My current solution is a method in the class "Device" that just goes back via a "return" command and so the Row Updating from my code behind is doing the job... I think it would be useful for you: Hm thank You for Your answer, but it is not possible to use the Update-Event of the grid right?
The first code example demonstrates how to use a Drop Down List control, Text Box controls, and several Object Data Source objects to update data.event to perform additional initialization that is specific to your application, to validate the values of parameters, or to change the parameter values before the Object Data Source control performs the update operation.The parameters are available as an IDictionary collection that is accessed by the The following three examples show a Web page, a code-behind page class, and a data-access class that enable a user to retrieve and update records in the Employees table in the Northwind database. Now I need a method for updating data and for this I cannot use the class Device, so I would like to use the "Row Updating" method of that grid from the code behind.I want to use the Row Updating-method from my code behind and not the update method from that Object Data Source. Maybe you have to write a class directly for that Grid View to delegate the update and select methods to other objects.