### Bug report

The CheckBox TagHelper does not render the attribute "required" and a custom class.

### Reproduction of the problem

The CheckBox TagHelper definition:

<kendo-checkbox id="KendoCheckboxRequiredByHtml" class="form-check-input" required>
</kendo-checkbox>

It generates the following markup:

<input id="KendoCheckboxRequiredByHtml" name="KendoCheckboxRequiredByHtml" type="checkbox" value="true" data-role="checkbox" class="k-checkbox k-checkbox-md k-rounded-md">
<input name="KendoCheckboxRequiredByHtml" type="hidden" value="false">

A sample for reproduction is attached.

### Expected/desired behavior

The attribute "required" and the class "form-check-input" to be set to the generated input element.

### Environment

* **Kendo UI version: 2022.2.510
* **Browser: [all]

Bug report

On mobile device's the TimePicker and DateTimePicker's popup doesn't get scrolled as expected. Instead the entire page is scrolled.

Reproduction of the problem

1. Run the DateTimePicker or TimePicker Demo on a mobile device (test on Safari/Chrome)
2. Open the popup and try to scroll

Current behavior

The page gets scrolled.

Expected/desired behavior

The popup should be scrollable.

TicketID:

1570836

Environment

• Kendo UI version: 2022.6.621
• Browser: [ Mobile Chrome | iOS XX Safari ]

It would be useful to have a grid operator for "IN" conditions. Right now we only have 2 options for an OR without having to use a custom filtering and custom clearing functions.

We have a lot of data that needs to be filtered that is not sequential.  For example purposes:

Given that a customer has a standing purchase order for parts over time.

Given that serial numbers on said parts will not be sequential and may not be even be similar enough for wildcards (if that feature is provided.)

Given that we need to filter grid data to retrieve customer number, purchase order and a set of serial numbers, we need the equivalent of:

SELECT * FROM testdatatable WHERE customer = '#####' AND purchaseorder = '#####' AND serialnumber IN ('abciqwe', 'cid235', 'sn34087', 'hpk2679');

which would be WHERE WHERE customer = '#####' AND purchaseorder = '#####' AND (serialnumber  = 'abciqwe' OR serialnumber =  'cid235' OR serialnumber = 'sn34087' OR serialnumber 'hpk2679');

So basically I would like to have the ability to have multiple OR statements and the operand could be 'contains' or 'not contains' as that would probably work better than "equal".

Our immediate need is for the MaskedTextBox.

And have modified my program.cs to add:

// Add services to the container.

builder.Services.AddControllersWithViews()

                // Maintain property names during serialization. See:

                // https://github.com/aspnet/Announcements/issues/194

                .AddNewtonsoftJson(options => options.SerializerSettings.ContractResolver = new Newtonsoft.Json.Serialization.DefaultContractResolver());

// Add Kendo UI services to the services container"

builder.Services.AddKendo();

I copied the code from your demo into the ASP.net 6.0 Page above.

I added data properties to the Index.cshtml.cs model and changed the Value property on each Kendo object to point them. That works fine

The issue is that the formatting is not applied:

Kendo dialog structure doesn’t use Aria landmarks properly for buttons  - this leads to a validation error

The pager control's select box renders role="listitem" but the parent is missing role="list"  - this leads to a validation error

Listviews will render role="list" even when empty - this leads to a validation error

Kendo grids use 2 tables (one for header and one for the data) which means that there are no role="cell" assigned to any of the headers  - this leads to a validation error

Scrollable grids are missing a tabindex="0" to allow for keyboard navigation - this leads to a validation error

this form doesn't have Core 2, 2.1, 3.0, 3.1 or 5 in the .Net Framework drop down. Just gonna pick 4.8 even though it doesn't apply. I am using core 5.

• ArgumentOutOfRangeException: Index and length must refer to a location within the string. (Parameter 'length')

  • string.Substring(int startIndex, int length)

  • Kendo.Mvc.Rendering.KendoHtmlGenerator.SanitizeId(string id)

  • Kendo.Mvc.UI.WidgetBase.get_Id()

  • Kendo.Mvc.UI.WidgetBase.RenderTrialMessage(TextWriter writer)

  • Kendo.Mvc.UI.WidgetBase.RenderHtml(TextWriter writer)

  • Kendo.Mvc.UI.WidgetBase.ToHtmlString()

  • Kendo.Mvc.UI.Fluent.WidgetBuilderBase<TViewComponent, TBuilder>.ToHtmlString()

  • Kendo.Mvc.UI.Fluent.WidgetBuilderBase<TViewComponent, TBuilder>.WriteTo(TextWriter writer, HtmlEncoder encoder)

  • Microsoft.AspNetCore.Mvc.ViewFeatures.Buffers.ViewBuffer.WriteToAsync(TextWriter writer, HtmlEncoder encoder)

  • Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderLayoutAsync(ViewContext context, ViewBufferTextWriter bodyWriter)

  • Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderLayoutAsync(ViewContext context, ViewBufferTextWriter bodyWriter)

  • Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderAsync(ViewContext context)

  • Microsoft.AspNetCore.Mvc.ViewFeatures.ViewExecutor.ExecuteAsync(ViewContext viewContext, string contentType, Nullable<int> statusCode)

  • Microsoft.AspNetCore.Mvc.ViewFeatures.ViewExecutor.ExecuteAsync(ViewContext viewContext, string contentType, Nullable<int> statusCode)

  • Microsoft.AspNetCore.Mvc.ViewFeatures.ViewExecutor.ExecuteAsync(ActionContext actionContext, IView view, ViewDataDictionary viewData, ITempDataDictionary tempData, string contentType, Nullable<int> statusCode)

  • Microsoft.AspNetCore.Mvc.ViewFeatures.ViewResultExecutor.ExecuteAsync(ActionContext context, ViewResult result)

  • Microsoft.AspNetCore.Mvc.ViewResult.ExecuteResultAsync(ActionContext context)

  • Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeResultAsync>g__Logged|22_0(ResourceInvoker invoker, IActionResult result)

  • Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeNextResultFilterAsync>g__Awaited|30_0<TFilter, TFilterAsync>(ResourceInvoker invoker, Task lastTask, State next, Scope scope, object state, bool isCompleted)

  • Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Rethrow(ResultExecutedContextSealed context)

  • Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.ResultNext<TFilter, TFilterAsync>(ref State next, ref Scope scope, ref object state, ref bool isCompleted)

  • Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeResultFilters>g__Awaited|28_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, object state, bool isCompleted)

  • Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeNextResourceFilter>g__Awaited|25_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, object state, bool isCompleted)

  • Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Rethrow(ResourceExecutedContextSealed context)

  • Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Next(ref State next, ref Scope scope, ref object state, ref bool isCompleted)

  • Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeFilterPipelineAsync>g__Awaited|20_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, object state, bool isCompleted)

  • Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeAsync>g__Logged|17_1(ResourceInvoker invoker)

  • Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeAsync>g__Logged|17_1(ResourceInvoker invoker)

  • Microsoft.AspNetCore.Routing.EndpointMiddleware.<Invoke>g__AwaitRequestTask|6_0(Endpoint endpoint, Task requestTask, ILogger logger)

  • Microsoft.AspNetCore.Authorization.AuthorizationMiddleware.Invoke(HttpContext context)

  • Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.Invoke(HttpContext context)

Steps to reproduce

1. Execute the code below
2. Enter some values in the Html and Kendo inputs
3. Hit the browser's back button
4. Hit the browser's forward button to redisplay the page

Current Behavior

The value in the Html Input is restored but not the value of the Kendo Input. The same behavior applies for Kendo NumericTextBox, etc.

<!DOCTYPE html>
<html>
  <head>
    <link rel="stylesheet" href="https://kendo.cdn.telerik.com/2021.3.1207/styles/kendo.bootstrap-v4.min.css" />
    <script src="https://kendo.cdn.telerik.com/2021.3.1207/js/jquery.min.js"></script>
    <script src="https://kendo.cdn.telerik.com/2021.3.1207/js/kendo.all.min.js"></script>
    <script src="https://kendo.cdn.telerik.com/2021.3.1207/js/kendo.aspnetmvc.min.js"></script>
  </head>
  <body>
    <form>
 
      <div>
        <label for="HtmlInput">Html Input</label>
        <input type="text" id="HtmlInput" name="HtmlInput">
      </div>
 
      <div>
        <label for="KendoInput">Kendo Input</label>
        @(Html.Kendo().TextBox ().Name ("KendoInput"))
      </div>
 
    </form>
  </body>
</html>

### Bug report

The Button TagHelper is missing in the Visual Studio 2022 IntelliSense. 

### Reproduction of the problem

Create a Telerik UI for ASP.NET Core application (.NET 6) and try to insert a Button TagHelper by using the IntelliSense. It appears that not all available Telerik UI components are available in the suggested list.

### Environment

* **Visual Studio Professional 2022 version: 17.1.0 Preview 1.1

* **Kendo UI version: 2021.3.1109
* **jQuery version: 1.12.4
* **Browser: [all]

Hi Team,

I'd like to request adding a configuration to the Kendo UI Grid or ExcelExport event which would be a setting to autofit the Excel sheet columns instead of changing the workbook.sheets.columns.autowidth. 

Thank you!

Hi,

In some of the mobile interfaces, we do see a feature where users slide the submit button to trigger the form submission.

However, in the desktop interfaces, we have yet to see such a feature.

The Slide to Submit feature may help developers and users to reduce the usage of reCaptcha in some of the Form submissions.

Please add an option so that is possible to set Deferred rendering default setting to either true or false globally.

Currently the default is false and can only be overwritten on a control basis and not globally.

