Using the new Grid grouping feature in 1.6, the Grouping button and the group header row both use the field name of the group column, rather than the title.  This is visible in the animated demo, where a column titled "On Vacation" becomes "IsOnLeave" once it is used as a group name.

I expect this is already known and slated to be fixed, but there aren't any grouping issues at all in the public tracker, so just in case...

For the Grid, is is possible to have a a SortField along with Field (that displays the data) in columns.

The SortField will be used instead of Field when sorting (if Grid is Sortable), like in WebForms: https://docs.microsoft.com/en-us/dotnet/api/system.web.ui.webcontrols.gridview.sortexpression?view=netframework-4.8.

Maybe you want to sort data based on other values instead of what is displayed.

This could be especially useful for dates that have been formatted for display in Field

but you don't want to use for sorting because date and string sorting is not the same.

The CSS classes used by Blazor UI are not documented. (I haven't looked outside the Blazor area, so maybe it's somewhere else in the docs? My team has no need for other Telerik products.) On a similar note, the Themes page in the documentation explains how to reference alternate themes like Bootstrap, but it doesn't explain how to actually use the classes, or how it integrates with the real Bootstrap CSS, which have many various useful, well-known utilities like margin and padding settings, which don't seem to be part of the Telerik theme support. (I'm an architect at a very large corporation, we do have one of those includes-everything DevCraft licenses, I just can't log in with that account.)

If filtering is enabled, the error may prevent the view from rendering  similar to NotImplementedException: Unexpected frame type during RemoveOldFrame: None.

Without filtering, an exception is thrown when you attempt to edit a field, similar to Error: System.InvalidCastException: Unable to cast object of type 'System.String' to type 'System.Nullable`1[System.Int64]'.

You may get an exception like

InvalidOperationException: The current thread is not associated with the Dispatcher. Use Invoke() or InvokeAsync() to switch execution to the Dispatcher when triggering rendering or modifying any state accessed during rendering.

or you may get components that simply don't work (for example, a Window does not show, a treeview does not expand).

The solution is to revert to the RenderComponentAsync method in your _Hosts.cshtml file.

What about supporting INotifyCollectionChanged data source for the Grid?

When trying to create a treeview inside of another treeview template I get the following error

[2019-07-19T00:58:28.003Z] Error: System.InvalidOperationException: Object of type 'Telerik.Blazor.Components.TreeView.TelerikTreeView' does not have a property matching the name 'ChildContent'.

   at Microsoft.AspNetCore.Components.ParameterCollectionExtensions.ThrowForUnknownIncomingParameterName(Type targetType, String parameterName)

   at Microsoft.AspNetCore.Components.ParameterCollectionExtensions.SetParameterProperties(ParameterCollection& parameterCollection, Object target)

   at Microsoft.AspNetCore.Components.ComponentBase.SetParametersAsync(ParameterCollection parameters)

   at Telerik.Blazor.Components.TreeView.TelerikTreeViewBase.SetParametersAsync(ParameterCollection parameters)

   at Microsoft.AspNetCore.Components.Rendering.ComponentState.SetDirectParameters(ParameterCollection parameters)

   at Microsoft.AspNetCore.Components.Rende...

A Gantt Chart is one big thing missing that is always high on my blazor UI wish list.

Kind regards,

Kay

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ADMIN EDIT

For the time being, a workaround could be to wrap a JS widget, an example is available in this sample project, see the MyKendoGantt.razor component.

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It would be great if the controls supported arbitrary attributes. Similar to how it is done in the native form editing controls in Blazor framework.

ASP.NET Core Blazor forms and validation

"All of the input components, including EditForm, support arbitrary attributes. Any attribute that doesn't match a component parameter is added to the rendered HTML element."

After upgrading from 1.1.1 to 1.2.0 I get following exception on app start when hosted on azure app service, locally it works fine.

I have tried using the "static assets" and "CDN" version for retrieving the .js file, both yield this error.

