Group Binding to a Gridview

[Qasim Ali]

I have three database tables

1. Category(Id, Name)
2. Definitions( ID, Modified, CatergoryID)
3. Versions (ID, Name, Template, DefinitionID)

I have generted Entity Data Model (EDM). It has generated 3 entities

1. Category
Scalar Properties
ID
Name
Navigation Properties
Definitions

2. Definition
Scalar Properties
ID
Modified
Navigation Properties
Category

3. Version
Scalar Properties
ID
Name
Template
Navigation Properties
Definitions

I want to get All versions and show on a gridview grouping by Category.
How I can complete this task using EntityDatasource and also give me clue to bind gridview using Ajax Accordion Please.

[kvprajapati]

Use templated column and add another gridview into an area of templated column whose datasource's where clause is evaluated by the value of primary key's content.

[Qasim Ali]

I have to use ASP.Net Gridview and AJAX Accordion

[Qasim Ali]

I need it urgent Please.