SqlDataAdapter 建構函式
定義
重要
部分資訊涉及發行前產品,在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊,不做任何明確或隱含的瑕疵擔保。
初始化 SqlDataAdapter 類別的新執行個體。
多載
SqlDataAdapter() |
初始化 SqlDataAdapter 類別的新執行個體。 |
SqlDataAdapter(SqlCommand) |
使用指定 SqlDataAdapter 做為 SqlCommand 屬性,初始化 SelectCommand 類別的新執行個體。 |
SqlDataAdapter(String, SqlConnection) |
使用 SqlDataAdapter 和 SelectCommand 物件,初始化 SqlConnection 類別的新執行個體。 |
SqlDataAdapter(String, String) |
使用 SqlDataAdapter 和連接字串,初始化 SelectCommand 類別的新執行個體。 |
SqlDataAdapter()
初始化 SqlDataAdapter 類別的新執行個體。
public:
SqlDataAdapter();
public SqlDataAdapter ();
Public Sub New ()
範例
下列範例會建立 並 SqlDataAdapter 設定其部分屬性。
public static SqlDataAdapter CreateSqlDataAdapter(SqlConnection connection)
{
SqlDataAdapter adapter = new SqlDataAdapter();
adapter.MissingSchemaAction = MissingSchemaAction.AddWithKey;
// Create the commands.
adapter.SelectCommand = new SqlCommand(
"SELECT CustomerID, CompanyName FROM CUSTOMERS", connection);
adapter.InsertCommand = new SqlCommand(
"INSERT INTO Customers (CustomerID, CompanyName) " +
"VALUES (@CustomerID, @CompanyName)", connection);
adapter.UpdateCommand = new SqlCommand(
"UPDATE Customers SET CustomerID = @CustomerID, CompanyName = @CompanyName " +
"WHERE CustomerID = @oldCustomerID", connection);
adapter.DeleteCommand = new SqlCommand(
"DELETE FROM Customers WHERE CustomerID = @CustomerID", connection);
// Create the parameters.
adapter.InsertCommand.Parameters.Add("@CustomerID",
SqlDbType.Char, 5, "CustomerID");
adapter.InsertCommand.Parameters.Add("@CompanyName",
SqlDbType.VarChar, 40, "CompanyName");
adapter.UpdateCommand.Parameters.Add("@CustomerID",
SqlDbType.Char, 5, "CustomerID");
adapter.UpdateCommand.Parameters.Add("@CompanyName",
SqlDbType.VarChar, 40, "CompanyName");
adapter.UpdateCommand.Parameters.Add("@oldCustomerID",
SqlDbType.Char, 5, "CustomerID").SourceVersion =
DataRowVersion.Original;
adapter.DeleteCommand.Parameters.Add("@CustomerID",
SqlDbType.Char, 5, "CustomerID").SourceVersion =
DataRowVersion.Original;
return adapter;
}
Public Function CreateSqlDataAdapter( _
ByVal connection As SqlConnection) As SqlDataAdapter
Dim adapter As New SqlDataAdapter()
adapter.MissingSchemaAction = MissingSchemaAction.AddWithKey
' Create the commands.
adapter.SelectCommand = New SqlCommand( _
"SELECT CustomerID, CompanyName FROM CUSTOMERS", connection)
adapter.InsertCommand = New SqlCommand( _
"INSERT INTO Customers (CustomerID, CompanyName) " & _
"VALUES (@CustomerID, @CompanyName)", connection)
adapter.UpdateCommand = New SqlCommand( _
"UPDATE Customers SET CustomerID = @CustomerID, CompanyName = " & _
"@CompanyName WHERE CustomerID = @oldCustomerID", connection)
adapter.DeleteCommand = New SqlCommand( _
"DELETE FROM Customers WHERE CustomerID = @CustomerID", connection)
' Create the parameters.
