Export (0) Print
Expand All

OleDbDataAdapter.UpdateCommand Property

Gets or sets an SQL statement or stored procedure used to update records in the data source.

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

public OleDbCommand UpdateCommand { get; set; }
/** @property */
public OleDbCommand get_UpdateCommand ()

/** @property */
public void set_UpdateCommand (OleDbCommand value)

public function get UpdateCommand () : OleDbCommand

public function set UpdateCommand (value : OleDbCommand)

Not applicable.

Property Value

An OleDbCommand used during Update to update records in the data source that correspond to modified rows in the DataSet.

During Update, if this property is not set and primary key information is present in the DataSet, the UpdateCommand can be generated automatically if you set the SelectCommand property and use the OleDbCommandBuilder. Then, any additional commands that you do not set are generated by the OleDbCommandBuilder. This generation logic requires key column information to be present in the DataSet. For more information, see Automatically Generated Commands.

When UpdateCommand is assigned to a previously created OleDbCommand, the OleDbCommand is not cloned. The UpdateCommand maintains a reference to the previously created OleDbCommand object.

NoteNote:

If execution of this command returns rows, these rows may be merged with the DataSet depending on how you set the .Data.OleDb.OleDbCommand.UpdatedRowSource property of the OleDbCommand object.

The following example creates an OleDbDataAdapter and sets the SelectCommand and UpdateCommand properties. It assumes that you have already created an OleDbConnection object.

private static OleDbDataAdapter CreateCustomerAdapter(
    OleDbConnection connection)
{
    OleDbDataAdapter dataAdapter = new OleDbDataAdapter();
    OleDbCommand command;
    OleDbParameter parameter;

    // Create the SelectCommand.
    command = new OleDbCommand("SELECT * FROM dbo.Customers " +
        "WHERE Country = ? AND City = ?", connection);

    command.Parameters.Add("Country", OleDbType.VarChar, 15);
    command.Parameters.Add("City", OleDbType.VarChar, 15);

    dataAdapter.SelectCommand = command;

    // Create the UpdateCommand.
    command = new OleDbCommand(
        "UPDATE dbo.Customers SET CustomerID = ?, CompanyName = ? " +
        "WHERE CustomerID = ?", connection);

    command.Parameters.Add(
        "CustomerID", OleDbType.Char, 5, "CustomerID");
    command.Parameters.Add(
        "CompanyName", OleDbType.VarChar, 40, "CompanyName");

    parameter = command.Parameters.Add(
        "oldCustomerID", OleDbType.Char, 5, "CustomerID");
    parameter.SourceVersion = DataRowVersion.Original;

    dataAdapter.UpdateCommand = command;

    return dataAdapter;
}

Windows 98, Windows Server 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

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

Community Additions

ADD
Show:
© 2015 Microsoft