Questions on UI for ASP.NET Core Forum

1 answer

175 views

Kendo UI Date Range Picker - Calendar won't close after updating to version 2023.3.1114

Hi there,

After updating to version 2023.3.1114, I found that the calendar at Kendo UI Date Range Picker won't closed automatically after selecting the start and end date. This happened particularly when I change the max date inside the "Change" Event.

$("#date-range-picker").data("kendoDateRangePicker").max(new Date(2024, 1, 14));

I was able to replicate the issue at Kendo UI JQuery dojo: https://dojo.telerik.com/UfOcUZaY/3

However the issue can't be replicated at the following REPL: https://netcorerepl.telerik.com/?_gl=1*12uzyp6*_ga*ODY4MDY0MTk4LjE3MDY0NzY2ODc.*_ga_9JSNBCSF54*MTcwNjQ3NjY4Ni4xLjEuMTcwNjQ3NzM2NC44LjAuMA..*_gcl_au*MTM5NDI2ODE3Ny4xNzA2NDc2Njg3

Turned out the page still using version 2023.3.1010.

Is this change intended?

Is there a workaround? I have tried to close the calendar manually after checking if the range.start and range.end available. But didn't quite work well. It may close the calendar even if I only select the start date.

Appreciate your support. Thank you.

Calendar

DateRangePicker

Popover

answered on 31 Jan 2024

1 answer

106 views

Prevent PDFViewer from saving anything local

I would like to ensure that no trace of the PDF is saved to the local machine in any kind of cache etc.
Is this how the PDFViewer works?

General Discussions

PDFViewer

answered on 30 Jan 2024

1 answer

71 views

Serverfiltering is not sending text after selecting an item from MultiColumnComboBox component

Hi,

on your demo page for ASP.NET Core MultiColumnComboBox Server Filtering when I enter Ali, then a request is sent to the server with querystring text=Ali and two records are shown.

When I click on one of the records and then expand the combox box again using the down arrow, then another request is send to the server but with empty text, so all records are returned.

This is problem when server contains a lot of records.

Is there a way how to send to the server the text shown in the input field? I need it to show just the one record like if I just entered the text in the field manually.

Regards,

Petr

MultiColumnComboBox

answered on 23 Jan 2024

1 answer

201 views

Kendo Grid using Signal R

im attempting to have a grid update based on records in a DB

i have a log4net service sending messages to a DB

i keep getting an error

Uncaught (in promise) Objectmessage: "The message port closed before a response was received."[[Prototype]]: Object
BatchInsights:59 Uncaught ReferenceError: hub is not defined
at HTMLDocument.<anonymous> (BatchInsights:59:1560)
at i (jquery.min.js:2:27466)
at Object.fireWith [as resolveWith] (jquery.min.js:2:28230)
at Function.ready (jquery.min.js:2:30023)
at HTMLDocument.K (jquery.min.js:2:30385)
jquery.simulate.js:331 Uncaught ReferenceError: jQuery is not defined
at jquery.simulate.js:331:5

I followed the demo and still get this error ...here is the view

@model IEnumerable<FMM.Core.DataModel.Pharmpix.LogModel>
@using Kendo.Mvc.UI;
@using Kendo.Mvc.Extensions;
@using FMM.Core.DataModel.Pharmpix;

@{
ViewData["Title"] = $"Batch Insights Logs";
Layout = "~/Views/Shared/_Layout.cshtml";

}

<div>
@(Html.Kendo().Notification()
.Name("notification")
.Width("100%")
.Position(position => position
.Top(50)
.Left(50))
)

@(Html.Kendo().Grid(Model)
.Name("grid")
.Columns(columns =>
{
columns.Bound(p => p.Id);
columns.Bound(p => p.Logger).Width(150);
columns.Bound(p => p.Message).Width(120).Filterable(false);

})
.ToolBar(toolbar =>
{
toolbar.Search();
})
.Groupable()
.Pageable()
.Editable(editable => editable.Mode(GridEditMode.InLine))
.Scrollable()
.HtmlAttributes(new { style = "height:100%;" })
.DataSource(dataSource => dataSource
.SignalR()
.AutoSync(true)
.PageSize(20)
.Transport(tr => tr
.Promise("hubStart")
.Hub("hub")
.Client(c => c
.Read("read")
)
.Server(s => s
.Read("read")
))
.Schema(schema => schema
.Model(model =>
{
model.Id("Id");
model.Field("Logger", typeof(string)).Editable(false);
model.Field("Message", typeof(string));

})
)
))

</div>

<script src="https://unpkg.com/@@aspnet/signalr@1.0.0/dist/browser/signalr.js"></script>
<script>
$(document).ready(function () {
var hubUrl = "logHub";
var hub = new signalR.HubConnectionBuilder()
.withUrl(hubUrl, {
transport: signalR.HttpTransportType.LongPolling
})
.build();

var hubStart = hub.start();
});

function onPush(e) {
var notification = $("#notification").data("kendoNotification");
notification.success(e.type);
}
</script>

here is the hub

using FMM.Core.DataModel.Pharmpix;
using FMM.Core.Interfaces;
using FMM.DataAccess;
using Microsoft.AspNetCore.SignalR;
using Microsoft.Extensions.Configuration;
using System;
using System.Collections.Generic;
using System.Linq;

namespace Financial_Management_Module.Hubs
{
public class LogHub : Hub
{
private readonly PharmpixDbContext _context;
private readonly IConfiguration _configuration;
private readonly ILogging _log;

public LogHub(PharmpixDbContext context, IConfiguration configuration, ILogging log)
{
_context = context;
_configuration = configuration;
_log = log;

