Questions on UI for ASP.NET Core Forum

4 answers

849 views

Not sure if this is were I should post this question. I have created a dotnet standard assembly to use with my controller with the PDFViewer that will translate a Word document (docx) to a pdf. I have tried several different methods and get the same error. The error I receive is: "Can not export other than Jpeg and Jpeg2000 and ImageQuality different than High". The document is pretty straight forward with text a barcpde and a table if that helps (a small image of the doc attached). Does anyone have an idea how to fix this? I also created a "this is a test" document and when it is displayed it shows: "PDF file fails to process." I have attached the document.

System.NotSupportedException
HResult=0x80131515
Message=Can not export other than Jpeg and Jpeg2000 and ImageQuality different than High
Source=Telerik.Documents.Fixed
StackTrace:
at Telerik.Windows.Documents.Fixed.Model.Resources.ImageSource.DoOnUnknownData(Byte[] unknownData, ImageQuality imageQuality, Action`1 doOnEncodedData)
at Telerik.Windows.Documents.Fixed.Model.Resources.ImageSource.InitializeImageInfoFromUnknownData(Byte[] unknownData, ImageQuality imageQuality)
at Telerik.Windows.Documents.Fixed.Model.Resources.ImageSource.EnsureImageInfo()
at Telerik.Windows.Documents.Fixed.Model.Resources.ImageSource.get_Width()
at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Model.Elements.Objects.ImageXObject.CopyPropertiesFrom(IPdfExportContext context, ImageSource imageSource)
at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Export.PdfExportContext.GetResource(ImageSource resource)
at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Export.PdfContentExportContext.GetResource(ImageSource imageSource)
at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Export.ContentElementWriters.ImageWriter.WriteOverride(PdfWriter writer, IPdfContentExportContext context, Image element)
at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Export.ContentElementWriters.MarkableContentElementWriter`1.Write(PdfWriter writer, IPdfContentExportContext context, Object element)
at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Export.ContentElementWriters.ContentElementWriterBase.WriteElement(PdfWriter writer, IPdfContentExportContext context, Object element)
at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Export.ContentElementWriters.ContentRootWriter.WriteOverride(PdfWriter writer, IPdfContentExportContext context, IContentRootElement element)
at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Export.ContentElementWriters.ContentElementWriter`1.Write(PdfWriter writer, IPdfContentExportContext context, Object element)
at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Export.ContentElementWriters.ContentElementWriterBase.WriteElement(PdfWriter writer, IPdfContentExportContext context, Object element)
at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Model.Elements.DocumentStructure.ContentStream.BuildContentData(IPdfExportContext context, IResourceHolder resourceHolder, IContentRootElement contentRootElement)
at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Model.Elements.DocumentStructure.Page.CopyPropertiesFrom(IPdfExportContext context, RadFixedPage fixedPage)
at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Model.Elements.DocumentStructure.DocumentCatalog.CopyRadFixedPageProperties(RadFixedPage source, Page destination, IRadFixedDocumentExportContext context)
at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Model.Elements.DocumentStructure.DocumentCatalog.CopyPagePropertiesFrom(IRadFixedDocumentExportContext context)
at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Model.Elements.DocumentStructure.DocumentCatalog.CopyPropertiesFrom(IRadFixedDocumentExportContext context)
at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Export.PdfExporter.Export(IRadFixedDocumentExportContext context, Stream output)
at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.PdfFormatProvider.ExportOverride(RadFixedDocument document, Stream output)
at Telerik.Windows.Documents.Common.FormatProviders.FormatProviderBase`1.Export(T document, Stream output)
at Telerik.Windows.Documents.Flow.FormatProviders.Pdf.PdfFormatProvider.ExportOverride(RadFlowDocument document, Stream output)
at Telerik.Windows.Documents.Common.FormatProviders.FormatProviderBase`1.Export(T document, Stream output)
at TexasProtax.Document.Pdf.ConvertToPdf.FromWord(String filename) in D:\#bitbucket\TexasProtax\texasprotax.appraisalportal\TexasProtax.Document\Pdf\ConvertToPdf.cs:line 36
at TexasProTax.AppraisalPortal.Web.Areas.Document.Controller.ViewerController.GetDocument(String location) in D:\#bitbucket\TexasProtax\texasprotax.appraisalportal\TexasProtax.AppraisalPortal.Web\Areas\Document\Controller\ViewerController.cs:line 43
at Microsoft.Extensions.Internal.ObjectMethodExecutor.Execute(Object target, Object[] parameters)
at Microsoft.AspNetCore.Mvc.Infrastructure.ActionMethodExecutor.SyncActionResultExecutor.Execute(IActionResultTypeMapper mapper, ObjectMethodExecutor executor, Object controller, Object[] arguments)
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.InvokeActionMethodAsync()
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.InvokeNextActionFilterAsync()

