[Solved] Only display top 3 rows of results

[Jonathon]

Hi,

I was wondering, how would I display only the top 3 rows? The GridView is in a small area and I want to do something similar to RadDataPager's PageSize="3" without actually displaying anything other than the GridView. RadDataPager has DisplayMode, however, there is no "None" option.

Thanks,

Jonathon

[Rossen Hristov]

Hi Jonathon,

RadGridView.Items implements the IPagedCollectionView interface, so you could try setting RadGridView.Items.PageSize to 3. You will be paging the grid without a pager. In fact, RadDataPager uses this interface to "communicate" its paging instructions to RadGridView. But you can take its place and issue all paging commands by hand if you want to. Take a look at the IPagedCollectionView interface for more info.

Alternatively, you can leave only the first three rows in your source collection and RadGridView will display only those 3 rows. You can use LINQ to do something like sourceCollection.Take(3) which will take only the first three records.

I hope this helps.

All the best,
Ross
the Telerik team

[Jonathon]

Thanks.

I was wondering, is there a way to use IPagedCollectionView you showed first using MVVM so I don't have any code behind?

Jonathon

[Rossen Hristov]

Hi Jonathon,

I don't think so.

Anyway, MVVM is not a synonym for "absolutely no code-behind". Sooner or later you eventually reach some code-behind that does all the job. In most cases that would be the code-behind of the framework or of our controls, but in some cases it will be yours. You can "hide" your code-behind by using attached behaviors if you wish. The you won't have any code-behind on your page, since it will be in your attached behavior. But it has to be somewhere.

I hope this makes sense.

Regards,
Ross
the Telerik team