procedure TRelevancyGrid.AddFileImageToColumn(const AFileExt: string;
ACol: TDataGridImageColumn);
var
lFileExt: string;
lImageIndex: Integer;
begin
lFileExt := FileSys.FileUtils.GetFileExt(AFileExt);
if ACol.Values.IndexOf(lFileExt) = -1 then
begin
lImageIndex := FDocImageListProvider.GetImageIndex(AFileExt);
ACol.Values.Add(SysUtils.UpperCase(lFileExt));
if lFileExt<>'' then
ACol.ImageIndexes.Add('0')/// SysUtils.IntToStr(lImageIndex)