OleDbDataAdapter 建構函式
定義
重要
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初始化 OleDbDataAdapter 類別的新執行個體。
多載
OleDbDataAdapter() |
初始化 OleDbDataAdapter 類別的新執行個體。 |
OleDbDataAdapter(OleDbCommand) |
使用指定 OleDbDataAdapter 做為 OleDbCommand 屬性,初始化 SelectCommand 類別的新執行個體。 |
OleDbDataAdapter(String, OleDbConnection) |
使用 OleDbDataAdapter,初始化 SelectCommand 類別的新執行個體。 |
OleDbDataAdapter(String, String) |
使用 OleDbDataAdapter,初始化 SelectCommand 類別的新執行個體。 |
OleDbDataAdapter()
初始化 OleDbDataAdapter 類別的新執行個體。
public:
OleDbDataAdapter();
public OleDbDataAdapter ();
Public Sub New ()
範例
下列範例會建立 並 OleDbDataAdapter 設定其部分屬性。
public static OleDbDataAdapter CreateDataAdapter(
OleDbConnection connection)
{
string selectCommand =
"SELECT CustomerID, CompanyName FROM Customers";
OleDbDataAdapter adapter =
new OleDbDataAdapter(selectCommand, connection);
adapter.MissingSchemaAction = MissingSchemaAction.AddWithKey;
// Create the Insert, Update and Delete commands.
adapter.InsertCommand = new OleDbCommand(
"INSERT INTO Customers (CustomerID, CompanyName) " +
"VALUES (?, ?)");
adapter.UpdateCommand = new OleDbCommand(
"UPDATE Customers SET CustomerID = ?, CompanyName = ? " +
"WHERE CustomerID = ?");
adapter.DeleteCommand = new OleDbCommand(
"DELETE FROM Customers WHERE CustomerID = ?");
// Create the parameters.
adapter.InsertCommand.Parameters.Add("@CustomerID",
OleDbType.Char, 5, "CustomerID");
adapter.InsertCommand.Parameters.Add("@CompanyName",
OleDbType.VarChar, 40, "CompanyName");
adapter.UpdateCommand.Parameters.Add("@CustomerID",
OleDbType.Char, 5, "CustomerID");
adapter.UpdateCommand.Parameters.Add("@CompanyName",
OleDbType.VarChar, 40, "CompanyName");
adapter.UpdateCommand.Parameters.Add("@oldCustomerID",
OleDbType.Char, 5, "CustomerID").SourceVersion =
DataRowVersion.Original;
adapter.DeleteCommand.Parameters.Add("@CustomerID",
OleDbType.Char, 5, "CustomerID").SourceVersion =
DataRowVersion.Original;
return adapter;
}
Public Function CreateDataAdapter( _
ByVal connection As OleDbConnection) As OleDbDataAdapter
Dim selectCommand As String = _
"SELECT CustomerID, CompanyName FROM Customers"
Dim adapter As OleDbDataAdapter = _
New OleDbDataAdapter(selectCommand, connection)
adapter.MissingSchemaAction = MissingSchemaAction.AddWithKey
' Create the commands.
adapter.InsertCommand = New OleDbCommand( _
"INSERT INTO Customers (CustomerID, CompanyName) " & _
"VALUES (?, ?)")
adapter.UpdateCommand = New OleDbCommand( _
"UPDATE Customers SET CustomerID = ?, CompanyName = ? " & _
"WHERE CustomerID = ?")
adapter.DeleteCommand = New OleDbCommand( _
"DELETE FROM Customers WHERE CustomerID = ?")
