Cell color change suddenly

[Jose]

Hi,
I have a problem when I'm trying to change the background of a cell.
I'm using the following statement:

GridViewItemContainerGenerator container = grid.ItemContainerGenerator;
GridViewRow actualRow = null;
for (int i = row; i <= rowSel; i++)
    actualRow = container.ContainerFromIndex(i) as GridViewRow;
    for (int j = col; j <= colSel; j++)
    {
       actualRow.Cells[j].Background = new System.Windows.Media.SolidColorBrush((Color)value);
    }
}

But when I have more columns than the showed in the grid and I want to see them by moving the scroll bar the color suddenly disappear.
I notice that the number of RadGridView's cells is less than the real number when I have more columns than the showed in the page.
I want to know if I'm doing the right way and  How is the best way to achieve this??

Regards,
José

[Maya]

Hello Jose,

Generally, it is not recommended to work with visual elements and their value - as it is in your case - with cells and their background. Since RadGridView is virtualized, those elements will be recycled and reused. The result of this is the behavior you notice in your application as well.
What I could suggest is to use style selectors instead. 

Kind regards,
Maya
the Telerik team

[Jose]

Hi,
Thank you for your soon answer and your advice.
I've tried to use the Style Selector and it works perfectly.

Regards,
Jose