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How to get the column names in gridview

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answered on 02 Sep 2009, 08:32 AM

Hi Pavel Pavlov ,

Thanks for ur Response..........

My scenario is, i have a gridview, i want to fetch the 5th column or cell content or value......

so now i am using like

(e.Row.Cells(4).Content)

Instead of (e.Row.Cells(4).Content) ,what i need is (e.Row.Cells("Status").Content)

My another doubt is which event i have to use to check the each row, when i bind the data in the grid.......

currently i am using rowLoaded event.........but it first loads all the data and then only this rowLoaded event fires.............

what i need is, the event should be fired when each row is loaded in the gridview....

Thanks & Regards

By

Senthil.S

answered on 05 Jan 2010, 02:49 PM

239257-rowvalidationexample.zip

Hi Jax,

We will introduce some improvements related to this issue with the upcoming service pack. Meanwhile you can take a look at the attached example which demonstrates how to meet your goals. Pay more attention to the PersonValidator class which sets the invalid property name. Steps to get this working:

Put "BirthDay" cell into edit mode.
Leave the edited row (in order to trigger RowValidation).

You will notice that now "Age" cell is in edit mode.
Let me know if it does not help.

Sincerely yours,
Nedyalko Nikolov
the Telerik team

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answered on 07 Jan 2010, 07:53 AM

Thanks for the reply Nedyalko, but my issue isn't to get validation up and running (we have it working fine).
The problem comes in (using your example) when column virtualization is turned on, and the age column is not visible.

In your code, line 32 in MainPage will throw an exception, because the Age column does not exist because it is not visible.
In the meantime, instead of calling
errorCell = e.Row.GetCellFromPropertyName(valResult.PropertyName); //throws exception
I do something like
errorCell = (GridViewCell) e.Row.Cells.Where(c => c.Column.UniqueName == propertyName).FirstOrDefault(); //no exception
if (errorCell != null) // is null if not visible
{ logic here }

What I'm after is to force the grid to navigate to the cell which is not yet visible.

answered on 07 Jan 2010, 02:54 PM

Hi Jax,

Indeed you are right due to horizontal virtualization invisible cells are not created, so you cannot find them. You can scroll RadGridView horizontally with a single line of code which solves the problem. Insert the following code before the line that throws the exception (#32).

this.radGridView.ScrollIntoView(null, this.radGridView.Columns[valResult.PropertyName]);

To clarify what ScrollIntoView() method do with first parameter "null", just brings the column (second parameter) into view. This action creates necessary cell and everything should work fine. Let me know how this works on your end.

Sincerely yours,
Nedyalko Nikolov
the Telerik team

Instantly find answers to your questions on the new Telerik Support Portal.
Watch a video on how to optimize your support resource searches and check out more tips on the blogs.