SqlCeDataAdapter Constructor (String, String)

Artigo
01/14/2011

Inicializa uma nova instância da classe SqlCeDataAdapter com um SelectCommand e uma cadeia de caracteres e conexão.

Namespace: System.Data.SqlServerCe
Assembly: System.Data.SqlServerCe (em system.data.sqlserverce.dll)

Sintaxe

'Declaração
Public Sub New ( _
    selectCommandText As String, _
    selectConnectionString As String _
)

public SqlCeDataAdapter (
    string selectCommandText,
    string selectConnectionString
)

public:
SqlCeDataAdapter (
    String^ selectCommandText, 
    String^ selectConnectionString
)

public SqlCeDataAdapter (
    String selectCommandText, 
    String selectConnectionString
)

public function SqlCeDataAdapter (
    selectCommandText : String, 
    selectConnectionString : String
)

Parâmetros

selectCommandText
Uma String que é uma instrução SQL SELECT a ser usada como CommandText da propriedade SelectCommand do SqlCeDataAdapter.

selectConnectionString
A cadeia de caracteres de conexão.

Comentários

Ao criar uma instância do SqlCeDataAdapter, as seguintes propriedades de leitura/gravação são definidas com os seguintes valores iniciais.

Propriedades	Valor inicial
MissingMappingAction	MissingMappingAction.Passthrough
MissingSchemaAction	MissingSchemaAction.Add

Você pode alterar o valor de todas essas propriedades fazendo uma chamada separada dessa propriedade.

Exemplo

O exemplo a seguir cria um SqlCeDataAdapter passando a cadeia de caracteres da conexão e do texto do comando.

Public Sub Snippet5()
    ' Create DataAdapter
    '
    Dim adp As New SqlCeDataAdapter("SELECT * FROM products", "Data Source = MyDatabase.sdf")

    Dim cb As New SqlCeCommandBuilder(adp)

    ' Create and fill the dataset (select only first 5 rows)
    '
    Dim ds As New DataSet()
    adp.Fill(ds, 0, 5, "Table")

    ' Modify dataSet
    '
    Dim table As DataTable = ds.Tables("Table")
    table.Rows(1)("Product Name") = "Asian Chai"

    ' Add handlers
    '
    AddHandler adp.RowUpdating, AddressOf OnRowUpdating
    AddHandler adp.RowUpdated, AddressOf OnRowUpdated

    ' Update, this operation fires two events (RowUpdating/RowUpdated)  
    '
    adp.Update(ds, "Table")

    ' Remove handlers
    '
    RemoveHandler adp.RowUpdating, AddressOf OnRowUpdating
    RemoveHandler adp.RowUpdated, AddressOf OnRowUpdated

End Sub 'Snippet5


Private Shared Sub OnRowUpdating(ByVal sender As Object, ByVal e As SqlCeRowUpdatingEventArgs)
    Console.WriteLine("OnRowUpdating")
    Console.WriteLine(e.Command.CommandText)
    Console.WriteLine(e.StatementType)
    Console.WriteLine(e.Status)

End Sub 'OnRowUpdating


Private Shared Sub OnRowUpdated(ByVal sender As Object, ByVal e As SqlCeRowUpdatedEventArgs)
    Console.WriteLine("OnRowUpdated")
    Console.WriteLine(e.Command.CommandText)
    Console.WriteLine(e.StatementType)
    Console.WriteLine(e.Status)

End Sub 'OnRowUpdated

public void Snippet5()
{
    // Create DataAdapter
    //
    SqlCeDataAdapter adp = new SqlCeDataAdapter(
        "SELECT * FROM products",
        "Data Source = MyDatabase.sdf");

    SqlCeCommandBuilder cb = new SqlCeCommandBuilder(adp);

    // Create and fill the dataset (select only first 5 rows)
    //
    DataSet ds = new DataSet();
    adp.Fill(ds, 0, 5, "Table");

    // Modify dataSet
    //
    DataTable table = ds.Tables["Table"];
    table.Rows[1]["Product Name"] = "Asian Chai";

    // Add handlers
    //
    adp.RowUpdating += new SqlCeRowUpdatingEventHandler(OnRowUpdating);
    adp.RowUpdated += new SqlCeRowUpdatedEventHandler(OnRowUpdated);

    // Update, this operation fires two events (RowUpdating/RowUpdated)  
    //
    adp.Update(ds, "Table");

    // Remove handlers
    //
    adp.RowUpdating -= new SqlCeRowUpdatingEventHandler(OnRowUpdating);
    adp.RowUpdated -= new SqlCeRowUpdatedEventHandler(OnRowUpdated);
}

private static void OnRowUpdating(object sender, SqlCeRowUpdatingEventArgs e)
{
    Console.WriteLine("OnRowUpdating");
    Console.WriteLine(e.Command.CommandText);
    Console.WriteLine(e.StatementType);
    Console.WriteLine(e.Status);
}

private static void OnRowUpdated(object sender, SqlCeRowUpdatedEventArgs e)
{
    Console.WriteLine("OnRowUpdated");
    Console.WriteLine(e.Command.CommandText);
    Console.WriteLine(e.StatementType);
    Console.WriteLine(e.Status);
}

Plataformas

Plataformas de desenvolvimento

Windows Vista, Windows Mobile 5.0, Windows XP Professional with Service Pack 2 (SP2), Windows Server 2003, Windows Mobile 2003 for Pocket PC, Windows CE 5.0
Informações de versão
.NET Framework e NET Compact Framework
Com suporte no 3.5
.NET Framework
Com suporte no 3.0
.NET Compact Framework e .Net Framework
Com suporte no 2.0

Consulte também

Referência

SqlCeDataAdapter Class
SqlCeDataAdapter Members
System.Data.SqlServerCe Namespace
MissingMappingAction
MissingSchemaAction

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