Progress® Telerik® UI for ASP.NET Core Feedback Portal

Bug report

Grid throws an error when there are double quotes in foreign key column values:

new TestSelectItem { Text = "AAA\"BBB\"CCC", Value = "2" },

Reproduction of the problem

Open and run the attached sample projectBadQuotes_sample.zip
Click ‘Add’ button

Current behavior

The following error is thrown in the console:

SyntaxError: Failed to execute 'appendChild' on 'Node': Unexpected identifier 'My' (at VM20:1:144)

Expected/desired behavior

There should be no error and the value should appear escaped:

Workaround:

Text = item.Text?
    .Replace("\\", "\\\\")
    .Replace("\"", "\\\"")

TicketID: 1717693

The issue is a regression starting with Ui for ASP.NET Core version 2024.4.1112

Environment

Kendo/Telerik version: 2026.3.811
Browser: [all ]

In Development

Last Updated: 08 Jun 2026 08:05 by ADMIN

ToDataSourceResult() is not able to perform query when the DataSourceRequest object contains grouping

Created by: AGUSTIN

Comments: 0

Category: Grid

Type: Feature Request

ToDataSourceResult() is not able to perform query when the DataSourceRequest object contains grouping

As a result of an EF Core issue, the ToDataSourceResult() is not able to perform the query when the DataSourceRequest object contains grouping.

The problem occurs using the query below, assembled by Telerik routine:

var temp = _db.Pessoa
    .OrderBy(item => item.Email)
    .Skip(0)
    .Take(40)
    .GroupBy(item => item.Email)
    .OrderBy(g => g.Key)
    .Select(g => new AggregateFunctionsGroup
    {
        Key = g.Key,
        ItemCount = g.Count(),
        HasSubgroups = false,
        Member = "Email",
        AggregateFunctionsProjection = new
        {
            Count_Referencia = _db.Pessoa
                    .Select(t => new
                    {
                        t.IdPessoa,
                        t.Referencia,
                        t.Nome_RazaoSocial,
                        t.Apelido_Fantasia,
                        t.CPF_CNPJ,
                        t.RG_IE,
                        t.Email
                    })
                    .OrderBy(item => item.Email)
                    .Where(item => item.Email == g.Key)
                    .Count()
        },
        Items = g
    })
    .ToList();

In the routine where the AggregateFunctionsGroup is created, the Items property must not only be the query itself, but also the fields specified in the main Select. Or, the call to the Select() method must simply be added:

var temp = _db.Pessoa
    .OrderBy(item => item.Email)
    .Skip(0)
    .Take(40)
    .GroupBy(item => item.Email)
    .OrderBy(g => g.Key)
    .Select(g => new AggregateFunctionsGroup
    {
        Key = g.Key,
        ItemCount = g.Count(),
        HasSubgroups = false,
        Member = "Email",
        AggregateFunctionsProjection = new
        {
            Count_Referencia = _db.Pessoa
                    .Select(t => new
                    {
                        t.IdPessoa,
                        ...
                    })
                    .OrderBy(item => item.Email)
                    .Where(item => item.Email == g.Key)
                    .Count()
        },
        Items = g.Select(t => new
        {
            t.IdPessoa,
            ...
        })
    })
    .ToList();

This way, the issue does not occur.