Validating event fires twice for Color col

[Thomas]

Hi,

I'm binding a grid to a collection where one of the properties is of type 'Color'.

I want to validate the selected color, as only a subset of colors are allowed.

The validating event fires twice after changing the value of 'Color col' cell. And hence my msg box is shown twice. Any way around this?

private void StatusRadGridView_CellValidating(object sender, CellValidatingEventArgs e)
{
    if (e.ActiveEditor != null && e.ActiveEditor is GridColorPickerEditor)
    {
        Color c = (Color)e.Value;
        if(!AllowedColors.Exists(o=>o.Name == c.Name))
        {
            e.Cancel = true;
            RadMessageBox.Show(errorMsg);
        }
    }
}

[Dess | Tech Support Engineer, Principal]

Hello Thomas,

Thank you for writing.

I have logged it in our feedback portal. You can track its progress, subscribe for status changes and add your vote/comment to it on the following link - feedback item.

I have also updated your Telerik points.

Currently, the possible solution that I can suggest is to use the GridViewDataRowInfo.ErrorText which is designed approach for indicating errors when validation fails.

I hope this information helps. Should you have further questions I would be glad to help.

Regards,
Dess
Telerik by Progress

[Thomas]

Hi Dess,

Thank you for the reply!

I know about the errortext option - In this case I just wanted to clearly notify the user about the allowed colors instead of them having to get the information from the error tooltip info.