Here is the method:

using System;

using System.Collections.Generic;

using System.IO;

using System.Text;

using Telerik.Windows.Documents.Common.FormatProviders;

using Telerik.Windows.Documents.Flow.FormatProviders.Docx;

using Telerik.Windows.Documents.Flow.FormatProviders.Pdf;

using Telerik.Windows.Documents.Flow.Model;

...

public static Stream FromWord(string filename)

{

using (Stream inStream = File.OpenRead(filename))

using (Stream outStream = new MemoryStream())

{

IFormatProvider<RadFlowDocument> fileFormatProvider = new DocxFormatProvider();

RadFlowDocument document = null;

using (Stream input = File.OpenRead(filename))

{

document = fileFormatProvider.Import(input);

}

//byte[] renderedBytes = null;

IFormatProvider<RadFlowDocument> formatProvider = new PdfFormatProvider();

using (MemoryStream ms = new MemoryStream())

{

formatProvider.Export(document, ms);

//renderedBytes = ms.ToArray();

return ms;

}

PDFViewer

answered on 12 Aug 2020

1 answer

366 views

Add button on window (custom command)

Hello.

I'm doing this example: https://demos.telerik.com/aspnet-core/grid/custom-command

I would like to add a button to the view, the button should redirect to a controller action with a parameter.
attached image

How could I do it?

Grid

answered on 11 Aug 2020

3 answers

664 views

Asp.net core grid can edit go to another page

I still have a developer edition available to me in my downloads and was wondering. In the grid can one tell the edit button to go to another controller / action ?

Regards

Grid

answered on 10 Aug 2020

5 answers

129 views

onDataBound fires before the data loads

I have several treeviews on a page and the ondatabound is firing before the data is loaded, actually, before the tree is ready. Anything that I need to do differently?

Matt

TreeView

answered on 10 Aug 2020

4 answers

171 views

double window content

Hi,

I'm loading dynamically a view from MVC inside my angular application, all the kendo controls renders ok but if the view contains a window the window content apears 2 times , one inside the window and other at the end of the body (Image attached).

The same problem happens with a grid with editor popup (image 2 atached)

I followed the net core mvc getting started tutorial but for include all the js files I added this lines inside angular.json

"scripts": [

{

"input": "../Scripts/AppScripts/jquery.js",

"inject": false,

"bundleName": "jquery"

},

{

"input": "../Scripts/AppScripts/kendo.all.min.js",

"inject": false,

"bundleName": "kendo.all.min"

},

{

"input": "../Scripts/AppScripts/kendo.aspnetmvc.min.js",

"inject": false,

"bundleName": "kendo.aspnetmvc.min"

},

{

"input": "../Scripts/AppScripts/kendo.culture.de-DE.min.js",

"inject": false,

"bundleName": "kendo.culture.de-DE.min"

}

]

and in my index file inside head tag:

<script src="jquery.js"></script>

<script src="kendo.all.min.js"></script>

<script src="kendo.aspnetmvc.min.js"></script>

<script src="kendo.culture.de-DE.min.js"></script>

I created a sample project to reproduce the problem:
https://drive.google.com/file/d/1rydILf7WvVDiLUGZGRBfl4wjZihw2kbw/view?usp=sharing

inside home component.ts comment or un comment the lines :

this.loadUrl('/home/windowDemo');

// this.loadUrl('/home/index');

to see the problem in a view with a single window or in a sample table

Window

answered on 10 Aug 2020

1 answer

292 views

Persistance in Breadcrumb

Hi there,

Recently started using breadcrumb in a ASP.net core application, so far i have no issues with the rendering side of things nor adding items to the breadcrumb.

