Questions on UI for ASP.NET Core Forum

3 answers

2.1K+ views

Hey,

I am trying to choose a different template for a popup editor depending on whether a new entry is inserted or an already existing one is modified. I am aware that I probably have to subscribe to the "beforeEdit" event of the grid and act depending on whether e.model.isNew() returns true or false.

However, I was not able to set a different template based on this decision yet. Could you please outline what the cleanest way for doing this would be?

So far my code looks similar to this:

@(Html.Kendo().Grid<Data.Promotion>()

.Name("promotionGrid")

.Columns(c =>

{

...

c.Command(cmd => cmd.Edit()).Width(120);

c.Command(cmd => cmd.Destroy()).Width(120);

})

.Events(e =>

{

e.BeforeEdit("beforeEdit");

e.Edit("edit");

})

.DataSource(c =>

{

c.Ajax()

.Read(o => o.Url("CodeManagement?handler=Read").Data("forgeryToken"))

...

.Model(m =>

{

m.Id("PromotionId");

...

});

})

.ToolBar(c =>

{

c.Create();

})

.Editable(c =>

{

c.Mode(GridEditMode.PopUp);

c.TemplateName("Promotion");  // using a static template right now, we want to change that

})

)

Moreover, in the Edit-template, I have to constrain a DatePicker based on some model properties. However, the Model field is not set which leads to a NullReferenceException. Is there any way to set the Model field of the template to the entry that is currently being edited/created?

Thank you.

Grid

answered on 21 Aug 2020

1 answer

1.6K+ views

kendo.mvc.dll

How do I get a copy of Kendo.mvc.dll for Progress® Telerik® UI for ASP.NET Core Version 2020.2.617?

Installer and VS Extensions

answered on 21 Aug 2020

7 answers

199 views

Gain access to DataValueField Mvc method code behind how

I am about to plan a purchase with a new customer again for the suite and I am using the latest demo. I was trying to get the value from the form that I placed my control in. I need to gain access in this field .DataValueField("Id") which would be bound to the form when its posted but when I access tag item its null

<form asp-action="LinkToCase" asp-controller="MISObjects">

<div class="row">

<div class="col-md-12">

<div class="card card-success">

<div class="card-header" style="background-color:#1e3f5a;color:white">

<h3 class="card-title">Search and Tag</h3>

</div>

<div class="card-body">

<div class="col-md-12">

<div class="input-group">

<select id="searchOptions" name="searchOptions" style="background-color: #1e3f5a; color: white; width: 140px; height: 45px">

<option selected value="1">Poi</option>

<option selected value="1">Vessel</option>

</select>

@(Html.Kendo().MultiColumnComboBox()

.Name("tagItem")

.DataTextField("name")

.DataValueField("Id")

.Filter("contains")

.FilterFields(new string[] { "name", "ContactTitle", "CompanyName", "Country" })

.Columns(columns =>

{

columns.Add().Field("name").Title("Contact Name").Width("200px");

columns.Add().Field("dob").Title("Date Of Brith").Width("200px");

})

.FooterTemplate("Total #: instance.dataSource.total() # items found")

.HtmlAttributes(new { style = "width:80%;" })

.Height(400)

.DataSource(source => source

.Custom()

.Transport(transport => transport

.Read(read =>

{

read.Action("SearchQuery", "MISObjects")

.Data("onAdditionalData");

}))

)

<button class="btn-primary" value="Link To Case" style=" background-color:#1e3f5a;color:white">Link To Case</button>

</div>

<script>

function onAdditionalData() {

return {

text: $("#customers").val()

};

}

</script>

public IActionResult LinkToCase(int tagItem, string sesearchOptionsr) {

Int32.TryParse(TempData.Peek("CaseId").ToString(), out int resultCaseId);

POI newPoi = new POI();

newPoi = _context.Pois.SingleOrDefault(w => w.Id == tagItem);

newPoi.MISObjectId = resultCaseId;

_context.Pois.Add(newPoi);

_toast.AddSuccessToastMessage(

$"You have linked {newPoi.FirstName} {newPoi.LastName} to case {resultCaseId:d8}");

return RedirectToAction("Edit", new { id = resultCaseId });

}

MultiColumnComboBox

answered on 20 Aug 2020

8 answers

230 views

Splitter not activating

I have a grid with a details panel.

The details panel has the following template:

<script id="SuggestionGridDetailsTemplate" type="text/kendo-tmpl">

@(Html.Kendo().Splitter()

.Name("sug-splitter-#=SuggestionID#")

.HtmlAttributes(new { style = "height: 500px;" })

.Orientation(SplitterOrientation.Vertical)

.Panes(verticalPanes =>

{

verticalPanes.Add()

.HtmlAttributes(new { id = "sug-top-#=SuggestionID#" })

.Collapsible(false)

.Size("#if(Status == 0){#54px#}else{#100px#}#")

.Content(@<div class="container">

<div class="row">

#if(Status == 0){#

<div class="col-2 offset-10 float-right">

@(Html.Kendo().Button()

.Name("DeleteSuggestionBtn-#=SuggestionID#")

.HtmlAttributes(new { type = "button", @class = "k-btn-danger mt-2 float-right" })

.Events(e => e.Click("DeleteSuggestionBtnClick"))

.Content("Delete").ToClientTemplate())

</div>

#} else {#

<div class="col-4">

<label>Actioned by:</label>

<p>#=ActionedBy#</p>

</div>

<div class="col-8">

<label>Comments:</label>

<p>#=Comments#</p>

</div>

#}#

</div>

</div>);

verticalPanes.Add()

.HtmlAttributes(new { id = "sug-bottom-#=SuggestionID#", @class="iv-pane-no-overflow" })

.Resizable(false)

.Collapsible(false);

}).ToClientTemplate()

)

</script>

The grid has a DetailExpand event that will populate the bottom pane of the "sug-splitter" with a partial view from the controller using AJAX. The content all loads, but the script generated to make the splitter look like a splitter does not fire. If I copy the jQuery call into the console and run it, the splitter turns into what I am expecting.

