Questions on UI for ASP.NET Core Forum

1 answer

814 views

How to set PageSize with GridPageableSettingsBuilder

Hi,

In documentation of Kendo UI for jQuery I found a property that allows to easily set page size of a grid: https://docs.telerik.com/kendo-ui/api/javascript/ui/grid/configuration/pageable.pagesize

However, I use Kendo for ASP.NET Core, and here the PageSize property is missing: https://docs.telerik.com/aspnet-core/api/Kendo.Mvc.UI.Fluent/GridPageableSettingsBuilder

I know I can set the size on DataSource object, however I would like to have a single reusable piece of code for setting the options and current size of paging. Is the page size option hidden somewhere in GridPageableSettingsBuilder? If it is not there are there any plans to add it?

Best regards,
Kazimierz

Grid

Pager

answered on 23 Sep 2021

1 answer

131 views

Menu Item - show which one is selected with Material v2 Theme?

Hi,

I am using an AppBar and have a menu added to that which works just fine.

The only issue is knowing which item on the menu is selected, is there any way to do this without changing loads of the theme css?

Ideally I want the usual bottom border turned to a solid colour effect when selected.

Thanks,

Zack

Menu

answered on 22 Sep 2021

0 answers

197 views

Can you attach a PopOver to an img tag?

Hello,

I have a need to have a popover appear when hovering/clicking on an image. My first attempts to get this to work has been unsuccessful. With both using an img tag, and an img wrapped in a span, I've not been able to get the popover to display. There aren't any console error messages to speak of. Wondering whether I'm approaching this wrong, and whether there's a way to make this work for me.

I've got the image defined as:

<img id="Instructions_Image" src="@Url.Content("~/Instructions_Image.png")" />

And the popover is defined at the top of the view as

@(Html.Kendo().Popover()
        .For("Instructions_Image")
        .Position(PopoverPosition.Center)
        .ShowOn(PopoverShowOn.MouseEnter)
        .Header("More Information:")
        .Body("Information content")
        .Animation(animation =>
        {
            animation.Open(op => op.Zoom(ZoomDirection.In).Duration(5));
            animation.Close(cl => cl.Zoom(ZoomDirection.Out).Duration(5));
        })
        .Width(400)
        .Height(200)
)

Popover

asked on 21 Sep 2021

1 answer

462 views

How to add only a "cancel changes" button with incell editing and external save for detail grid

If a user adds a row but then wants to cancel it, I am trying to figure out how to add this functionality. The "cancel changes" button built into kendo is tied to toolbar.Save() which I am not using (we are saving changes in batch with a custom button).

@(Html.Kendo().Grid<x.Models.xModel>()
                                     .Name("xGrid_#=PONum#_#=lineNum#") 
                                      .Columns(columns =>
                                      {
                                          columns.Bound(p => p.comment).Title("Comment").Width(50).HtmlAttributes(new { @maxlength = "1000"});
                                          columns.Bound(p => p.updatedBy).Title("Updated By").Width(15).Editable("readOnlyCol");
                                          columns.Bound(p => p.lastUpdated).Title("Last Updated").Width(15).Format("{0:MM/dd/yyyy}").Editable("readOnlyCol");
                                      })
                                      .ToolBar(toolbar => {
                                          toolbar.Create();
                                      })
                                      .Editable(editable => editable.Mode(GridEditMode.InCell))
                                      .Selectable(selectable => selectable
                                        .Mode(GridSelectionMode.Single))
                                      .Events(ev => ev.Change("onChange"))
                                      .DataSource(dataSource => dataSource
                                        .Ajax()
                                        .Read(read => read.Action("GetX", "X", new { LineNbr = "#=lineNum#", purchaseOrderNbr = "#=PONum#" }).Data("GetFacilityCode"))
                                        .Sort(sort => sort.Add("lastUpdated").Descending())
                                        .PageSize(10)
                                        )
                                        .Sortable()
                                        .Pageable()
                                        .Width(500)
                                        .ToClientTemplate())

Editor

Grid

answered on 21 Sep 2021

1 answer

559 views

How to set MaxLength of input in child grid (.net core)?

Hello, I am looking to limit the length of "Comment" to 1000 characters. Adding custom style via HtmlAttributes does not apply it to the input attributes and I am unsure how. Any insight would be great.

