I've been trying to track down a performance issue we are seeing with the kendo grid when using client side binding with virtualization turned on.  After much trial and error I have found the cause to be one simple css style. When applied the grid dies. My findings are in Chrome and I have not tested any other browser.

Plunker:  http://plnkr.co/edit/EDFS3Z?p=preview

This shows the grid capable of loading 1700 odd rows fine, it can sort and filter with good performance due to the option of scrollable: { virtual: true } and pageSize: 50.

When you un-comment the line /*border-bottom: 1px solid #c5c5c5;*/  in the index.html file you will see the problem, the plunker may not respond or it will and the grid will be extremely slow.
We has this line in our theme and it was killing our grids, when you turn virtualization off it works but then we have other performance issues.

Anyone else seen this?  very hard bug to find :o

Hello,

I am using a kendo draggable over a grid so i can reorder the rows.
The code is similar to the following:


Problem is, that inside the grid i have a column with textboxes and the focus for this has stopped working. Is there any way i could fix this?

Thank you,
Cosmin

Hi everybody,

I'm very stucked for a very simple thing, I cannot remove the line of the bottom of the drawer in my app (The one hilight yellow).

Is anybody as any idea? I try everything, remove css, add css, nothing works... It drives me crazy :/

Thank you very much for your help.

hi,
i want validate my dropdown list, just i want to check the dropdown have any value..
please give a solution
my code is
<form method="post" action="/UploadAthletes/UploadReturn" name="second" id="second" enctype="multipart/form-data">
                                <div id="crt">
                                    <label for="Coach" class="col-lg-4 col-sm-5 col-xs-11">Select Coach</label>
                                    <span class="k-invalid-msg" data-for="name"></span>
                                    <ul>
                                        <li style="padding-left:10px;" class=" col-lg-4 col-sm-5 col-xs-11">
                                            @(Html.Kendo().DropDownList()
                                      .Name("sp")
                                      .HtmlAttributes(new { style = "width:100%" })
                                      .OptionLabel("Select Coach...")
                                                      .DataTextField("CoachName")
                                                      .DataValueField("CoachID")
                                      .DataSource(source =>
                                      {
                                          source.Read(read =>
                                          {
                                              read.Action("GetCoach", "UploadAthletes");
                                          });
                                      })
                                            )
                                        </li>
                                    </ul>
                                </div>

Hello,

I'm using a kendo mobile drawer on both sides of our Phonegap mobile app.  I recently updated to 2014.1.321 and also 2014.1.328 .  I'm now seeing an issue with the right drawer.  When I open any UI view from the right drawer, it should open the view in middle screen.  This worked fine before the latest internal builds.  What I'm seeing now is it opens the view in the right drawer.

Is this a bug, or has the api maybe changed?

  Nick

Hello,
I'm trying to bind a grid to the Model's property in the Popup Edit template. I need to attach some events to the grid, but it requires an object to do so. I can't find a way to bind an observable to the grid definition from the Model.

Here's the class Definition:
public class PopupBind
        {
            public PopupBind()
            {
                this.PopupBind1= new List<PopupBind1>();
            }

            public int primaryKey{ get; set; }
            public string bindData{ get; set; }
            public virtual IEnumerable<PopupBind1> PopupBind1{ get; set; }
        }

public class PopupBind1
        {
            public int primaryKey{ get; set; }
            public string Name{ get; set; }
            public string Value{ get; set; }
        }

Grid Defintion
@(Html.Kendo().Grid<PopupBind>()
      .Name("bound")
      .Columns(columns =>
      {
          columns.Bound(ad => ad.bindData).Title("Name");
          columns.Bound(ad => ad.PopupBind1).ClientTemplate("# if( typeof PopupBind1!= 'undefined' ) { #" +
                                                                   "# PopupBind1.forEach(function(element, index, array){ #" +
                                                                   "<div>"+
                                                                   "#= element.Name# (#=element.Value# %)" +
                                                                   "</div>" +
                                                                   "# }) } #").Title("Bind1");
        
          columns.Command(command =>
          {
              command.Edit();
          });
      })
      .Editable(editable =>
      {
          editable.Mode(GridEditMode.PopUp).TemplateName("EditPopupBind");
          editable.Window(window => window.Width(600));
      })
      .ToolBar(toolbar => toolbar.Create())
      .DataSource(dataSource => dataSource.Ajax()
          .Batch(true)
          .Model(model =>
          {
              model.Id(ad => ad.primaryKey);
              model.Field(ad => ad.PopupBind1).Editable(false).DefaultValue(new Collection<PopupBind1>());
          })
          .Read("GetPopupBind", "popup")
          .Update("UpdatePopupBind", "popup")
          .Create("CreatePopupBind", "popup")
      ))


EditPopupBind.cshtml
@model PopupBind

<fieldset>
        <legend>PopupBind</legend>

         <div id = "PopupBind1Details" data-role="grid" 
         data-editable='[
         {
            "confirmDelete":
                "Delete",
            "cancelDelete": "Cancel",
            "mode": "incell",
            "template": null,
            "create": true,
            "update": true,
            "destroy":true
        }]'
         data-bind = "source: PopupBind1" 
         data-columns='[
        { field : "Name", title: "Name" },
        { field : "Value", width: 120, title : "Value" },
        { "command":[{
                "name": "destroy",
                "buttonType": "ImageAndText",
                "text":"Delete"
            }]
            }]'/>
</fieldset>

Description for PopupBind1Details
What I need to do is
1. Make Name field non-editable.
2. Attach Destoy, Edit and Add handlers, and if possible pass the updates done to the Value field to UpdatePopupBind. 

Is this achievable?

When I try to initialize a mobile listview with virtual scrolling before I navigate to the parent data-view, I'm getting this error :

"03-31 22:56:56.872: E/Web Console(31538): Uncaught TypeError: Cannot call method 'makeVirtual' of null:46"

Here's my code:

lstJobs = $("#lstJobs").kendoMobileListView({
           dataSource: JobDataSource,
           template: $("#lstJobTemplate").html(),
           endlessScroll: true,
           virtualViewSize: 100 }).data("kendoMobileListView");

If I use serverPaging = true, pageSize=100 in the datasource for pre binding I don't get this error, but then performance is poor on some devices.

My use-case is that I have 3 different views with listviews on them, and I want them to load very quickly the first time the user accesses them.  So what I'm trying to do is pre-bind the listviews when the user first logs in, before they navigate to those screens.

Any ideas on this?

  Nick

Hello,

I upgraded Kendo from 2013.1.514 to 2014.1.318 and all of the gradients have been removed from my charts.  I am using the bootstrap theme.  What must be done to restore the gradient 3-D effect?

I badly need to remove or disable the HScrollBar in Tree View.  I've seen answers for radTreeView, but nothing for UI TreeView.   Please, I need to disable this asap

Hi,

I am using the scheduler in Kendo Mobile, referencing the demo.

I set the initial parameters in the init view function and change the dataSource and use the date() function to change the date of the scheduler.
However, I would also like to change the startTime and resources so that more changes can be determined later.

Would you suggest how to change them?

Thanks!