Questions on UI for ASP.NET Core Forum

1 answer

158 views

Tooltip Template and Content Security Policy

This link says:

To remove the unsafe-eval keyword from the meta tag of your application, you must convert all client templates (inline, external, and partial templates) into CSP-compatible templates.

How do I convert this tooltip template into a CSP-compatible template?

                @(Html.Kendo().TreeMap()
                    .Name("tmReason")
                    .DataSource(ds => ds
                        .Read(r => r.Url("?handler=ReadTop5Reasons"))
                        .Model(m => m.Children("Items"))
                    )
                    .Type(TreeMapType.Squarified)
                    .Template(Html.Kendo().Template().AddHtml("${data.text}: ${data.dataItem.Number}"))
                    .ValueField("Number")
                    .TextField("Category")
                    .ColorField("color")
                )
                <script id="tmplReasonTooltip" type="text/x-kendo-template">
                    <p>#=target[0].innerHTML#</p>
                </script>
                @(Html.Kendo().Tooltip()
                    .For("#tmReason")
                    .Filter(".k-leaf")
                    .Position(TooltipPosition.Top)
                    .ContentTemplateId("tmplReasonTooltip")
                    .Width(200.0)
                )

Thank you

ToolTip

answered on 26 Jul 2024

0 answers

191 views

Html.Kendo().TextBoxFor inside a form renders textboxes with different heights.

Hi all,

Need some assistance with this one please - may be something simple but I've been battling to get this right all day.

I have following this article to build a step-wise wizard: https://www.telerik.com/blogs/step-wise-forms-with-asp-net-mvc-and-kendo-ui

Everything is working well and as expected however on my first tabstrip (content loaded from a partialview) I have several inputs for various fields.

Some fields display correctly and some is smaller in height. They are defined all the same in the source file (with the exception of the field name). Both the below samples point to string fields.

I don't have any css defined elsewhere, just bootstrap and fluent style in use.

Eg:

Form declaretion:

...

@using (Html.BeginForm("AddCRMClient", "CRM", FormMethod.Post, new { role = "form" }))

...

Displays correctly:

...

<div class="col-7">
@Html.LabelFor(m => m.CustomerName, new { @class = "form-label" })
@(Html.Kendo().TextBoxFor(m => m.CustomerName)
.HtmlAttributes(new { placeholder = "", type = "text", @class = "k-textbox" })
)
</div>

...

Height is smaller:

...

<div class="col-6">
@Html.LabelFor(m => m.VATNumber, new { @class = "form-label" })
@(Html.Kendo().TextBoxFor(m => m.VATNumber)
.HtmlAttributes(new { placeholder = "", type = "text", @class = "k-textbox" })
)
</div>

...

This is the result:

As you can see there are many controls that does not display correctly.

When I look at these via dev tools, I can see the controles that display correctly does have 2 spans which encapsulates the input, the ones that does not display correctly only has one span.

Eg:

vs.

Layout file to show referenced css, js files.

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>@ViewData["Title"] - VAPS Admin System</title>

<environment names="Development">
<link rel="stylesheet" href="~/lib/bootstrap/css/bootstrap.css" />
</environment>
<environment names="Staging,Production">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/bootstrap.min.css"
asp-fallback-href="~/lib/bootstrap/css/bootstrap.min.css"
asp-fallback-test-class="sr-only" asp-fallback-test-property="position" asp-fallback-test-value="absolute" />
</environment>
@*Core Content Start*@

<link rel="stylesheet" href="~/css/kendofonts.css" />

<script src="~/js/site.js"></script>

<script src="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.1/js/all.min.js" integrity="sha512-GWzVrcGlo0TxTRvz9ttioyYJ+Wwk9Ck0G81D+eO63BaqHaJ3YZX9wuqjwgfcV/MrB2PhaVX9DkYVhbFpStnqpQ==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.1/css/all.min.css" integrity="sha512-DTOQO9RWCH3ppGqcWaEA1BIZOC6xxalwEsw9c2QQeAIftl+Vegovlnee1c9QX4TctnWMn13TZye+giMm8e2LwA==" crossorigin="anonymous" referrerpolicy="no-referrer" />

<link href="@Url.Content("~/lib/kendo-ui/styles/fluent-main.css")" rel="stylesheet" type="text/css" />
<script src="@Url.Content("~/lib/jquery/jquery.min.js")"></script>
<script src="@Url.Content("~/lib/kendo-ui/js/jszip.min.js")"></script>
<script src="@Url.Content("~/lib/kendo-ui/js/kendo.all.min.js")"></script>
<script src="@Url.Content("~/lib/kendo-ui/js/kendo.aspnetmvc.min.js")"></script>

<link rel="stylesheet" href="~/css/site.css" />

<script src="~/lib/kendo-ui/js/cultures/kendo.culture.en-ZA.min.js"></script>
@*Core Content End*@

.............

