/// <summary>
/// Populate the data table from DataSource.
/// </summary>
void FillContent()
{
    /*omitted
    ...
    */
    Table _table;

    var r = this._table.AddRow();
    int index = 0;

    foreach()
    {
        using (var webClient = new WebClient())
        {
            byte[] imageBytes = webClient.DownloadData(_baseUrl + value.ToString());
            string imageFilename = MigraDocFilenameFromByteArray(imageBytes);

            if(!string.IsNullOrEmpty(imageFilename))
            {
                var image = r.Cells[index].AddParagraph().AddImage(imageFilename);
                image.Height = "0.7cm";
                image.Width = "1.5cm";
                image.LockAspectRatio = true;
                image.RelativeVertical = RelativeVertical.Line;
                image.RelativeHorizontal = RelativeHorizontal.Margin;
                image.Top = ShapePosition.Top;
                image.Left = ShapePosition.Left;
                image.WrapFormat.Style = WrapStyle.Through;
            }
            _table.SetEdge(0, _table.Rows.Count - 2, _dataFields.Count, 2, Edge.Box, BorderStyle.Single, 0.75);
        }   
        index++;
    }

    /*omitted
    ...
    */
}

static string MigraDocFilenameFromByteArray(byte[] image)
{
    return "base64:" +
            Convert.ToBase64String(image);
}