I"m trying to filter a grid that is bound to many fields including a few that are DateTime. My filter works great until I try to do one on a datetime type field then it errors out. What operator can I use on a datetime? Here's the error and the settings for the filter.

Message"The binary operator GreaterThanOrEqual is not defined for the types 'System.DateTime' and 'System.String'."string

$("#Grid").data("kendoGrid").dataSource.filter({
            logic: "or",
            filters: [
                {
                    field: "DateEntered",
                    operator: "gte",
                    value: searchValue
                },
                {
                    field: "DateEntered",
                    operator: "lte",
                    value: searchValue
                },

Thanks!

Craig

Hi,

Is Kendo UI works with asp .Net core 2.0 ? 

If yes, can anyone have any demo on this. As, I am trying to use Kendo UI  for my asp .net core 2.0 project and I am getting some issue there.

Hi

  For some unknown reason, the intellisense suddenly stops working.

  When i create a new asp.net core project using telerik's wizard, it is working ok.

  I am using VS2017 with asp.net core R2 2019.

Hi,

  I am using DataTables from DataTables in TabStrip.

  I figure i faced the same problem as mentioned here: datatable jquery - table header width not aligned with body width

  There was a solution mentioned in the blog that works for Bootstrap Tab:

   How can i do that for telerik TabStrip?

Here is my TabStrip in cshtml:

Here is the script:

Hi I have the code and result below, but Auto Complete show not fund any thing i missing or got it wrong here?

@(Html.Kendo().AutoComplete()
.Name("ceaSearch")
.HtmlAttributes(new { style = "width:100%" })
.DataTextField("salesperson_name")
.MinLength(1)
.DataSource(source =>{
    source.Read(read =>
    {
        read.Url("https://data.gov.sg/api/action/datastore_search")
        .Data("getCEAData");
    })
    .ServerFiltering(true)
    .Custom()
    .Schema(schema => schema
        .Data("records")
        .Type("json")
        .Model(model =>
        {
            model.Id("salesperson_nam");
            model.Field("registration_no", typeof(string));
            model.Field("estate_agent_name", typeof(string));
            model.Field("estate_agent_license_no", typeof(string));
        })
    );
}).Template("<span>#: records.salesperson_name#</span>"))

function getCEAData() {

    var value = $("#ceaSearch").data("kendoAutoComplete").value();
    return {
        resource_id: 'a41ce851-728e-4d65-8dc5-e0515a01ff31', // the resource id
        q: value
    };
}

The API returned data below. but Autocomplate show not found

{"help": "https://data.gov.sg/api/3/action/help_show?name=datastore_search", "success": true, "result": {"resource_id": "a41ce851-728e-4d65-8dc5-e0515a01ff31", "fields": [{"type": "int4", "id": "_id"}, {"type": "text", "id": "salesperson_name"}, {"type": "text", "id": "registration_no"}, {"type": "text", "id": "registration_start_date"}, {"type": "text", "id": "registration_end_date"}, {"type": "text", "id": "estate_agent_name"}, {"type": "text", "id": "estate_agent_license_no"}, {"type": "int8", "id": "_full_count"}, {"type": "float4", "id": "rank"}], "q": "merita", "records": [{"registration_end_date": "2019-12-31", "estate_agent_license_no": "L3008536D", "salesperson_name": "MERITA LOUISE TIN GUEK PING (DENG YUEPING) (MERITA LOUISE TIN)", "registration_no": "R000662B", "rank": 0.0706241, "_full_count": "2", "registration_start_date": "2015-11-03", "estate_agent_name": "LANDPLUS PROPERTY NETWORK PTE LTD", "_id": 30808}, {"registration_end_date": "2019-12-31", "estate_agent_license_no": "L3008536D", "salesperson_name": "MERITA LOUISE TIN GUEK PING (DENG YUEPING) (MERITA LOUISE TIN)", "registration_no": "R000662B", "rank": 0.0706241, "_full_count": "2", "registration_start_date": "2015-11-03", "estate_agent_name": "LANDPLUS PROPERTY NETWORK PTE LTD", "_id": 32886}], "_links": {"start": "/api/action/datastore_search?q=merita&resource_id=a41ce851-728e-4d65-8dc5-e0515a01ff31", "next": "/api/action/datastore_search?q=merita&offset=100&resource_id=a41ce851-728e-4d65-8dc5-e0515a01ff31"}, "total": 2}}