                                    @(Html.Kendo().Grid<SomeUI.Areas.Models.SomeCommentsModel>()
                                     .Name("SomeCommentsGrid_#=PONum#_#=lineNum#") 
                                      .Columns(columns =>
                                      {
                                          columns.Bound(p => p.comment).Title("Comment").Width(100);
                                          columns.Bound(p => p.updatedBy).Title("Updated By").Width(15).Editable("readOnlyCol");
                                          columns.Bound(p => p.lastUpdated).Title("Last Updated").Width(25).Format("{0:MM/dd/yyyy}").Editable("readOnlyCol");
                                      })
                                      .ToolBar(toolbar => {
                                          toolbar.Create();
                                          
                                      })
                                      .Editable(editable => editable.Mode(GridEditMode.InCell))
                                      .Selectable(selectable => selectable
                                        .Mode(GridSelectionMode.Single))
                                      .Events(ev => ev.Change("onChange"))
                                      .DataSource(dataSource => dataSource
                                        .Ajax()
                                        .Read(read => read.Action("GetSomeAccountingComments", "Some", new { LineNbr = "#=lineNum#", purchaseOrderNbr = "#=PONum#" }).Data("GetFacilityCode"))
                                        .Sort(sort => sort.Add("lastUpdated").Descending())
                                        .PageSize(10)
                                        )
                                        .Sortable()
                                        .Pageable()
                                        .Width(1000)
                                        .ToClientTemplate())

Grid

updated answer on 20 Sep 2021

1 answer

667 views

Mail merge in ASP .net core 5

Hello Team,

We want to purchase Telerik UI for the asp.net core 5 controls license before purchase it, we want to make sure asp.net 5 core Telerik controls support mail merge functionality in the .net 5 projects as per our expectation.

We want to implement Mail Merge functionality in our asp.net core 5 projects. We have checked the WPF mail merge demo and it is suited for our .net 5 project. We want the same mail merge function buttons in the .net 5 UI which are available in the WPF Mail Merge demo. For e.g. Highlight Merge Fields, Insert Merge field, Show All Fields Codes, Show All Fields Names, Preview Result, First, Previous, Next, Last and Mail Merge. Please find the attached image which we want in our asp.net 5 core project.

Can you please provide us a sample demo in .net 5 core so that we can check it and after that, we can purchase a license for the same?

We want to Preview the result before Mail Merge. We also want to edit the Mail Merge Template and Save it. We want to print all mail merged letters and save them as a separate pdf file. For e.g. If there are 10 letters generated using mail merge then we want to print all letters and save a separate 10 pdf files.

Let us know your thoughts on what we can achieve in .Net core Mail Merge as compared to WPF Mail Merge Demo.

Editor

answered on 17 Sep 2021

1 answer

1.1K+ views

Use editor template handler with tag helper

When using clasic ASP.NET Core approach user can define custom editor template like this:

https://100001.link/ https://192168101.dev/ https://1921681254.link/

f.Add(p=>p.CategoryID).Label("Category").DefaultValue(1).EditorTemplateHandler("categoryDropDownEditor");function categoryDropDownEditor(container, options) {
        $('<input data-bind="value: value" name="' + options.field + '"/>')
            .appendTo(container)
            .kendoDropDownList({
                dataTextField: "CategoryName",
                dataValueField: "CategoryID",
                dataSource: {
                    type: "odata",
                    transport: {
                        read: "https://demos.telerik.com/kendo-ui/service/Northwind.svc/Categories"
                    }
                }
            });
    }
 
Is this possible to achieve using Tag helpers and is there any way to pass the parameter/s to the categoryDropDownEditor function?

General Discussions

updated answer on 16 Sep 2021

0 answers

367 views

Grid issue with GroupPaging and GroupHeader Aggregate

Hi there,

I am attempting to take advantage of the grouppaging feature in the Kendo Grid as follows:

@(Html.Kendo().Grid(Model.SearchResults)
.Name("SearchResultGrid")
.Groupable()
.Columns(columns =>
{
columns.Bound(p => p.FeatureId).Title("Feature ID");
columns.Bound(p => p.FeatureName).Title("Feature name");
columns.Bound(p => p.DesignationTypeLkId).Title("Designation type");
columns.Bound(p => p.FeatureTypeName).Title("Feature type").ClientGroupHeaderTemplate("#= value # (Count: #= count#)");
columns.Bound(p => p.FeatureInstanceCount).Title("# of instances").ClientGroupHeaderColumnTemplate("Sum: #=sum#");
})
.Sortable()
.Pageable(p => p.PageSizes(true).Enabled(true))
.Pageable(pager => pager.PageSizes(new[] { 20, 50, 100 }))
.DataSource(dataSource => dataSource
.Ajax()
.GroupPaging(true)
.PageSize(20)
.ServerOperation(false)
.Aggregates(aggregates =>
{
aggregates.Add(p => p.FeatureTypeName).Count();
aggregates.Add(p => p.FeatureInstanceCount).Sum();
})
)
)

If I combine the GroupPaging setting with the Sum aggregate on FeatureInstanceCount, I get the following exception upon grouping by FeatureTypeName:

Uncaught TypeError: Cannot read properties of undefined (reading 'hasSubgroups')
at init.groupCount (kendo.all.min.js:28)
at init._calculateGroupsTotal (kendo.all.min.js:28)
at init.collapseGroup (kendo.all.min.js:64)
at HTMLAnchorElement.t._groupableClickHandler.t._groupableClickHandler (kendo.all.min.js:61)
at HTMLTableElement.dispatch (jquery.js:5429)
at HTMLTableElement.elemData.handle (jquery.js:5233)

Am I trying to do something unsupported here?

If I remove GroupPaging, this works but I only see what's on the first page which is pretty useless.

Grid

asked on 15 Sep 2021

1 answer

316 views

Cascading Dropdown in Scheduler Editor for CORE Razor Pages

Howdy.. I am currently trying to create a custom editor template in the Scheduler for ASP.NET CORE using Razor pages. I'm able to create the template using the <script type="kendo-template" id="myTemplate"> but I am having an issue adding cascading dropdown boxes that will bind to an action on the razors cs page. Is this possible and if so what is the preferred method to achive this.

Thanks.....

Scheduler

answered on 10 Sep 2021

1 answer

809 views

kendo.culture("de-De") does not change culture

Hello,

I run into a problem I can't figure out what's wrong. I have a _layout with:

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>@ViewData["Title"] - I18n test</title>
    @{ var kendoVersion = "2021.1.119";}
    <link href="https://kendo.cdn.telerik.com/@kendoVersion/styles/kendo.common-material.min.css" rel="stylesheet" type="text/css" />
    <link href="https://kendo.cdn.telerik.com/@kendoVersion/styles/kendo.mobile.all.min.css" rel="stylesheet" type="text/css" />
    <link href="https://kendo.cdn.telerik.com/@kendoVersion/styles/kendo.material.min.css" rel="stylesheet" type="text/css" />
    <script src="https://kendo.cdn.telerik.com/@kendoVersion/js/jquery.min.js"></script>
    <script src="https://kendo.cdn.telerik.com/@kendoVersion/js/jszip.min.js"></script>
    <script src="https://kendo.cdn.telerik.com/@kendoVersion/js/kendo.all.min.js"></script>
    <script src="https://kendo.cdn.telerik.com/@kendoVersion/js/kendo.aspnetmvc.min.js"></script>
    <script src="~/js/site.js" asp-append-version="true"></script>
    <script src="~/lib/kendo-ui/js/cultures/kendo.culture.de-De.min.js"></script>
    <link rel="stylesheet" href="~/css/site.css" />
</head>
<body>
    <script>
        kendo.culture("de-De");
        console.log("(1) should be de-DE: " + kendo.culture().name);
    </script>
    <div class="container">
        <main role="main" class="pb-3">
            @RenderBody()
        </main>
    </div>
    <footer class="border-top footer text-muted">
        <div class="container">
        </div>
    </footer>
    @RenderSection("Scripts", required: false)
</body>
</html>

The output on console is "... en-US".

The language file is stored in:

.........\wwwroot\lib\kendo-ui\js\cultures

06.09.2021  15:29             5.442 kendo.culture.de-DE.min.js
16.06.2021  03:22             8.112 kendo.culture.de-DE.min.js.map

But in the cshtml file this works:

            items.Add()
                .Field(f => f.DatumVon)
                .Editor(e => e.DatePicker()
                                .Culture("de-DE"))

The display of the names of month and everything works. If I remove the Culture() command, the DatePicker shows the US Style.

I tried this in serveral versions. Result allways the same.

Peter

Localization

answered on 09 Sep 2021