OleDbDataAdapter コンストラクタ ()

OleDbDataAdapter クラスの新しいインスタンスを初期化します。

名前空間: System.Data.OleDb
アセンブリ: System.Data (system.data.dll 内)

構文

'宣言
Public Sub New
'使用
Dim instance As New OleDbDataAdapter

public OleDbDataAdapter ()

public:
OleDbDataAdapter ()

public OleDbDataAdapter ()

public function OleDbDataAdapter ()

解説

OleDbDataAdapter のインスタンスを作成すると、次のように読み取り/書き込みプロパティが初期値に設定されます。

これらのプロパティの値は、各プロパティを個別に呼び出して変更できます。

使用例

OleDbDataAdapter を作成し、そのプロパティの一部を設定する例を次に示します。

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

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;
}

using System;
using System.Data;
using System.Data.OleDb;

class Class1
{
    static void Main()
    {
    }

    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;
    }

プラットフォーム

Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

開発プラットフォームの中には、.NET Framework によってサポートされていないバージョンがあります。サポートされているバージョンについては、「システム要件」を参照してください。

バージョン情報

.NET Framework

サポート対象 : 2.0、1.1、1.0

参照

関連項目

OleDbDataAdapter クラス
OleDbDataAdapter メンバ
System.Data.OleDb 名前空間

その他の技術情報

DataAdapter の使用
DataAdapter の使用