or
5 answers
523 views
We need your feedback, because we are considering
changes in the release approach for Telerik UI for ASP.NET Core. Please provide
your feedback in the comments section below:
1. Is it hard to understand the version numbers of our releases? If yes, what makes them hard to understand them?
2. Would semantic versioning (SemVer) of our releases make it easier to understand our version numbers and what's behind them?
3. If we go with SemVer, we might need to start with version 3000.0.0 as we currently use 2022.x.x. Please share your thoughts about this approach and ideas for what number versioning would work best for you.
Chris
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answered
on
05 Feb 2024
1 answer
474 views
Hi!
The ListView is breaking my web application, and I cannot make head or tail of the reason:
An unhandled exception occurred while processing the request.
NotSupportedException: "ClientTemplateId or ClientTemplateHandler" cannot be null or empty.
Kendo.Mvc.UI.ListView<T>.VerifySettings()
Also, you demos for the ListView are broken and the browser tab crashed after a while.
I need an urgent fix, as this is affecting the live application.
Aleksandar
Telerik team
answered
on
17 Mar 2023
0 answers
539 views
In our UI for ASP.NET Core R3 2020 (2020.3.915) release, the Column menu message of unsticking a column is "null".
This bug will be resolved in our next official release.
In the meantime, as a workaround, manually set the Unstick Column menu message:
.ColumnMenu(c => c.Messages(m => m.Unstick("Unstick Column")))1 answer
14 views
Kendo Treelist with Column Menu filter, Dropdowns and DatePicker is not showing fully. Its hiding and while scrolling also not working properly
https://netcorerepl.telerik.com/wzOWuMaW50DO1PTf30
1 answer
8 views
Hi Team,
Can we use 2020.1.114.440 kendo MVC dll in .net core application I am using same in .net framework 4.7.2.
Thanks & Regards
Amar Deep
Eyup
Telerik team
answered
on
11 Aug 2025
0 answers
10 views
It was my understanding that the Kendo editor is only designed to work with the content between the <body></body> tags and strip off <html>, <head>, and the <body> tags themselves but while I do see that those tags are indeed left out in the dialog editor a <meta> tag that I have in my <head></head> section is still being rendered (ref attached screenshot) which is not desired to the extent that I wish to re-apply the standard "format" to the saved body content changes that re-applies the standard prefix/suffix tags we use to define HTML formatted email templates (Ref below) where the {0} placeholder would represent the true editor content changes for the email template being posted back from client to be saved. However while this works I'm getting the original <meta> tag as part of the "content" when my expectation is, that because it is embedded in the <head> tag that it would get stripped out when the <body></body> internal content is rendered on the client. I am currently using the 2025.1.227 build of Telerik UI for ASP.NET Core.
private const string EmailTemplateFormat = "<html><head><meta content=\"text/html; charset=windows-1252\" /></head><body style=\"padding: 0; margin: 0;\">{0}</body></html>";
1 answer
12 views
The code below does not hit the read function so the details shows every detail row for each of the outer rows.(There should only be one detail row per outer row) I am following this example here: ASP.NET MVC Grid Detail Template Demo | Telerik UI for ASP.NET MVC which I use basically the same syntax for it and for an unknown reason theirs works and mine doesnt. My Javascript console gives me a 500 error which doesnt provide me with any way to resolve. Ive commented out stuff in the outer grid as I populate in the get method anyway. Can someone please look into this?