adapter.InsertCommand.Parameters.Add("@CustomerID", _
SqlDbType.Char, 5, "CustomerID")
adapter.InsertCommand.Parameters.Add("@CompanyName", _
SqlDbType.VarChar, 40, "CompanyName")
adapter.UpdateCommand.Parameters.Add("@CustomerID", _
SqlDbType.Char, 5, "CustomerID")
adapter.UpdateCommand.Parameters.Add("@CompanyName", _
SqlDbType.VarChar, 40, "CompanyName")
adapter.UpdateCommand.Parameters.Add("@oldCustomerID", _
SqlDbType.Char, 5, "CustomerID").SourceVersion = _
DataRowVersion.Original
adapter.DeleteCommand.Parameters.Add("@CustomerID", _
SqlDbType.Char, 5, "CustomerID").SourceVersion = _
DataRowVersion.Original
Return adapter
End Function
備註
建立 的 SqlDataAdapter 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
SqlDataAdapter(SqlCommand)
使用指定 SqlDataAdapter 做為 SqlCommand 屬性,初始化 SelectCommand 類別的新執行個體。
public:
SqlDataAdapter(System::Data::SqlClient::SqlCommand ^ selectCommand);
public SqlDataAdapter (System.Data.SqlClient.SqlCommand selectCommand);
new System.Data.SqlClient.SqlDataAdapter : System.Data.SqlClient.SqlCommand -> System.Data.SqlClient.SqlDataAdapter
Public Sub New (selectCommand As SqlCommand)
參數
- selectCommand
- SqlCommand
SqlCommand,為 Transact-SQL SELECT 陳述式或預存程序 (Stored Procedure),且設定成 SelectCommand 的 SqlDataAdapter 屬性。
範例
下列範例會建立 並 SqlDataAdapter 設定其部分屬性。
public static SqlDataAdapter CreateSqlDataAdapter(SqlCommand selectCommand,
SqlConnection connection)
{
SqlDataAdapter adapter = new SqlDataAdapter(selectCommand);
adapter.MissingSchemaAction = MissingSchemaAction.AddWithKey;
// Create the other commands.
adapter.InsertCommand = new SqlCommand(
"INSERT INTO Customers (CustomerID, CompanyName) " +
"VALUES (@CustomerID, @CompanyName)", connection);
adapter.UpdateCommand = new SqlCommand(
"UPDATE Customers SET CustomerID = @CustomerID, CompanyName = @CompanyName " +
"WHERE CustomerID = @oldCustomerID", connection);
adapter.DeleteCommand = new SqlCommand(
"DELETE FROM Customers WHERE CustomerID = @CustomerID", connection);
// Create the parameters.
adapter.InsertCommand.Parameters.Add("@CustomerID",
SqlDbType.Char, 5, "CustomerID");
adapter.InsertCommand.Parameters.Add("@CompanyName",
SqlDbType.VarChar, 40, "CompanyName");
adapter.UpdateCommand.Parameters.Add("@CustomerID",
SqlDbType.Char, 5, "CustomerID");
adapter.UpdateCommand.Parameters.Add("@CompanyName",
SqlDbType.VarChar, 40, "CompanyName");
adapter.UpdateCommand.Parameters.Add("@oldCustomerID",
SqlDbType.Char, 5, "CustomerID").SourceVersion = DataRowVersion.Original;
adapter.DeleteCommand.Parameters.Add("@CustomerID",
SqlDbType.Char, 5, "CustomerID").SourceVersion = DataRowVersion.Original;
return adapter;
}
Public Function CreateSqlDataAdapter(ByVal selectCommand As SqlCommand, _
ByVal connection As SqlConnection) As SqlDataAdapter
Dim adapter As New SqlDataAdapter(selectCommand)
adapter.MissingSchemaAction = MissingSchemaAction.AddWithKey
' Create the commands.
