System.Web 2.0.0.0 This interface is designed to be used with Web Parts connections. In a Web Parts connection, two server controls that reside in a zone establish a connection and share data, with one control acting as the consumer and the other control acting as a provider. The mechanism for sharing data in a Web Parts connection is an interface instance, which the provider serves to the consumer by means of a callback method. To establish a connection, the consumer and provider must both work with the same interface type for sharing data. If the consumer does not recognize the interface type sent by the provider, it is still possible to connect the controls by means of a transformer (a object) that translates the interface instance sent by the provider into a type that the consumer recognizes. For details on connections, see and Web Parts Connections Overview. The interface is a provider interface included with the Web Parts control set as a standard interface for creating connections based on a data row. You can also create custom interfaces to use with Web Parts connections, but in many data-driven Web applications, it is useful to create connections based on a common field (for details, see the interface), table (for details, see the interface), or row from the data source. In a typical connection, a control acting as a provider would implement the interface and provide an instance of the interface to consumers in a special callback method. For example, the provider might implement an interface for a row that corresponds to a user in your user information table. Another control acting as a consumer would define a special method to receive the interface instance, and could then extract the user data, use it to look up additional information about that user's accounts, and display all the information related to that user on the page. The interface has two exposed members. The property returns schema information about the data row encapsulated in a object. The method declares a method that an implementer (such as a provider control) uses to retrieve the interface instance's row data when the callback method is invoked.

Defines a provider interface for connecting two server controls using a single field of data.

Method System.Void Use this method to retrieve the data row values passed by the interface. The provider implements this method, and the consumer invokes it at the point when the consumer is ready to process or render data.

Returns the data for the row that is being used by the interface as the basis of a connection between two controls.

A delegate that contains the address of a method that receives the data. 2.0.0.0 Property System.ComponentModel.PropertyDescriptorCollection To be added. This property provides property information for the data. Using the interface in a connection, you get a object, which is referenced by the property. The contract specifies that calling Schema[n].GetValue(RowData) returns the value of the nth column in the row. You need to use the property to get the values in the row.

Gets the schema information for a data row that is used to share data between two controls.

2.0.0.0