Read Method

OdbcDataReader.Read Method ()

 

Advances the OdbcDataReader to the next record.

Namespace:   System.Data.Odbc
Assembly:  System.Data (in System.Data.dll)

public override bool Read()

Return Value

Type: System.Boolean

true if there are more rows; otherwise false.

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

While the OdbcDataReader is being used, the associated OdbcConnection is busy serving it until you call Close.

The following example creates an OdbcConnection, an OdbcCommand, and an OdbcDataReader. The example reads through the data, writing it out to the console. Finally, the example closes the OdbcDataReader, and then the OdbcConnection.

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();
    }
}

.NET Framework
Available since 1.1
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