The main issue i am having is with the breadcrumb persisting during the session, meaning that i cant seem to be able to add to the list of items on entering a new page without the previous ones (except for the root item) being forgotten about.

in _layout.cshtml:

@(Html.Kendo().Breadcrumb()

.Name("breadcrumb")

.Navigational(true

)

.Items(items =>

{

items.Add()

.Type(BreadcrumbItemType.RootItem)

.Href("/")

.Text("Home")

.Icon("home")

.ShowIcon(true)

.ItemClass("root")

.IconClass("root")

.LinkClass("root");

})

)

script present in other pages (specifics in this code change based on the page of course):

$(function () {

var breadcrumb = $("#breadcrumb").data("kendoBreadcrumb");

breadcrumb.items().push({ href: "/Product/Groups", itemClass: "item", type: "item", text: "Product Groups", showText: true, showIcon: false });

breadcrumb.refresh();

});

Breadcrumb

answered on 10 Aug 2020

1 answer

444 views

Local Binding Not Working, Issues Ajax Call

I have a grid that I want to bind to local data. When I try to add a record, the widget tries to make an Ajax post back, instead of adding to the IEnumerable<T>.

I'm running ASP Dot Net Core 3.1 with Razor Pages and Telerik 2020.2.617

My Razor Page is as follows:

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

.AutoBind(true)

.BindTo((IEnumerable<CreateModel.ModelItem>)Model.Data.LineItems)

.Columns(cols =>

{

cols.Bound(c => c.Id);

cols.Bound(c => c.Line);

cols.Bound(c => c.Description);

cols.Bound(c => c.Qty);

cols.Bound(c => c.Value);

cols.Command(c =>

{

c.Edit();

c.Destroy();

});

})

.Editable(GridEditMode.InLine)

.Pageable()

.DataSource(ds=>

ds.Ajax()

.Batch(false)

.ServerOperation(false)

.Model(m=>

{

m.Id(id => id.Id);

m.Field(f => f.Id).DefaultValue(Guid.Empty);

m.Field(f => f.Line).DefaultValue(1);

m.Field(f => f.Description);

m.Field(f => f.Qty).DefaultValue(1);

m.Field(f => f.Value).DefaultValue(0.00m);

})

)

.ToolBar(t=>

{

t.Create().Text("Add Line Item");

t.Save();

})

)

Grid

answered on 07 Aug 2020

6 answers

1.4K+ views

model is null when using kendo grid crud operations

hi ..

i have a dto class called GroupListDto with just three fields

public class GroupListDto

{

public int Id { get; set; }

public string Title { get; set; }

public string Description { get; set; }

}

i use this class as kendo grid model ..

when i write my actionresult in below manner . my model field is empty

public ActionResult Create([DataSourceRequest] DataSourceRequest request, GroupListDto group)

but when is use GroupListDto class fields instead , the fields are filled with correct datas

public ActionResult Create([DataSourceRequest] DataSourceRequest request, string Title , string Description)

does anyone know what is the problem ?

why i cant get data in my dto model , but i get data in its fields !?

Grid

answered on 06 Aug 2020

1 answer

265 views

Async Upload Posting to Wrong Method

I am using .net core 3.5 and razor pages. I have a file upload control that is calling OnPost even when the control explicitly says to call a different method name.

@(Html.Kendo().Upload()
.Name("files")
.Multiple(false)
.Async(a => a
.Save("Async_Save", "New", new { Question = DebtorDropBox.Web.UI.Code.Question.DriversLicense })
.AutoUpload(true)
)
.Events(e => e
.Success("onSuccess")
.Upload("onUpload")
.Error("onError")
)
.Validation(validation => validation.AllowedExtensions(new string[] { ".jpg" }))
.Validation(validation => validation.MaxFileSize(4000000))
)

for testing purposes I have added the following three methods to my page and no matter what It keeps calling OnPost. Is there something I should be doing?

public async Task<ActionResult> Async_Save(IEnumerable<IFormFile> files, Question question)
{
return Page();
}

public async Task<ActionResult> OnPostAsync_Save(IEnumerable<IFormFile> files, Question question)
{
return Page();
}

public async Task<ActionResult> OnPost(IEnumerable<IFormFile> files, Question question)
{
return Page();
}

Upload

answered on 05 Aug 2020

9 answers

1.7K+ views

Handling datasource exceptions

How do I handle an exception that occurs when generating the data to be sent to the grid? I've seen an example of a call to a Javascript "error_handler" method. Is that my only option?

<kendo-grid name="grid">

<datasource type="DataSourceTagHelperType.Ajax" on-error="Error">

<transport>

<read url="Home/GetOrgs" />

</transport>

</datasource>

...

</kendo-grid>

public IActionResult GetOrgs([DataSourceRequest] DataSourceRequest request)

{

int x = 0; int r = 10 / x;

}