OleDbDataAdapter Constructors

Reference

Definition

Namespace:: System.Data.OleDb

Assembly:: System.Data.OleDb.dll

Assembly:: System.Data.dll

Package:: System.Data.OleDb v8.0.1

Package:: System.Data.OleDb v9.0.0-rc.2.24473.5

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.

Initializes a new instance of the OleDbDataAdapter class.

Overloads

OleDbDataAdapter()	Initializes a new instance of the OleDbDataAdapter class.
OleDbDataAdapter(OleDbCommand)	Initializes a new instance of the OleDbDataAdapter class with the specified OleDbCommand as the SelectCommand property.
OleDbDataAdapter(String, OleDbConnection)	Initializes a new instance of the OleDbDataAdapter class with a SelectCommand.
OleDbDataAdapter(String, String)	Initializes a new instance of the OleDbDataAdapter class with a SelectCommand.

OleDbDataAdapter()

Source:: OleDbDataAdapter.cs

Source:: OleDbDataAdapter.cs

Source:: OleDbDataAdapter.cs

Source:: OleDbDataAdapter.cs

Source:: OleDbDataAdapter.cs

Initializes a new instance of the OleDbDataAdapter class.

public:
 OleDbDataAdapter();

public OleDbDataAdapter ();

Public Sub New ()

Examples

The following example creates an OleDbDataAdapter and sets some of its properties.

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

Remarks

When you create an instance of OleDbDataAdapter, the following read/write properties are set to the following initial values.

Properties	Initial value
MissingMappingAction	`MissingMappingAction.Passthrough`
MissingSchemaAction	`MissingSchemaAction.Add`

You can change the value of any of these properties through a separate call to the property.

Applies to

OleDbDataAdapter(OleDbCommand)

Source:: OleDbDataAdapter.cs

Source:: OleDbDataAdapter.cs

Source:: OleDbDataAdapter.cs

Source:: OleDbDataAdapter.cs

Source:: OleDbDataAdapter.cs

Initializes a new instance of the OleDbDataAdapter class with the specified OleDbCommand as the SelectCommand property.

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)

Parameters

selectCommand: OleDbCommand

An OleDbCommand that is a SELECT statement or stored procedure, and is set as the SelectCommand property of the OleDbDataAdapter.

Examples

The following example creates an OleDbDataAdapter and sets some of its properties.

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

Remarks

This implementation of the OleDbDataAdapter constructor sets the SelectCommand property to the value specified in the selectCommand parameter.

When you create an instance of OleDbDataAdapter, the following read/write properties are set to the following initial values.

Properties	Initial value
MissingMappingAction	`MissingMappingAction.Passthrough`
MissingSchemaAction	`MissingSchemaAction.Add`

You can change the value of any of these properties through a separate call to the property.

Applies to

OleDbDataAdapter(String, OleDbConnection)

Source:: OleDbDataAdapter.cs

Source:: OleDbDataAdapter.cs

Source:: OleDbDataAdapter.cs

Source:: OleDbDataAdapter.cs

Source:: OleDbDataAdapter.cs

Initializes a new instance of the OleDbDataAdapter class with a SelectCommand.

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)

Parameters

selectCommandText: String

A string that is an SQL SELECT statement or stored procedure to be used by the SelectCommand property of the OleDbDataAdapter.

selectConnection: OleDbConnection

An OleDbConnection that represents the connection.

Examples

The following example creates an OleDbDataAdapter and sets some of its properties.

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

Remarks

This implementation of the OleDbDataAdapter opens and closes an OleDbConnection if it is not already open. This can be useful in an application that must call the Fill method for two or more OleDbDataAdapter objects. If the OleDbConnection is already open, you must explicitly call Close or Dispose to close it.

When you create an instance of OleDbDataAdapter, the following read/write properties are set to the following initial values.

Properties	Initial value
MissingMappingAction	`MissingMappingAction.Passthrough`
MissingSchemaAction	`MissingSchemaAction.Add`

You can change the value of either of these properties through a separate call to the property.

Applies to

OleDbDataAdapter(String, String)

Source:: OleDbDataAdapter.cs

Source:: OleDbDataAdapter.cs

Source:: OleDbDataAdapter.cs

Source:: OleDbDataAdapter.cs

Source:: OleDbDataAdapter.cs

Initializes a new instance of the OleDbDataAdapter class with a SelectCommand.

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)

Parameters

selectCommandText: String

A string that is an SQL SELECT statement or stored procedure to be used by the SelectCommand property of the OleDbDataAdapter.

selectConnectionString: String

The connection string.

Examples

The following example creates an OleDbDataAdapter and sets some of its properties.

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

Remarks

This overload of the OleDbDataAdapter constructor uses the selectConnectionString parameter to set the SelectCommand property. However, it does not open the connection. You still must explicitly open the connection.

When you create an instance of OleDbDataAdapter, the following read/write properties are set to the following initial values.

Properties	Initial value
MissingMappingAction	`MissingMappingAction.Passthrough`
MissingSchemaAction	`MissingSchemaAction.Add`

You can change the value of any of these properties through a separate call to the property.

Applies to

Zdieľať cez

OleDbDataAdapter Constructors

Definition

Overloads

OleDbDataAdapter()

Examples

Remarks

See also

Applies to

OleDbDataAdapter(OleDbCommand)

Parameters

Examples

Remarks

See also

Applies to

OleDbDataAdapter(String, OleDbConnection)

Parameters

Examples

Remarks

See also

Applies to

OleDbDataAdapter(String, String)

Parameters

Examples

Remarks

See also

Applies to

Ďalšie zdroje informácií