Méthode SqlCeResultSet.Update

Envoie les modifications de l'enregistrement actif vers la ligne sous-jacente sur le serveur.

Espace de noms :  System.Data.SqlServerCe
Assembly :  System.Data.SqlServerCe (en System.Data.SqlServerCe.dll)

Syntaxe

'Déclaration
Public Sub Update
'Utilisation
Dim instance As SqlCeResultSet

instance.Update()

public void Update()

public:
void Update()

member Update : unit -> unit 

public function Update()

Notes

Lève une exception InvalidOperation si la fonction est appelée sur un lecteur non modifiable ou si le lecteur n'est pas positionné sur un enregistrement valide.

Exemples

Dim conn As SqlCeConnection = Nothing

Try
    File.Delete("Test.sdf")

    Dim engine As New SqlCeEngine("Data Source = Test.sdf")
    engine.CreateDatabase()

    conn = New SqlCeConnection("Data Source = Test.sdf")
    conn.Open()

    Dim cmd As SqlCeCommand = conn.CreateCommand()
    cmd.CommandText = "CREATE TABLE myTable (col1 INT)"
    cmd.ExecuteNonQuery()

    cmd.CommandText = "SELECT * FROM myTable"

    Dim rs As SqlCeResultSet = cmd.ExecuteResultSet(ResultSetOptions.Updatable Or ResultSetOptions.Scrollable)

    Dim rec As SqlCeUpdatableRecord = rs.CreateRecord()

    ' Insert 10 records
    '
    Dim i As Integer
    For i = 0 To 9
        rec.SetInt32(0, i)
        rs.Insert(rec)
    Next i

    ' Update the 5th record
    '
    If True = rs.ReadAbsolute(5) Then
        rs.SetInt32(0, 55)
        rs.Update()
    End If

    ' Delete the 2nd record
    '
    If True = rs.ReadAbsolute(2) Then
        rs.Delete()
    End If
Catch e As Exception
    MessageBox.Show(e.Message)
Finally
    conn.Close()
End Try

SqlCeConnection conn = null;

try
{
    File.Delete("Test.sdf");

    SqlCeEngine engine = new SqlCeEngine("Data Source = Test.sdf");
    engine.CreateDatabase();

    conn = new SqlCeConnection("Data Source = Test.sdf");
    conn.Open();

    SqlCeCommand cmd = conn.CreateCommand();
    cmd.CommandText = "CREATE TABLE myTable (col1 INT)";
    cmd.ExecuteNonQuery();

    cmd.CommandText = "SELECT * FROM myTable";

    SqlCeResultSet rs = cmd.ExecuteResultSet(ResultSetOptions.Updatable |
        ResultSetOptions.Scrollable);

    SqlCeUpdatableRecord rec = rs.CreateRecord();

    // Insert 10 records
    //
    for (int i = 0; i < 10; i++)
    {
        rec.SetInt32(0, i);
        rs.Insert(rec);
    }

    // Update the 5th record
    //
    if (true == rs.ReadAbsolute(5))
    {
        rs.SetInt32(0, 55);
        rs.Update();
    }

    // Delete the 2nd record
    //
    if (true == rs.ReadAbsolute(2))
    {
        rs.Delete();
    }
}
catch (Exception e)
{
    MessageBox.Show(e.Message);
}
finally
{
    conn.Close();
}

Voir aussi

Référence

SqlCeResultSet Classe

Espace de noms System.Data.SqlServerCe