' Create the parameters.
adapter.InsertCommand.Parameters.Add( _
"@CustomerID", OleDbType.Char, 5, "CustomerID")
adapter.InsertCommand.Parameters.Add( _
"@CompanyName", OleDbType.VarChar, 40, "CompanyName")
adapter.UpdateCommand.Parameters.Add( _
"@CustomerID", OleDbType.Char, 5, "CustomerID")
adapter.UpdateCommand.Parameters.Add( _
"@CompanyName", OleDbType.VarChar, 40, "CompanyName")
adapter.UpdateCommand.Parameters.Add( _
"@oldCustomerID", OleDbType.Char, 5, "CustomerID").SourceVersion = _
DataRowVersion.Original
adapter.DeleteCommand.Parameters.Add( _
"@CustomerID", OleDbType.Char, 5, "CustomerID").SourceVersion = _
DataRowVersion.Original
Return adapter
End Function
備註
當您建立 的 OleDbDataAdapter實例時,下列讀取/寫入屬性會設定為下列初始值。
屬性 | 初始值 |
---|---|
MissingMappingAction | MissingMappingAction.Passthrough |
MissingSchemaAction | MissingSchemaAction.Add |
您可以透過對 屬性的個別呼叫來變更這些屬性的值。
另請參閱
適用於
OleDbDataAdapter(OleDbCommand)
使用指定 OleDbDataAdapter 做為 OleDbCommand 屬性,初始化 SelectCommand 類別的新執行個體。
public:
OleDbDataAdapter(System::Data::OleDb::OleDbCommand ^ selectCommand);
public OleDbDataAdapter (System.Data.OleDb.OleDbCommand? selectCommand);
public OleDbDataAdapter (System.Data.OleDb.OleDbCommand selectCommand);
new System.Data.OleDb.OleDbDataAdapter : System.Data.OleDb.OleDbCommand -> System.Data.OleDb.OleDbDataAdapter
Public Sub New (selectCommand As OleDbCommand)
參數
- selectCommand
- OleDbCommand
OleDbCommand,為 SELECT 陳述式或預存程序,且設定成 SelectCommand 的 OleDbDataAdapter 屬性。
範例
下列範例會建立 並 OleDbDataAdapter 設定其部分屬性。
public static OleDbDataAdapter CreateDataAdapter(string selectCommand,
OleDbConnection connection)
{
OleDbDataAdapter adapter = new OleDbDataAdapter(selectCommand, connection);
adapter.MissingSchemaAction = MissingSchemaAction.AddWithKey;
// Create the Insert, Update and Delete commands.
adapter.InsertCommand = new OleDbCommand(
"INSERT INTO Customers (CustomerID, CompanyName) " +
"VALUES (?, ?)");
adapter.UpdateCommand = new OleDbCommand(
"UPDATE Customers SET CustomerID = ?, CompanyName = ? " +
"WHERE CustomerID = ?");
adapter.DeleteCommand = new OleDbCommand(
"DELETE FROM Customers WHERE CustomerID = ?");
// Create the parameters.
adapter.InsertCommand.Parameters.Add("@CustomerID",
OleDbType.Char, 5, "CustomerID");
adapter.InsertCommand.Parameters.Add("@CompanyName",
OleDbType.VarChar, 40, "CompanyName");
adapter.UpdateCommand.Parameters.Add("@CustomerID",
OleDbType.Char, 5, "CustomerID");
adapter.UpdateCommand.Parameters.Add("@CompanyName",
OleDbType.VarChar, 40, "CompanyName");
adapter.UpdateCommand.Parameters.Add("@oldCustomerID",
OleDbType.Char, 5, "CustomerID").SourceVersion =
DataRowVersion.Original;
adapter.DeleteCommand.Parameters.Add("@CustomerID",
OleDbType.Char, 5, "CustomerID").SourceVersion =
DataRowVersion.Original;
return adapter;
}
Public Function CreateDataAdapter(ByVal selectCommand As String, _
ByVal connection As OleDbConnection) As OleDbDataAdapter
Dim adapter As OleDbDataAdapter = _
New OleDbDataAdapter(selectCommand, connection)
adapter.MissingSchemaAction = MissingSchemaAction.AddWithKey
' Create the commands.
adapter.InsertCommand = New OleDbCommand( _
"INSERT INTO Customers (CustomerID, CompanyName) " & _
"VALUES (?, ?)")
adapter.UpdateCommand = New OleDbCommand( _
"UPDATE Customers SET CustomerID = ?, CompanyName = ? " & _
"WHERE CustomerID = ?")
adapter.DeleteCommand = New OleDbCommand( _
"DELETE FROM Customers WHERE CustomerID = ?")
