Grid + Checkbox + Agregates

[Jose]

Hi everyone!

i have a little problem, i made a kendo ui grid, and i added a Columns Template (checkbox), and agregates function, sum and avarage, it works perfectly.

but i wanna do the fallowing: the user will enable some checkbox , the grid has to refresh , i mean the agregate needs to recalculate again, when the user selects checkboxes.

so, i have 3 rows A , B , C. by default all are selected and agregate are calculated, but it happends that the user removes B, so the grid needs to recalculate de "sum" and "avarage" again for A and C.

this is my code so far: i wanna basicly wanna refresh my agregates with help of a checkbox.  im using Kend ui with razor. any help will be super appriciate!


 @(Html.Kendo().Grid(Model)
                 .Name("Grid")
        
                 .Navigatable()
                 .Columns(columns =>
                              {
                                  columns.Template(@<text>
                                                        <input name="LstModelSel" type="checkbox" title="LstModelSel"  onclick="Refresh(@item.TotalOutstanding)" value="@item.ExposureNummer"
                     
                                                            @if (Model.Any(p => p.ExposureNummer == item.ExposureNummer))
                                                            {
                                                                @("checked=checked")
                                                            }
                        
                                                            />
                                                    </text>)
                                      .HeaderTemplate(@<text>
                                                           <input id="LstModelSel" type="checkbox"   title="LstModelSel"
                          
                                                               @if (Model.Any())
                                                               {
                                                                   @("checked=checked")
                                                               }
                                                               onclick="return LstModelSel_onclick()" />
                                                       </text>)
                                      .Width(50)
                                      .HtmlAttributes(new { style = "text-align:center" })
                                      .HeaderHtmlAttributes(new { style = "text-align:center" });

                                  columns.Bound(p => p.ExposureNummer);

                                  columns.Bound(p => p.GroupNummer);
                                  columns.Bound(p => p.Name);
                                  columns.Bound(p => p.TypeofLoan);
                                  columns.Bound(p => p.TotalLimit);
                                  columns.Bound(p => p.TotalOutstanding).GroupFooterTemplate((@<text>  <div> Total: @item.Sum  </div>   <div> Average: @item.Average   </div>    </text>));


                                  columns.Bound(p => p.ArpovalDate);
                                  columns.Bound(p => p.Status);
                                  columns.Bound(p => p.Rating);
                                  columns.Bound(p => p.EL);
                                  columns.Bound(p => p.LostProvision).GroupFooterTemplate((@<text>  <div> Total: @item.Sum  </div>   <div> Average: @item.Average   </div>    </text>));

                              })
                 .Pageable()
                //.Events(e => e.DataBound("Refresh()"))
                                    

                 .DataSource(dataSource => dataSource
                                               .Server()
                                               .PageSize(20)

                                               .Aggregates(ListModel =>
                                                               {

                                                                   ListModel.Add(p => p.TotalOutstanding).Average();
                                                                   ListModel.Add(p => p.TotalOutstanding).Sum();
                                                                   ListModel.Add(p => p.LostProvision).Average();
                                                                   ListModel.Add(p => p.LostProvision).Sum();

                                                               })
                                               .Group(groups => groups.Add(p => p.ExposureNummer)
                                               )/*Agregates*/))
  }  
   
 
}


<script type="text/javascript">
    $(document).ready(function () {
        $('#LstModelSel').click(function () {
            $("#Grid tbody input:checkbox").attr("checked", this.checked);
        });
    });

    function Refresh(V) {
        var sum = 0;
        var val = V;
    
        
        document.getElementById('re').value = val;
    }



    function LstModelSel_onclick() {

    }

</script>

[Jose]

when i mean "remove" B i mean "uncheck row B"