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This article introduces the relevant knowledge of "how to use DevExpress to achieve CRUD operation". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

System background

Platform: WPF

Product: DXGrid for WPF

This article will show you how to use LinqInstantFeedbackDataSource or LinqServerModeDataSource with DXGrid, and how to implement CRUD operations in your application through special behavior (for example, add, delete, edit).

Note that this test sample requires the SQL Express service to be installed on your computer.

We create LINQServerModeCRUDBehavior and LINQInstantModeCRUDBehavior additional operations for GridControl, such as:

The LINQServerModeCRUDBehavior and LINQInstantModeCRUDBehavior classes contain NewRowForm and EditRowForm properties to provide "Add Row" and "EditRow" operations. Using these properties, you can create add and edit forms as needed:

These action classes require the following information in your data model:

RowType-Type of row

DataContext-Database entity

An object of type DataSource-LinqInstantFeedbackDataSource or LinqServerModeDataSource.

See the LinqServerModeDataSource and LinqInstantFeedbackDataSource classes for more information about LinqServerModeDataSource and LinqInstantFeedbackDataSource.

Descendants of action classes support the following commands: NewRowCommand, RemoveRowCommand, EditRowCommand, which you can easily bind interactive controls to, for example:

AddRemoveEdit

By default, LINQServerModeCRUDBehavior and LINQInstantModeCRUDBehavior solutions support the following end-user interaction features:

The end user can edit the selected row value by double-clicking the grid row or pressing the Enter key if the AllowKeyDownActions attribute is True.

If the AllowKeyDownActions property is True, the end user can delete the selected row with the delete key.

End users can add, delete, and edit new lines through the NewRowCommand, RemoveRowCommand, and EditRowCommand commands.

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