Radgrid datasource not updating
If you need to brush up on implementing these features within the Grid View, Details View, and Form View, return to the Editing, Inserting, and Deleting Data tutorials, starting with An Overview of Inserting, Updating, and Deleting.
collection and can include hard-coded values, common parameter source values (querystring fields, session variables, Web control values, and so on), or can be programmatically assigned.
As discussed in An Overview of Inserting, Updating, and Deleting, the Grid View control provides built-in updating and deleting capabilities, while the Details View and Form View controls include inserting support along with editing and deleting functionality.
These data modification capabilities can be plugged directly into a data source control without a line of code needing to be written.
Visit the page in a browser and note the Edit, Delete, and New buttons included in the Details View.
As Figure 4 shows, when the page is visited through a browser a Delete button is included. Figure 4: Each Grid View Row Now Includes a Delete Button (Click to view full-size image) Upon clicking a Delete button, a postback occurs, the Grid View assigns the Figure 5 depicts this interaction graphically.
Refer back to the Examining the Events Associated with Inserting, Updating, and Deleting tutorial for a more detailed discussion on the chain of events associated with inserting, updating, and deleting from a data Web control.
When the Sql Data Source control s method is invoked either programmatically or automatically from a data Web control a connection to the database is established, the parameter values are assigned to the query, and the command is shuttled off to the database.
The results are then returned as either a Data Set or Data Reader, depending on the value of the control s value has been specified, the Enable Inserting, Enable Editing, or Enable Deleting option in the corresponding data Web control s smart tag will become available.
An Overview of Inserting, Updating, and Deleting examined using the Object Data Source to facilitate inserting, updating, and deleting with the Grid View, Details View, and Form View controls.