What would cause this, and how do I fix it?

Using Telerik.UI.for.AspNet.Core Version 2023.3.1114 with VS 2022.

Thanks in advance.

Form

TabStrip

TextBox

asked on 25 Jul 2024

1 answer

120 views

ASP.NET Core Grid & Scheduler in RazorPages - Can't parse DateTime to DB and show List of Enum, Problems with Localization

Hello,

I've got a RazorPages-Project with a Grid and a Scheduler.

I'm trying to add entries to the grid inline.

The simple text fields are working as expected but when trying to save the DateTime for Start and End, always the min value of DateTime is ending up being in the Start and End fields of the model. Moreover the list of enums is not shown correctly, I also tried it with a JS function to get the list in a ClientTemplate but that didn't work for me, now it shows [object Object]. Also the DefaultValue for title property is not set correctly. This is what I got so far.

Model:

    public class VisitViewModel : ISchedulerEvent
    {
        public int Id { get; set; }

        public string? Title { get; set; } = "";

        public string? Description { get; set; } = "";

        public bool IsAllDay { get; set; } = false;

        public string? StartTimezone { get; set; } = "";

        public string? EndTimezone { get; set; } = "";

        public string? RecurrenceRule { get; set; } = "";

        public string? RecurrenceException { get; set; } = "";

        public List<Departments>? Departments { get; set; } = new List<Departments>();

        [DataType(DataType.DateTime)]
        [DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = "{0:dd.MM.yyyy HH:mm}")]
        public DateTime Start { get; set; }

        [DateGreaterThan(OtherField = "Start")]
        [DataType(DataType.DateTime)]
        [DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = "{0:dd.MM.yyyy HH:mm}")]
        public DateTime End { get; set; }

        public string Visitor { get; set; } = "";

        public string Company { get; set; } = "";

        public string Welcomer { get; set; } = "";
    }

Page:

@page
@model           .Pages.DetailsModel

@{
}

@using           .Data.Enum
@using           .ViewModels
@using Kendo.Mvc.UI

@inject Microsoft.AspNetCore.Antiforgery.IAntiforgery Xsrf
@Html.AntiForgeryToken()


@(
Html.Kendo().Grid<VisitViewModel>()
            .Name("grid")
            .Editable(e => e.Mode(GridEditMode.InLine))
            .Scrollable(scrollable => scrollable.Endless(true))
            .Scrollable(a => a.Height("250px"))
            .ToolBar(x => x.Create())
            .Columns(columns =>
            {
                columns.Bound(column => column.Start).Width(250).Format("{0:dd.MM.yyyy HH:mm}").EditorTemplateName("DateTime");
                columns.Bound(column => column.End).Width(250).Format("{0:dd.MM.yyyy HH:mm}").EditorTemplateName("DateTime");
                columns.Bound(column => column.Visitor).Width(250);
                columns.Bound(column => column.Company).Width(250);
                columns.Bound(column => column.Welcomer).Width(250);
                columns.Bound(column => column.Departments).EditorTemplateName("Departments");
                columns.Bound(column => column.Description);
                columns.Command(column =>
                {
                    column.Edit();
                    column.Destroy();
                }).Width(230);
            })
            .DataSource(ds => ds.Ajax()
            .Read(r => r.Url("/Details?handler=Read").Data("forgeryToken"))
            .Update(u => u.Url("/Details?handler=Update").Data("forgeryToken"))
            .Create(c => c.Url("/Details?handler=Create").Data("forgeryToken"))
            .Destroy(d => d.Url("/Details?handler=Destroy").Data("forgeryToken"))
            .Model(m =>
            {
                m.Id(id => id.Id);

                m.Field(visit => visit.Title).DefaultValue("");

                m.Field(visit => visit.Departments).DefaultValue(new List<Departments>());

                m.Field(visit => visit.StartTimezone).DefaultValue("Etc/GMT+2");
                m.Field(visit => visit.EndTimezone).DefaultValue("Etc/GMT+2");

                m.Field(visit => visit.Start).DefaultValue(DateTime.Now);
                m.Field(visit => visit.End).DefaultValue(DateTime.Now);
            })
            .PageSize(5)
            )
            .Pageable()
)
@(
Html.Kendo().Scheduler<VisitViewModel>()
            .Name("scheduler")
            .Height(700)
            .DataSource(ds =>
            {
                ds.Read(r => r.Url("/Details?handler=Read").Data("forgeryToken"));
                ds.Update(u => u.Url("/Details?handler=Update").Data("forgeryToken"));
                ds.Create(c => c.Url("/Details?handler=Create").Data("forgeryToken"));
                ds.Destroy(d => d.Url("/Details?handler=Destroy").Data("forgeryToken"));
            })
)



