DataLoadOptions

DataLoadOptions is a class found in the System.Data.OleDb namespace of the .NET framework. It was introduced to provide developers with greater flexibility when loading data from OLE DB data sources into application objects such as DataSets or DataTables. By specifying a DataLoadOptions instance, code can control how recordsets are fetched, when schema information is retrieved, and how the data is cached in memory.

Typical usage occurs in conjunction with the OleDbDataAdapter. A developer creates a DataLoadOptions object, sets its properties to indicate the desired loading strategy, and then assigns it to the adapter’s LoadOptions property before calling Fill. Common settings include eager data retrieval versus lazy loading, the maximum number of rows to prefetch, and whether to automatically generate column names if the result set lacks metadata. These options can reduce round‑trips to the database and improve performance for read‑heavy applications.

The class exposes a handful of properties that map to underlying OLE DB provider capabilities. For example, LoadOption is an enumeration that includes values such as LoadOption=None, LoadOption.Prefetch, and LoadOption.OnDemand. DateTime caching can also be configured to avoid repeated parsing of date strings. While DataLoadOptions is specific to OLE DB providers, similar concepts exist in other data access technologies such as the Entity Framework’s context options or the DataTable.LoadOptimized method.

Developers should consider the capabilities and limits of their OLE DB provider when using DataLoadOptions. Some providers may ignore unsupported options or return errors if an unsupported combination is requested. The .NET documentation and provider-specific guides typically detail which options are available for each backend service.