Questions on UI for ASP.NET Core Forum

0 answers

602 views

Use loader to stop user from interaction until data saved/redirect

I have a general idea of the flow:

(i) Assign a unique id to your form (eg form-id) by changing your form code to:

@using (Html.BeginForm("SaveCountry", "Country", FormMethod.Post, new { id = "form-id" })) {
}

(ii) Put the loader on your page with a unique id. The div is hidden until the form is submitted. Need to use Kendo Loader here and place it in either a partial view or in _Layout so it is always available as hidden--by-default

(iii) Style the loader / loading div to go somewhere useful.

(iv) Show the loader when the form is submitted (and after any validation has been completed), for example (not sure about this):

<script>
    $("#form-id").on("submit", function () {
        $("#divLoading").show();
    });
</script>

(v) Given that the page will redirect, I can probably leave the loader until the page redirects. But if I need to hide the loader before that happens, I can use (Kendo Loader here + function defined in _layout as well):

$("#divLoading").hide();

Now I just need to use Kendo Loader with the above flow.

Loader

asked on 06 Aug 2022

1 answer

325 views

JavaScript not working on buttons within a Wizard step

I wanted to rule out if this is some kind of issue with Telerik - I've implemented this in CodePen and it works there, but not with what I'm using in Visual Studio w/ the entire code.

I have a series of buttons like so:

    <wizard-step title="Step 2">
                            <wizard-step-content><span class="nowrap d-flex flex-row"><div class="reasons">
                                                    @Html.RadioButtonFor(c => c.category, item.Value, new { id = item.Value, name = "Lists", @value = item.Value, @text = item.Text, @class = "reasons-input"})
                                                    <label for="@(item.Value)"
                                                       class="reasons-label">@item.Text</label></div><button type="button"
                                                    id="@item.Value"
                                                    class="inputBtn btn btn-secondary"
                                                    data-toggle="modal"
                                                    datatarget="#@item.Value"
                                                    style="background-color: transparent; border-color: transparent; color: #007bff; font-size: 21px;"><i class="fa fa-question-circle"></i></button></span>
</wizard-step-content>
                        </wizard-step>

And here's my attempt at setting up event listeners

  var inputButtons = document.querySelectorAll(".inputBtn");
            console.log(inputButtons);
            console.log(inputButtons.length);
            var buttonsCount = inputButtons.length;
                for (var i = 0; i <= buttonsCount; i += 1) {
                    inputButtons[i].addEventListener("click", function(e) {
                    console.log("HI");
                });
            }

However, I'm not able to grab anything w/ the querySelectorAll method - it's returning 0 length when sandwiched in Wizard Step tags but when in CodePen and without Telerik, it's returning "HI" in the console log when the corresponding button is clicked. Any insights into why this is happening? Thanks!

Wizard

answered on 04 Aug 2022

1 answer

399 views

Set different margin top in pages in grid pdf export

Hello,

I would like to ask how I could set different margin top in pages in grid pdf export.

I have a header which I need to be display only in the first page. But this leaves a lot of big blank in other pages,

this is what I have try so far in the page template script

#if(pageNum > 1)
           {#
                     
                document.getElementByClassName("k-pdf-export k-grid").style.marginTop = "3cm";
                    
           #}#

thank you in advance

Grid

answered on 02 Aug 2022

1 answer

348 views

Header and Cell alignments not as demo-like

Hi!

I'm on the Material Main theme. The Kendo controls are already cozy-sized, and the material theme adds too much whitespace everywhere.

I'm struggling with the columns and header text alignment. As per the image, I cannot get either these headers or the cells to align correctly, and there is too much padding margin on the left.