This would benefit those customers that have decided that all/most of the controls are rendered as deferred(true). Currently they have to append the Deffered(true) to each of the helpers.

I`m working development and produced I4.0 devices as well app systems since 3 years.  Are Telerick involve in this applications. 

Dear Telerik Team

I have recently found a bug in the asp.net core Scheduler.

 What I did (using this demo):

1. Created a daily event

2. Edited the second event (the current occurrence) and saved it

3. Tried to edit the second event again

The problem is now that the popup if I want to edit the current occurrence or series still showed up but it should not.

We had the same problem also on our asp.net core application.

Best Regards

Jan

Hi!

We're using a drop down list as a grid cell's edit template, but.. our users are unable to properly edit the rows at the bottom of the grid due to drop down list going off the page, and closing when they attempt to scroll.

any ideas?

When you create a Grid using a TModel that inherits from DynamicObject, a type cast exception is thrown when setting the DataSource Model Id property.

public class Metadata : DynamicObject
{
    ...
}  

...
.DataSource(dataSource =>
{
    dataSource.Ajax()
      .Model(model =>
      {
          model.Id("Id");
      });
})

A type cast exception is thrown by the following line in Kendo\AspNet.Core\Kendo.Mvc\UI\DataSource\Fluent\DataSourceModelDescriptorFactoryBase.cs because ModelDynamicDataKey is not generic, so it cannot be cast to IDataKey<TModel>

dataKey = (IDataKey<TModel>)new ModelDynamicDataKey(fieldName, lambdaExpression);

The following code changes fix the issue:

DataSourceModelDescriptorFactoryBase.cs

namespace Kendo.Mvc.UI.Fluent
{
	using System.Reflection;
	using Extensions;

	/// <summary>
	/// Defines the fluent interface for configuring the <see cref="DataSource"/> Model definition.
	/// </summary>
	/// <typeparam name="TModel">Type of the model</typeparam>
	public abstract class DataSourceModelDescriptorFactoryBase<TModel> : IHideObjectMembers
        where TModel : class
    {
        protected readonly ModelDescriptor model;

        public DataSourceModelDescriptorFactoryBase(ModelDescriptor model)
        {
            this.model = model;
        }

        /// <summary>
        /// Specify the member used to identify an unique Model instance.
        /// </summary>
        /// <param name="fieldName">The member name.</param>
        protected void Id(string fieldName)
        {
            IDataKey<TModel> dataKey;
            if (typeof(TModel).IsDynamicObject())
            {
                var lambdaExpression = ExpressionBuilder.Expression<TModel, object>(fieldName);
                dataKey = new ModelDynamicDataKey<TModel>(fieldName, lambdaExpression);
            }
            else
            {
                dataKey = GetDataKeyForField(fieldName);
            }

            dataKey.RouteKey = dataKey.Name;

            model.Id = dataKey;
        }

        protected IDataKey<TModel> GetDataKeyForField(string fieldName)
        {
            var lambdaExpression = ExpressionBuilder.Lambda<TModel>(fieldName);
            var fieldType = typeof(ModelDataKey<,>).MakeGenericType(new[] { typeof(TModel), lambdaExpression.Body.Type });

            var constructor = fieldType.GetConstructor(new[] { lambdaExpression.GetType() });

            return (IDataKey<TModel>)constructor.Invoke(new object[] { lambdaExpression });
        }
    }
}

ModelDynamicDataKey.cs

namespace Kendo.Mvc.UI
{
    using System;
    using System.Linq.Expressions;
    using Microsoft.AspNetCore.Mvc.Rendering;

    internal class ModelDynamicDataKey<TModel> : IDataKey<TModel>
        where TModel : class
    {
        public ModelDynamicDataKey(string memberName, Expression<Func<TModel, object>> expression)
        {
            RouteKey = "id";
            Name = memberName;
            Expression = expression;
            Value = expression.Compile();
        }

        public string Name
        {
            get;
        }

        public string RouteKey
        {
            get;
            set;
        }

        public Func<TModel, object> Value
        {
            get;
        }

        public Expression<Func<TModel, object>> Expression
        {
            get;
        }

        public object GetValue(object dataItem)
        {
            try
            {
                return Value((TModel)dataItem);
            }
            catch (Microsoft.CSharp.RuntimeBinder.RuntimeBinderException)
            {
                return null;
            }
        }

        public string HiddenFieldHtml(IHtmlHelper<TModel> htmlHelper)
        {
            return htmlHelper.Hidden(Name, null, new { id = "" }).ToString();
        }
    }
}

This is actually a request for ALL PivotGrid Controls across the Telerik family. Currently only numeric values can be used in a PivotGrid. There are many instances when it can be really useful to perform Pivots on string values. Currently Telerik does not support this feature and I need to use the DevExpress PivotGrid to accomplish my use case. I would like to see Telerik adopt this same functionality.