<script type="text/javascript">
    function forgeryToken() {
        return kendo.antiForgeryTokens();
    } 
</script>

PageModel:

public class DetailsModel : PageModel
{
    private readonly          Context _context;

    public DetailsModel(         Context context)
    {
        _context = context;
    }

    public void OnGet()
    {
    }

    public override void OnPageHandlerExecuting(PageHandlerExecutingContext context)
    {
        CultureInfo.DefaultThreadCurrentCulture = CultureInfo.DefaultThreadCurrentUICulture = new CultureInfo("de-DE");

        base.OnPageHandlerExecuting(context);
    }

    public JsonResult OnPostRead([DataSourceRequest] DataSourceRequest request)
    {
        return new JsonResult(_context.VisitViewModels.ToDataSourceResult(request));
    }

    public JsonResult OnPostCreate([DataSourceRequest] DataSourceRequest request, VisitViewModel visit)
    {
        _context.VisitViewModels.Add(visit);
        _context.SaveChanges();

        return new JsonResult(new[] { visit }.ToDataSourceResult(request, ModelState));
    }

    public JsonResult OnPostUpdate([DataSourceRequest] DataSourceRequest request, VisitViewModel visit)
    {
        _context.VisitViewModels.Update(visit);
        _context.SaveChanges();
        return new JsonResult(new[] { visit }.ToDataSourceResult(request, ModelState));
    }

    public JsonResult OnPostDestroy([DataSourceRequest] DataSourceRequest request, VisitViewModel order)
    {
        _context.VisitViewModels.Remove(order);
        _context.SaveChanges();
        return new JsonResult(new[] { order }.ToDataSourceResult(request, ModelState));
    }
}

EditorTemplate DateTime

@model DateTime?

@(Html.Kendo().DateTimePickerFor(m => m).HtmlAttributes(new { title = Html.ViewContext.ViewData.TemplateInfo.GetFullHtmlFieldName("") }).Format("{0:dd.MM.yyyy HH:mm}"))

Furthermore I have problems with the language in my project, maybe this correlates. They are mixed up as you can see in the attachment.

answered on 23 Jul 2024

1 answer

113 views

Custom functions recalculations in Telerik.Web.Spreadsheet

Hello. i m wishing to use in future telerik ui for asp.net core for my projects.

I use Telerik.UI.for.AspNet.Core and Telerik.Web.Spreadsheet packages for VS 2022.

Right now i'm testing in demo version realization of formulas. I made my formulas, it works good, makes the result that i want

But looks like it recalculates formula in ANY change on the sheet. .
Its a big optimization problem cause i need a big sheet with thousands cells with this formula
Any way to avoid it?

I need to recalculate formulas only if depended cells were changed just like base formulas works, but i don't see in documentation any way to make it

Looks like whole telerik formulas works like that. any change makes rerender of sheet and recalculation of any formulas

Spreadsheet

answered on 23 Jul 2024

2 answers

179 views

Add button to GROUP HEADER

How is it possible to add a fully functional icon button in grids Group Header ?

My approach :

