Hello,

I have a ui grid with code to hide the destroy button if only one record left in the grid:

...

columns.Command(command => { command.Destroy().Visible("isLastRecordEmail").Text("Remove"); }).Width(200);

...

                                            function isLastRecordEmail(e) {
                                                return $('\#GridEmails').data('kendoGrid').dataSource.data().length > 1;
                                            }

But if I click the Add button then a new records appears and destroy button will appear for last record to allow to delete the very last record.

My question is, how to hide the destroy button in this case?

I did try to add code:

 function isLastRecordEmail(e) {
      if ($('\#GridEmails').EditIndexes.Count > 0) return false;

but EditIndexes is undefined.

Could you please help?

Thanks!

CostCenterController:

public ActionResult CostCenters_Read([DataSourceRequest] DataSourceRequest request)         {             return Json(ccService.Read().ToDataSourceResult(request));         }         [AcceptVerbs(HttpVerbs.Post)]         

public ActionResult CostCenters_Create([DataSourceRequest] DataSourceRequest request, CostCenterViewModel cc)         {             if (cc != null && ModelState.IsValid)             {                 ccService.Create(cc);             }             //return Json(cc, JsonRequestBehavior.AllowGet);             return Json(new[] { cc }.ToDataSourceResult(request, ModelState));         }         [AcceptVerbs(HttpVerbs.Post)]         

public ActionResult CostCenters_Update([DataSourceRequest] DataSourceRequest request, CostCenterViewModel cc)         {             if (cc != null && ModelState.IsValid)             {                 ccService.Update(cc);             }             return Json(new[] { cc }.ToDataSourceResult(request, ModelState));         }

Index.cshtml:

@(Html.Kendo().Grid<Main.Models.Quality.CostCenterViewModel>()                            

                                   .Name("CostCenter")                            

                                   .Columns(columns =>                            

                                    {columns.Bound(c => c.CostCenterID);                                

                                     columns.Bound(c => c.CC).Width(140);                                

                                     columns.Bound(c => c.Rate).Width(140);                                

                                     columns.Bound(c => c.Date).Width(100);                                

                                     columns.Command(command => command.Destroy()).Width(110);                            

                                     })                            

                                    .ToolBar(toolbar => toolbar.Create())                             

                                    .Editable(editable => editable.Mode(GridEditMode.PopUp))                            

                                    .Pageable()                            

                                    .Sortable()                            

                                     .Scrollable()                            

                                     .HtmlAttributes(new { style = "height:550px;" })                            

                                     .DataSource(dataSource => dataSource                            

                                     .Ajax()                            

                                     .PageSize(20)                            

                                     .Events(events => events.Error("error_handler"))                            

                                     .Model(model => model.Id(c => c.CostCenterID))                            .Create(update => update.Action("CostCenters_Create", "CostCenter"))                            .Read(read => read.Action("CostCenters_Read", "CostCenter"))                            .Update(update => update.Action("CostCenters_Update", "CostCenter"))                            .Destroy(update => update.Action("CostCenters_Destroy", "CostCenter"))                            

                            ))               

                            <script type="text/javascript">                    

                                   function error_handler(e) {                       

                                           if (e.errors) {                            

                                           var message = "Errors:\n";                            

                                      $.each(e.errors, function (key, value) {                                

                                           if ('errors' in value) {                                    

                                      $.each(value.errors, function () {                                     

                                       message += this + "\n";                                   

                                       });                                

                                     }                            

                                  });                            

                                 alert(message);  }                    

                                   }                

                                  </script>

I set CostCenterServer, the code is similar as ProductService.

It show up as normal, but when I Click "New Record", It popped up error with "This request has been blocked because sensitive information could be disclosed to third party web sites when this is used in a GET request. To allow GET requests, set JsonRequestBehavior to AllowGet."

In Controller, i tried to replace return Json(cc, JsonRequestBehavior.AllowGet); with return Json(new[] { cc }.ToDataSourceResult(request, ModelState)); but no lucky??

Hello,

What is the best practice to use Kendo UI grid with "long run" server side data source? I have a web page with two tabs. The grid in on second page. The data downloaded on login process and average time is about 20-30 seconds, that's not good. If I create remote data source then opening the second tab is taking 20 seconds to display the grid content.If I choose the first tab and then return the second tab then the grid takes 20 seconds again.

The amount of records in the data source is 0-5. The problem is that SQL code has to check too many things (and controller accessing another web site) and cannot be optimized.

Should I go with web workers? In this case the data could be downloaded when the first tab is displaying. Or might be exist another solution? Or something already in grid functionality that I have missed? What is the best practice for such case?

Thanks!

I have two applications which both manage hierarchies using treeviews, allowing dragging and dropping of items into a hierarchy tree.

Sample1.jpg shows the working application, whilst Sample2.jpg shows the problem one.

They both work, but on one, the treeview correctly displays the lines to indicate where an item will be dropped, whilst in the other, the line is not shown apart from a tiny dot.  I've compared the two applications, and switched out the bootstrap themes and styles, and cannot identify the issue. In the DOM explorer, the treeview styles look the same.

The malfunctioning application is using version 2019.1.220 of the framework.

Any help to fix this issue would be appreciated.

Thanks

Hai. So, I have view and I loaded column chart on this view like partial view(chart diagram). And I have a little problem, I can't to send data from controller. I need to load data after sorting data. I send service id and after that, loading chart with data only for this service.
Load main view => send data in controller with service id => in contoller do query for database => load data in partial chart view => display partial view chart data in main view

I installed the telerik extensions and used it to create a new "Telerik MVC" project.  Compiling warns about dll conflicts and if you run the base project it errors with a similar error.

Should I assume Telerik is not quite stable with studio 2019?

HI all  I'm Kind of new to Grids  

i want to build an grid  which looks kind of this 

Grid Title | Column Title  | Column Title | 

row  Title | Value             | Value            |

row  Title | Value             | Value            |

row  Title | Value             | Value            |

The "title" fields should not get a static content so they should not be retrieved from the database,

the "value" fields should be "dynamic" and get their content from a database. 

Now my question : how do I create these "static" fields? 

So we recently updated our version of kendo to 2015.2.805.

The error ("Uncaught TypeError: Cannot read property 'value' of undefined") is caused by line 3 of the following JavaScript ("multiselect" on line 1 is undefined):

Initialization code:

When testing this code on a previous version of the application, the feature works. However, since that version we have updated kendo, as well as the references to kendo (in _Layout.cshtml).

Could this maybe be a reference issue?

Regardless of whether we add or remove kendo.web.min.js, the problem persists.

We are referencing the following files, all of these files return an OK result:

Would someone be able to offer any suggestions on how to display TreeView with certain node paths already expanded based on a "expandFolder" boolean attribute that is returned in the Remote_Data_Binding controller?

I'm using code similar to the below example with an additional "expandFolder" boolean attribute on the database.
https://demos.telerik.com/aspnet-mvc/treeview/remote-data-binding

Additionally, when a user clicks a node, the tree needs to fully expand any child nodes whose "expandFolder" is true.

I saw some posts about an "expand: true" setting topic but couldn't figure out how to use that approach with the LoadOnDemand treeview pulling from remote data binding.  I also saw some uses with expandPath.  However, I was hoping there's a way to use the existing node data without having to re-traverse the entire tree since I already set the expandFolder in the Controller?

Thanks in advance for any help,

Gil