OleDbDataReader.Read Method

Definition

Namespace:

System.Data.OleDb

Assembly:

System.Data.OleDb.dll

Package:

System.Data.OleDb v10.0.0-preview.1.25080.5

Source:

OleDbDataReader.cs

Advances the OleDbDataReader to the next record.

C#

public override bool Read();

Returns

Boolean

true if there are more rows; otherwise, false.

Examples

The following example creates an OleDbConnection, an OleDbCommand, and an OleDbDataReader. The example reads through the data, writing it out to the console. Finally, the example closes the OleDbDataReader and then the OleDbConnection.

C#

private static void ReadData(string connectionString)
{
    string queryString = "SELECT OrderID, CustomerID FROM Orders";
    using (OracleConnection connection = new OracleConnection(connectionString))
    {
        OracleCommand command = new OracleCommand(queryString, connection);
        connection.Open();
        OracleDataReader reader;
        reader = command.ExecuteReader();

        // Always call Read before accessing data.
        while (reader.Read())
        {
            Console.WriteLine(reader.GetInt32(0) + ", " + reader.GetString(1));
        }

        // Always call Close when done reading.
        reader.Close();
    }
}

Remarks

The default position of the OleDbDataReader is before the first record. Therefore, you must call Read to start accessing any data.

While the OleDbDataReader is being used, the associated OleDbConnection is busy serving it until you call Close.

Applies to

See also

• DataAdapters and DataReaders