                @(Html.Kendo().Grid<ClaimViewModel>()
                    .Name("dgvClaims")
                    .Columns(columns =>
                    {
                        columns.Command(command => command.Custom("Vorgang hinzufügen").IconClass("save").Click("showDetails")).Width(300);
                        columns.Bound(p => p.Id).Filterable(false).Visible(false);
                        @* columns.Bound(p => p.ClaimId).ClientGroupHeaderTemplate(@"<div>Alfred Mustermann</div><div><button name=""textButton"" theme-color=""ThemeColor.Primary"" type=""button"" icon=""arrow-rotate-cw"" on-click=""onClick"">Add Button</button></div>"); *@
                        columns.Bound(p => p.ClaimId).ClientGroupHeaderTemplate(@"<div>
                                                                                    <div>Alfred Mustermann</div>
                                                                                    <kendo-button name=""textButton"" type=""button"" theme-color=""ThemeColor.Primary"">Add Button</kendo-button>
                                                                                  </div>");
                        columns.Bound(p => p.VnName).Width(300);
                        columns.Bound(p => p.ClaimState).Title("Status").Width(100);
                        columns.Bound(p => p.ClaimnumberInsurance).Title("Schadennummer VU").Width(150);
                        columns.Bound(p => p.ClaimnumberRisktaker).Title("Schadennummer Risikoträger").Width(150);
                        columns.Bound(p => p.ClaimFriendlyName).Title("Beschreibung").Width(200);
                        columns.Bound(p => p.ClaimDate).Title("Schadendatum").Format("{0:dd.MM.yyyy}");
                        columns.Bound(p => p.ClaimItemReference).Title("Verweis auf Mappeneintrag").Width(200);
                        columns.Bound(p => p.ClaimItemReferenceType).Title("Eintragstyp").Width(150);
                        columns.Bound(p => p.ClaimItemRemark).Title("Bemerkungen").Width(150);

                    })
                    .Selectable(s => s.Mode(GridSelectionMode.Single)
                    .Type(GridSelectionType.Row))
                    .Pageable()
                    .Sortable()
                    .Scrollable()
                    .Filterable()

                   .HtmlAttributes(new { style = "height:650px;" })
                   .Events(events => events.Change("onChangeCustomerGrid"))
                   .DataSource(dataSource => dataSource.Ajax()

Grid

answered on 22 Jul 2024

1 answer

71 views

Kendo Editor from Grid column

Hello,

Is it possible to use a Grid's built-in popup editor to display a Kendo Editor component? I'm finding some solutions that are close, but not quite exactly what I'm looking for. Basically one of the columns in the Grid has a need to allow rich HTML text when creating/editing, and the Kendo Editor seems to be the best way to do this.

Editor

Grid

answered on 22 Jul 2024

0 answers

126 views

Asp.Net core popup editing with tag helper

I want to create a edit popup template where I want to display the 2 to 3 fields in a single row. First question:- Can I do this in the existing template.
Second question:- If I create a separate template how to pass and bind the model to the template.

Grid

asked on 17 Jul 2024

1 answer

136 views

Layout and navigation questions

For my app I ideally would like to achieve the following layout :

Fixed / static header with links to most commonly used areas of the app, each with expandable sub links to more specific locations
Left hand slide menu - ideally with some icons down the left for quick access to a section, or able to be expanded via an icon which is in the header - each section would also need to have expandable links ideally
Ideally a fixed / static footer, although this is less important

So am I right in thinking this is the way to go about it?

Header - this would be an app bar component,

Expandable links within the header - a menu component embedded within the app bar for the expandable links

Left bar - this would be a drawer component so it can show the icons and be expanded on demand - would this also need an embedded menu component so each section can expand?

Thanks

AppBar

Drawer

Menu

answered on 16 Jul 2024

1 answer

76 views

Clarification on Grid items

So have a question as I may just not understand the difference to what I think something controls to what it actually controls. When I select the add new record it triggers the following line control:

If e.CommandName = RadGrid.UpdateCommandName Then

Additionally, the edit button also triggers the same line. Is there a way to make that button on the grid trigger one or the other, specifically the performinsertcommand or are both supposed to trigger the same command?

(see picture below)

Code headers for that grid:

<telerik:RadGrid ID="RadGrid" runat="server" AllowPaging="True" Width="800px" OnItemDataBound="RadGrid_ItemDataBound" OnNeedDataSource="RadGrid_NeedDataSource" OnItemCommand="RadGrid_ItemCommand" 
    OnItemCreated="RadGrid_ItemCreated" OnDeleteCommand="RadGrid_ItemDeleted" Skin="MetroTouch">

Grid

answered on 16 Jul 2024

2 answers

1.2K+ views

Open a modal dialog from a grid with filtered data

I am currently trialing the products to see if I can get them to do what I need for an app under development.

In my app I have a grid that lists all of a customers active products.

I want to be able to click on an item in the grid (link or button) to launch a modal dialog where I can display in depth info regarding that item - the popup itself would need to have tabstrip and perhaps one or two grids on itself.

So I obviously need to design a view to display all this info which is fine, and I assume the Window component is the most suitable to effect the popup?

I can't seem to find a concrete example of how to call the window from the initial grid, pass the parameter of the selected item, and then load the view within the window.

As I say I am new to all this so feeling my way a little and so any guidance is greatly appreciated.

Thanks

Grid

Window

answered on 16 Jul 2024