adapter.InsertCommand = New SqlCommand( _
"INSERT INTO Customers (CustomerID, CompanyName) " & _
"VALUES (@CustomerID, @CompanyName)", connection)
adapter.UpdateCommand = New SqlCommand( _
"UPDATE Customers SET CustomerID = @CustomerID, CompanyName = @CompanyName " & _
"WHERE CustomerID = @oldCustomerID", connection)
adapter.DeleteCommand = New SqlCommand( _
"DELETE FROM Customers WHERE CustomerID = @CustomerID", connection)
' Create the parameters.
adapter.InsertCommand.Parameters.Add("@CustomerID", _
SqlDbType.Char, 5, "CustomerID")
adapter.InsertCommand.Parameters.Add("@CompanyName", _
SqlDbType.VarChar, 40, "CompanyName")
adapter.UpdateCommand.Parameters.Add("@CustomerID", _
SqlDbType.Char, 5, "CustomerID")
adapter.UpdateCommand.Parameters.Add("@CompanyName", _
SqlDbType.VarChar, 40, "CompanyName")
adapter.UpdateCommand.Parameters.Add("@oldCustomerID", _
SqlDbType.Char, 5, "CustomerID").SourceVersion = DataRowVersion.Original
adapter.DeleteCommand.Parameters.Add("@CustomerID", _
SqlDbType.Char, 5, "CustomerID").SourceVersion = DataRowVersion.Original
Return adapter
End Function
備註
這個建構函式的實作會將 SqlDataAdapterSelectCommand 屬性設定為 參數中指定的 selectCommand
值。
建立 的 SqlDataAdapter 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。
當 SelectCommand (或任何其他命令屬性) 指派給先前建立 SqlCommand的 時, SqlCommand 不會複製 。 會 SelectCommand 維護先前建立 SqlCommand 之 對象的參考。
另請參閱
適用於
SqlDataAdapter(String, SqlConnection)
使用 SqlDataAdapter 和 SelectCommand 物件,初始化 SqlConnection 類別的新執行個體。
public:
SqlDataAdapter(System::String ^ selectCommandText, System::Data::SqlClient::SqlConnection ^ selectConnection);
public SqlDataAdapter (string selectCommandText, System.Data.SqlClient.SqlConnection selectConnection);
new System.Data.SqlClient.SqlDataAdapter : string * System.Data.SqlClient.SqlConnection -> System.Data.SqlClient.SqlDataAdapter
Public Sub New (selectCommandText As String, selectConnection As SqlConnection)
參數
- selectCommandText
- String
String,即要由 SelectCommand 的 SqlDataAdapter 屬性使用的 Transact-SQL SELECT 陳述式或預存程序。
- selectConnection
- SqlConnection
表示連接的 SqlConnection。 如果您的連接字串不使用 Integrated Security = true
,您便可以使用 SqlCredential 來傳遞使用者 ID 和密碼,這種方式比在連接字串中以文字指定使用者 ID 和密碼來得更加安全。
範例
下列範例會建立 並 SqlDataAdapter 設定其部分屬性。
public static SqlDataAdapter CreateSqlDataAdapter(string commandText,
SqlConnection connection)
{
SqlDataAdapter adapter = new SqlDataAdapter(commandText, connection);
adapter.MissingSchemaAction = MissingSchemaAction.AddWithKey;
// Create the other commands.
adapter.InsertCommand = new SqlCommand(
"INSERT INTO Customers (CustomerID, CompanyName) " +
"VALUES (@CustomerID, @CompanyName)");
adapter.UpdateCommand = new SqlCommand(
"UPDATE Customers SET CustomerID = @CustomerID, CompanyName = @CompanyName " +
"WHERE CustomerID = @oldCustomerID");
adapter.DeleteCommand = new SqlCommand(
"DELETE FROM Customers WHERE CustomerID = @CustomerID");
// Create the parameters.
