Sorting and grouping does not work anymore

[Ewald]

I am building up the grid dynamically based on metadata. When I started building the grid, the sorting and grouping worked. Then after some time I found out that it is not working anymore. When I click on the column header, the SortCommand event is not raised. I checked that the AllowSorting property is set to true.

I tried to find out what caused the sorting to stop working, but cannot find it. What could cause this?

PS I use the __EVENTARGS in a postback to indicate what action the user wants to be performed. Do you use that too?

[Shinu]

Hello Ewald,

I suppose you are binding the grid using Simple data binding technique. If you are using any advanced feature in grid(like paging), then a better approach is binding RadGrid using "AdvancedData binding" using NeedDataSource event.

For more information about this can be available here.
Advanced Data-binding (using NeedDataSource event).
Grid / Advanced Data Binding.

Thanks,
Shinu.

[Ewald]

I already use the advanced data binding because I have my custom paging logic. Sorting and grouping worked with this construction already. So that did not cause it.

My question is more what happens if a user clicks on a column header when he is sorting. How does the grid knows it has to sort on a column on postback?

[Ewald]

I found the solution. I changed the ID of the grid on every postback. Giving it the same ID on every postback solved the issue