@(Html.EJ().Grid<object>("DataGrid")  
                                              .Datasource(ds => ds.Json(ViewData["iData"]))                                                                                 
                                              .AllowSorting()
                                              .AllowResizeToFit()
                                              .Locale("ru-RU")
                                               .FilterSettings(filter => { filter.FilterType(FilterType.Excel); })
                                               .Columns(col =>
                                              {                                                                                
                                                     col.Field("ID").Visible(false).Add();                                                                                  
                                                     col.Field("Owner").Visible(false).Add();                                                                                  
                                                     col.Field("ImageData").HeaderText("Изображение").Width(400).Add();                                                                                  
                                                     col.Field("Comment").HeaderText("Примечание").Width(200).Add();
                                                })
                                               .GridLines(GridLines.Both)
                                               .ClientSideEvents(eve => eve.QueryCellInfo("queryCellInfo"))
              )

<script>
    function queryCellInfo(args) {
        if (args.column.field === "ImageData") {
            args.cell.setAttribute('aria-label', 'image')
            args.cell.innerText = '';
            var img = new Image();
            var base64 = args.data.ImageData;
            img.src = base64;
            args.cell.appendChild(img);
        }
    } 

</script>