DataAdapter.MissingMappingAction Property
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Determines the action to take when incoming data does not have a matching table or column.
public:
property System::Data::MissingMappingAction MissingMappingAction { System::Data::MissingMappingAction get(); void set(System::Data::MissingMappingAction value); };
public System.Data.MissingMappingAction MissingMappingAction { get; set; }
[System.Data.DataSysDescription("DataAdapter_MissingMappingAction")]
public System.Data.MissingMappingAction MissingMappingAction { get; set; }
member this.MissingMappingAction : System.Data.MissingMappingAction with get, set
[<System.Data.DataSysDescription("DataAdapter_MissingMappingAction")>]
member this.MissingMappingAction : System.Data.MissingMappingAction with get, set
Public Property MissingMappingAction As MissingMappingAction
Property Value
One of the MissingMappingAction values. The default is Passthrough
.
Implements
- Attributes
Exceptions
The value set is not one of the MissingMappingAction values.
Examples
The following example creates a derived class, OleDbDataAdapter and sets some of its properties.
// 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
Remarks
The TableMappings property provides the primary mapping between the returned records and the DataSet.
Applies to
See also
意見反應
https://aka.ms/ContentUserFeedback。
即將登場:在 2024 年,我們將逐步淘汰 GitHub 問題作為內容的意見反應機制,並將它取代為新的意見反應系統。 如需詳細資訊,請參閱:提交並檢視相關的意見反應