}

public override System.Threading.Tasks.Task OnConnectedAsync()
{
Groups.AddToGroupAsync(Context.ConnectionId, GetGroupName());
return base.OnConnectedAsync();
}

public override System.Threading.Tasks.Task OnDisconnectedAsync(Exception e)
{
Groups.RemoveFromGroupAsync(Context.ConnectionId, GetGroupName());
return base.OnDisconnectedAsync(e);
}

public IEnumerable<LogModel> Read()
{
var result = _context.LogModel.Select(i => new LogModel
{
Id = i.Id,
Logger = i.Logger,
Message = i.Message
}

).ToList();

return result;

}

public string GetGroupName()
{
return GetRemoteIpAddress();
}

public string GetRemoteIpAddress()
{
return Context.GetHttpContext()?.Connection.RemoteIpAddress.ToString();
}

}
}

here is the log hub

using FMM.Core.DataModel.Pharmpix;
using FMM.Core.Interfaces;
using FMM.DataAccess;
using Microsoft.AspNetCore.SignalR;
using Microsoft.Extensions.Configuration;
using System;
using System.Collections.Generic;
using System.Linq;

namespace Financial_Management_Module.Hubs
{
public class LogHub : Hub
{
private readonly PharmpixDbContext _context;
private readonly IConfiguration _configuration;
private readonly ILogging _log;

public LogHub(PharmpixDbContext context, IConfiguration configuration, ILogging log)
{
_context = context;
_configuration = configuration;
_log = log;

}

public override System.Threading.Tasks.Task OnConnectedAsync()
{
Groups.AddToGroupAsync(Context.ConnectionId, GetGroupName());
return base.OnConnectedAsync();
}

public override System.Threading.Tasks.Task OnDisconnectedAsync(Exception e)
{
Groups.RemoveFromGroupAsync(Context.ConnectionId, GetGroupName());
return base.OnDisconnectedAsync(e);
}

public IEnumerable<LogModel> Read()
{
var result = _context.LogModel.Select(i => new LogModel
{
Id = i.Id,
Logger = i.Logger,
Message = i.Message
}

).ToList();

return result;

}

public string GetGroupName()
{
return GetRemoteIpAddress();
}

public string GetRemoteIpAddress()
{
return Context.GetHttpContext()?.Connection.RemoteIpAddress.ToString();
}

}
}

the code gets called if i comment out the "signal" stuff but when new entries are inserted it doesnt up date the the grid any help is appreciated!

Grid

answered on 17 Jan 2024

1 answer

150 views

Issue with ASP.NET Core Upload Asynchronous Upload - Save-Url doesnt see handler on code [Code Behind] ( iam using Razor page)

Razor code-behind method: I made the razor method as simple as possible, just to see if we could get in there / or hit onpostUploadFile
public async Task<ActionResult> OnPostUploadFile(IEnumerable<IFormFile> files, string metaData)
{
AllowedExtensions = new string[] { "fpd", "pdf" };

return Page();
}

Razor page :

@addTagHelper *, Kendo.Mvc
<div>
    <div class="demo-section">
        <kendo-upload name="files">
            <async auto-upload="true" save-url="@Url.Action("Upload","UploadFile")" chunk-size="11000" />
            <validation max-file-size="20000000" />
        </kendo-upload>
    </div>
</div>

The issue is i am not able to hit the hander from the razor page when i pass the url to <async save-url="">, Despite many efforts, the handler specified in the save-url attribute doesn't seem to be hit and returns 404.

Not Working:

1. save-url: "/Upload/UploadFile",

2. save-url="./Upload?handler=UploadFile"

I also found Forum where it discussed the same problem but that didn't help us :https://www.telerik.com/forums/upload-using-tag-helpers

Upload

answered on 17 Jan 2024

1 answer

343 views

Conditional Form Validation

Hello,

I'm looking to see if its possible to have the validation on one item in a form be dependent on another inputs selection.

