ADO.NET :: Entity Framework 3.5 / Select Category From Dropdownlist Bind Gridview To All Products Related To This Category?

Nov 5, 2010

i create example using Northwind database so i create a new website and add new ADO.Net Entity Data Model (.edmx) called Northwind.edmx and i add Categories and Products table inside this (.edmx) file

and add new ADO.Net Data Servuce called "ADODataService" and add it as WebReferences called NorthwindService

so i add new web page and drag DropdownList and Gridview as i want to bind Dropdownlist to all categories and when i select category from Dropdownlist bind Gridview to all Products related to this category

so my code

[Code]....

and my code
[Code]....

so when i select category from Dropdownlist nothing happen :(

also you will find commented code in method BindCategory whuch is not work also.

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