' Create the parameters.
adapter.InsertCommand.Parameters.Add( _
"@CustomerID", OleDbType.Char, 5, "CustomerID")
adapter.InsertCommand.Parameters.Add( _
"@CompanyName", OleDbType.VarChar, 40, "CompanyName")
adapter.UpdateCommand.Parameters.Add( _
"@CustomerID", OleDbType.Char, 5, "CustomerID")
adapter.UpdateCommand.Parameters.Add( _
"@CompanyName", OleDbType.VarChar, 40, "CompanyName")
adapter.UpdateCommand.Parameters.Add( _
"@oldCustomerID", OleDbType.Char, 5, "CustomerID").SourceVersion = _
DataRowVersion.Original
adapter.DeleteCommand.Parameters.Add( _
"@CustomerID", OleDbType.Char, 5, "CustomerID").SourceVersion = _
DataRowVersion.Original
Return adapter
End Function
備註
這個建構函式的實作會將 OleDbDataAdapterSelectCommand 屬性設定為 參數中指定的 selectCommand
值。
當您建立 的 OleDbDataAdapter實例時,下列讀取/寫入屬性會設定為下列初始值。
屬性 | 初始值 |
---|---|
MissingMappingAction | MissingMappingAction.Passthrough |
MissingSchemaAction | MissingSchemaAction.Add |
您可以透過對 屬性的個別呼叫來變更這些屬性的值。
另請參閱
適用於
OleDbDataAdapter(String, OleDbConnection)
使用 OleDbDataAdapter,初始化 SelectCommand 類別的新執行個體。
public:
OleDbDataAdapter(System::String ^ selectCommandText, System::Data::OleDb::OleDbConnection ^ selectConnection);
public OleDbDataAdapter (string? selectCommandText, System.Data.OleDb.OleDbConnection? selectConnection);
public OleDbDataAdapter (string selectCommandText, System.Data.OleDb.OleDbConnection selectConnection);
new System.Data.OleDb.OleDbDataAdapter : string * System.Data.OleDb.OleDbConnection -> System.Data.OleDb.OleDbDataAdapter
Public Sub New (selectCommandText As String, selectConnection As OleDbConnection)
參數
- selectCommandText
- String
字串,要由 SelectCommand 的 OleDbDataAdapter 屬性使用之 SQL SELECT 陳述式或預存程序。
- selectConnection
- OleDbConnection
表示連接的 OleDbConnection。
範例
下列範例會建立 並 OleDbDataAdapter 設定其部分屬性。
public static OleDbDataAdapter CreateDataAdapter(
OleDbConnection connection)
{
string selectCommand =
"SELECT CustomerID, CompanyName FROM Customers";
OleDbDataAdapter adapter =
new OleDbDataAdapter(selectCommand, connection);
adapter.MissingSchemaAction = MissingSchemaAction.AddWithKey;
// Create the Insert, Update and Delete commands.
adapter.InsertCommand = new OleDbCommand(
"INSERT INTO Customers (CustomerID, CompanyName) " +
"VALUES (?, ?)");
adapter.UpdateCommand = new OleDbCommand(
"UPDATE Customers SET CustomerID = ?, CompanyName = ? " +
"WHERE CustomerID = ?");
adapter.DeleteCommand = new OleDbCommand(
"DELETE FROM Customers WHERE CustomerID = ?");
// Create the parameters.