@(Html.Kendo().Grid(Model)
		.Name("gridLetters")
		.Columns(columns =>
		{
			columns.Bound(p => p.Id).Filterable(false).Sortable(false).Width(60)
			       .HeaderHtmlAttributes(new { @style = "k-text-center !k-justify-content-center" })
			       .HtmlAttributes(new { @style = "text-align: right" })
			       .ClientTemplate("<a href='" + Url.Action("View", "Letter", new { letterId = "#:Id#" }) + "'>#=Id#</i></a>");
			columns.Bound(p => p.Subject);
			columns.Bound(p => p.CompanyName).Title("Company");
			columns.Bound(p => p.BrandName).Title("Brand");
			columns.Bound(p => p.Location.Name).Title("Location");
			columns.Bound(p => p.LetterTypeId).Title("RL Type").Width(150)
			       .HtmlAttributes(new { style = "text-align:center" })
			       .HeaderHtmlAttributes(new { style = "text-align: center; justify-content: center" })
				   .ClientTemplate("<span class='#=LetterType.BadgeInfo#' title='#=LetterType.Name#'>#=LetterType.Nickname#</span>");
			columns.Bound(p => p.StatusId).Title("Status").Width(150)
			       .HtmlAttributes(new { style = "text-align:center" })
							.HeaderHtmlAttributes(new { style = "text-align: center; justify-content: center" })
				   .ClientTemplate("<span class='#=Status.BadgeInfo#' title='#=Status.Name#'>#=Status.Nickname#</span>");
			columns.Bound(p => p.Id).Title("Act").Width(90).Filterable(false)
			       .HtmlAttributes(new { style = "text-align:center" })
			       .HeaderHtmlAttributes(new { style = "text-align: center; justify-content: center" })
		           .ClientTemplate(
				        "#if(StatusId == 1){#" +
				        "	<a href='" + Url.Action("Create", "Letter", new { letterId = "#=Id#" }) + " ' title='Edit the RL'><i class='fa-duotone fa-pen-to-square'></i></a>" +
						"	&nbsp;&nbsp;<i class='fa-duotone fa-pipe'></i>&nbsp;&nbsp;" +
				        "	<a href='" + Url.Action("ActionQuick", "Letter", new { letterId = "#=Id#" }) + " ' title='Start the RL Approval flow'><i class='fa-duotone fa-play'></i></a>" +
				        "#} else {#" + "" + "# } #"
					);
		})
		.ToolBar(toolbar =>
		{
			toolbar.Excel();
			toolbar.Search();
		})
		.Excel(excel => excel
				.FileName($"DA CRL - My List Export - {DateTime.Now:yyyy-MM-dd}.xlsx")
				.Filterable(true)
				.ProxyURL(Url.Action("GridExcelExportSave", "Helper"))
		)
		.Sortable()
		.Navigatable()
		.Resizable(r => r.Columns(true))
		.Pageable(pageable => pageable
				.Refresh(true)
				.PageSizes(true)
				.ButtonCount(5))
		.Filterable()
		.Scrollable(s => s.Height("auto"))
		.ClientDetailTemplateId("detailTemplate")
		.Events(e => e.DataBound("onDataBound"))
		.DataSource(dataSource => dataSource
						.Ajax()
						.Sort(x => x.Add("Id").Descending())
						.PageSize(20)
						.ServerOperation(false)
		)
)

	<script>
		var gridLetters = $("#gridLetters");

        $(window).resize(function () {
            resizeGrid();
        });

        function onDataBound(e) {
            resizeGrid();
        }

        function resizeGrid() {
	        try {
		        if (gridLetters.options.scrollable !== true) {
			        gridLetters.setOptions({ scrollable: true });
		        }
	        } catch (e) {

	        }
	        $(".k-grid-content").css("height", $(window).height() - 310);
        }
    </script>

	<script>
		var gridLetters = $("#gridLetters");

        $(window).resize(function () {
            resizeGrid();
        });

        function onDataBound(e) {
            resizeGrid();
        }

        function resizeGrid() {
	        try {
		        if (gridLetters.options.scrollable !== true) {
			        gridLetters.setOptions({ scrollable: true });
		        }
	        } catch (e) {

	        }
	        $(".k-grid-content").css("height", $(window).height() - 310);
        }
    </script>

Grid

answered on 01 Aug 2022

2 answers

113 views

ColumnMenu events and placement

Hi there

I'm trying to add column menu to my grid but I need to do the following:

1) Add the three dots to the grid toolbar not to each column

2) I need once I click on the apply button to extend the functionality and run some js code, but I can't find any documentation for init, columnMenuOpen or any other event for ColumnMenu for .net core library.

Thanks

Grid

Popover

answered on 28 Jul 2022

1 answer

237 views

Add Sound to Notification Box

Hello,

is it possible to play a sound / beep / whatever when showing a notification box?

I haven't found anything in the API for ASP.NET Core.

Thanks,

Christine

Notification

answered on 28 Jul 2022

1 answer

258 views

Treeview broken styling with nested spans

Hello! I have been troubleshooting an issue with the way that the treeview places elements. It appears to only be happening with items that contain children (and thus have an expand arrow).

I am unsure what could be causing this, but the library seems to be putting a span with the k-icon and k-i-expand classes (which will show the expand arrow) and then nesting the rest of the treeview row inside of that span. When I look at the demos of the same version on your site, the spans are not nested. Also I noticed that the css class names are different, but that might be on purpose (or perhaps I am confused about something).

<!--  HTML OF TREEVIEW ROW WITH CHILDREN  -->
<li role="treeitem" class="k-item" data-uid="900b9f8a-e745-4d2f-9177-36f8f029d19a" aria-selected="false">
    <div class="k-mid">
        <span class="k-icon k-i-expand">
            <span class="k-checkbox-wrapper" role="presentation">...</span>
            <span class="k-in">...</span>
        </span>
    </div>
</li>

<!--  VERSUS HTML OF TREEVIEW ROW WITHOUT CHILDREN  -->
<li role="treeitem" class="k-item" data-uid="dfd4e997-b440-42dc-8780-061f00ed16d6" aria-selected="false">
    <div class="k-mid">
        <span class="k-checkbox-wrapper" role="presentation">...</span>
        <span class="k-in">...</span>
    </div>
</li>