<script

>kendo.syncReady(function(){jQuery("#vertical-18b41377-7c46-4e83-b72c-84e9a6589135").kendoSplitter({"panes":[{"collapsible":false,"scrollable":false},{"collapsible":false,"resizable":false,"size":"100px"}],"orientation":"horizontal"});});</

script>

I have loaded content with a splitter in it previously, although this was into a window, not a grid details area.

What can I do to get the splitter to load and not just be a bunch of divs on page?

Splitter

answered on 20 Aug 2020

4 answers

1.0K+ views

Grid not displaying any records in .NET Core 3.1

I've ported my app from .NET Framework MVC to .NET Core 3.1. The Kendo Grid displays OK and fetches data from the controller successfully (no javascript console errors). However despite the fact that 10 records are returned, the grid isn't actually rendering any rows. What could I be doing wrong?

Controller:

public ActionResult FetchUsers([DataSourceRequest] DataSourceRequest request)

{

var cardivationApi = GetCardivationApi();

var data = cardivationApi.GetUsersFiltered(request);

return new JsonResult(data);

}

View:

@(Html.Kendo().Grid<UserDtoV1>().Name("grid")

.Columns(columns =>

{

columns.Bound(p => p.FirstName).Title(DbRes.T("FirstName", "Labels"))

.Filterable(t => t.Cell(cell => cell.Operator("startswith").SuggestionOperator(FilterType.StartsWith).Delay(9999))

.Operators(o => o.ForString(d => d.Clear().StartsWith(DbRes.T("StartsWith", "Labels")).Contains(DbRes.T("Contains", "Labels"))))

.Extra(false));

[ cut for brevity ]

.Pageable(p => p.PageSizes(true).PageSizes(new[] { 10, 20, 50, 100 }).Messages(t => t.ItemsPerPage(DbRes.T("ItemsPerPage", "Labels"))))

.Filterable(ftb => ftb.Mode(GridFilterMode.Menu))

.HtmlAttributes(new { style = "min-height:500px;" })

.ProxyURL(Url.Action("ExcelExport", "Users"))

)

.DataSource(dataSource => dataSource

.Ajax()

.PageSize(10)

.ServerOperation(true)

.Read(read => read.Action("FetchUsers", "Users"))

.Model(model => model.Id(t => t.UserID))

)

Thanks,

Nick

General Discussions

answered on 20 Aug 2020

2 answers

163 views

Tag Helper - Expanded="false"

I am trying to put in a panel bar that is collapsed by default. I took the demo and changed the expanded value to false.

<kendo-panelbar name="project">

<items>

<panelbar-item text="Storage" expanded="false">

<items>

<panelbar-item text="Wall Shelving"></panelbar-item>

<panelbar-item text="Floor Shelving"></panelbar-item>

<panelbar-item text="Kids Storag"></panelbar-item>

</items>

</panelbar-item>

</items>

</kendo-panelbar>

The panel bar items are collapsed but the icon is set to "k-i-arrow-60-up" so it looks like it can still be collapsed.

I am also wanting to put content other than <panelbar-item> in there, so I was going to use the <content> tag instead f the <items> tag an then put a treeview in there. When I use the <content> tag, the content is always show, so I must be using this incorrectly. I know I can do it with the html helpers, but I like how the tag helpers look. Can I still do this with the tag helpers?

PanelBar

answered on 19 Aug 2020

1 answer

265 views

TreeView Checkbox problem

Hi everybody

I have a problem with kendo treeview checkboxes
i populated treeview with remote data, it binds correctly. I used "checked" property to send checked checkboxes to view, it works fine too.
i use 2 different method for sending checked node IDs to controller but does not work properly.
method1:
use java script to read nodes recursively and gather IDs then store in hidden field and send to controller but most of the times some nodes doesn't illustrate the check items thoroughly. in other words, I lose near half of checkboxes randomly.

method2:
using checkbox name and template and send checkboxes directly to the controller got same issue.

what can i do for this issue??
thanks

TreeView

answered on 19 Aug 2020

2 answers

720 views

Add All to Grid Pager's Page Size Dropdown Via Scripting

I am attempting to add an “All” option to the page size dropdown in a grid’s pagination so that the grid can display all items if needed.

Prior to updating to version R2 2020 we called a script that checked the page size <select> to see if “All” was present as an option. If not it would insert the text and value for the option. It was based on the method described here: Set All Page Size in Grid for ASP.NET Core. This no longer seems to work since the Pager component was updated. What would be the R2 2020 friendly version of that solution? Because calling that scripting breaks the grid’s Pager now and the buttons appear disabled with no change to the page size dropdown.

Grid