adapter.InsertCommand.Parameters.Add("@CustomerID",
OleDbType.Char, 5, "CustomerID");
adapter.InsertCommand.Parameters.Add("@CompanyName",
OleDbType.VarChar, 40, "CompanyName");
adapter.UpdateCommand.Parameters.Add("@CustomerID",
OleDbType.Char, 5, "CustomerID");
adapter.UpdateCommand.Parameters.Add("@CompanyName",
OleDbType.VarChar, 40, "CompanyName");
adapter.UpdateCommand.Parameters.Add("@oldCustomerID",
OleDbType.Char, 5, "CustomerID").SourceVersion =
DataRowVersion.Original;
adapter.DeleteCommand.Parameters.Add("@CustomerID",
OleDbType.Char, 5, "CustomerID").SourceVersion =
DataRowVersion.Original;
return adapter;
}
Public Function CreateDataAdapter( _
ByVal connection As OleDbConnection) As OleDbDataAdapter
Dim selectCommand As String = _
"SELECT CustomerID, CompanyName FROM Customers"
Dim adapter As OleDbDataAdapter = _
New OleDbDataAdapter(selectCommand, connection)
adapter.MissingSchemaAction = MissingSchemaAction.AddWithKey
' Create the commands.
adapter.InsertCommand = New OleDbCommand( _
"INSERT INTO Customers (CustomerID, CompanyName) " & _
"VALUES (?, ?)")
adapter.UpdateCommand = New OleDbCommand( _
"UPDATE Customers SET CustomerID = ?, CompanyName = ? " & _
"WHERE CustomerID = ?")
adapter.DeleteCommand = New OleDbCommand( _
"DELETE FROM Customers WHERE CustomerID = ?")
' Create the parameters.
adapter.InsertCommand.Parameters.Add( _
"@CustomerID", OleDbType.Char, 5, "CustomerID")
adapter.InsertCommand.Parameters.Add( _
"@CompanyName", OleDbType.VarChar, 40, "CompanyName")
adapter.UpdateCommand.Parameters.Add( _
"@CustomerID", OleDbType.Char, 5, "CustomerID")
adapter.UpdateCommand.Parameters.Add( _
"@CompanyName", OleDbType.VarChar, 40, "CompanyName")
adapter.UpdateCommand.Parameters.Add( _
"@oldCustomerID", OleDbType.Char, 5, "CustomerID").SourceVersion = _
DataRowVersion.Original
adapter.DeleteCommand.Parameters.Add( _
"@CustomerID", OleDbType.Char, 5, "CustomerID").SourceVersion = _
DataRowVersion.Original
Return adapter
End Function
備註
這個 實作會 OleDbDataAdapter 開啟,如果尚未開啟,則會關閉 OleDbConnection 。 這在必須針對兩個或多個OleDbDataAdapter物件呼叫 Fill 方法的應用程式中很有用。 OleDbConnection如果 已經開啟,您必須明確呼叫 Close 或 Dispose 以關閉它。
當您建立 的 OleDbDataAdapter實例時,下列讀取/寫入屬性會設定為下列初始值。
屬性 | 初始值 |
---|---|
MissingMappingAction | MissingMappingAction.Passthrough |
MissingSchemaAction | MissingSchemaAction.Add |
您可以透過對 屬性的個別呼叫來變更其中一個屬性的值。
另請參閱
適用於
OleDbDataAdapter(String, String)
使用 OleDbDataAdapter,初始化 SelectCommand 類別的新執行個體。
public:
OleDbDataAdapter(System::String ^ selectCommandText, System::String ^ selectConnectionString);
public OleDbDataAdapter (string? selectCommandText, string? selectConnectionString);
public OleDbDataAdapter (string selectCommandText, string selectConnectionString);
new System.Data.OleDb.OleDbDataAdapter : string * string -> System.Data.OleDb.OleDbDataAdapter
Public Sub New (selectCommandText As String, selectConnectionString As String)
參數
- selectCommandText
- String
字串,要由 SelectCommand 的 OleDbDataAdapter 屬性使用之 SQL SELECT 陳述式或預存程序。
- selectConnectionString
- String
連接字串。
範例
下列範例會建立 並 OleDbDataAdapter 設定其部分屬性。
public static OleDbDataAdapter CreateDataAdapter(
OleDbConnection connection)
{
string selectCommand =
"SELECT CustomerID, CompanyName FROM Customers";
OleDbDataAdapter adapter =
new OleDbDataAdapter(selectCommand, connection);
adapter.MissingSchemaAction = MissingSchemaAction.AddWithKey;
// Create the Insert, Update and Delete commands.
