/// <summary>
/// Returns a value indicating
/// whether the specified field
/// is set to null.
/// </summary>
/// <param name="ordinal">The zero-based
/// column ordinal.</param>
public bool IsDBNull(int ordinal)
{
if (_lookup.Contains(ordinal))
{
return(_dataRecord.IsDBNull(ordinal));
}
return(true);
}
/// <summary>
/// Gets the value indicating whether the
/// specified field exists in the row.
/// </summary>
/// <param name="key">The name of the field to find.</param>
public bool ContainsKey(string key)
{
return(_lookup.Contains(key));
}