Get group column in ViewCellFormatting event

[Christoph]

Hello,

i use the ViewCellFormatting event to set an icon in the group header. It works, but how can i determining the group if i have more than one grouped column (something like the SummaryItem in the GroupSummaryEvaluationEventArgs).

Here my event handler for th ViewCellFormattingEvent:

private void OnGridViewCellFormatting(object sender, CellFormattingEventArgs e)
{
  //Need the group here
  GridCellElement gce = e.CellElement;
  if (gce is GridGroupContentCellElement)
  {
    GridData gd = GetGridData(e); //Get the needed data

    gce.DrawFill = true;
    gce.GradientStyle = Telerik.WinControls.GradientStyles.Solid;
    gce.BackColor = SystemColors.ControlLight;
    gce.Image = gd == null ? null : gd.Point.Marker ? _okImage : _nokImage;
  }
}

Thank you

Christoph

[Hristo]

Hi Christoph,

Thank you for writing.

You can access the group through the GridViewRowInfo object. Please check my code snippet below: 

private void radGridView1_ViewCellFormatting(object sender, CellFormattingEventArgs e)
{
    GridGroupContentCellElement cell = e.CellElement as GridGroupContentCellElement;
    if (cell != null)
    {
        int level = cell.RowInfo.Group.Level;
    }
}

I hope this helps. Should you have further questions please do not hesitate to write back.

Regards,
Hristo Merdjanov
Telerik by Progress

[Christoph]

HelloHristo,

that will work for me because i used grouping by code. But only for my interest: what is the easiest way to get the grouped column to the level (if the user can grouping)?

Thanks

Christoph

[Hristo]

Hi Christoph,

Thank you for writing back.

The ViewCellFormatting will be raised as soon as a GridGroupContentCellElement becomes visible. By handling the GroupSummaryEvaluate you can also retrieve the group and its level: 

private void radGridView1_GroupSummaryEvaluate(object sender, GroupSummaryEvaluationEventArgs e)
{
    int level = e.Group.Level;
}

Additionally, you can check the following topics in our documentation: 

• http://docs.telerik.com/devtools/winforms/gridview/grouping/formatting-group-header-row
• http://docs.telerik.com/devtools/winforms/gridview/grouping/groups-collection
  

I hope this information was useful. Please let me know if you need further assistance.

Regards,
Hristo Merdjanov
Telerik by Progress

[Christoph]

Thanks for your support

Christoph