.
.
.
        @(Html.Kendo().Form<EquipmentViewModel>()
            .Name("EquipmentForm")
            .Layout("grid")
            .Items(items =>
            {
                items.AddGroup()
                    .Label("Registration Form")
                    .Items(i =>
                    {
                        i.Add()
                            .Field(f => f.EquipmentType)
                            .Label(l => l.Text("Equipment Type"))
                            .Editor(e =>
                            {
                                e.DropDownList()
                                    .DataTextField("ShortName")
                                    .DataValueField("EquipmentTypeID")
                                    .OptionLabel("Select")
                                    .DataSource(source =>
                                    {
                                        source
                                            .ServerFiltering(true)
                                            .Read(read => { read.Url("/Equipment/Index?handler=EquipmentTypesByEquipmentClassID").Data("EquipmentClassData"); });
                                    })
                                    .Enable(isControlEnabled)
                                    .Events(e => { e.Change("OnChangeEquipmentTypeChange").DataBound("OnChangeEquipmentTypeChange"); })
                                    .CascadeFrom("EquipmentClass");
                            });
                        i.Add()
                            .Field(f => f.EquipmentDesign)
                            .Label(l => l.Text("Equipment Design"))
                            .Editor(e =>
                            {
                                e.DropDownList()
                                    .DataTextField("ShortName")
                                    .DataValueField("EquipmentDesignID")
                                    .OptionLabel("Select")
                                    .DataSource(source =>
                                    {
                                        source
                                            .ServerFiltering(true)
                                            .Read(read => { read.Url("/Equipment/Index?handler=EquipmentDesignByEquipmentTypeID").Data("EquipmentTypeData"); });
                                    })
                                    .CascadeFrom("EquipmentType")
                                    .Enable(false)
                                    .Events(e => { e.Change("OnChangeEquipmentDesignChange").DataBound("OnChangeEquipmentDesignChange"); });
                            });
.
.
.

This scenario loads EquipmentDesigns based on the EquipmentType the user has selected. I would like EquipmentDesigns to be required ONLY if the selected equipment type has equipment designs. In other words, only when the call to get the EquipmentDesigns actually returns data.

DropDownList

Form

answered on 16 Jan 2024

1 answer

76 views

Kendo Grid DetailTemplate Setting Error

excute me, when i use kendo grid detailtemplate feature, i have some trouble. how can i fix it？

my source：

<div class="panel-collapse collapse show" id="collapse1" aria-expanded="true">
@(
Html.Kendo().Grid(Model.UserRoleList.Value)
.Name("gridRoles")
.Scrollable()
.Columns(columns =>
{
columns.Bound(c => c.RoleName).Width(130);
})
.Height(250)
.DataSource(d => d.Custom()
.Type("aspnetmvc-ajax")
.Transport(t => t.Read(r => r.Url($"{_config.Value.AuthSettings?.ApplicationName ?? ""}/SystemManagement/UserPermission/View?handler=Paged&userId={Model.UserInfo.UserId}")))
.Batch(true)
.Schema(s => s.Model(
m => {
m.Id(p => p.RoleCode);
}
).Data("Data"))
)
.ClientDetailTemplateId("templateGrp")
.Deferred()
)

<script id="templateGrp" type="text/x-kendo-template">
<div>RoleCode: 123</div>
</script>

<script nonce="@_config.Value.AppSettings.CspNonce">
@Html.Kendo().DeferredScripts(false);
</script>

and feedback error：

Error: Invalid template:'
<div>RoleCode: 123<//div>
' Generated code:'var $kendoOutput, $kendoHtmlEncode = kendo.htmlEncode;with(data){$kendoOutput='\n <div>RoleCode: 123<//div>\n ';}return $kendoOutput;'

Grid

answered on 15 Jan 2024

2 answers

149 views

NumericTextBoxFor showing incorrect value when using culture pt-BR

Hi,

Looks like there is some kind of issue when trying to use the .NET Core wrapper for NumericTextBoxFor while using the culture pt-BR.

The values in the text field gets incorrect if the value has a decimal.

For example a double 1234.56 becomes 123,456.00 but the expected result is 1.234,56

This happens when the kendo.culture().numberFormat[","] is a "." (dot).

Here is an example of the error:
https://netcorerepl.telerik.com/weavadPV01xSQZX716

I can also reproduce the error with Kendo UI jQuery, If the html input tag has an intital value, then it becomes like the example above.
https://dojo.telerik.com/@douglas.nordfeldt@nefab.com/ejEhecIV/2
https://dojo.telerik.com/@douglas.nordfeldt@nefab.com/ogiVoMAZ/5

Managed in my examples to do a work around until this has been fixed.

NumericTextBox

answered on 10 Jan 2024

1 answer

142 views

Change Default Chart Font

I have a column chart that has a default font of Arial. Is it possible to change this to the Inter font in one place or does the font have to be set for each individual label (e.g. chart title, axis title, axis label, legend, tooltip, etc.)?

Thanks,

Tim

Chart

answered on 09 Jan 2024

1 answer

101 views

ExpressionBuilder But For Sorting

My solution layout follows this:

Data - EF entities and DB Context
Services - Service objects that interact with the database (references the Data project directly)
Web - Front end (controllers and views) that use the Services project to push/pull data and reflect it back to the user

I recently discovered the ExpressionBuilder to handle grid filtering and convert it to LINQ to use in my Service objects to (efficiently) query the database (pushes the filter down to the DB query) so only a limited number of records are returned (thus, loaded into memory) instead of loading all records and then filtering them in memory.

My question, is there a similar object for Sorting functionality? So it can convert my Grid Sort (from the DataSourceRequest object) into a LINQ OrderBy expression and apply it against my entity type so it can be passed into the DB query? Or am I stuck writing my own?

Grid

answered on 03 Jan 2024