public void SetAnchoColumna(int indice, DoubleValue ancho)
        {
            uint Index = (uint)indice;

            Columns cs = _workSheet.GetFirstChild <Columns>();

            if (cs != null)
            {
                IEnumerable <Column> ic = cs.Elements <Column>().Where(r => r.Min == Index).Where(r => r.Max == Index);
                if (ic.Count() > 0)
                {
                    Column c = ic.First();
                    c.Width = ancho;
                }
                else
                {
                    Column c = new Column()
                    {
                        Min = Index, Max = Index, Width = ancho, CustomWidth = true
                    };
                    cs.Append(c);
                }
            }
            else
            {
                cs = new Columns();
                Column c = new Column()
                {
                    Min = Index, Max = Index, Width = ancho, CustomWidth = true
                };
                cs.Append(c);
                _workSheet.InsertAfter(cs, _workSheet.GetFirstChild <SheetFormatProperties>());
            }
        }