How to implement the master detail GridView with editing capabilities

This example illustrates how to implement the master detail GridView with editing capabilities.
Perform the following steps to define the master-detail layout:
1) Define both master and detail GridView settings within separate PartialView files (see the Using Callbacks);
2) Set the master grid's SettingsDetail.ShowDetailRow property to "True";
3) Define the master grid's DetailRow content via the SetDetailRowTemplateContent method and render the detail grid's PartialView inside.

Note:
Values passed in a detail grid's CallbackRoute must have a unique name and must not replicate any other names on a page: Q577974: GridView - "The parameters dictionary contains a null entry for parameter 'id' of non-nullable type 'System.Int32'" error occurs when canceling editing in the detail GridView