adapter.InsertCommand = new OleDbCommand(
"INSERT INTO Customers (CustomerID, CompanyName) " +
"VALUES (?, ?)");
adapter.UpdateCommand = new OleDbCommand(
"UPDATE Customers SET CustomerID = ?, CompanyName = ? " +
"WHERE CustomerID = ?");
adapter.DeleteCommand = new OleDbCommand(
"DELETE FROM Customers WHERE CustomerID = ?");
// Create the parameters.
adapter.InsertCommand.Parameters.Add("@CustomerID",
OleDbType.Char, 5, "CustomerID");
adapter.InsertCommand.Parameters.Add("@CompanyName",
OleDbType.VarChar, 40, "CompanyName");
adapter.UpdateCommand.Parameters.Add("@CustomerID",
OleDbType.Char, 5, "CustomerID");
adapter.UpdateCommand.Parameters.Add("@CompanyName",
OleDbType.VarChar, 40, "CompanyName");
adapter.UpdateCommand.Parameters.Add("@oldCustomerID",
OleDbType.Char, 5, "CustomerID").SourceVersion =
DataRowVersion.Original;
adapter.DeleteCommand.Parameters.Add("@CustomerID",
OleDbType.Char, 5, "CustomerID").SourceVersion =
DataRowVersion.Original;
return adapter;
}
Public Function CreateDataAdapter( _
ByVal connection As OleDbConnection) As OleDbDataAdapter
Dim selectCommand As String = _
"SELECT CustomerID, CompanyName FROM Customers"
Dim adapter As OleDbDataAdapter = _
New OleDbDataAdapter(selectCommand, connection)
adapter.MissingSchemaAction = MissingSchemaAction.AddWithKey
' Create the commands.
adapter.InsertCommand = New OleDbCommand( _
"INSERT INTO Customers (CustomerID, CompanyName) " & _
"VALUES (?, ?)")
adapter.UpdateCommand = New OleDbCommand( _
"UPDATE Customers SET CustomerID = ?, CompanyName = ? " & _
"WHERE CustomerID = ?")
adapter.DeleteCommand = New OleDbCommand( _
"DELETE FROM Customers WHERE CustomerID = ?")
' Create the parameters.
adapter.InsertCommand.Parameters.Add( _
"@CustomerID", OleDbType.Char, 5, "CustomerID")
adapter.InsertCommand.Parameters.Add( _
"@CompanyName", OleDbType.VarChar, 40, "CompanyName")
adapter.UpdateCommand.Parameters.Add( _
"@CustomerID", OleDbType.Char, 5, "CustomerID")
adapter.UpdateCommand.Parameters.Add( _
"@CompanyName", OleDbType.VarChar, 40, "CompanyName")
adapter.UpdateCommand.Parameters.Add( _
"@oldCustomerID", OleDbType.Char, 5, "CustomerID").SourceVersion = _
DataRowVersion.Original
adapter.DeleteCommand.Parameters.Add( _
"@CustomerID", OleDbType.Char, 5, "CustomerID").SourceVersion = _
DataRowVersion.Original
Return adapter
End Function
備註
建構函式的 OleDbDataAdapter 這個多載會 selectConnectionString
使用 參數來設定 SelectCommand 屬性。 不過,它不會開啟連線。 您仍然必須明確開啟連線。
當您建立 的 OleDbDataAdapter實例時,下列讀取/寫入屬性會設定為下列初始值。
屬性 | 初始值 |
---|---|
MissingMappingAction | MissingMappingAction.Passthrough |
MissingSchemaAction | MissingSchemaAction.Add |
您可以透過對 屬性的個別呼叫來變更這些屬性的值。