Telerik UI for ASP.NET Core not working on Razor page Core 2.0

To replicate:

Create New Project -> .NET Core -> ASP.NET Core Web Application

Select -> Web Application (ASP.NET Core 2.0)

Added services.AddKendo(); to Startup.cs

Added @addTagHelper, etc .  to _ViewImports.cshtml

Added link and script to _Layout.cshtml

Added @using Kendo.Mvc.UI and @(Html.Kendo().DatePicker().Name("my-picker")) to target page.

Encountered error showed in title. 

I am using the example from: https://demos.telerik.com/aspnet-core/pdfviewer/index

No matter what PDF file I put in the code I get the message "PDF file fails to process".  If I use the dialog on the PDF Viewer and go to the exact same PDF file it opens correctly.  Any idea what I am missing?

From Layout.cshtml:

<head>
    <meta charset="utf-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>@ViewData["Title"] - TestPDFApp</title>
    <script src="~/js/site.js"></script>
    <script src="https://kendo.cdn.telerik.com/2019.2.619/js/jquery.min.js"></script>
    <script src="https://kendo.cdn.telerik.com/2019.2.619/js/jszip.min.js"></script>
    <script src="https://kendo.cdn.telerik.com/2019.2.619/js/kendo.all.min.js"></script>
    <script src="https://kendo.cdn.telerik.com/2019.2.619/js/kendo.aspnetmvc.min.js"></script>
    <script src="~/lib/bootstrap/dist/js/bootstrap.js"></script>
    <link rel="stylesheet" href="~/lib/bootstrap/dist/css/bootstrap.css" />
    <link rel="stylesheet" href="~/lib/kendo-ui/styles/kendo.common.min.css" />
    <link rel="stylesheet" href="~/lib/kendo-ui/styles/kendo.rtl.min.css" />
    <link rel="stylesheet" href="~/lib/kendo-ui/styles/kendo.bootstrap.min.css" />
    <link href="~/css/site.css" rel="stylesheet" />
</head>

From my View:

<script src="https://cdnjs.cloudflare.com/ajax/libs/pdf.js/2.2.2/pdf.js"></script>
<script>
    window.pdfjsLib.GlobalWorkerOptions.workerSrc = 'https://cdnjs.cloudflare.com/ajax/libs/pdf.js/2.2.2/pdf.worker.js';
</script>
<div id="example">
    @(Html.Kendo().PDFViewer().Name("pdfviewer")
                //.PdfjsProcessing(pdf => pdf.File(Url.Content("~/wwwroot/PDF/Issue Definitions.pdf")))
                .PdfjsProcessing(pdf => pdf.File(Url.Content("https://demos.telerik.com/kendo-ui/content/web/pdfViewer/sample.pdf")))
                .Height(1200)
    )
</div>
<style>
    html body #pdfviewer {
        width: 100% !important;
    }
</style>

Is there a way to make a column cell in the grid editable when the user clicks the create button on the toolbar but to make the same column cell read only when the user tries to edit the record?  I want the user to be able to add new records but not be able to change the values in a specific field when editing the row.

I can use the beforeEdit function to determine if it is in new or update state but not sure what to do from here.

function beforeEdit(e) {
        if (!e.model.isNew()) {
            alert("Edit");
        }
        else {
            alert("New");
        }
    }

I am using Visual Studio 2017, Net Core 2.1 Telerik 2019.2.619

Thanks.

Rich

I have an angular grid which uses a GridDataResult posting back to an API controller in my .netcore project with a DataSourceRequest parameter.

The first column of my grid has a Guid, declared in a model both server and client side.

When I try filter on this column the server throws an exception:

"Provided expression should have string type".

I have searched both this forum and the MVC forum to try apply a server-side request filter to no avail.

How should this be handled?