adapter.InsertCommand.Parameters.Add("@CustomerID",
SqlDbType.Char, 5, "CustomerID");
adapter.InsertCommand.Parameters.Add("@CompanyName",
SqlDbType.VarChar, 40, "CompanyName");
adapter.UpdateCommand.Parameters.Add("@CustomerID",
SqlDbType.Char, 5, "CustomerID");
adapter.UpdateCommand.Parameters.Add("@CompanyName",
SqlDbType.VarChar, 40, "CompanyName");
adapter.UpdateCommand.Parameters.Add("@oldCustomerID",
SqlDbType.Char, 5, "CustomerID").SourceVersion = DataRowVersion.Original;
adapter.DeleteCommand.Parameters.Add("@CustomerID",
SqlDbType.Char, 5, "CustomerID").SourceVersion = DataRowVersion.Original;
return adapter;
}
Public Function CreateSqlDataAdapter(ByVal commandText As String, _
ByVal connection As SqlConnection) As SqlDataAdapter
Dim adapter As New SqlDataAdapter(commandText, connection)
adapter.MissingSchemaAction = MissingSchemaAction.AddWithKey
' Create the commands.
adapter.InsertCommand = New SqlCommand( _
"INSERT INTO Customers (CustomerID, CompanyName) " & _
"VALUES (@CustomerID, @CompanyName)")
adapter.UpdateCommand = New SqlCommand( _
"UPDATE Customers SET CustomerID = @CustomerID, CompanyName = @CompanyName " & _
"WHERE CustomerID = @oldCustomerID")
adapter.DeleteCommand = New SqlCommand( _
"DELETE FROM Customers WHERE CustomerID = @CustomerID")
' Create the parameters.
adapter.InsertCommand.Parameters.Add("@CustomerID", _
SqlDbType.Char, 5, "CustomerID")
adapter.InsertCommand.Parameters.Add("@CompanyName", _
SqlDbType.VarChar, 40, "CompanyName")
adapter.UpdateCommand.Parameters.Add("@CustomerID", _
SqlDbType.Char, 5, "CustomerID")
adapter.UpdateCommand.Parameters.Add("@CompanyName", _
SqlDbType.VarChar, 40, "CompanyName")
adapter.UpdateCommand.Parameters.Add("@oldCustomerID", _
SqlDbType.Char, 5, "CustomerID").SourceVersion = DataRowVersion.Original
adapter.DeleteCommand.Parameters.Add("@CustomerID", _
SqlDbType.Char, 5, "CustomerID").SourceVersion = DataRowVersion.Original
Return adapter
End Function
備註
如果尚未開啟,則會開啟並關閉的這個實 SqlDataAdapter 作 SqlConnection 。 這在必須針對兩個或多個SqlDataAdapter物件呼叫 Fill 方法的應用程式中很有用。 SqlConnection如果 已經開啟,您必須明確呼叫 Close 或 Dispose 以關閉它。
建立 的 SqlDataAdapter 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
SqlDataAdapter(String, String)
使用 SqlDataAdapter 和連接字串,初始化 SelectCommand 類別的新執行個體。
public:
SqlDataAdapter(System::String ^ selectCommandText, System::String ^ selectConnectionString);
public SqlDataAdapter (string selectCommandText, string selectConnectionString);
new System.Data.SqlClient.SqlDataAdapter : string * string -> System.Data.SqlClient.SqlDataAdapter
Public Sub New (selectCommandText As String, selectConnectionString As String)
參數
- selectCommandText
- String
String,即要由 SelectCommand 的 SqlDataAdapter 屬性使用的 Transact-SQL SELECT 陳述式或預存程序。
- selectConnectionString
- String
連接字串。 如果您的連接字串不使用 Integrated Security = true
,您可以使用 SqlDataAdapter(String, SqlConnection) 和 SqlCredential 傳遞使用者 ID 和密碼,比起在連接字串中將使用者 ID 和密碼指定為文字更安全。
範例
下列範例會建立 並 SqlDataAdapter 設定其部分屬性。
public static SqlDataAdapter CreateSqlDataAdapter(string commandText,
string connectionString)
{
SqlDataAdapter adapter = new SqlDataAdapter(commandText, connectionString);
SqlConnection connection = adapter.SelectCommand.Connection;
adapter.MissingSchemaAction = MissingSchemaAction.AddWithKey;
// Create the commands.
