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Address Book Data-Binding Object

  • Article

The Address Book application uses the RDS.DataControl object to bind data from the SQL Server database to a visual object (in this case, a DHTML table) in the application's client HTML page. The event-driven VBScript program logic uses the RDS.DataControl to:

Important

Beginning with Windows 8 and Windows Server 2012, RDS server components are no longer included in the Windows operating system (see Windows 8 and Windows Server 2012 Compatibility Cookbook for more detail). RDS client components will be removed in a future version of Windows. Avoid using this feature in new development work, and plan to modify applications that currently use this feature. Applications that use RDS should migrate to WCF Data Service.

  • Query the database, send updates to the database, and refresh the data grid.

  • Allow users to move to the first, next, previous, or last record in the data grid.

The following code defines the RDS.DataControl component:

<OBJECT classid="clsid:BD96C556-65A3-11D0-983A-00C04FC29E33"  
   ID=DC1 Width=1 Height=1>  
   <PARAM NAME="SERVER" VALUE="https://<%=Request.ServerVariables("SERVER_NAME")%>">  
   <PARAM NAME="CONNECT" VALUE="Provider=sqloledb;  
Initial Catalog=AddrBookDb;Integrated Security=SSPI;">  
</OBJECT>

The OBJECT tag defines the RDS.DataControl component in the program. The tag includes two types of parameters:

  • Those associated with the generic OBJECT tag.

  • Those specific to the RDS.DataControl object.

Generic OBJECT Tag Parameters

The following table describes the parameters associated with the OBJECT tag.

Parameter Description
CLASSID A unique, 128-bit number that identifies the type of embedded object to the system. This identifier is maintained in the local computer's system registry. (For the class IDs of the RDS.DataControl object, see RDS.DataControl Object.)
ID Defines a document-wide identifier for the embedded object that is used to identify it in code.

RDS.DataControl Tag Parameters

The following table describes the parameters specific to the RDS.DataControl object. (For a complete list of the RDS.DataControl object parameters, and when to implement them, see RDS.DataControl object.)

Parameter Description
SERVER If you are using HTTP, the value is the name of the server computer preceded by https://.
CONNECT Provides the necessary connection information for the RDS.DataControl to connect to SQL Server.
SQL Sets or returns the query string used to retrieve the Recordset.

See Also

Address Book Command Buttons