DataAdapter.MissingSchemaAction Propriedade

Definição

Espaço de Nomes:
System.Data.Common
Assemblagem:
System.Data.dll
Assemblagem:
netstandard.dll

Determina a ação a tomar quando o esquema existente DataSet não corresponde aos dados recebidos.

public:
 property System::Data::MissingSchemaAction MissingSchemaAction { System::Data::MissingSchemaAction get(); void set(System::Data::MissingSchemaAction value); };
[System.Data.DataSysDescription("DataAdapter_MissingSchemaAction")]
public System.Data.MissingSchemaAction MissingSchemaAction { get; set; }
public System.Data.MissingSchemaAction MissingSchemaAction { get; set; }
[<System.Data.DataSysDescription("DataAdapter_MissingSchemaAction")>]
member this.MissingSchemaAction : System.Data.MissingSchemaAction with get, set
member this.MissingSchemaAction : System.Data.MissingSchemaAction with get, set
Public Property MissingSchemaAction As MissingSchemaAction

Valor de Propriedade

MissingSchemaAction

Um dos MissingSchemaAction valores. A predefinição é Add.

Implementações

MissingSchemaAction
Atributos
DataSysDescriptionAttribute

Exceções

ArgumentException

O conjunto de valores não é um dos MissingSchemaAction valores.

Exemplos

O exemplo seguinte cria uma classe derivada OleDbDataAdapter e define algumas das suas propriedades.

// Assumes a valid connection string to an Access database.
static void CreateOleDbAdapter(string connectionString)
{
    OleDbDataAdapter adapter = new OleDbDataAdapter();
    adapter.SelectCommand =
        new OleDbCommand("SELECT * FROM Categories ORDER BY CategoryID");
    adapter.SelectCommand.Connection =
        new OleDbConnection(connectionString);
    adapter.MissingMappingAction = MissingMappingAction.Error;
    adapter.MissingSchemaAction = MissingSchemaAction.Error;
}

' Assumes a valid connection string to an Access database.
Private Sub CreateOleDbDataAdapter(ByVal connectionString As String)
    Dim adapter As New OleDbDataAdapter()
    adapter.SelectCommand = _
       New OleDbCommand("SELECT * FROM Categories ORDER BY CategoryID")
    adapter.SelectCommand.Connection = New OleDbConnection _
       (connectionString)
    adapter.MissingMappingAction = MissingMappingAction.Error
    adapter.MissingSchemaAction = MissingSchemaAction.Error
End Sub

Aplica-se a

Ver também