/// <summary>
/// Advances the <see cref="T:System.Data.IDataReader"/> to the next record.
/// </summary>
/// <returns>
/// true if there are more rows; otherwise, false.
/// </returns>
public bool Read()
{
if (MapiLib.MapiFetchRow(_queryHandle) > 0)
{
DieQueryError();
return(true);
}
return(false);
}
/// <summary>
/// Executes the query, and returns the first column of the first row in the resultset returned by the query. Extra
/// columns or rows are ignored.
/// </summary>
/// <returns>
/// The first column of the first row in the resultset.
/// </returns>
public object ExecuteScalar()
{
var connHandle = _connection.GetConnectionHandle();
var queryHandle = MapiFactory.GetQueryHandle(connHandle, CommandText);
object result = null;
if (MapiLib.MapiFetchRow(queryHandle) > 0)
{
MapiFactory.DieQueryError(connHandle, queryHandle);
result = MapiLib.MapiFetchField(queryHandle, 0);
MapiFactory.DieQueryError(connHandle, queryHandle);
}
MapiFactory.CloseQueryHandle(queryHandle);
return(result);
}
