Hi,

I have a grid inside a partial view that is bound to a local data (parent viewmodel is passed to the partial view).

The grid displays correctly the datas but when i try to edit a cell, i have this error: 'TypeError: Cannot read property 'Label' of undefined'.
Is there a way to solve this error?

Thanks;

I am using the 2018.1.221 Kendo UI for .Net Core.  It is a ASP MVC Core app using .net core 2.

This is a grid with Ajax source - the part having issues is here:

            .DataSource(dataSource => dataSource
                .Ajax()
                .Aggregates(a =>
                {
                    a.Add(l => l.Balance).Sum();
                })
                .Read(read => read.Action("Balances_Read", "Balances").Data("getAccountType"))
                .PageSize(250)
            )

This works fine on my development machine (and on a different site hosted on Azure) but on this particular app service I get this exception.  The exception goes away if I remove the aggregates code.  Here is the stack trace upstream from my call:

System.Exception: Unable to build typeDynamicClass3
   at Kendo.Mvc.Infrastructure.Implementation.ClassFactory.EmitType(String typeName, CSharpCompilation compilation)
   at Kendo.Mvc.Infrastructure.Implementation.ClassFactory.GetDynamicClass(IEnumerable`1 properties)
   at Kendo.Mvc.Infrastructure.Implementation.Expressions.GroupDescriptorExpressionBuilder.CreateProjectionNewExpression(IEnumerable`1 propertyValuesExpressions)
   at Kendo.Mvc.Infrastructure.Implementation.Expressions.GroupDescriptorExpressionBuilder.CreateProjectionInitExpression()
   at Kendo.Mvc.Infrastructure.Implementation.Expressions.GroupDescriptorExpressionBuilder.CreateAggregateFunctionsProjectionMemberBinding()
   at Kendo.Mvc.Infrastructure.Implementation.Expressions.QueryableAggregatesExpressionBuilder.<CreateMemberBindings>d__3.MoveNext()
   at System.Collections.Generic.LargeArrayBuilder`1.AddRange(IEnumerable`1 items)
   at System.Collections.Generic.EnumerableHelpers.ToArray[T](IEnumerable`1 source)
   at System.Dynamic.Utils.CollectionExtensions.ToReadOnly[T](IEnumerable`1 enumerable)
   at System.Linq.Expressions.Expression.MemberInit(NewExpression newExpression, IEnumerable`1 bindings)
   at Kendo.Mvc.Infrastructure.Implementation.Expressions.GroupDescriptorExpressionBuilder.CreateSelectBodyExpression()
   at Kendo.Mvc.Infrastructure.Implementation.Expressions.GroupDescriptorExpressionBuilder.CreateSelectExpression()
   at Kendo.Mvc.Infrastructure.Implementation.Expressions.GroupDescriptorExpressionBuilderBase.CreateQuery()
   at Kendo.Mvc.Extensions.QueryableExtensions.Aggregate(IQueryable source, IEnumerable`1 aggregateFunctions)
   at Kendo.Mvc.Extensions.QueryableExtensions.CreateDataSourceResult[TModel,TResult](IQueryable queryable, DataSourceRequest request, ModelStateDictionary modelState, Func`2 selector)
   at Bryt.Client.Web.Controllers.BalancesController.Balances_Read(DataSourceRequest request, Int32 accountType) in C:\DataDrive\Working\Bryt\Bryt.Client.Web\Controllers\BalancesController.cs:line 65

Again, oddly, this is isolated to running on Azure.

Thanks,

Brian

Hi

We started using Asp.net Core MVC components and have question regarding the tag helpers and wrappers and which to use.

Which one we need to use and when :

      Tag helpers vs Server side wrappers?

Can you please explain when we need to use any one of these and in which we need to use them??  thanks .

Hi, I was able to embed video using my own template and on change event under image browser.

                            change: function () {
                                var editor = $('#editor').data("kendoEditor");
                                var template = kendo.template($("#video-template").html());
                                var filename = $(".k-imagebrowser").find(".k-state-selected").children("strong").text();
                                var range = editor.getRange();
                                editor.selectRange(range);
                                editor.exec("insertHtml", { value: template({ source: $(".k-imagebrowser").data("kendoImageBrowser").dataSource.data()[0].blob + '/' + filename })});

                            }

but after the insert button click, it clears any content inside the editor.

I have already raised an issue on Stack Overflow about this and it is worth extending my enquiries here before my head explodes from the constant banging against my desk...
It's a simple question which will allow me to refactor my code (or not) before I pass an IQueryable to the toDataSource() method.

Does toDataSource() use async methods internally?

I am having problems with second operation on the context with a nested code block called from within my IQueryable.  The Stack Overflow post will explain in more depth.

Thanking anyone who can help in advance!

I've created a ViewComponent which shows details of a budget.  I pass the budget details model into to the ViewComponent, which works displaying the info, but once I make a change to the cost column (only column you can change). and Click the Save toolbar button... nothing happens.. except the grid is now empty and I see a busy indicator which never stops.  I based my code on the batch example found here: https://docs.telerik.com/aspnet-mvc/helpers/grid/editing/batch-editing   Any help would be appreciated.

bud_detailsController:

The ViewComponent:

P.S.  I put breakpoints in "Editing_Read" and "Editing_Update" and they never get hit.  I don't know why they are not being called.

Lester

Hi,

I am using TagHelpers to create multiselects in my form. I need to provide custom filtering function to filter my data by two fileds e.g FirstName and LastName (contains FirstName OR contains LastName). How can I do that?

I have a few groups of columns in my inline grid using columns.Group. I know I can hide these column groups entirely, but I have a dropdown in each row of the grid, and based on what is selected in that dropdown, I am firing a javascript event and examining the selected value. Based on this selected value, I would like to disable or hide these groups of columns in that particular row only! How can I go about doing this?

I cannot figure out how to change the buttons on the grids where "Export to Excel" or "Export PDF" is enabled.  What style can I set (override) that will control the .css for the buttons?

I see the post below this one with respect to the client group header and it works but must be added to each column.

1) How can I just add text to the grouping header changing it from the default text to "Grouped by Columns : " when the user drags a column there.  And then return it to default text when the user has clicked the icon to remove the grouping on that column?

2) How can I set the minimum width for the column indicator in the grouping header.  Right now it is truncating the text of the column name if it is too wide.

Thanks