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IDbDataAdapter Interface

Represents a set of command-related properties that are used to fill the DataSet and update a data source, and is implemented by .NET Framework data providers that access relational databases.

Namespace: System.Data
Assembly: System.Data (in system.data.dll)

'Declaration
Public Interface IDbDataAdapter
	Inherits IDataAdapter
'Usage
Dim instance As IDbDataAdapter

public interface IDbDataAdapter extends IDataAdapter
public interface IDbDataAdapter extends IDataAdapter

The IDbDataAdapter interface inherits from the IDataAdapter interface and allows an object to create a DataAdapter designed for use with a relational database. The IDbDataAdapter interface and, optionally, the utility class, DbDataAdapter, allow an inheriting class to implement a DataAdapter class, which represents the bridge between a data source and a DataSet. For more information about DataAdapter classes, see Populating a DataSet from a DataAdapter. For more information about implementing .NET Framework data providers, see Implementing a .NET Framework Data Provider.

An application does not create an instance of the IDbDataAdapter interface directly, but creates an instance of a class that inherits IDbDataAdapter and DbDataAdapter.

Classes that inherit IDbDataAdapter must implement the inherited members, and typically define additional members to add provider-specific functionality. For example, the IDbDataAdapter interface defines the SelectCommand property, and the DbDataAdapter interface defines a Fill method that takes a DataTable as a parameter. In turn, the OleDbDataAdapter class inherits the SelectCommand property and the Fill method, and also defines two additional overloads of the Fill method that take an ADO Recordset object as a parameter.

Notes to Implementers To promote consistency among .NET Framework data providers, name the inheriting class in the form Prv DataAdapter where Prv is the uniform prefix given to all classes in a specific .NET Framework data provider namespace. For example, Sql is the prefix of the SqlDataAdapter class in the System.Data.SqlClient namespace. When you inherit from the IDbDataAdapter interface, you should implement the following constructors:

Item

Description

PrvDataAdapter()

Initializes a new instance of the PrvDataAdapter class.

PrvDataAdapter(PrvCommand selectCommand)

Initializes a new instance of the PrvDataAdapter class with the specified SQL SELECT statement.

PrvDataAdapter(string selectCommandText, string selectConnectionString)

Initializes a new instance of the PrvDataAdapter class with an SQL SELECT statement and a connection string.

PrvDataAdapter(string selectCommandText, PrvConnection selectConnection)

Initializes a new instance of the PrvDataAdapter class with an SQL SELECT statement and a PrvConnection object.

The following example uses the derived classes, SqlCommand, SqlDataAdapter and SqlConnection, to select records from a data source. The filled DataSet is then returned. To accomplish this, the method is passed an initialized DataSet, a connection string, and a query string that is a Transact-SQL SELECT statement.

Public Function SelectRows( _
    ByVal dataSet As DataSet, ByVal connectionString As String, _
    ByVal queryString As String) As DataSet

    Using connection As New SqlConnection(connectionString)
        Dim adapter As New SqlDataAdapter()
        adapter.SelectCommand = New SqlCommand( _
            queryString, connection)
        adapter.Fill(dataSet)
        Return dataSet
    End Using
End Function

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

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