL statement executed.

(Inherited from RowUpdatedEventArgs)
Status Status Status Status

Obtient UpdateStatus de la propriété Command.Gets the UpdateStatus of the Command property.

(Inherited from RowUpdatedEventArgs)
TableMapping TableMapping TableMapping TableMapping

Obtient le DataTableMapping envoyé par le biais de Update(DataSet).Gets the DataTableMapping sent through an Update(DataSet).

(Inherited from RowUpdatedEventArgs)

Méthodes

CopyToRows(DataRow[]) CopyToRows(DataRow[]) CopyToRows(DataRow[]) CopyToRows(DataRow[])

Copie les références vers les lignes modifiées dans le tableau fourni.Copies references to the modified rows into the provided array.

(Inherited from RowUpdatedEventArgs)
CopyToRows(DataRow[], Int32) CopyToRows(DataRow[], Int32) CopyToRows(DataRow[], Int32) CopyToRows(DataRow[], Int32)

Copie les références vers les lignes modifiées dans le tableau fourni.Copies references to the modified rows into the provided array.

(Inherited from RowUpdatedEventArgs)
Equals(Object) Equals(Object) Equals(Object) Equals(Object)

Détermine si l'objet spécifié est identique à l'objet actuel.Determines whether the specified object is equal to the current object.

(Inherited from Object)
GetHashCode() GetHashCode() GetHashCode() GetHashCode()

Fait office de fonction de hachage par défaut.Serves as the default hash function.

(Inherited from Object)
GetType() GetType() GetType() GetType()

Obtient le Type de l'instance actuelle.Gets the Type of the current instance.

(Inherited from Object)
MemberwiseClone() MemberwiseClone() MemberwiseClone() MemberwiseClone()

Crée une copie superficielle de l'objet Object actuel.Creates a shallow copy of the current Object.

(Inherited from Object)
ToString() ToString() ToString() ToString()

Retourne une chaîne qui représente l'objet actuel.Returns a string that represents the current object.

(Inherited from Object)

S’applique à

Voir aussi