An error occurred while starting the application.
DirectoryNotFoundException: C:\Users\VssAdministrator\.nuget\packages\telerik.ui.for.blazor.trial\1.2.0\staticwebassets\

Microsoft.Extensions.FileProviders.PhysicalFileProvider..ctor(string root, ExclusionFilters filters)

    DirectoryNotFoundException: C:\Users\VssAdministrator\.nuget\packages\telerik.ui.for.blazor.trial\1.2.0\staticwebassets\
        Microsoft.Extensions.FileProviders.PhysicalFileProvider..ctor(string root, ExclusionFilters filters)
        Microsoft.Extensions.FileProviders.PhysicalFileProvider..ctor(string root)
        Microsoft.AspNetCore.StaticWebAssetsFileProvider..ctor(string pathPrefix, string contentRoot)
        Microsoft.AspNetCore.StaticWebAssetsLoader+<>c.<UseStaticWebAssetsCore>b__2_0(ContentRootMapping cr)
        System.Linq.Enumerable+SelectEnumerableIterator<TSource, TResult>.MoveNext()
        System.Linq.Enumerable.OfTypeIterator<TResult>(IEnumerable source)+MoveNext()
        System.Collections.Generic.List<T>..ctor(IEnumerable<T> collection)
        System.Linq.Enumerable.ToList<TSource>(IEnumerable<TSource> source)
        Microsoft.AspNetCore.StaticWebAssetsLoader.UseStaticWebAssetsCore(IWebHostEnvironment environment, Stream manifest)
        Microsoft.AspNetCore.StaticWebAssetsLoader.UseStaticWebAssets(IWebHostEnvironment environment)
        Microsoft.AspNetCore.WebHost+<>c.<ConfigureWebDefaults>b__9_0(WebHostBuilderContext ctx, IConfigurationBuilder cb)
        Microsoft.AspNetCore.Hosting.Internal.GenericWebHostBuilder+<>c__DisplayClass8_0.<ConfigureAppConfiguration>b__0(HostBuilderContext context, IConfigurationBuilder builder)
        Microsoft.Extensions.Hosting.HostBuilder.BuildAppConfiguration()
        Microsoft.Extensions.Hosting.HostBuilder.Build()
        *.Program.Main(string[] args) in Program.cs

    System.IO.DirectoryNotFoundException: C:\Users\VssAdministrator\.nuget\packages\telerik.ui.for.blazor.trial\1.2.0\staticwebassets\

       at Microsoft.Extensions.FileProviders.PhysicalFileProvider..ctor(String root, ExclusionFilters filters)

       at Microsoft.Extensions.FileProviders.PhysicalFileProvider..ctor(String root)

       at Microsoft.AspNetCore.StaticWebAssetsFileProvider..ctor(String pathPrefix, String contentRoot)

       at Microsoft.AspNetCore.StaticWebAssetsLoader.<>c.<UseStaticWebAssetsCore>b__2_0(ContentRootMapping cr)

       at System.Linq.Enumerable.SelectEnumerableIterator`2.MoveNext()

       at System.Linq.Enumerable.OfTypeIterator[TResult](IEnumerable source)+MoveNext()

       at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)

       at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)

       at Microsoft.AspNetCore.StaticWebAssetsLoader.UseStaticWebAssetsCore(IWebHostEnvironment environment, Stream manifest)

       at Microsoft.AspNetCore.StaticWebAssetsLoader.UseStaticWebAssets(IWebHostEnvironment environment)

       at Microsoft.AspNetCore.WebHost.<>c.<ConfigureWebDefaults>b__9_0(WebHostBuilderContext ctx, IConfigurationBuilder cb)

       at Microsoft.AspNetCore.Hosting.Internal.GenericWebHostBuilder.<>c__DisplayClass8_0.<ConfigureAppConfiguration>b__0(HostBuilderContext context, IConfigurationBuilder builder)

       at Microsoft.Extensions.Hosting.HostBuilder.BuildAppConfiguration()

       at Microsoft.Extensions.Hosting.HostBuilder.Build()

       at *.Program.Main(String[] args) in d:\a\1\s\*\Program.cs:line 11

.NET Core 3.0.0-preview6-27804-01 X86 v4.0.0.0    |   Microsoft.AspNetCore.Hosting version 3.0.0-preview6.19307.2    |    Microsoft Windows 10.0.14393    |   Need help? 

    <input class="form-control" readonly="@(!EditMode)" type="text" @bind="@FormField.TextValue"/>