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UI for ASP.NET Core Forum
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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
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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
413 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")))
Kendo UI
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 asked on 16 Sep 2020
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We are trying to implement the Kendo grid to replace our previous framework tool (c1).

Now I am stuck on creating a particular grid. The grid has a group header over 2 columns. In a row, the data of a property is represented as a cell (span) over 2 columns. Below this span are 2 properties in their own cell. This almost succeeds me with a ClientTemplate. However, I do not know how to use the properties from the row data.
When the group header is clicked the first propery sorts. The headers of 2 other columns sort their own property (column). 
In the picture, "naam" is the groups head. "Adres" and "Plaats" are the subcolumns.

How can I make this with the Kendo grid? I am mainly concerned with sorting the data behind the group header.

info
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 asked on 28 Mar 2024
1 answer
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I have a grid whose first column is a string column, and the 2nd and 3rd columns are sometimes dropdowns based on the value shown in the first column.

I have it mostly working except for a small issue. If I click slowly enough it seems to work but if i click around the different cells eventually my dropdown appears in a cell that it should not. What is the correct way to implement the described behavior?

Should I be looking for a cell template solution? Or do I need to subscribe to a custom grid event?

Any advice would be much appreciated.

 

Frank
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 answered on 25 Mar 2024
1 answer
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Below code needs to be corrected for ASP.NET Core Grid Popup Editing : 

https://demos.telerik.com/aspnet-core/grid/editing-popup?autoRun=true&theme=default-main-dark

.DataSource(dataSource => dataSource .Ajax() .PageSize(20) .Events(events => events.Error("error_handler")) .Model(model => model.Id(p => p.ProductID)) .Create(update => update.Action("EditingPopup_Create", "Grid")) .Read(read => read.Action("EditingPopup_Read", "Grid")) .Update(update => update.Action("EditingPopup_Update", "Grid")) .Destroy(update => update.Action("EditingPopup_Destroy", "Grid"))

 

It seems create arrow function is called for update & destroy as well.

while editing the row data EditingPopup_Create create is called instead of update !!

Anton Mironov
Telerik team
 answered on 25 Mar 2024
1 answer
7 views

This is probably just a request for a pointer to the documentation for older versions, which I couldn't find.  But the problem that I'm trying to solve is:

I'm trying to update some older software that uses Telerik.Web.UI 2015.2.826.45.  I'd like to add a client-side event handler that fires whenever the value of a RadComboBox is changed, whether by the user, or by server-side code.  The current doco quite clearly states that I want to use add_selectedIndexChanged, with the eventArgs parameter which is passed to that event containing the new selected item.  That function doesn't seem to exist in the version I'm using.  I tried adding a handler via the OnClientSelectedIndexChanged attribute of the ASPX element, and it handles an event when the user makes a change, but not when the server does.  And the arguments are in a completely different form.  Any idea how I do something equivalent in the older version?  Or where to find documentation that would apply to that version?

 

Thanks for any help

 

Rumen
Telerik team
 answered on 22 Mar 2024
1 answer
16 views

Hello Telerik,

I am using the Kendo Upload Control with Async AutoUpload set to "true".  In version 2023.3.1114, when using "Select File" to upload a document the control works perfectly.  Dragging and dropping a file onto the control also works perfectly. 

After upgrading to 2024.1.130 using "Select File" to upload a document does not work, but dragging and dropping a file does work to upload a document.

Can you please advise me as to what I am doing wrong.  I am using jQuery v3.7.0.

My client side code looks like the following:
@(Html.Kendo().Upload()
		.Name("uplCtrl")
		.HtmlAttributes(new { aria_label = "files", title = "Select file to upload" })
		.Multiple(false)
		.Messages(m => m.Select("Select file...")
		.DropFilesHere("Drop file here to upload"))
		.ShowFileList(false)
		.Async(a => a
			.Save("UploadSave", "Vendors")
			.AutoUpload(true)                                        
		)
		.Validation(validation =>
		{
			validation.AllowedExtensions(new string[] { "pdf", "docx", "xlsx", "zip" });
			validation.MaxFileSize(52428800);
		})
		.Events(e => e
			.Error("onUploadError")
			.Complete("onUploadSuccess")
			.Upload("onUpload")
		)
	)

Ivan Danchev
Telerik team
 answered on 21 Mar 2024
0 answers
10 views

Hello ,

We use the method ToDataSourceResult ( Telerik UI  for Asp.net Core 2024.1) and EF Core (8.0) to perform a simple query on a table. The primary key of the table is a String type and is case-sensitive. There are two pieces of data in our database. Their primary key values only differ in case.

ID: DEHE061800005DTF, Name: First

ID: DEHE061800005DTf, Name: Second

When we filter based on the primary key, we always get two pieces of data, but they are actually the same piece of data. In other words, another piece of data was not returned. Such as:

ID: DEHE061800005DTF, Name: First

ID: DEHE061800005DTF, Name: First

It seems that some kind of operation is performed internally according to the primary key, but because the case is not taken into account, the same piece of data is used twice.

We wanted to know if we could somehow solve this problem.

Thanks!

Lei
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 asked on 20 Mar 2024
0 answers
11 views

I am working on a Net Core Mvc application for which I succesfully used Telerik UI. Everything was working fine, but after I added Mvc Areas and moved the views and controllers etc, the Telerik components stopped working.

I have found similar problems searching Google and the Telerik forum. For example:
https://www.telerik.com/forums/cannot-use-kendo-within-areas

However, that solution it not for ASP.NET Core. I was wondering what I have to do to make sure Telerik will work again in my Mvc Areas.

I am using the CDN to include the Kendo files.

<script src="https://code.jquery.com/jquery-3.7.0.min.js"></script>
<script src="https://kendo.cdn.telerik.com/2023.3.1114/js/kendo.all.min.js"></script>
<script src="https://kendo.cdn.telerik.com/2023.3.1114/js/kendo.aspnetmvc.min.js"></script>
<script src="~/js/kendo-ui-license.js"></script>

<script src="~/vendor/kendo/kendo.culture.nl-NL.min.js"></script>
<script src="~/vendor/kendo/kendo.messages.nl-NL.min.js"></script>
<script type="text/javascript">
    kendo.culture("nl-NL");
</script>
Any help is appreciated.
Jim
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Iron
 updated question on 19 Mar 2024
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