Outer grid:
<div id="RelatedAppearances-scheduling" style="margin-right:8px;border:none;padding:0;color:black; padding-bottom: 20px;">
<div id="RelatedAppearancesTopRowInfo" >
<div id="RelatedAppearances-Grid" style="width:99%;">
@Html.Kendo().Grid(Model.RelatedAppearanceList).Name("RelatedAppearancesGrid").Size(ComponentSize.Small).Editable(GridEditMode.PopUp).Resizable(r => r.Columns(true)).ToolBar(r =>
{
r.Create().Text("Add Appearance");
}
).Columns(col => {
col.Bound(c => c.FileNumber).Title("File Number").Width(175);
col.Bound(c => c.CourtDate).Title("Court Date").Width(150);
col.Bound(c => c.CourtTime).Title("Court Time").Width(150);
col.Bound(c => c.Purpose).Width(100);
}).Sortable().DataSource(dataSource => dataSource
.Ajax()
// .Read(r => r.Url("/Appearances/SchedulingInformation?handler=ReadEntity").Data("forgeryToken"))
// .Update(r => r.Url("/Appearances/SchedulingInformation?handler=UpdateEntity").Data("forgeryToken"))
// .Destroy(r => r.Url("/Appearances/SchedulingInformation?handler=DestroyEntity").Data("forgeryToken"))
// .Model(model =>
// {
// model.Id(p => p.AppearanceID);
// })
).ClientDetailTemplateId("RelatedAppearancesDetail");
</div>
</div>
</div>
Javascript detail grid:
<script id="RelatedAppearancesDetail" type="text/kendo-tmpl">
@(Html.Kendo().Grid(Model.RelatedAppearanceList).Name("innergrid_#=AppearanceID#")
.Columns(columns =>
{
columns.Bound(o => o.AppearanceDetails.AppearanceJudge).Title("Judge").Width(80);
columns.Bound(o => o.AppearanceDetails.AppearanceType).Title("Appearance Type").Width(80);
columns.Bound(o => o.AppearanceDetails.Outcome).Title("Outcome").Width(80);
columns.Bound(o => o.AppearanceDetails.ToTH).Title("To T & H").Width(80);
})
.DataSource(dataSource => dataSource
.Ajax()
.Read(read => read.Action("ReadRelatedAppearanceDetail", "Grid", new { AppearanceID = "#=AppearanceID#" })))
.Sortable()
.ToClientTemplate())
</script>
Razor method:
public JsonResult ReadRelatedAppearanceDetail(int AppearanceID, [DataSourceRequest] DataSourceRequest request)
{
var curAppearance = RelatedAppearanceList.Where(a => a.AppearanceID == AppearanceID).FirstOrDefault();
return new JsonResult(new[] { curAppearance }.ToDataSourceResult(request, ModelState));
}
Related Appearance Model:
public class RelatedAppearanceDTO
{
public int AppearanceID { get; set; }
public string FileNumber { get; set; }
public string CourtDate { get; set; }
public string CourtTime { get; set; }
public string Purpose { get; set; }
public string AppearanceType { get; set; }
public string CalendarRemarks { get; set; }
public string Outcome { get; set; }
public string OutcomeComments { get; set; }
public string ToTAndH { get; set; }
public RelatedAppearancesDetailModel AppearanceDetails { get; set; }
}
Related Appearance Detail Model:
public class RelatedAppearancesDetailModel
{
public int AppearanceID { get; set; }
public string AppearanceJudge { get; set; }
public string AppearanceType { get; set;}
public string CalendarRemarks { get; set; }
public string Outcome { get; set; }
public string OutcomeComment { get; set; }
public string ToTH { get; set; }
public string Minutes { get; set; }
public string Disposition { get; set; }
}
Ivaylo
Telerik team
answered
on
05 Aug 2025
1 answer
9 views
Hi, I'm referring to the article below:
In the article Asynchronous Mode Fallback is When Upload which is placed inside a form and configured for asynchronous operation.
I have done this, however after uploading some file (and failed since I didn't implement the controller) the form post still doesn't contain any Files.
Is there a specific to implement a fallback mechanism? a sample will be very helpful.
Ivaylo
Telerik team
answered
on
04 Aug 2025
1 answer
12 views
I have a nullable DateTime property in my view model, and I'm binding it to a DatePicker, with a custom date format like so:
@Html.Kendo().DatePickerFor(model => model.MyNullableDateTimeField).HtmlAttributes(new { @class = "form-control" }).Format("MM/dd/yyyy").ParseFormats("MM/dd/yyyy", "yyyy-MM-dd").DateInput(true)However, it displays like this:
And when I try to submit the form, I get a model validation error: "The value 'month/day/year' is not valid for <my property name>", and it is not possible for me to clear the text from the control at all.
If I input a valid date, it does submit correctly, but I need to be able to have a null value here. I tried
$("#MyNullableDateTimeField").data("kendoDatePicker").value(null) but that did not work. (also tried .val instead of .value)
Also, if there is anyway to have the DatePicker control submit the value in the more standard yyyy-MM-dd format, and just display it in the custom format, I would very much like to know that as well, as it would save me a lot of trouble. I don't understand why it submits a raw string in the "MM/dd/yyyy" format when a standard <input type="date"> will submit in a yyyy-MM-dd format and just display the value in the regular format.
Thanks!
Ivaylo
Telerik team
answered
on
04 Aug 2025
2 answers
9 views
hi, I'm using a combobox like the one below, when the model already has a country assigned, the combobox shows the Id instead of the Name.
At page load I can see that the URL Countries is requested, however this doesn't make a difference.
so the question is, how can I to set the initial value?. I've read examples but they all use a local datasource with bind-to, not a remote datasource. is this possible?
regards
<kendo-combobox for="CountryId" suggest="true"
datatextfield="Name"
datavaluefield="Id" filter="FilterType.Contains">
<datasource server-filtering="true">
<transport>
<read url="@Url.Action("Countries", "Common")"/>
</transport>
</datasource>
</kendo-combobox>