Honestly, I am pretty stumped on this one.. as far as what could be causing this. I looked through the css classes in inspector and nothing stood out to me... I *AM* using a template though, but I don't see how it could be the issue. Here is the treeview definition as well as the template I am using:

<!-- GRID DEFINITION  -->
<div class="d-flex flex-row">
            @(Html.Kendo().TreeView()
                          .Name("TreeView")
                          .DataTextField("Name")
                          .Checkboxes(true)
                          .DragAndDrop(true)
                          .Events(events => events
                              .Select("treeview_OnSelect")
                              .Check("treeview_OnCheck")
                              .Drag("treeview_OnDrag")
                              .Drop("treeview_OnDrop"))
                          .TemplateId("treeview-template")
                          .DataSource(dataSource =>
                              dataSource.Read(read =>
                                  read.Action(Model.ReadAction, Model.Controller)))
            )
</div>

<!--  TEMPLATE  -->
<script id="treeview-template" type="text/kendo-ui-template">
    # var id = item.id; #
    # if (id.includes("group")) { #
    <i class="far fa-fw fa-folder"></i>
    # } else if (id.includes("category")) { #
    <i class="far fa-fw fa-sitemap"></i>
    # } else { #
    <i class="@Model.IconClass fa-fw"></i>
    # } #
    &nbsp;
    #: item.Name #
</script>

Any help or direction on this would be greatly appreciated.

Styling

TreeView

answered on 27 Jul 2022

1 answer

108 views

Code blocks within Wizard steps causes the stepper not to load

I'm running into a new issue with the UI for ASP.NET Core's Wizard in that if I add a code block, e.g., a @if statement or a @Localizer within a <wizard-step-content> tags, it will cause the stepper along the top not display. What are my options - I'll need the @if statements work in order to have certain information appear depending on what issue the user is submitting.

Wizard

answered on 27 Jul 2022

1 answer

149 views

Use section content for Splitter.Content() with RenderSection() .NET6

I'm working in a migration to MVC .NET6 from .NET Framework, so in the Layout we use the following

@Html.Kendo().Splitter().Name("Splitter").Panes(p => {
  p.Add().Content(RenderSection("Header", true).ToHtmlString());
  p.Add().Content(RenderSection("Content", true).ToHtmlString());
});

As you can see we are using RenderSection() to take the HTML defined in other view. For each page we have the following code

But in .NET6 the same RenderSection() renders the content of the section. (has other behaviour)

There is other way to get the HTML from the sections?

Version: Telerik.UI.for.AspNet.Core.2020.2.513

MVC

Splitter

answered on 26 Jul 2022

1 answer

258 views

Wizard TagHelper not working

Using Telerik UI for ASP.NET Core version 2021.2.511,

Some of the TagHelpers for the Wizard isn't working so I suspect I've set this project up incorrectly somehow. For what it's worth, the kendo-datepicker TagHelper works and renders correctly in the UI. However, the Wizard will not show up at all.

Here's what I've used, basically grabbed the code from the docs. The issue starts at the <wizard-step-form> tag, shows the following error: The wizard-step-form is not allowed by the parent <wizard-step> ... etc.

The HTML Helper variation does work, however, but I'd prefer to use the TagHelper.

<div class="demo-section wide" style="width: 700px">
    <kendo-wizard name="wizard" on-done="onDone">
        <wizard-steps>
            <wizard-step title="Start">
                <wizard-step-buttons>
                    <wizard-step-button name="next" text="Next"></wizard-step-button>
                </wizard-step-buttons>
                <wizard-step-content>
                    <div class="wizardContainer">
                        <div style="text-align:center">
                            <h2>Welcome to the Registration Form</h2>
                            <h2>for the monthly Telerik seminar</h2>
                        </div>
                    </div>
                </wizard-step-content>
            </wizard-step>
            <wizard-step title="User details">
                <wizard-step-buttons>
                    <wizard-step-button name="previous" text="Previous"></wizard-step-button>
                    <wizard-step-button name="done" text="Register"></wizard-step-button>
                </wizard-step-buttons>
                <wizard-step-form name="registrationForm" orientation="vertical">
                    <validatable validate-on-blur="true" />
                    <form-items>
                        <form-item field="FirstName" html-attributes='new Dictionary<string, object> { { "required", "required" } }'>
                            <item-label text="First Name:" />
                        </form-item>
                        <form-item field="LastName" html-attributes='new Dictionary<string, object> { { "required", "required" } }'>
                            <item-label text="Last Name:"  />
                        </form-item>
                        <form-item field="Email" html-attributes='new Dictionary<string, object> { { "required", "required" } }'>
                            <item-label text="Email:" />
                        </form-item>
                    </form-items>
                </wizard-step-form>
            </wizard-step>
        </wizard-steps>
    </kendo-wizard>
</div>

Wizard

answered on 26 Jul 2022