Change Parent Row BorderColor when Child Rows are expanded

[christian]

Hi Telerik,

 I use the RowFormatting Event to change the bordel color of the parentrow when childrows are expanded, here's my code :

 

private void GridEmployeRenard_RowFormatting(object sender, Telerik.WinControls.UI.RowFormattingEventArgs e)
       {
           if (e.RowElement.RowInfo.IsExpanded)
           {
               e.RowElement.BorderColor = RowExpandedColor; // RowExpandedColor is set above in the code
           }
           else
           {
               e.RowElement.ResetValue(Telerik.WinControls.UI.LightVisualElement.BorderColorProperty, ValueResetFlags.Local);
           }
       }

However when the row losts focus, the bordercolor is reset.
I need the rowBorderColor keeps the RowExpandedColor value until the row is collapsed by the user.

Any idea to do that please ?

 

Regards.

[Dess | Tech Support Engineer, Principal]

Hello Christian,

Thank you for writing.

I am not sure whether you use the ControlDeafult but note that by default cell elements have applied border as well. In order to apply a row border, it is necessary to hide the cell border. Here is a sample code snippet which result is illustrated on the attached screenshot:

private void radGridView1_RowFormatting(object sender, Telerik.WinControls.UI.RowFormattingEventArgs e)
{
    if (e.RowElement.RowInfo.IsExpanded)
    {
        e.RowElement.DrawBorder = true;
        e.RowElement.BorderColor = Color.Red;
        e.RowElement.BorderGradientStyle = GradientStyles.Solid;
        e.RowElement.BorderWidth = 2;
    }
    else
    {
        e.RowElement.ResetValue(Telerik.WinControls.UI.LightVisualElement.DrawBorderProperty, ValueResetFlags.Local);
        e.RowElement.ResetValue(Telerik.WinControls.UI.LightVisualElement.BorderColorProperty, ValueResetFlags.Local);
        e.RowElement.ResetValue(Telerik.WinControls.UI.LightVisualElement.BorderGradientStyleProperty, ValueResetFlags.Local);
        e.RowElement.ResetValue(Telerik.WinControls.UI.LightVisualElement.BorderWidthProperty, ValueResetFlags.Local);
    }
}

private void radGridView1_CellFormatting(object sender, Telerik.WinControls.UI.CellFormattingEventArgs e)
{
    if (e.Row.IsExpanded)
    {
        e.CellElement.DrawBorder = false;
    }
    else
    {
        e.CellElement.ResetValue(Telerik.WinControls.UI.LightVisualElement.DrawBorderProperty, ValueResetFlags.Local);
    }

    if (e.CellElement.IsCurrent)
    {
        e.CellElement.DrawFill = false;
    }
    else
    {
        e.CellElement.ResetValue(Telerik.WinControls.UI.LightVisualElement.DrawFillProperty, ValueResetFlags.Local);
    }
}

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

 

Regards,
Dess
Telerik

[christian]

Thanks Dess.

Your example works fine.