Auction Object
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Use this object to provide auction capabilities to a site. This object enables a site to auction products, accept bids, and determine winners, using rules ranging from simple to sophisticated. Users can set reserve prices, minimum bids, start and end dates, bid increments, and resolve bid conflicts. Users can also notify auction participants of important news via DHTML, HTML, or e-mail at any interval.
| ProgID: | Commerce.Auction (Externally creatable) |
| COM Class Name: | Auction |
| Type Library Name: | Commerce Server 4.0 Auction Component |
| DLL Name: | auction.dll |
| Threading Model: | Apartment |
The properties of the Auction object are shown in the following table.
| Property | Type | Description |
| AuctionID | String | Stores the AuctionID GUID
This property is read-only. |
| dtAMT | Date | Stores the date/time stamp used by the auction engine.
This property is read/write. |
| objMessageManager | Object | Stores the MessageManager object used to generate error messages.
This property is read/write. |
| szBidOrderBy | String | Stores the sort string used to resolve ties.
This property is read/write. |
| szBidTableName | String | Stores the name of the Bid table in the database.
This property is read/write. |
| szDSN | String | Stores the connection string for the database.
This property is read/write. |
| szItemTableName | String | Stores the name of the Item table in the database.
This property is read/write. |
| szLanguage | String | Stores the language used in by the MessageManager object when generating error messages.
This property is read/write. |
The methods of the Auction object are shown in the following table.
| Method | Description |
| AuctionAddBid | Adds or updates a bid on an auction. |
| AuctionAddItem | Adds a new auction item to the Auction database. |
| AuctionBidNormalize | Normalizes a bid to the bid increment amount. |
| AuctionDeleteBid | Deletes a bid in an auction. |
| AuctionDeleteBids | Deletes all bids in a particular auction. |
| AuctionDeleteItem | Deletes an item and all bids on the item in a particular auction. |
| AuctionGetBid | Returns a rowset containing a bid from a specific user for a specific auction item. |
| AuctionGetBids | Returns a rowset containing all bids for an auction item. |
| AuctionGetItem | Returns a rowset for the item up for auction. |
| AuctionGetStatus | Returns a Dictionary object containing rowsets for the item up for auction. |
| AuctionInit | Initializes the Auction object. |
| AuctionRandomBids | Adds random bids to an auction to aid testing. |
| AuctionResolve | Resolves the auction based on the current settings and rules. |
| AuctionUpdateItem | Updates an auction item in the Auction database. |
Remarks
The Auction object depends on the presence of the Item and Bid tables, stored in the site database, and a MessageManager object to hold the error messages. The tables must be created before using the Auction object for the first time. The MessageManager object must be properly initialized for the Auction object to pass error messages back to the user.