Can you tell me how to auto-size my first "icon-template" column's Width?  I have it set to a hard 125 but if I have a deeper hierarchy I'd like it to accommodate.  Also, I've found when I have no other columns that even the 125 width doesn't seem to stick.

I've posted my TreeList definition many times in this forum but here it is again:

Is there a way to add a placeholder for the filter input box?  I have Select Location as my main placeholder but when the user opens the tree I would like the placeholder in the search box to be "Search by city...".

Thanks,
Bill

I get the following error constantly when attempting to use the TreeLIst.  I'm using the Google Chrome browser and hitting the F12 button to expose the errors.  At the very least, please wrap the error so it doesn't go uncaught.  Best case would be to throw a useful error message a developer could work around.

Logging.ts:203 AI: CannotSerializeObjectNonSerializable message:"Attempting to serialize an object which does not implement ISerializable" props:"{name:baseData}"

My TreeList:

trying to implement this demo in our .net core project targeting core 2.1. taking one step at a time - 

I have modeled my view models based on your examples and my controller after your datasource controller - i don't use services

At this point I am able to bind and return data from our database. The spreadsheet is fine at this point and all I am trying to do now is get the data into the 

Controller submit method.

i have set up my ajax call as you have in the 2018 R2 release examples - for saving changes

    function onSubmit(e) {

         $.ajax({
             type: "POST",
             url: '@Url.Action("Data_Source_Products_Submit", "Spreadsheet")',
             data: e.data,
             dataType: "json",
             success: function (result) {
                 e.success(result.Updated, "update");
                 e.success(result.Created, "create");
                 e.success(result.Destroyed, "destroy");
             },
             error: function (xhr, httpStatusMessage, customErrorMessage) {
                 alert(xhr.responseText);
             }
         });
     }

When I hit Save and debug , I can see that the data is there in the updated array (the other 2 are empty)

however when i got to the controller - the ModelState was inValid

if I add the contentType: "application/json", then  ModelState will be valid but the input model updated parameter is null

just the fact that i need to add the content type to the ajax call tells me there is something fundamentally different between your core project and mine

your project has so many pieces I cannot easily if i am missing something simple or something big

Do you have any idea why i am needing to add the content type to get the ModelState valid?

And why the Updated array is null in the controller when I can see the data in the array on the client side?

thanks

Jim

Hi there,

I have a grid with an Excel Export option. here's how I decorate the Grid component.

                              .Excel(excel => excel
                                    .AllPages()
                                    .FileName(@excelFilename)
                                    .Filterable(true)
                                    .ProxyURL(Url.Action("ExcelExportSave", "Search"))
                                    .ForceProxy()
                                )

And then, in the controller I do this:

        [HttpPost]

        public ActionResult ExcelExportSave(string contentType, string base64, string fileName)
        {
            var fileContents = Convert.FromBase64String(base64);

            return File(fileContents, contentType, fileName);
        }

However, some of the queries return over a million rows. This causes the download to stall.Is there any way to export CSV or maybe just stream the contents down in chunks?

Hello,

I have been trying to figure out how to implement the "validation bubble" (see attached) like the one that is displayed in the following example: Custom validator editing

My validation messages appear either on the side of the input field, or they push everything down and display below the input field, or they show up on top of the input field where the input field is no longer visible.  I'd really like to know how to show a bubble with the small arrow above it just like in the attached picture.  I'm not sure if this is done via a theme, but the theme I'm working with doesn't seem to have this functionality.  An example would be very much appreciated.  Thanks.

Regards,

Shawn A.

Hi,

I'm trying to test out the Grid control and it will not display on my page. If I do view/source, I can see it actually.

Steps I took:

1. Installed NuGet package: Telerik.UI.forAspNet.Core.Trial

2. Updated Startup.cs with entries for json, AddKeno()

3. Updated Views/_ViewImports to include Kendo.Mvc.UI and the tag Helper

4. Added the div below to my page (I have a controller named LineItemsController with a JsonResult function named GetLineItems)
<div class="col-md-12">
        @(Html.Kendo().Grid<LineItem>()
                                .Name("BidGrid")
                                .Columns(columns =>
                                {
                                    columns.Bound(li => li.AvailableQty).Filterable(false);
                                    columns.Bound(li => li.Category);
                                    columns.Bound(li => li.Description);
                                    columns.Bound(li => li.InstalledUnitCost);
                                    columns.Bound(li => li.MaterialCost);
                                })
                                .Pageable()
                                .Sortable()
                                .Scrollable()
                                .Filterable()                               
                                .HtmlAttributes(new { style = "height:550px;" })
                                .DataSource(dataSource => dataSource
                                    .Ajax()
                                    .PageSize(20)
                                    .Read(read => read.Action("GetLineItems","LineItems"))
                                )
        )
    </div>

Is there anyway to use Kendo for asp.net core with Bootstrap 4 without polluting the default Bootstrap 4 styling? Is it possible to prefix all Kendo styles to not interfere with Bootstrap?

Lack of customization within the SAAS builder is making it very hard to implement Kendo UI.  At this point if we could just get Charts that would be a start.

Is there a list of styles overridden by Kendo?

I've got a grid with column group headers that display the day of week and under each column group are the actual value columns. I want the column group to display the preset value of "Mon", "Tue", etc. but also after show the date. So the final column group header would read "Mon MM/dd/yyyy". I have the date I need to rename the column group header at run-time. How do I go about coding this?

I tried the below but it only renames the value column header and not the group.

This is my code for the group "Mon".

Hi,

Sorry for a daft question. I am using VS2019, ASP.net Core 2.2, UI for ASP.net Core 2019.1.220. I am trying to bind a site map to the menu as I need security trimming, either using the Html helper or the tag helper. The issue is I am trying to follow  this page: https://docs.telerik.com/aspnet-core/html-helpers/navigation/menu/binding/sitemap-binding 

For the life of me I cannot find a reference SiteMapManager (Step 3) anywhere, have been Googling my fingers to the bone and still can't find anything! Also The example shows the call to populate in a controller, seems an odd place to put it or is the idea that the menu is only populated for example on the first call to the Home Index ?

Thanks

Chris