DataAdapter.MissingSchemaAction 屬性

定義

命名空間:

System.Data.Common

組件:

System.Data.Common.dll

來源:

DataAdapter.cs

判斷在現有 DataSet 結構描述 (Schema) 與傳入的資料不相符時要採取的動作。

public:
 property System::Data::MissingSchemaAction MissingSchemaAction { System::Data::MissingSchemaAction get(); void set(System::Data::MissingSchemaAction value); };

public System.Data.MissingSchemaAction MissingSchemaAction { get; set; }

member this.MissingSchemaAction : System.Data.MissingSchemaAction with get, set

Public Property MissingSchemaAction As MissingSchemaAction

屬性值

MissingSchemaAction

其中一個 MissingSchemaAction 值。 預設為 Add。

實作

MissingSchemaAction

例外狀況

ArgumentException

設定的值不是其中一個 MissingSchemaAction 值。

範例

下列範例會建立衍生類別， OleDbDataAdapter 並設定其部分屬性。

// 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

另請參閱

• MissingMappingAction
• ADO.NET 概觀 \(部分機器翻譯\)