adapter.InsertCommand = new SqlCommand(
"INSERT INTO Customers (CustomerID, CompanyName) " +
"VALUES (@CustomerID, @CompanyName)", connection);
adapter.UpdateCommand = new SqlCommand(
"UPDATE Customers SET CustomerID = @CustomerID, CompanyName = @CompanyName " +
"WHERE CustomerID = @oldCustomerID", connection);
adapter.DeleteCommand = new SqlCommand(
"DELETE FROM Customers WHERE CustomerID = @CustomerID", connection);
// Create the parameters.
adapter.InsertCommand.Parameters.Add("@CustomerID",
SqlDbType.Char, 5, "CustomerID");
adapter.InsertCommand.Parameters.Add("@CompanyName",
SqlDbType.VarChar, 40, "CompanyName");
adapter.UpdateCommand.Parameters.Add("@CustomerID",
SqlDbType.Char, 5, "CustomerID");
adapter.UpdateCommand.Parameters.Add("@CompanyName",
SqlDbType.VarChar, 40, "CompanyName");
adapter.UpdateCommand.Parameters.Add("@oldCustomerID",
SqlDbType.Char, 5, "CustomerID").SourceVersion = DataRowVersion.Original;
adapter.DeleteCommand.Parameters.Add("@CustomerID",
SqlDbType.Char, 5, "CustomerID").SourceVersion = DataRowVersion.Original;
return adapter;
}
Public Function CreateSqlDataAdapter(ByVal commandText As String, _
ByVal connectionString As String) As SqlDataAdapter
Dim adapter As New SqlDataAdapter(commandText, connectionString)
Dim connection As SqlConnection = adapter.SelectCommand.Connection
adapter.MissingSchemaAction = MissingSchemaAction.AddWithKey
' Create the commands.
adapter.InsertCommand = New SqlCommand( _
"INSERT INTO Customers (CustomerID, CompanyName) " & _
"VALUES (@CustomerID, @CompanyName)", connection)
adapter.UpdateCommand = New SqlCommand( _
"UPDATE Customers SET CustomerID = @CustomerID, CompanyName = @CompanyName " & _
"WHERE CustomerID = @oldCustomerID", connection)
adapter.DeleteCommand = New SqlCommand( _
"DELETE FROM Customers WHERE CustomerID = @CustomerID", connection)
' Create the parameters.
adapter.InsertCommand.Parameters.Add("@CustomerID", _
SqlDbType.Char, 5, "CustomerID")
adapter.InsertCommand.Parameters.Add("@CompanyName", _
SqlDbType.VarChar, 40, "CompanyName")
adapter.UpdateCommand.Parameters.Add("@CustomerID", _
SqlDbType.Char, 5, "CustomerID")
adapter.UpdateCommand.Parameters.Add("@CompanyName", _
SqlDbType.VarChar, 40, "CompanyName")
adapter.UpdateCommand.Parameters.Add("@oldCustomerID", _
SqlDbType.Char, 5, "CustomerID").SourceVersion = DataRowVersion.Original
adapter.DeleteCommand.Parameters.Add("@CustomerID", _
SqlDbType.Char, 5, "CustomerID").SourceVersion = DataRowVersion.Original
Return adapter
End Function
備註
建構函式的 SqlDataAdapter 這個多載會 selectCommandText
使用 參數來設定 SelectCommand 屬性。
SqlDataAdapter將會建立和維護使用 參數建立的連接selectConnectionString
。
建立 的 SqlDataAdapter 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。